environment::native_handle fix

closes #332

.circleci/config.yml

@@ -0,0 +1,75 @@
+version: 2
+
+jobs:
+  build:
+    environment:
+      - BOOST_LIBRARY=process
+      - CXX_STANDARD=gnu++11
+    docker:
+      - image: gcc:7
+    steps:
+      - checkout
+      - run:
+          name: Setting up Environment
+          command: |
+            echo 'export BOOST="$HOME/boost-local"' >> $BASH_ENV
+            if [ $CIRCLE_BRANCH = "master" ]; then
+                echo 'export BOOST_BRANCH="master"' >> $BASH_ENV;
+            else
+                echo 'export BOOST_BRANCH="develop"' >> $BASH_ENV;
+            fi
+            echo 'export BOOST_REMOVE="$BOOST/libs/$BOOST_LIBRARY"' >> $BASH_ENV
+            HOME_SED_=$(echo $HOME | sed -e 's/\//\\\//g')
+            echo 'export HOME_SED=$HOME_SED_' >> $BASH_ENV
+      - run:
+          name: install pre dependencies
+          command: |
+            apt-get update -yqq
+            apt-get install git curl valgrind -y
+      - run:
+          name: Initializing git repo for boost
+          command: |
+            git init $BOOST
+            cd $BOOST
+            echo Testing $BRANCH_TO_TEST
+            git remote add --no-tags -t $BOOST_BRANCH origin https://github.com/boostorg/boost.git
+            git fetch --depth=1
+            git checkout $BOOST_BRANCH
+            git submodule update --init --merge
+            git remote set-branches --add origin $BOOST_BRANCH
+            git pull --recurse-submodules
+            git submodule update --init
+            git checkout $BOOST_BRANCH
+            git submodule foreach "git reset --quiet --hard; git clean -fxd"
+            git reset --hard; git clean -fxd
+            git status
+            rm -rf $BOOST_REMOVE
+            mv $HOME/project $BOOST_REMOVE
+      - run:
+          name: Bootstrapping boost-build
+          command: |
+            cd $BOOST
+            ./bootstrap.sh
+            ./b2 headers
+      - run:
+          name: Building examples
+          command: |
+            cd $BOOST_REMOVE/example
+            ../../../b2 -j2 address-model=64 architecture=x86 toolset=gcc cxxflags="-std=gnu++14" -sBOOST_BUILD_PATH=. | tee example.log || FAILED=1
+            sed -i -e "s/^..\/..\/..\/boost\/process\//\/root\/project\/include\/boost\/process\//gm" example.log
+            python <(curl -s https://report.ci/annotate.py) --tool gcc --name "Circle CI Gcc Build" --input example.log
+            exit $FAILED
+      - run:
+          name: Running Unit tests
+          command: |
+            cd $BOOST_REMOVE/test
+            ../../../b2 -j2 with-valgrind address-model=64 architecture=x86 testing.launcher=valgrind valgrind=on toolset=gcc cxxflags="--coverage -std=$CXX_STANDARD" linkflags="--coverage" -sBOOST_BUILD_PATH=. | tee test.log || FAILED=1
+            ../../../b2 -j2 without-valgrind address-model=64 architecture=x86 toolset=gcc cxxflags="--coverage -std=$CXX_STANDARD" linkflags="--coverage" -sBOOST_BUILD_PATH=. | tee no-valgrind.log || FAILED=1
+            sed -i -e "s/^..\/..\/..\/boost\/process\//\/root\/project\/include\/boost\/process\//gm" test.log
+            sed -i -e "s/^..\/..\/..\/boost\/process\//\/root\/project\/include\/boost\/process\//gm" no-valgrind.log
+
+            python <(curl -s https://report.ci/annotate.py) --tool gcc --input test.log
+            python <(curl -s https://report.ci/annotate.py) --tool gcc --input no-valgrind.log
+            bash <(curl -s https://codecov.io/bash) -x gcov > /dev/null || true
+            echo "BUILD_RESULT: $FAILED"
+            exit $FAILED

.drone.star

@@ -0,0 +1,38 @@
+# Use, modification, and distribution are
+# subject to the Boost Software License, Version 1.0. (See accompanying
+# file LICENSE.txt)
+#
+# Copyright Rene Rivera 2020.
+
+# For Drone CI we use the Starlark scripting language to reduce duplication.
+# As the yaml syntax for Drone CI is rather limited.
+#
+#
+globalenv={'B2_CI_VERSION': '1', 'B2_VARIANT': 'release'}
+linuxglobalimage="cppalliance/droneubuntu1804:1"
+windowsglobalimage="cppalliance/dronevs2019"
+
+def main(ctx):
+  return [
+  freebsd_cxx("gcc 11 freebsd", "g++-11", buildtype="boost", buildscript="drone", freebsd_version="13.1", environment={'B2_TOOLSET': 'gcc-11', 'B2_CXXSTD': '17,20', 'B2_LINKFLAGS': '-Wl,-rpath=/usr/local/lib/gcc11'}, globalenv=globalenv),
+  freebsd_cxx("clang 14 freebsd", "clang++-14", buildtype="boost", buildscript="drone", freebsd_version="13.1", environment={'B2_TOOLSET': 'clang-14', 'B2_CXXSTD': '17,20'}, globalenv=globalenv),
+  linux_cxx("docs", "", packages="docbook docbook-xml docbook-xsl xsltproc libsaxonhe-java default-jre-headless flex libfl-dev bison unzip rsync", image="cppalliance/droneubuntu1804:1", buildtype="docs", buildscript="drone", environment={"COMMENT": "docs"}, globalenv=globalenv),
+  linux_cxx("asan",         "g++-8",  packages="g++-8",  buildtype="boost", buildscript="drone", image=linuxglobalimage,                        environment={'COMMENT': 'asan',  'B2_VARIANT': 'debug', 'B2_TOOLSET': 'gcc-8',  'B2_CXXSTD': '11', 'B2_ASAN':  '1', 'B2_DEFINES': 'BOOST_NO_STRESS_TEST=1', 'DRONE_EXTRA_PRIVILEGED': 'True', 'DRONE_JOB_UUID': '356a192b79'}, globalenv=globalenv, privileged=True),
+  linux_cxx("ubsan",        "g++-8",  packages="g++-8",  buildtype="boost", buildscript="drone", image=linuxglobalimage,                        environment={'COMMENT': 'ubsan', 'B2_VARIANT': 'debug', 'B2_TOOLSET': 'gcc-8',  'B2_CXXSTD': '11', 'B2_UBSAN': '1', 'B2_DEFINES': 'BOOST_NO_STRESS_TEST=1', 'B2_LINKFLAGS': '-fuse-ld=gold',  'DRONE_JOB_UUID': '77de68daec'}, globalenv=globalenv),
+  #linux_cxx("gcc 11 arm64", "g++-11", packages="g++-11", buildtype="boost", buildscript="drone", image="cppalliance/droneubuntu2004:multiarch", environment={                                           'B2_TOOLSET': 'gcc-11', 'B2_CXXSTD': '11',                                                                                            'DRONE_JOB_UUID': '17ba079169m'}, arch="arm64", globalenv=globalenv),
+  linux_cxx("GCC 10, Debug + Coverage", "g++-10", packages="g++-10 libssl-dev libffi-dev binutils-gold gdb",
+                                                                                                 image="cppalliance/droneubuntu2004:1", buildtype="boost", buildscript="drone", environment={"GCOV": "gcov-10", "LCOV_VERSION": "1.15", "VARIANT": "process_coverage", "TOOLSET": "gcc", "COMPILER": "g++-10", "CXXSTD": "11", "DRONE_BEFORE_INSTALL" : "process_coverage", "CODECOV_TOKEN": {"from_secret": "codecov_token"}}, globalenv=globalenv, privileged=True),
+  # A set of jobs based on the earlier .travis.yml configuration:
+  linux_cxx("Default clang++ with libc++", "clang++-libc++", packages="libc++-dev", image="cppalliance/droneubuntu1604:1", buildtype="buildtype", buildscript="drone", environment={ "B2_TOOLSET": "clang-7", "B2_CXXSTD": "11", "VARIANT": "debug", "TOOLSET": "clang", "COMPILER": "clang++-libc++", "CXXSTD": "11", "CXX_FLAGS": "<cxxflags>-stdlib=libc++ <linkflags>-stdlib=libc++", "TRAVISCLANG" : "yes" }, globalenv=globalenv),
+  linux_cxx("Default g++", "g++", image="cppalliance/droneubuntu1604:1", buildtype="buildtype", buildscript="drone", environment={ "VARIANT": "release", "TOOLSET": "gcc", "COMPILER": "g++", "CXXSTD": "11" }, globalenv=globalenv),
+  linux_cxx("Clang 3.8, UBasan", "clang++-3.8", packages="clang-3.8 libssl-dev", llvm_os="precise", llvm_ver="3.8", image="cppalliance/droneubuntu1604:1", buildtype="boost", buildscript="drone", environment={"VARIANT": "process_ubasan", "TOOLSET": "clang", "COMPILER": "clang++-3.8", "CXXSTD": "11", "UBSAN_OPTIONS": 'print_stacktrace=1', "DRONE_BEFORE_INSTALL": "UBasan" }, globalenv=globalenv),
+  linux_cxx("gcc 6", "g++-6", packages="g++-6", buildtype="boost", buildscript="drone", image=linuxglobalimage, environment={'B2_TOOLSET': 'gcc-6', 'B2_CXXSTD': '11', 'DRONE_JOB_UUID': '902ba3cda1'}, globalenv=globalenv),
+  linux_cxx("clang 3.8", "clang++-3.8", packages="clang-3.8", buildtype="boost", buildscript="drone", image="cppalliance/droneubuntu1604:1", environment={'B2_TOOLSET': 'clang', 'COMPILER': 'clang++-3.8', 'B2_CXXSTD': '11', 'DRONE_JOB_UUID': '7b52009b64'}, globalenv=globalenv),
+  osx_cxx("clang", "g++", packages="", buildtype="boost",         buildscript="drone", environment={'B2_TOOLSET': 'clang', 'B2_CXXSTD': '11,17', 'DRONE_JOB_UUID': '91032ad7bb'}, globalenv=globalenv),
+  linux_cxx("coverity", "g++", packages="", buildtype="coverity", buildscript="drone", image=linuxglobalimage, environment={'COMMENT': 'Coverity Scan', 'B2_TOOLSET': 'clang', 'DRONE_JOB_UUID': '472b07b9fc'}, globalenv=globalenv),
+  windows_cxx("msvc-14.1", "", image="cppalliance/dronevs2017",   buildtype="boost", buildscript="drone", environment={ "VARIANT": "release", "TOOLSET": "msvc-14.1", "CXXSTD": "11", "DEFINE" : "BOOST_BEAST_USE_STD_STRING_VIEW", "ADDRESS_MODEL": "64"}),
+  windows_cxx("msvc-14.3", "", image="cppalliance/dronevs2022:1", buildtype="boost", buildscript="drone", environment={ "VARIANT": "release", "TOOLSET": "msvc-14.3", "CXXSTD": "11", "DEFINE" : "BOOST_BEAST_USE_STD_STRING_VIEW", "ADDRESS_MODEL": "64"}),
+    ]
+
+# from https://github.com/boostorg/boost-ci
+load("@boost_ci//ci/drone/:functions.star", "linux_cxx","windows_cxx","osx_cxx","freebsd_cxx")

.drone/drone.bat

@@ -0,0 +1,36 @@
+@ECHO ON
+setlocal enabledelayedexpansion
+
+if "%DRONE_JOB_BUILDTYPE%" == "boost" (
+
+echo '==================================> INSTALL'
+
+git clone https://github.com/boostorg/boost-ci.git boost-ci-cloned --depth 1
+cp -prf boost-ci-cloned/ci .
+rm -rf boost-ci-cloned
+
+REM source ci/travis/install.sh
+REM The contents of install.sh below:
+
+for /F %%i in ("%DRONE_REPO%") do @set SELF=%%~nxi
+SET BOOST_CI_TARGET_BRANCH=%DRONE_COMMIT_BRANCH%
+SET BOOST_CI_SRC_FOLDER=%cd%
+
+call ci\common_install.bat
+
+echo '==================================> COMPILE'
+
+REM set B2_TARGETS=libs/!SELF!/test libs/!SELF!/example
+set B2_TARGETS=libs/!SELF!/test
+
+cd !BOOST_ROOT!
+call bootstrap.bat
+b2 headers
+b2 --debug-configuration variant=%VARIANT% cxxstd=%CXXSTD% define=%DEFINE% address-model=%ADDRESS_MODEL% toolset=%TOOLSET% --verbose-test libs/!SELF!/test -j3
+b2 --debug-configuration variant=%VARIANT% cxxstd=%CXXSTD% define=%DEFINE% address-model=%ADDRESS_MODEL% toolset=%TOOLSET% --verbose-test libs/!SELF!/example -j3
+
+) else if "%DRONE_JOB_BUILDTYPE%" == "standalone-windows" (
+
+REM not used
+
+)

.drone/drone.sh

@@ -0,0 +1,199 @@
+#!/bin/bash
+
+# Copyright 2020 Rene Rivera, Sam Darwin
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE.txt or copy at http://boost.org/LICENSE_1_0.txt)
+
+set -xe
+
+export TRAVIS_BUILD_DIR=$(pwd)
+export DRONE_BUILD_DIR=$(pwd)
+export TRAVIS_BRANCH=$DRONE_BRANCH
+export TRAVIS_EVENT_TYPE=$DRONE_BUILD_EVENT
+export VCS_COMMIT_ID=$DRONE_COMMIT
+export GIT_COMMIT=$DRONE_COMMIT
+export REPO_NAME=$DRONE_REPO
+export USER=$(whoami)
+export CC=${CC:-gcc}
+export PATH=~/.local/bin:/usr/local/bin:$PATH
+
+common_install () {
+  git clone https://github.com/boostorg/boost-ci.git boost-ci-cloned --depth 1
+  cp -prf boost-ci-cloned/ci .
+  rm -rf boost-ci-cloned
+
+  if [ "$TRAVIS_OS_NAME" == "osx" ]; then
+      unset -f cd
+  fi
+
+  export SELF=`basename $REPO_NAME`
+  export BOOST_CI_TARGET_BRANCH="$TRAVIS_BRANCH"
+  export BOOST_CI_SRC_FOLDER=$(pwd)
+
+  . ./ci/common_install.sh
+}
+
+if [ "$DRONE_JOB_BUILDTYPE" == "boost" ]; then
+
+echo '==================================> INSTALL'
+
+common_install
+
+echo '==================================> SCRIPT'
+
+$BOOST_ROOT/libs/$SELF/ci/travis/build.sh
+
+elif [ "$DRONE_JOB_BUILDTYPE" == "docs" ]; then
+
+echo '==================================> INSTALL'
+
+export SELF=`basename $REPO_NAME`
+
+pwd
+cd ..
+mkdir -p $HOME/cache && cd $HOME/cache
+if [ ! -d doxygen ]; then git clone -b 'Release_1_8_15' --depth 1 https://github.com/doxygen/doxygen.git && echo "not-cached" ; else echo "cached" ; fi
+cd doxygen
+cmake -H. -Bbuild -DCMAKE_BUILD_TYPE=Release
+cd build
+sudo make install
+cd ../..
+if [ ! -f saxonhe.zip ]; then wget -O saxonhe.zip https://sourceforge.net/projects/saxon/files/Saxon-HE/9.9/SaxonHE9-9-1-4J.zip/download && echo "not-cached" ; else echo "cached" ; fi
+unzip -o saxonhe.zip
+sudo rm /usr/share/java/Saxon-HE.jar
+sudo cp saxon9he.jar /usr/share/java/Saxon-HE.jar
+cd ..
+BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
+git clone -b $BOOST_BRANCH https://github.com/boostorg/boost.git boost-root --depth 1
+cd boost-root
+export BOOST_ROOT=$(pwd)
+git submodule update --init libs/context
+git submodule update --init tools/boostbook
+git submodule update --init tools/boostdep
+git submodule update --init tools/docca
+git submodule update --init tools/quickbook
+rsync -av $TRAVIS_BUILD_DIR/ libs/$SELF
+python tools/boostdep/depinst/depinst.py ../tools/quickbook
+./bootstrap.sh
+./b2 headers
+
+echo '==================================> SCRIPT'
+
+echo "using doxygen ; using boostbook ; using saxonhe ;" > tools/build/src/user-config.jam
+./b2 -j3 libs/$SELF/doc//boostrelease
+
+elif [ "$DRONE_JOB_BUILDTYPE" == "codecov" ]; then
+
+echo '==================================> INSTALL'
+
+common_install
+
+echo '==================================> SCRIPT'
+
+cd $BOOST_ROOT/libs/$SELF
+ci/travis/codecov.sh
+
+elif [ "$DRONE_JOB_BUILDTYPE" == "valgrind" ]; then
+
+echo '==================================> INSTALL'
+
+common_install
+
+echo '==================================> SCRIPT'
+
+cd $BOOST_ROOT/libs/$SELF
+ci/travis/valgrind.sh
+
+elif [ "$DRONE_JOB_BUILDTYPE" == "standalone" ]; then
+
+echo '==================================> INSTALL'
+
+# Installing cmake with apt-get, so not required here:
+# pip install --user cmake
+
+echo '==================================> SCRIPT'
+
+export CXXFLAGS="-Wall -Wextra -Werror -std=c++17"
+mkdir __build_17
+cd __build_17
+cmake -DBOOST_JSON_STANDALONE=1 ..
+cmake --build .
+ctest -V .
+export CXXFLAGS="-Wall -Wextra -Werror -std=c++2a"
+mkdir ../__build_2a
+cd ../__build_2a
+cmake -DBOOST_JSON_STANDALONE=1 ..
+cmake --build .
+ctest -V .
+
+elif [ "$DRONE_JOB_BUILDTYPE" == "coverity" ]; then
+
+echo '==================================> INSTALL'
+
+common_install
+
+echo '==================================> SCRIPT'
+
+if [ $VARIANT = "process_valgrind" ];
+then export USE_VALGRIND="testing.launcher=valgrind valgrind=on";
+fi ;
+
+if  [ -n "${COVERITY_SCAN_NOTIFICATION_EMAIL}" -a \( "$TRAVIS_BRANCH" = "develop" -o "$TRAVIS_BRANCH" = "master" \) -a \( "$DRONE_BUILD_EVENT" = "push" -o "$DRONE_BUILD_EVENT" = "cron" \) ] ; then
+cd $BOOST_ROOT/libs/$SELF
+ci/travis/coverity.sh
+fi
+
+elif [ "$DRONE_JOB_BUILDTYPE" == "cmake-superproject" ]; then
+
+echo '==================================> INSTALL'
+
+common_install
+
+echo '==================================> COMPILE'
+
+export CXXFLAGS="-Wall -Wextra -Werror"
+
+mkdir __build_static
+cd __build_static
+cmake -DBOOST_ENABLE_CMAKE=1 -DBUILD_TESTING=ON -DBoost_VERBOSE=1 \
+    -DBOOST_INCLUDE_LIBRARIES=$SELF ..
+cmake --build .
+ctest --output-on-failure -R boost_$SELF
+
+cd ..
+
+mkdir __build_shared
+cd __build_shared
+cmake -DBOOST_ENABLE_CMAKE=1 -DBUILD_TESTING=ON -DBoost_VERBOSE=1 \
+    -DBOOST_INCLUDE_LIBRARIES=$SELF -DBUILD_SHARED_LIBS=ON ..
+cmake --build .
+ctest --output-on-failure -R boost_$SELF
+
+elif [ "$DRONE_JOB_BUILDTYPE" == "cmake1" ]; then
+
+echo '==================================> INSTALL'
+
+pip install --user cmake
+
+echo '==================================> SCRIPT'
+
+export SELF=`basename $REPO_NAME`
+BOOST_BRANCH=develop && [ "$DRONE_BRANCH" == "master" ] && BOOST_BRANCH=master || true
+echo BOOST_BRANCH: $BOOST_BRANCH
+cd ..
+git clone -b $BOOST_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
+cd boost-root
+mkdir -p libs/$SELF
+cp -r $DRONE_BUILD_DIR/* libs/$SELF
+# git submodule update --init tools/boostdep
+git submodule update --init --recursive
+
+cd libs/$SELF
+
+../../../b2 -sBOOST_BUILD_PATH=.
+../../../b2 $MULTITHREAD with-valgrind address-model=64 architecture=x86 $USE_VALGRIND toolset=$TOOLSET cxxflags="--coverage -DBOOST_TRAVISCI_BUILD -std=$CXX_STANDARD" linkflags="--coverage" -sBOOST_BUILD_PATH=. $REPORT_CI
+../../../b2 $MULTITHREAD without-valgrind address-model=64 architecture=x86 toolset=$TOOLSET cxxflags="--coverage -DBOOST_TRAVISCI_BUILD -std=$CXX_STANDARD" linkflags="--coverage" -sBOOST_BUILD_PATH=. $REPORT_CI
+
+
+
+fi

.gitattributes

@@ -0,0 +1,96 @@
+* text=auto !eol svneol=native#text/plain
+*.gitattributes text svneol=native#text/plain
+
+# Scriptish formats
+*.bat        text svneol=native#text/plain
+*.bsh        text svneol=native#text/x-beanshell
+*.cgi        text svneol=native#text/plain
+*.cmd        text svneol=native#text/plain
+*.js         text svneol=native#text/javascript
+*.php        text svneol=native#text/x-php
+*.pl         text svneol=native#text/x-perl
+*.pm         text svneol=native#text/x-perl
+*.py         text svneol=native#text/x-python
+*.sh         eol=lf svneol=LF#text/x-sh
+configure    eol=lf svneol=LF#text/x-sh
+
+# Image formats
+*.bmp        binary svneol=unset#image/bmp
+*.gif        binary svneol=unset#image/gif
+*.ico        binary svneol=unset#image/ico
+*.jpeg       binary svneol=unset#image/jpeg
+*.jpg        binary svneol=unset#image/jpeg
+*.png        binary svneol=unset#image/png
+*.tif        binary svneol=unset#image/tiff
+*.tiff       binary svneol=unset#image/tiff
+*.svg        text svneol=native#image/svg%2Bxml
+
+# Data formats
+*.pdf        binary svneol=unset#application/pdf
+*.avi        binary svneol=unset#video/avi
+*.doc        binary svneol=unset#application/msword
+*.dsp        text svneol=crlf#text/plain
+*.dsw        text svneol=crlf#text/plain
+*.eps        binary svneol=unset#application/postscript
+*.gz         binary svneol=unset#application/gzip
+*.mov        binary svneol=unset#video/quicktime
+*.mp3        binary svneol=unset#audio/mpeg
+*.ppt        binary svneol=unset#application/vnd.ms-powerpoint
+*.ps         binary svneol=unset#application/postscript
+*.psd        binary svneol=unset#application/photoshop
+*.rdf        binary svneol=unset#text/rdf
+*.rss        text svneol=unset#text/xml
+*.rtf        binary svneol=unset#text/rtf
+*.sln        text svneol=native#text/plain
+*.swf        binary svneol=unset#application/x-shockwave-flash
+*.tgz        binary svneol=unset#application/gzip
+*.vcproj     text svneol=native#text/xml
+*.vcxproj    text svneol=native#text/xml
+*.vsprops    text svneol=native#text/xml
+*.wav        binary svneol=unset#audio/wav
+*.xls        binary svneol=unset#application/vnd.ms-excel
+*.zip        binary svneol=unset#application/zip
+
+# Text formats
+.htaccess    text svneol=native#text/plain
+*.bbk        text svneol=native#text/xml
+*.cmake      text svneol=native#text/plain
+*.css        text svneol=native#text/css
+*.dtd        text svneol=native#text/xml
+*.htm        text svneol=native#text/html
+*.html       text svneol=native#text/html
+*.ini        text svneol=native#text/plain
+*.log        text svneol=native#text/plain
+*.mak        text svneol=native#text/plain
+*.qbk        text svneol=native#text/plain
+*.rst        text svneol=native#text/plain
+*.sql        text svneol=native#text/x-sql
+*.txt        text svneol=native#text/plain
+*.xhtml      text svneol=native#text/xhtml%2Bxml
+*.xml        text svneol=native#text/xml
+*.xsd        text svneol=native#text/xml
+*.xsl        text svneol=native#text/xml
+*.xslt       text svneol=native#text/xml
+*.xul        text svneol=native#text/xul
+*.yml        text svneol=native#text/plain
+boost-no-inspect text svneol=native#text/plain
+CHANGES      text svneol=native#text/plain
+COPYING      text svneol=native#text/plain
+INSTALL      text svneol=native#text/plain
+Jamfile      text svneol=native#text/plain
+Jamroot      text svneol=native#text/plain
+Jamfile.v2   text svneol=native#text/plain
+Jamrules     text svneol=native#text/plain
+Makefile*    text svneol=native#text/plain
+README       text svneol=native#text/plain
+TODO         text svneol=native#text/plain
+
+# Code formats
+*.c          text svneol=native#text/plain
+*.cpp        text svneol=native#text/plain
+*.h          text svneol=native#text/plain
+*.hpp        text svneol=native#text/plain
+*.ipp        text svneol=native#text/plain
+*.tpp        text svneol=native#text/plain
+*.jam        text svneol=native#text/plain
+*.java       text svneol=native#text/plain

.github/workflows/ci.yml

@@ -0,0 +1,201 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches:
+      - master
+      - develop
+      - feature/**
+
+env:
+  UBSAN_OPTIONS: print_stacktrace=1
+
+jobs:
+  posix:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - toolset: gcc-5
+            cxxstd: "11,14,1z"
+            os: ubuntu-18.04
+            install: g++-5
+          - toolset: gcc-6
+            cxxstd: "11,14,1z"
+            os: ubuntu-18.04
+            install: g++-6
+          - toolset: gcc-7
+            cxxstd: "11,14,17"
+            os: ubuntu-18.04
+          - toolset: gcc-10
+            cxxstd: "11,14,17,2a"
+            os: ubuntu-20.04
+            install: g++-10
+          - toolset: gcc-12
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-22.04
+            install: g++-12
+          - toolset: clang
+            compiler: clang++-3.9
+            cxxstd: "11,14"
+            os: ubuntu-18.04
+            install: clang-3.9
+          - toolset: clang
+            compiler: clang++-4.0
+            cxxstd: "11,14"
+            os: ubuntu-18.04
+            install: clang-4.0
+          - toolset: clang
+            compiler: clang++-5.0
+            cxxstd: "11,14,1z"
+            os: ubuntu-18.04
+            install: clang-5.0
+          - toolset: clang
+            compiler: clang++-6.0
+            cxxstd: "11,14,17"
+            os: ubuntu-18.04
+            install: clang-6.0
+          - toolset: clang
+            compiler: clang++-7
+            cxxstd: "11,14,17"
+            os: ubuntu-18.04
+            install: clang-7
+          - toolset: clang
+            compiler: clang++-8
+            cxxstd: "11,14,17"
+            os: ubuntu-20.04
+            install: clang-8
+          - toolset: clang
+            compiler: clang++-9
+            cxxstd: "11,14,17,2a"
+            os: ubuntu-20.04
+            install: clang-9
+          - toolset: clang
+            compiler: clang++-10
+            cxxstd: "11,14,17,2a"
+            os: ubuntu-20.04
+            install: clang-10
+          - toolset: clang
+            compiler: clang++-11
+            cxxstd: "11,14,17,2a"
+            os: ubuntu-20.04
+            install: clang-11
+          - toolset: clang
+            compiler: clang++-12
+            cxxstd: "11,14,17,2a"
+            os: ubuntu-20.04
+            install: clang-12
+          - toolset: clang
+            compiler: clang++-13
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-22.04
+            install: clang-13
+          - toolset: clang
+            compiler: clang++-14
+            cxxstd: "11,14,17,20,2b"
+            os: ubuntu-22.04
+            install: clang-14
+          - toolset: clang
+            cxxstd: "11,14,17,2a"
+            os: macos-11
+
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install packages
+        if: matrix.install
+        run: sudo apt install ${{matrix.install}}
+
+      - name: Setup Boost
+        run: |
+          echo GITHUB_REPOSITORY: $GITHUB_REPOSITORY
+          LIBRARY=${GITHUB_REPOSITORY#*/}
+          echo LIBRARY: $LIBRARY
+          echo "LIBRARY=$LIBRARY" >> $GITHUB_ENV
+          echo GITHUB_BASE_REF: $GITHUB_BASE_REF
+          echo GITHUB_REF: $GITHUB_REF
+          REF=${GITHUB_BASE_REF:-$GITHUB_REF}
+          REF=${REF#refs/heads/}
+          echo REF: $REF
+          BOOST_BRANCH=develop && [ "$REF" == "master" ] && BOOST_BRANCH=master || true
+          echo BOOST_BRANCH: $BOOST_BRANCH
+          cd ..
+          git clone -b $BOOST_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
+          cd boost-root
+          cp -r $GITHUB_WORKSPACE/* libs/$LIBRARY
+          git submodule update --init tools/boostdep
+          python tools/boostdep/depinst/depinst.py --git_args "--jobs 3" $LIBRARY
+          ./bootstrap.sh
+          ./b2 -d0 headers
+
+      - name: Create user-config.jam
+        if: matrix.compiler
+        run: |
+          echo "using ${{matrix.toolset}} : : ${{matrix.compiler}} ;" > ~/user-config.jam
+
+      - name: Run tests
+        run: |
+          cd ../boost-root
+          ./b2 -j3 libs/$LIBRARY/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} variant=debug,release
+
+  windows:
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - toolset: msvc-14.0
+            cxxstd: "14,latest"
+            addrmd: 32,64
+            os: windows-2019
+          - toolset: msvc-14.2
+            cxxstd: "14,17,20,latest"
+            addrmd: 32,64
+            os: windows-2019
+          - toolset: msvc-14.3
+            cxxstd: "14,17,20,latest"
+            addrmd: 32,64
+            os: windows-2022
+          - toolset: clang-win
+            cxxstd: "14,17,latest"
+            addrmd: 32,64
+            os: windows-2022
+          - toolset: gcc
+            cxxstd: "11,14,17,2a"
+            addrmd: 64
+            os: windows-2019
+
+    runs-on: ${{matrix.os}}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Boost
+        shell: cmd
+        run: |
+          echo GITHUB_REPOSITORY: %GITHUB_REPOSITORY%
+          for /f %%i in ("%GITHUB_REPOSITORY%") do set LIBRARY=%%~nxi
+          echo LIBRARY: %LIBRARY%
+          echo LIBRARY=%LIBRARY%>>%GITHUB_ENV%
+          echo GITHUB_BASE_REF: %GITHUB_BASE_REF%
+          echo GITHUB_REF: %GITHUB_REF%
+          if "%GITHUB_BASE_REF%" == "" set GITHUB_BASE_REF=%GITHUB_REF%
+          set BOOST_BRANCH=develop
+          for /f %%i in ("%GITHUB_BASE_REF%") do if "%%~nxi" == "master" set BOOST_BRANCH=master
+          echo BOOST_BRANCH: %BOOST_BRANCH%
+          cd ..
+          git clone -b %BOOST_BRANCH% --depth 1 https://github.com/boostorg/boost.git boost-root
+          cd boost-root
+          xcopy /s /e /q %GITHUB_WORKSPACE% libs\%LIBRARY%\
+          git submodule update --init tools/boostdep
+          python tools/boostdep/depinst/depinst.py --git_args "--jobs 3" %LIBRARY%
+          cmd /c bootstrap
+          b2 -d0 headers
+
+      - name: Run tests
+        shell: cmd
+        run: |
+          cd ../boost-root
+          b2 -j3 libs/%LIBRARY%/test toolset=${{matrix.toolset}} cxxstd=${{matrix.cxxstd}} address-model=${{matrix.addrmd}} variant=debug,release embed-manifest-via=linker

.gitignore

@@ -31,4 +31,5 @@
 /notes.cpp
 /notes_p.txt
 .settings
+.DS_Store
 

.travis.yml

@@ -10,28 +10,6 @@
 #
 # File revision #6
 
-env:
-    global:
-        # Autodetect Boost branch by using the following code: - BRANCH_TO_TEST=$TRAVIS_BRANCH
-        # or just directly specify it
-        - BRANCH_TO_TEST=$TRAVIS_BRANCH
-
-        # Files, which coverage results must be ignored (files from other projects).
-        # Example: - IGNORE_COVERAGE='*/boost/progress.hpp */filesystem/src/*'
-        - IGNORE_COVERAGE=''
-
-        # Explicitly remove the following library from Boost. This may be usefull, if you're for example running Travis
-        # from `Boost.DLL` repo, while Boost already has `dll`.
-        #
-        # By default is eaual to - BOOST_REMOVE=`basename $TRAVIS_BUILD_DIR`
-        # This will force to use local repo content, instead of the Boost's default
-        # not needed because process is not yet in boost.
-        #- BOOST_REMOVE=process
-
-    matrix:
-        - CXX_STANDARD=c++11 TOOLSET=gcc-5
-        - CXX_STANDARD=c++1y TOOLSET=gcc-5
-
 
 ###############################################################################################################
 # From this point and below code is same for all the Boost libs
@@ -39,80 +17,120 @@ env:
 sudo: false
 language: cpp
 compiler:
-    - gcc
+  - gcc
 
 os:
-    - linux
+  - linux
+  - osx
+
+env:
+  matrix:
+    - BADGE=linux
+    - BADGE=osx
+  global:
+    # Autodetect Boost branch by using the following code: - BRANCH_TO_TEST=$TRAVIS_BRANCH
+    # or just directly specify it
+    - BRANCH_TO_TEST=$TRAVIS_BRANCH
+
+    # Files, which coverage results must be ignored (files from other projects).
+    # Example: - IGNORE_COVERAGE='*/boost/progress.hpp */filesystem/src/*'
+    - IGNORE_COVERAGE=''
+
+    # Explicitly remove the following library from Boost. This may be usefull, if you're for example running Travis
+    # from `Boost.DLL` repo, while Boost already has `dll`.
+    #
+    # By default is eaual to - BOOST_REMOVE=`basename $TRAVIS_BUILD_DIR`
+    # This will force to use local repo content, instead of the Boost's default
+    # not needed because process is not yet in boost.
+    - BOOST_REMOVE=process
+    - CXX_STANDARD=gnu++11
+
+matrix:
+  exclude:
+    - os: linux
+      env: BADGE=osx
+    - os: osx
+      env: BADGE=linux
+
+
 
 # Installing additional tools
 addons:
   apt:
     sources:
-    - ubuntu-toolchain-r-test
+      - ubuntu-toolchain-r-test
     packages:
-    - valgrind
-    - python-yaml
-    - gcc-5
-    - g++-5
-#    - lcov
-    - clang
+      - valgrind
+      - python-yaml
+      - gcc-5
+      - g++-5
+      #    - lcov
+      - clang
 
 before_install:
-    # Set this to the name of the library
-    - PROJECT_TO_TEST=`basename $TRAVIS_BUILD_DIR`
-    - echo "Testing $PROJECT_TO_TEST"
-    # Cloning Boost libraries (fast nondeep cloning)
-    - BOOST=$HOME/boost-local
-    - git init $BOOST
-    - cd $BOOST
-    - if [ $(BRANCH_TO_TEST) = "master" ]; then
-      BOOST_BRANCH=master; 
-      else BOOST_BRANCH=develop; fi
-    - git remote add --no-tags -t $BOOST_BRANCH origin https://github.com/boostorg/boost.git
-    - git fetch --depth=1
-    - git checkout $BOOST_BRANCH
-    - git submodule update --init --merge
-    - git remote set-branches --add origin $BOOST_BRANCH
-    - git pull --recurse-submodules
-    - git submodule update --init
-    - git checkout $BOOST_BRANCH
-    - git submodule foreach "git reset --quiet --hard; git clean -fxd"
-    - git reset --hard; git clean -fxd
-    - git status
-#    - rm -rf $BOOST/libs/$BOOST_REMOVE
-    - mv $TRAVIS_BUILD_DIR/../$PROJECT_TO_TEST/ $BOOST/libs/$PROJECT_TO_TEST
-    - TRAVIS_BUILD_DIR=$BOOST/libs/$PROJECT_TO_TEST
-    - ./bootstrap.sh
-    - ./b2 headers
-    - cd $BOOST/libs/$PROJECT_TO_TEST/test
-
+  # Set this to the name of the library
+  - PROJECT_TO_TEST=`basename $TRAVIS_BUILD_DIR`
+  - echo "Testing $PROJECT_TO_TEST"
+  - if [ $TRAVIS_OS_NAME = "osx" ]; then brew install gcc5; brew install valgrind; brew install llvm; TOOLSET=clang; BOOST_TEST_CATCH_SYSTEM_ERRORS=no; MULTITHREAD=-j8; else TOOLSET=gcc-5; REPORT_CI=--boost-process-report-ci USE_VALGRIND="testing.launcher=valgrind valgrind=on"; fi
+  # Cloning Boost libraries (fast nondeep cloning)
+  - BOOST=$HOME/boost-local
+  - git init $BOOST
+  - cd $BOOST
+  - echo Branch to test  $BRANCH_TO_TEST
+  - if [ $BRANCH_TO_TEST = "master" ]; then
+    BOOST_BRANCH=master;
+    else BOOST_BRANCH=develop; fi
+  - git remote add --no-tags -t $BOOST_BRANCH origin https://github.com/boostorg/boost.git
+  - git fetch --depth=1
+  - git checkout $BOOST_BRANCH
+  - git submodule update --init --merge
+  - git remote set-branches --add origin $BOOST_BRANCH
+  - git pull --recurse-submodules || true
+  - git submodule update --init
+  - git checkout $BOOST_BRANCH
+  - git submodule foreach "git reset --quiet --hard; git clean -fxd"
+  - git reset --hard; git clean -fxd
+  - git status
+  - echo "Removing $BOOST/libs/$BOOST_REMOVE"
+  - rm -rf $BOOST/libs/$BOOST_REMOVE
+  - mv $TRAVIS_BUILD_DIR/../$PROJECT_TO_TEST/ $BOOST/libs/$PROJECT_TO_TEST
+  - TRAVIS_BUILD_DIR=$BOOST/libs/$PROJECT_TO_TEST
+  - ./bootstrap.sh
+  - ./b2 headers
+  - cd $BOOST/libs/$PROJECT_TO_TEST/test
+  - echo BOOST_TEST_CATCH_SYSTEM_ERRORS $BOOST_TEST_CATCH_SYSTEM_ERRORS
 script:
-    # `--coverage` flags required to generate coverage info for Coveralls
-    - ../../../b2 testing.launcher=valgrind address-model=64 architecture=x86 toolset=$TOOLSET cxxflags="--coverage -DBOOST_TRAVISCI_BUILD -std=$CXX_STANDARD" linkflags="--coverage" -sBOOST_BUILD_PATH=.
-
+  # `--coverage` flags required to generate coverage info for Coveralls
+  - ../../../b2 $MULTITHREAD with-valgrind address-model=64 architecture=x86 $USE_VALGRIND toolset=$TOOLSET cxxflags="--coverage -DBOOST_TRAVISCI_BUILD -std=$CXX_STANDARD" linkflags="--coverage" -sBOOST_BUILD_PATH=. $REPORT_CI
+  - ../../../b2 $MULTITHREAD without-valgrind address-model=64 architecture=x86 toolset=$TOOLSET cxxflags="--coverage -DBOOST_TRAVISCI_BUILD -std=$CXX_STANDARD" linkflags="--coverage" -sBOOST_BUILD_PATH=. $REPORT_CI
 after_success:
-    # Copying Coveralls data to a separate folder
-    - mkdir -p $TRAVIS_BUILD_DIR/coverals
-    - find ../../../bin.v2/ -name "*.gcda" -exec cp "{}" $TRAVIS_BUILD_DIR/coverals/ \;
-    - find ../../../bin.v2/ -name "*.gcno" -exec cp "{}" $TRAVIS_BUILD_DIR/coverals/ \;
+  # Copying Coveralls data to a separate folder
+  - mkdir -p $TRAVIS_BUILD_DIR/coverals
+  - find ../../../bin.v2/ -name "*.gcda" -exec cp "{}" $TRAVIS_BUILD_DIR/coverals/ \;
+  - find ../../../bin.v2/ -name "*.gcno" -exec cp "{}" $TRAVIS_BUILD_DIR/coverals/ \;
 
-    # Preparing Coveralls data by changind data format to a readable one
-    - git clone https://github.com/linux-test-project/lcov.git lcov_dir
-    - GCOV_VERSION=""
-    - if [[ "$TOOLSET" == *"-"* ]]; then GCOV_VERSION="--gcov-tool gcov-${TOOLSET#*-}"; fi
-    - LCOV="$BOOST/libs/$PROJECT_TO_TEST/test/lcov_dir/bin/lcov $GCOV_VERSION"
-    - $LCOV --directory $TRAVIS_BUILD_DIR/coverals --base-directory ./ --capture --output-file $TRAVIS_BUILD_DIR/coverals/coverage.info
+  # Preparing Coveralls data by changind data format to a readable one
+  - git clone https://github.com/linux-test-project/lcov.git lcov_dir
+  - GCOV_VERSION=""
+  - if [[ "$TOOLSET" == *"-"* ]]; then GCOV_VERSION="--gcov-tool gcov-${TOOLSET#*-}"; fi
+  - LCOV="$BOOST/libs/$PROJECT_TO_TEST/test/lcov_dir/bin/lcov $GCOV_VERSION"
+  - $LCOV --directory $TRAVIS_BUILD_DIR/coverals --base-directory ./ --capture --output-file $TRAVIS_BUILD_DIR/coverals/coverage.info
 
-    # ... erasing /test/ /example/ folder data
-    - cd $BOOST
-    - $LCOV --remove $TRAVIS_BUILD_DIR/coverals/coverage.info "/usr*" "*/$PROJECT_TO_TEST/test/*" $IGNORE_COVERAGE "*/$PROJECT_TO_TEST/tests/*" "*/$PROJECT_TO_TEST/examples/*" "*/$PROJECT_TO_TEST/example/*" -o $TRAVIS_BUILD_DIR/coverals/coverage.info
+  # ... erasing /test/ /example/ folder data
+  - cd $BOOST
+  - $LCOV --remove $TRAVIS_BUILD_DIR/coverals/coverage.info "*.cpp" "/usr*" "*/$PROJECT_TO_TEST/test/*" $IGNORE_COVERAGE "*/$PROJECT_TO_TEST/tests/*" "*/$PROJECT_TO_TEST/examples/*" "*/$PROJECT_TO_TEST/example/*" -o $TRAVIS_BUILD_DIR/coverals/coverage.info
 
-    # ... erasing data that is not related to this project directly
-    - OTHER_LIBS=`grep "submodule .*" .gitmodules | sed 's/\[submodule\ "\(.*\)"\]/"\*\/boost\/\1\.hpp" "\*\/boost\/\1\/\*"/g'| sed "/\"\*\/boost\/$PROJECT_TO_TEST\/\*\"/d" | sed ':a;N;$!ba;s/\n/ /g'`
-    - echo $OTHER_LIBS
-    - eval "$LCOV --remove $TRAVIS_BUILD_DIR/coverals/coverage.info $OTHER_LIBS -o $TRAVIS_BUILD_DIR/coverals/coverage.info"
+  # ... erasing data that is not related to this project directly
+  - OTHER_LIBS=`grep "submodule .*" .gitmodules | sed 's/\[submodule\ "\(.*\)"\]/"\*\/boost\/\1\.hpp" "\*\/boost\/\1\/\*"/g'| sed "/\"\*\/boost\/process\/\*\"/d" | sed ':a;N;$!ba;s/\n/ /g'`
+  - echo $OTHER_LIBS
+  - eval "$LCOV --remove $TRAVIS_BUILD_DIR/coverals/coverage.info $OTHER_LIBS -o $TRAVIS_BUILD_DIR/coverals/coverage.info" > /dev/null
 
-    # Sending data to Coveralls
-    - cd $TRAVIS_BUILD_DIR
-    - gem install coveralls-lcov
-    - coveralls-lcov coverals/coverage.info
+  # Sending data to Coveralls
+  - cd $TRAVIS_BUILD_DIR
+  - gem install coveralls-lcov
+  - coveralls-lcov coverals/coverage.info
+
+after_script:
+  - bash <(curl -s https://codecov.io/bash)
+  - cd $BOOST/libs/$PROJECT_TO_TEST/test
+  - curl -s https://report.ci/report.py | python - --name="$BADGE test run"

CMakeLists.txt

@@ -0,0 +1,36 @@
+# Generated by `boostdep --cmake process`
+# Copyright 2020 Peter Dimov
+# Distributed under the Boost Software License, Version 1.0.
+# https://www.boost.org/LICENSE_1_0.txt
+
+cmake_minimum_required(VERSION 3.5...3.16)
+
+project(boost_process VERSION "${BOOST_SUPERPROJECT_VERSION}" LANGUAGES CXX)
+
+add_library(boost_process INTERFACE)
+add_library(Boost::process ALIAS boost_process)
+
+target_include_directories(boost_process INTERFACE include)
+target_link_libraries(boost_process
+  INTERFACE
+    Boost::algorithm
+    Boost::asio
+    Boost::config
+    Boost::core
+    Boost::filesystem
+    Boost::fusion
+    Boost::iterator
+    Boost::move
+    Boost::optional
+    Boost::system
+    Boost::tokenizer
+    Boost::type_index
+    Boost::winapi
+)
+
+if(BUILD_TESTING AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/test/CMakeLists.txt")
+
+  add_subdirectory(test)
+
+endif()
+

README.md

@@ -1,17 +1,21 @@
-#[Boost Process (Boost.Process)](https://github.com/klemens-morgenstern/boost-process)
+# [Boost Process (Boost.Process)](https://github.com/boostorg/process)
 
-Boost.process is not yet part of the [Boost C++ Libraries](http://github.com/boostorg). It is a library for comfortable management of processes.
+Boost.process is a library for comfortable management of processes, released with boost 1.64.0.
 
 ### Test results
 
-Branches        | Build         | Tests coverage | 
-----------------|-------------- | -------------- |
-Develop:        | [![Build Status](https://travis-ci.org/klemens-morgenstern/boost-process.svg?branch=develop)](https://travis-ci.org/klemens-morgenstern/boost-process)  [![Build status](https://ci.appveyor.com/api/projects/status/peup7e6m0e1bb5ba?svg=true)](https://ci.appveyor.com/project/klemens-morgenstern/boost-process) | [![Coverage Status](https://coveralls.io/repos/github/klemens-morgenstern/boost-process/badge.svg?branch=develop)](https://coveralls.io/github/klemens-morgenstern/boost-process?branch=develop) |
-Master:         | [![Build Status](https://travis-ci.org/klemens-morgenstern/boost-process.svg?branch=master)] (https://travis-ci.org/klemens-morgenstern/boost-process) [![Build status](https://ci.appveyor.com/api/projects/status/peup7e6m0e1bb5ba/branch/master?svg=true)](https://ci.appveyor.com/project/klemens-morgenstern/boost-process/branch/master) | [![Coverage Status](https://coveralls.io/repos/github/klemens-morgenstern/boost-process/badge.svg?branch=master)](https://coveralls.io/github/klemens-morgenstern/boost-process?branch=master)   |
+| Branches | Linux / Windows                                                                                                                              | Code coverage                                                                                                                                | Matrix                                                                                                                                        | 
+|----------|----------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------|
+| Develop: | [![Build Status](https://drone.cpp.al/api/badges/boostorg/process/status.svg)](https://drone.cpp.al/boostorg/process)                        | [![codecov](https://codecov.io/gh/boostorg/process/branch/develop/graph/badge.svg?token=AhunMqTSpA)](https://codecov.io/gh/boostorg/process) | [![Matrix](https://img.shields.io/badge/matrix-develop-lightgray.svg)](http://www.boost.org/development/tests/develop/developer/process.html) |
+| Master:  | [![Build Status](https://drone.cpp.al/api/badges/boostorg/process/status.svg?ref=refs/heads/develop)](https://drone.cpp.al/boostorg/process) | [![codecov](https://codecov.io/gh/boostorg/process/branch/master/graph/badge.svg?token=AhunMqTSpA)](https://codecov.io/gh/boostorg/process)  | [![Matrix](https://img.shields.io/badge/matrix-master-lightgray.svg)](http://www.boost.org/development/tests/master/developer/process.html)   |
 
-[Open Issues](https://github.com/klemens-morgenstern/boost-process/issues)
 
-[Latest developer documentation](http://klemens-morgenstern.github.io/process/)
+
+
+
+[Open Issues](https://github.com/boostorg/process/issues)
+
+[Latest developer documentation](https://www.boost.org/doc/libs/develop/doc/html/process.html)
 
 ### About
 This C++11 library is the current result of a long attempt to get a boost.process library, which is going on since 2006.
@@ -21,4 +25,4 @@ Distributed under the [Boost Software License, Version 1.0](http://www.boost.org
 
 ### Dependency
 
-This library requires boost 1.63. Since this is not released yet you can clone the winapi module from [here](https://github.com/boostorg/winapi) to get it to work. You will need to overwrite the current code in boost/libs/winapi.
+This library requires boost 1.64 with which it is released.

doc/Jamfile.jam

@@ -11,21 +11,93 @@ using boostbook ;
 using quickbook ;
 using doxygen ;
 
+
+local images = [ glob images/*.svg ] ;
+install images      : $(images) : <location>html/boost_process ;
+install images_glob : $(images) : <location>$(BOOST_ROOT)/doc/html/boost_process ;         
+
+import type ;
+type.register XMLPROCESSWORKAROUND : : XML ;
+import generators ;
+generators.register-standard common.copy : XML : XMLPROCESSWORKAROUND ; 
+
+xmlprocessworkaround posix_pseudocode   : posix_pseudocode.xml   ; 
+xmlprocessworkaround windows_pseudocode : windows_pseudocode.xml ;
+
+path-constant INCLUDES : ../../.. ;
+
 doxygen autodoc
 :
-  ../../../boost/process.hpp
-  [ glob ../../../boost/process/*.hpp ]
-:
+  $(INCLUDES)/boost/process.hpp
+  [ glob $(INCLUDES)/boost/process/*.hpp ]
+  :
+  <doxygen:param>EXCLUDE_SYMBOLS=BOOST_ASIO_INITFN_RESULT_TYPE
   <doxygen:param>PREDEFINED=BOOST_PROCESS_DOXYGEN
   <doxygen:param>HIDE_UNDOC_CLASSES=YES
   <doxygen:param>HIDE_UNDOC_MEMBERS=YES
+  <doxygen:param>EXAMPLE_PATH=.
+  <dependency>posix_pseudocode
+  <dependency>windows_pseudocode
+  <xsl:path>.
 ;
 
+
+
+doxygen reference_v2
+:
+  $(INCLUDES)/boost/process/v2.hpp
+  [ glob $(INCLUDES)/boost/process/v2/*.hpp ]
+  :
+  <doxygen:param>EXCLUDE_SYMBOLS=BOOST_ASIO_INITFN_RESULT_TYPE
+  <doxygen:param>PROJECT_NAME="Process V2"
+  <doxygen:param>PROJECT_BRIEF="The process library"
+  <doxygen:param>MACRO_EXPANSION=YES
+  <doxygen:param>EXPAND_ONLY_PREDEF=YES
+  <doxygen:param>"PREDEFINED=\\
+    GENERATING_DOCUMENTATION=1 \\
+    BOOST_PROCESS_V2_ASIO_NAMESPACE=boost::asio \\
+    \"BOOST_PROCESS_V2_BEGIN_NAMESPACE=namespace boost { namespace process { namespace v2 { \" \\
+    \"BOOST_PROCESS_V2_END_NAMESPACE= } } }\" \\
+    BOOST_PROCESS_V2_NAMESPACE=boost::process::v2 \\
+    BOOST_PROCESS_V2_DECL \\
+    BOOST_PROCESS_V2_SOURCE \\
+    BOOST_PROCESS_V2_INITFN_AUTO_RESULT_TYPE(x,y)=deduced \\
+    BOOST_PROCESS_V2_COMPLETION_TOKEN_FOR(X)=Token \\
+    BOOST_PROCESS_V2_DEFAULT_COMPLETION_TOKEN_TYPE(E)=DEFAULT_TYPE \\
+    BOOST_ASIO_DEFAULT_COMPLETION_TOKEN=DEFAULT \\ 
+    BOOST_CONSTEXPR=constexpr \\
+    BOOST_CXX14_CONSTEXPR=constexpr \\
+    BOOST_ATTRIBUTE_NODISCARD=[[nodiscard]]
+    "
+  <doxygen.doxproc.id>reference_v2
+  <doxygen:param>SHOW_USED_FILES=NO
+  <doxygen:param>SHOW_FILES=NO
+  <doxygen:param>SHOW_NAMESPACES=YES
+  <doxygen:param>CLASS_DIAGRAMS=NO
+  <doxygen:param>SORT_MEMBERS_CTORS_1ST=YES
+  <doxygen:param>HIDE_UNDOC_CLASSES=NO
+  <xsl:path>.
+;
+
+
 boostbook standalone
 :
   process.qbk
 :
   <dependency>autodoc
+  <dependency>reference_v2
+  <dependency>images
+  <dependency>images_glob
   <xsl:param>boost.root=../../../..
   <xsl:param>html.stylesheet=../../../../doc/src/boostbook.css
 ;
+
+###############################################################################
+alias boostdoc
+    : standalone/<format>docbook
+    : 
+    : <dependency>images_glob
+    : ;
+explicit boostdoc ;
+alias boostrelease ;
+explicit boostrelease ;

doc/acknowledgements.qbk

@@ -8,4 +8,6 @@ A special thank you goes to [@http://www.intra2net.com/ Intra2net AG] (especiall
 
 Great thanks also goes to Boris Schaeling, who despite having boost.process rejected, went on to work on it and maintained it up until this day and participated in the development of the current version.
 
+Many Thanks, to [@https://github.com/time-killer-games Samuel Venable] for contributing the v2::ext functionality and all the research that went into it.
+
 [endsect]

doc/concepts.qbk

@@ -0,0 +1,82 @@
+[section:concepts Concepts]
+In this section, some of the underlying concepts of the operating system used in this library, will be explained. 
+In the following chapters we will presume knowledge of that. Though please note, 
+that this is a short summary and not conclusive of everything that can be done.
+
+The goal of this library is to implement a portable wrapper, so that we will explain mostly what
+windows and posix have in common.   
+
+[section:pipes Pipes]
+Pipes are a facility for communication between different threads, processes and in some cases machines, the operating system provides.
+
+The typical feature of a pipe is, that it is one channel, to which two handles are given, one for reading (source), one for writing (sink).
+In that it is different than other facilities (like sockets) and provides another way to manage the connectivity: if one side of the pipe is closed 
+(i.e. the pipe is broken), the other is notified.
+
+Pipes are typically used for interprocess communication. The main reason is, that pipes can be directly assigned to the process stdio, i.e. stderr, stdin and stdout.
+Additionally, half of the pipe can be inherited to the child process and closed in the father process. This will cause the pipe to be broken when the child process exits.
+
+Though please note, that if the same thread reads and writes to a pipe, it will only talk to itself.
+
+[section:anonymous Anonymous Pipes]
+
+The most common pipes are anonymous. Since they have no name,
+a handle to them can only be obtained from duplicating either handle.
+
+In this library the following functions are used for the creation of unnamed pipes:
+
+* [@http://pubs.opengroup.org/onlinepubs/7908799/xsh/pipe.html posix]
+* [@https://msdn.microsoft.com/de-de/library/windows/desktop/aa365152.aspx windows]
+
+[endsect]
+
+[section:named Named Pipes]
+
+As the name suggests, named pipes have a string identifier. This means that a 
+handle to them can be obtained with the identifier, too.
+
+The implementation on posix uses [@http://pubs.opengroup.org/onlinepubs/009695399/functions/mkfifo.html fifos],
+which means, that the named pipe behaves like a file.
+
+Windows does provide a facility called [@https://msdn.microsoft.com/en-us/library/windows/desktop/aa365150(v=vs.85).aspx named pipes],
+which also have file-like names, but are in a different scope than the actual file system.
+
+[note The main reason named pipes are part of this library, is because they need to be internally used for asynchronous communication on windows.]
+
+[endsect]
+
+[endsect]
+
+
+[section:process Processes]
+
+A process is an independently executable entity, which is different from a thread, in that it has its own resources. 
+Those include memory and hardware resources.
+
+Every process is identified by a unique number[footnote it is unique as long as the process is active], called the process identification digit, `pid`. 
+
+[section:exit_code Exit code]
+A process will return an integer value indicating whether it was successful. On posix
+there are more codes associated with that, but not so on windows. Therefore there is no such encoding currently in the library.
+However an exit code of zero means the process was successful, while one different than zero indicates an error. 
+[endsect]
+
+[section:termination Termination]
+Processes can also be forced to exit. There are two ways to do this, signal the process to do so and wait, and just terminate the process without conditions.
+
+Usually the first approach is to signal an exit request, but windows - unlike posix - does not provide a consistent way to do this. Hence this is not part of the
+library and only the hard terminate is. 
+
+[endsect]
+
+[endsect]
+
+[section:env Environment]
+
+The environment is a map of variables local to every process. The most significant one for this library
+ is the `PATH` variable, which contains a list of paths, that ought to be searched for executables. A shell will do this automatically, 
+ while this library provides a function for that. 
+
+[endsect]
+
+[endsect]

doc/design.qbk

@@ -1,12 +1,12 @@
 [section:design Design Rationale]
 [section Scope]
-This library is meant to give an wrapper around the different OS-specific methods
+This library is meant to give a wrapper around the different OS-specific methods
 to launch processes. Its aim is to provide all functionality that is available on 
 those systems and allow the user to do all related things, which require using the OS APIs.
 
-[*This library does not try to provide a full library for everything process related] 
+[*This library does not try to provide a full library for everything process related.] 
 In many discussions the proposal was made to build boost.process into a DSEL [footnote Domain Specific Embedded Language] of some sort. 
-This is not the goal, it rather provides the facilities to build such a DSEL-Library on top of it. 
+This is not the goal, it rather provides the facilities to build such a DSEL-library on top of it. 
 Therefore the library also does [*not] force any particular use (such as only asynchronous communication) on its user. 
 It rather could be integrated with such a library.  
 
@@ -33,7 +33,7 @@ Both styles can also be mixed in some cases.
 system("gcc", "-c", args+={"main.cpp"});
 ```
 
-In the following section the avaible styles will be described. Note that the
+In the following section the available styles will be described. Note that the
 overload style is implemented via type traits, so the types will be listed. 
 
 [caution There is no guarantee in which order the arguments will be applied! 
@@ -54,7 +54,7 @@ interpret each string as an argument.
 ] 
 
 When using the overloading variant, a single string will result in a cmd interpretation, 
-several strings will yield a exe-args interpretation. Both version can be set explicitly:
+several strings will yield a exe-args interpretation. Both versions can be set explicitly:
 
 ```
 system("grep -c false /etc/passwd"); //cmd style
@@ -65,8 +65,9 @@ system(exe="grep", args={"-c", "false", "/etc/passwd"}); //exe-/args-
 ```
 
 [note If a '"' sign is used in the argument style, it will be passed as part of the argument.
-If the same effect it wanted with the cmd syntax, it ought to be escaped, i.e. '\\\"'. ]
-[note On windows the path will only be searched for the executable in the command style.]
+If the same effect is wanted with the cmd syntax, it ought to be escaped, i.e. '\\\"'. ]
+[note The `PATH` variable will automatically be searched in the command style, 
+but the one of the launching process, not the one passed to the child process.]
 [endsect]
 
 [section:plat_ext Extensions]

doc/extend.qbk

@@ -0,0 +1,212 @@
+[def __on_exit__ [globalref boost::process::on_exit on_exit]]
+[def __on_success__ [globalref boost::process::extend::on_success ex::on_success]]
+[def __child__ [classref boost::process::child child]]
+[def __handler__ [classref boost::process::extend::handler handler]]
+[def __on_success__ [memberref boost::process::extend::handler::on_success on_success]]
+[def __posix_executor__ [classref boost::process::extend::posix_executor ex::posix_executor]]
+[def __windows_executor__ [classref boost::process::extend::windows_executor ex::windows_executor]]
+[def __io_context__  [@http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference/io_context.html boost::asio::io_context]]
+[def __require_io_context__ [classref boost::process::extend::require_io_context ex::require_io_context]]
+[def __async_handler__ [classref boost::process::extend::async_handler ex::async_handler]]
+[def __get_io_context__ [funcref boost::process::extend::get_io_context ex::get_io_context]]
+
+[section:extend Extensions]
+To extend the library, the header [headerref boost/process/extend.hpp extend] is provided.
+
+It only provides the explicit style for custom properties, but no implicit style.
+
+What this means is, that a custom initializer can be implemented, a reference which can be passed to one of the launching functions.
+If a class inherits [classref boost::process::extend::handler] it will be regarded as an initializer and thus directly put into the sequence 
+the executor gets passed.
+
+[section:structure Structure]
+
+The executor calls different handlers of the initializers during the process launch. 
+The basic structure consists of three functions, as given below:
+
+* [globalref boost::process::extend::on_setup on_setup]
+* [globalref boost::process::extend::on_error on_error]
+* [globalref boost::process::extend::on_success on_success]
+
+'''
+<imagedata fileref="boost_process/windows_exec.svg"/>
+'''
+
+Additionally posix provides three more handlers, listed below:
+
+* [globalref boost::process::extend::on_fork_error on_fork_error]
+* [globalref boost::process::extend::on_exec_setup on_exec_setup]
+* [globalref boost::process::extend::on_exec_error on_exec_error] 
+
+For more information see the reference of [classref boost::process::extend::posix_executor posix_executor]. 
+
+[endsect]
+[section:simple Simple extensions]
+
+The simplest extension just takes a single handler, which can be done in a functional style.
+So let's start with a simple hello-world example, while we use a C++14 generic lambda.
+
+```
+using namespace boost::process;
+namespace ex = bp::extend;
+
+__child__ c("foo", __on_success__=[](auto & exec) {std::cout << "hello world" << std::endl;});
+```
+
+Considering that lambdas can also capture values, data can easily be shared between handlers. 
+
+To see which members the executor has, refer to [classref boost::process::extend::windows_executor windows_executor]
+and [classref boost::process::extend::posix_executor posix_executor].
+
+[note Combined with __on_exit__ this can also handle the process exit.]
+
+[caution The posix handler symbols are not defined on windows.]
+
+[endsect]
+
+[section:handler Handler Types]
+
+Since the previous example is in a functional style, it is not very reusable. 
+To solve that problem, the [classref boost::process::extend::handler handler] has an alias in the `boost::process::extend` namespace, to be inherited.
+So let's implement the hello world example in a class.
+
+```
+struct hello_world : __handler__
+{
+    template<typename Executor>
+    void __on_success__(Executor & exec) const
+    {
+        std::cout << "hello world" << std::endl;
+    }
+};
+
+//in our function
+__child__ c("foo", hello_world()); 
+```
+
+[note The implementation is done via overloading, not overriding.]
+
+Every handler not implemented defaults to [classref boost::process::extend::handler handler], where an empty handler is defined for each event.
+
+[endsect]
+
+
+
+[section:async Asynchronous Functionality]
+
+Since `boost.process` provides an interface for [@http://www.boost.org/doc/libs/release/libs/asio/ boost.asio], 
+this functionality is also available for extensions. If the class needs the __io_context__ for some reason, the following code will do that.
+
+```
+struct async_foo : __handler__, __require_io_context__
+{
+    template<typename Executor>
+    void on_setup(Executor & exec)
+    {
+        __io_context__ & ios = __get_io_context__(exec.seq); //gives us a reference and a compiler error if not present.
+        //do something with ios
+    }
+};
+```
+[note Inheriting [globalref boost::process::extend::require_io_context require_io_context] is necessary, so [funcref boost::process::system system] provides one.]
+
+Additionally the handler can provide a function that is invoked when the child process exits. This is done through __async_handler__.
+
+[note [globalref boost::process::extend::async_handler async_handler] implies [globalref boost::process::extend::require_io_context require_io_context] .]
+
+```
+struct async_bar : __handler, __async_handler__
+{
+    template<typename Executor>
+    std::function<void(int, const std::error_code&)> on_exit_handler(Executor & exec)
+    {
+        auto handler_ = this->handler;
+        return [handler_](int exit_code, const std::error_code & ec)
+               {
+                   std::cout << "hello world, I exited with " << exit_code << std::endl; 
+               };
+    
+    }
+}; 
+```
+
+
+[caution `on_exit_handler` does not default and is always required when [classref boost::process::extend::async_handler async_handler] is inherited. ]
+
+[caution `on_exit_handler` uses `boost::asio::signal_set` to listen for SIGCHLD on posix. The application must not also register a signal handler for SIGCHLD using functions such as `signal()` or `sigaction()` (but using `boost::asio::signal_set` is fine). ]
+
+[endsect]
+
+[section:error Error handling]
+
+If an error occurs in the initializers it shall be told to the executor and not handled directly. This is because
+the behaviour can be changed through arguments passed to the launching function. Hence the executor
+has the function `set_error`, which takes an [@http://en.cppreference.com/w/cpp/error/error_code std::error_code] and a string.
+Depending on the configuration of the executor, this may either throw, set an internal `error_code`, or do nothing.
+
+So let's take a simple example, where we set a randomly chosen `error_code`.
+
+```
+auto set_error = [](auto & exec)
+        {
+            std::error_code ec{42, std::system_category()};
+            exec.set_error(ec, "a fake error");
+            
+        };
+__child__ c("foo", on_setup=set_error);
+```
+
+Since we do not specify the error-handling mode in this example, this will throw [classref boost::process::process_error process_error]. 
+
+[endsect]
+
+[section:exec_over Executor Overloading]
+
+Now that we have a custom initializer, let's consider how we can handle differences between different executors.
+The distinction is between posix and windows and `char` and `wchar_t` on windows. 
+One solution is to use the [@http://www.boost.org/doc/libs/master/boost/system/api_config.hpp BOOST_WINDOWS_API and BOOST_POSIX_API] macros,
+which are automatically available as soon as any process-header is included.
+
+Another variant are the type aliases __posix_executor__ and __windows_executor__, where the executor, not on the current system is a forward-declaration.
+This works fine, because the function will never get invoked. So let's implement another example, which prints the executable name __on_success__.
+
+```
+struct hello_exe : __handler__
+{
+    template<typename Sequence>
+    void __on_success__(__posix_executor__<Sequence> & exec)
+    {
+        std::cout << "posix-exe: " << exec.exe << std::endl;
+    }
+    
+    template<typename Sequence>
+    void __on_success__(__windows_executor__<char, Sequence> & exec)
+    {
+        //note: exe might be a nullptr on windows.
+        if (exec.exe != nullptr)
+            std::cout << "windows-exe: " << exec.exe << std::endl;
+        else
+            std::cout << "windows didn't use exe" << std::endl;
+    }
+    
+    template<typename Sequence>
+    void __on_success__(__windows_executor__<wchar_t, Sequence> & exec)
+    {
+        //note: exe might be a nullptr on windows.
+        if (exec.exe != nullptr)
+            std::wcout << L"windows-exe: " << exec.exe << std::endl;
+        else
+            std::cout << "windows didn't use exe" << std::endl;
+    }
+    
+};
+```
+
+So given our example, the definitions with the non-native executor are still a template so that they will not be evaluated if not used. Hence this provides a
+way to implement system-specific code without using the preprocessor.
+
+[note If you only write a partial implementation, e.g. only for __posix_executor__, the other variants will default to __handler__].
+
+[endsect]
+
+[endsect]

doc/faq.qbk

@@ -1,87 +1,87 @@
-[section:faq Frequently Asked Questions]
-
-[section:dead_lock Why does this produce a deadlock?]
-
-Now let's revisit our c++filt example and we will put in an obvious mistake.
-This might however be not as obvious for more complex applications.
-
-```
-vector<string> demangle(vector<string> in)
-{
-    
-    ipstream is;
-    opstream os;
-    child c("c++filt", std_out > is, std_in < os);
- 
-    vector<string> data;   
-    for (auto & elem : data)
-    {
-        string line;
-        getline(is, line);
-        os << elem;
-    }
-}
- 
-```
-We switched the read and write operation up, so that's causing a dead-lock.
-This locks immediately. This is because `c++filt` expects input, before 
-outputting any data. The launching process on the other hand wait's for it's output.
-
-[endsect]
-
-[section:closep Why does the pipe not close?]
-
-Now for another example, which might look correct, let's consider you want
-to use `ls` to read the current directory.
-
-```
-ipstream is;
-child c("ls", std_out > is);
-
-std::string file;
-while (is >> file)
-    cout << "File: " << file << endl;
-   
-``` 
-
-This will also deadlock, because the pipe does not close when the subprocess exits.
-So the `ipstream` will still look for data even though the process has ended.
-
-[note It is not possible to use automatically pipe-closing in this library, because 
-a pipe might be a file-handle (as for async pipes on windows).]
-
-But, since pipes are buffered, you might get incomplete data if you do this:
-
-```
-ipstream is;
-child c("ls", std_out > is);
-
-std::string file;
-while (c.running())
-{   
-    is >> file;
-    cout << "File: " << file << endl;
-}
-```
-
-It is therefore highly recommended that you use the asynchronous api if you are
-not absolutely sure how the output will look.
-
-[endsect]
-
-[section:wchar_t When will the codecvt be used?]
-
-Since windows does not use UTF-8 it is sometimes unavoidable to use the `wchar_t` version of the WinApi.
-To keep this library consistent it provides `wchar_t` support on posix also.
-
-Since the posix api is purely `char` every `wchar_t` based type will be converted into `char`.
-
-Windows on the other hand is more selective; the default is to use `char`, 
-but if any parameter requires `wchar_t`, everything will be converted to `wchar_t`.
-This also includes `boost::filesystem::path`. Additionally, if the system does not provide
-the `char` api (as is the case with Windows CE) everything will also be converted.
-
-
-[endsect]
-
+[section:faq Frequently Asked Questions]
+
+[section:dead_lock Why does this produce a deadlock?]
+
+Now let's revisit our c++filt example and we will put in an obvious mistake.
+This might however be not as obvious for more complex applications.
+
+```
+vector<string> demangle(vector<string> in)
+{
+    
+    ipstream is;
+    opstream os;
+    child c("c++filt", std_out > is, std_in < os);
+ 
+    vector<string> data;   
+    for (auto & elem : data)
+    {
+        string line;
+        getline(is, line);
+        os << elem;
+    }
+}
+ 
+```
+We switched the read and write operation up, so that's causing a dead-lock.
+This locks immediately. This is because `c++filt` expects input, before
+outputting any data. The launching process on the other hand waits for its output.
+
+[endsect]
+
+[section:closep Why does the pipe not close?]
+
+Now for another example, which might look correct, let's consider you want
+to use `ls` to read the current directory.
+
+```
+ipstream is;
+child c("ls", std_out > is);
+
+std::string file;
+while (is >> file)
+    cout << "File: " << file << endl;
+   
+``` 
+
+This will also deadlock, because the pipe does not close when the subprocess exits.
+So the `ipstream` will still look for data even though the process has ended.
+
+[note It is not possible to use automatic pipe-closing in this library, because 
+a pipe might be a file-handle (as for async pipes on windows).]
+
+But, since pipes are buffered, you might get incomplete data if you do this:
+
+```
+ipstream is;
+child c("ls", std_out > is);
+
+std::string file;
+while (c.running())
+{   
+    is >> file;
+    cout << "File: " << file << endl;
+}
+```
+
+It is therefore highly recommended that you use the asynchronous API if you are
+not absolutely sure how the output will look.
+
+[endsect]
+
+[section:wchar_t When will the codecvt be used?]
+
+Since windows does not use UTF-8 it is sometimes unavoidable to use the `wchar_t` version of the WinApi.
+To keep this library consistent it provides `wchar_t` support on posix also.
+
+Since the posix api is purely `char` every `wchar_t` based type will be converted into `char`.
+
+Windows on the other hand is more selective; the default is to use `char`, 
+but if any parameter requires `wchar_t`, everything will be converted to `wchar_t`.
+This also includes `boost::filesystem::path`. Additionally, if the system does not provide
+the `char` api (as is the case with Windows CE) everything will also be converted.
+
+
+[endsect]
+
 [endsect]

doc/images/plantuml.txt

@@ -0,0 +1,118 @@
+Plantuml source file (for later edit)
+// Style
+
+skinparam backgroundColor #FFFFFF
+
+skinparam sequence {
+    ActorBorderColor DeepSkyBlue
+    ArrowColor #4a6484
+    
+    LifeLineBorderColor #4a6484
+    ParticipantBackgroundColor  #91c6ff
+    ParticipantBorderColor black
+    BoxBorderColor black
+}
+
+
+//posix no error
+/**
+\plantuml
+activate Father 
+
+box "Child Process" #LightGrey
+    participant Child
+    participant Exe
+end box
+
+Father->Father : on_setup
+activate Father
+deactivate Father
+Father->Child : fork
+activate Child 
+Father -> Father : wait for error
+deactivate Father
+
+
+Child->Child : on_exec_setup
+activate Child
+deactivate Child
+Child->Exe : execve
+deactivate Child
+activate Father
+activate Exe 
+
+Father -> Father : on_success 
+activate Father
+deactivate Father
+
+\endplantuml */
+
+//posix exec error
+/**
+\plantuml
+activate Father 
+
+Father->Father : on_setup
+activate Father
+deactivate Father
+Father->Child : fork
+activate Child 
+Father -> Father : wait for error
+deactivate Father
+
+Child->Child : on_exec_setup
+activate Child
+deactivate Child
+Child->Child : execve
+Child->Child : on_exec_error
+activate Child
+deactivate Child
+Child->Father : report
+deactivate Child
+activate Father 
+Father -> Father : on_error
+activate Father
+deactivate Father
+\endplantuml 
+
+//posix fork error
+\plantuml
+activate Father 
+
+Father->Father : on_setup
+activate Father
+deactivate Father
+Father->Father : fork
+Father -> Father : on_fork_error
+activate Father
+deactivate Father
+Father -> Father : on_error
+activate Father
+deactivate Father
+\endplantuml
+
+
+//windows.
+\plantuml
+activate Father 
+
+Father->Father : on_setup
+activate Father
+deactivate Father
+Father->Child : CreateProcess
+activate Child
+
+alt Successful Launch
+
+Father -> Father : on_success
+activate Father
+deactivate Father
+
+else Error during launch
+
+Father -> Father : on_error
+activate Father
+deactivate Father
+
+end
+\endplantuml

doc/images/posix_fork_err.svg

@@ -0,0 +1 @@
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doc/introduction.qbk

@@ -13,12 +13,12 @@ Here's a simple example of how to start a program with Boost.Process:
 [def ipstream  [classref boost::process::ipstream ipstream]]
 [def system [funcref boost::process::system system]]
 [def std_out [globalref boost::process::std_out std_out]]
+[def child [globalref boost::process::child child]]
 [def boost/process.hpp [headerref boost/process.hpp boost/process.hpp]]
-
+[def std::string [@http://en.cppreference.com/w/cpp/string/basic_string std::string]]
+[def std::getline [@http://en.cppreference.com/w/cpp/string/basic_string/getline std::getline]]
 
 [import ../example/intro.cpp]
 [intro]
 
-[caution This is not yet an official Boost C++ library. It wasn't reviewed and can't be downloaded from [@http://www.boost.org/ www.boost.org]. It is however the latest version of an ongoing effort to create a process management library for Boost. For now the library can be downloaded or cloned from here [@https://github.com/klemens-morgenstern/boost-process/tree/develop https://github.com/klemens-morgenstern/boost-process/tree/develop].]
-
 [endsect]

doc/posix_pseudocode.xml

@@ -0,0 +1,60 @@
+<?xml version="1.0" standalone="yes"?>
+<programlisting>
+for (auto &amp; s : seq)
+    s.<methodname alt="boost::process::extend::handler::on_setup">on_setup</methodname>(*this);
+
+if (<methodname alt="boost::process::extend::posix_executor::error">error</methodname>())
+{
+    for (auto &amp; s : seq)
+       s.<methodname alt="boost::process::extend::handler::on_error">on_error</methodname>(*this, <methodname alt="boost::process::extend::posix_executor::error">error</methodname>());
+    return <classname alt="boost::process::child">child</classname>();
+}
+
+pid = <ulink url="http://pubs.opengroup.org/onlinepubs/009695399/functions/fork.html">fork()</ulink>
+<methodname alt="boost::process::extend::handler::on_setup">on_setup</methodname>(*this);
+
+if (pid == -1) //fork error 
+{
+    <methodname alt="boost::process::extend::posix_executor::set_error">set_error</methodname>(<functionname alt="boost::process::extend::get_last_error">get_last_error</functionname>());
+    for (auto &amp; s : seq)
+        s.<methodname alt="boost::process::extend::handler::on_fork_error">on_fork_error</methodname>(*this, <methodname alt="boost::process::extend::posix_executor::error">error</methodname>());
+    for (auto &amp; s : seq)
+        s.<methodname alt="boost::process::extend::handler::on_error">on_error</methodname>(*this, <methodname alt="boost::process::extend::posix_executor::error">error</methodname>());
+    return <classname alt="boost::process::child">child</classname>()
+}
+else if (pid == 0) //child process
+{
+    for (auto &amp; s : seq)
+        s.<methodname alt="boost::process::extend::handler::on_exec_setup">on_exec_setup</methodname>(*this);
+    <ulink url="http://pubs.opengroup.org/onlinepubs/009695399/functions/exec.html">execve</ulink>(exe, cmd_line, env);
+    auto ec = <functionname alt="boost::process::extend::get_last_error">get_last_error</functionname>();
+    for (auto &amp; s : seq)
+        s.<methodname alt="boost::process::extend::handler::on_exec_error">on_exec_error</methodname>(*this);
+
+    <emphasis>unspecified();</emphasis>//here the error is sent to the father process internally
+
+    <ulink url="http://en.cppreference.com/w/cpp/utility/program/exit">std::exit</ulink>(<ulink url="http://en.cppreference.com/w/c/program/EXIT_status">EXIT_FAILURE</ulink>);
+    return <classname alt="boost::process::child">child</classname>(); //for C++ compliance
+}
+
+<classname alt="boost::process::child">child</classname> c(pid, exit_code);
+
+<emphasis>unspecified();</emphasis>//here, we read the error from the child process
+
+if (<methodname alt="boost::process::extend::posix_executor::error">error</methodname>())
+    for (auto &amp; s : seq)
+        s.<methodname alt="boost::process::extend::handler::on_error">on_error</methodname>(*this, <methodname alt="boost::process::extend::posix_executor::error">error</methodname>());
+else
+    for (auto &amp; s : seq)
+        s.<methodname alt="boost::process::extend::handler::on_error">on_success</methodname>(*this);
+
+//now we check again, because an on_success handler might've errored.
+if (<methodname alt="boost::process::extend::posix_executor::error">error</methodname>())
+{
+    for (auto &amp; s : seq)
+        s.<methodname alt="boost::process::extend::handler::on_error">on_error</methodname>(*this, <methodname alt="boost::process::extend::posix_executor::error">error</methodname>());
+    return <classname alt="boost::process::child">child</classname>();
+}
+else
+    return c;
+</programlisting>

doc/process.qbk

@@ -11,9 +11,14 @@
     ]
 ]
 
+[note [link process.v2 Process V2] is available as  experimental]
+
 [include introduction.qbk]
+[include concepts.qbk]
 [include tutorial.qbk]
 [include design.qbk]
+[include extend.qbk]
 [include faq.qbk]
 [xinclude autodoc.xml]
 [include acknowledgements.qbk]
+[include v2.qbk]

doc/tutorial.qbk

@@ -1,20 +1,27 @@
 [def bp::system [funcref boost::process::system bp::system]]
-[def bp::spawn [funcref boost::process::system bp::spawn]]
+[def bp::async_system [funcref boost::process::async_system bp::async_system]]
+[def bp::spawn [funcref boost::process::spawn bp::spawn]]
 [def bp::child [classref boost::process::child bp::child]]
+[def bp::cmd [classref boost::process::cmd bp::cmd]]
 [def bp::group [classref boost::process::group bp::group]]
 [def bp::ipstream [classref boost::process::ipstream bp::ipstream]]
 [def bp::opstream [classref boost::process::opstream bp::opstream]]
 [def bp::pstream [classref boost::process::pstream bp::pstream]]
 [def bp::pipe  [classref boost::process::pipe bp::pipe]]
+[def bp::async_pipe [classref boost::process::async_pipe bp::async_pipe]]
+[def bp::search_path  [funcref boost::process::search_path bp::search_path]]
 [def boost_org  [@www.boost.org "www.boost.org"]]
 [def std::system [@http://en.cppreference.com/w/cpp/utility/program/system std::system]]
 [def child_running [memberref boost::process::child::running running]]
 [def child_wait [memberref boost::process::child::wait wait]]
+[def child_wait_for [memberref boost::process::child::wait_for wait_for]]
 [def child_exit_code [memberref boost::process::child::exit_code exit_code]]
+[def group_wait_for [memberref boost::process::group::wait_for wait_for]]
 [def bp::on_exit [globalref boost::process::on_exit bp::on_exit]]
 [def bp::null [globalref boost::process::null bp::null]]
 [def child_terminate [memberref boost::process::child::terminate terminate]]
 [def group_terminate [memberref boost::process::group::terminate terminate]]
+[def group_wait [memberref boost::process::group::wait wait]]
 [def bp::std_in [globalref boost::process::std_in bp::std_in]]
 [def bp::std_out [globalref boost::process::std_out bp::std_out]]
 [def bp::std_err [globalref boost::process::std_err bp::std_err]]
@@ -24,22 +31,24 @@
 [def bp::environment  [classref boost::process::basic_environment bp::environment]]
 [def bp::native_environment  [classref boost::process::basic_native_environment bp::native_environment]]
 [def boost::this_process::environment [funcref boost::this_process::environment boost::this_process::environment]]
+[def std::chrono::seconds [@http://en.cppreference.com/w/cpp/chrono/duration std::chrono::seconds]]
+[def std::vector [@http://en.cppreference.com/w/cpp/container/vector std::vector]]
 
-
-[def __wait_for__  [memberref boost::process::child::wait_for wait_for]]
-[def __wait_until__  [memberref boost::process::child::wait_until wait_until]]
-[def __detach__  [memberref boost::process::child::detach detach]]
-
+[def __wait_for__ [memberref boost::process::child::wait_for wait_for]]
+[def __wait_until__ [memberref boost::process::child::wait_until wait_until]]
+[def __detach__ [memberref boost::process::child::detach detach]]
 
 [def __reference__ [link process.reference reference]]
+[def __concepts__ [link boost_process.concepts concepts]]
 
 [def boost::asio::yield_context [@http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference/yield_context.html boost::asio::yield_context]]
 [def boost::asio::coroutine [@http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference/coroutine.html boost::asio::coroutine]]
+[def bp::env [globalref boost::process::env bp::env]]
 
 [section:tutorial Tutorial]
 
 In this section we will go step by step through the different features of
-boost.process. For a full description see the __reference__.
+boost.process. For a full description see the __reference__ and the __concepts__ sections.
 
 [section Starting a process]
 
@@ -59,55 +68,66 @@ namespace bp = boost::process; //we will assume this for all further examples
 int result = bp::system("g++ main.cpp");
 ```
 
-The first thing we can do, is to separate the command and the executable into
-two parts, so it is more readable and can be built by a function.
+If a single string is given (or the explicit form bp::cmd), it will be interpreted as a command line. 
+That will cause the execution function to search the `PATH` variable to find the executable. 
+The alternative is the `exe-args` style, where the first string will be interpreted as a filename (including the path),
+and the rest as arguments passed to said function.   
+
+[note For more details on the `cmd`/`exe-args` style look [link boost_process.design.arg_cmd_style here].]
+
+So as a first step, we'll use the `exe-args` style.
 
 ```
-int result = bp::system("g++", "main.cpp");
+int result = bp::system("/usr/bin/g++", "main.cpp");
 ```
 
-With that sytax we still have "g++" hard-coded, so let's assume we get the string
-from an external source as `boost::filesystem::path`, we can do this too.
+With that syntax we still have "g++" hard-coded, so let's assume we get the string
+from an external source as `boost::process::filesystem::path`, we can do this too.
 
 ```
-boost::filesystem::path p = "g++"; //or get it from somewhere else.
+boost::process::filesystem::path p = "/usr/bin/g++"; //or get it from somewhere else.
 int result = bp::system(p, "main.cpp");
 ```
 
-Now, there is a subtle difference between the two syntaxes, i.e. passing a
-single string or passing multiple. When passing multiple string, the first string will be
-interpreted as the name of a file and the rest as arguments; 
-when passing one string it will be interpreted as a command. 
+Now we might want to find the `g++` executable in the `PATH`-variable, as the `cmd` syntax would do. 
+`Boost.process` provides a function to this end: bp::search_path.
 
-For more details please see the [link boost_process.design.arg_cmd_style design description].
+```
+boost::process::filesystem::path p = bp::search_path("g++"); //or get it from somewhere else.
+int result = bp::system(p, "main.cpp");
+```
+
+[note [funcref boost::process::search_path search_path] will search for any executable with that name. 
+This also includes to add a file suffix on windows, such as `.exe` or `.bat`.]
 
 [endsect]
 
 [section:launch_mode Launch functions]
 
-Given that in our example used the [funcref boost::process::system system] function, 
-our program will wait until the child process is completed. This is unwanted, 
+Given that our example used the [funcref boost::process::system system] function, 
+our program will wait until the child process is completed. This may be unwanted, 
 especially since compiling can take a while. 
 
 In order to avoid that, boost.process provides several ways to launch a process.
-Besides the already mentioned [funcref boost::process::system system] function,
+Besides the already mentioned [funcref boost::process::system system] function and its
+asynchronous version [funcref boost::process::async_system async_system],
 we can also use the [funcref boost::process::spawn spawn] function or the
 [classref boost::process::child child] class.
 
 The [funcref boost::process::spawn spawn] function launches a process and 
-immediately detaches so, so no handle will be returned and the process will be ignored.
+immediately detaches it, so no handle will be returned and the process will be ignored.
 This is not what we need for compiling, but maybe we want to entertain the user,
 while compiling:
 
 ```
-bp::spawn("chrome", boost_org);
+bp::spawn(bp::search_path("chrome"), boost_org);
 ```
 
-Now for the more sensible approach for compiling, we want a non-blocking execution. 
+Now for the more sensible approach for compiling: a non-blocking execution. 
 To implement that, we directly call the constructor of [classref boost::process::child child].
 
 ```
-bp::child c("g++", "main.cpp");
+bp::child c(bp::search_path("g++"), "main.cpp");
 
 while (c.child_running())
     do_some_stuff();
@@ -121,7 +141,7 @@ things while the process is running and afterwards get the exit code. The call
 to child_wait is necessary, to obtain it and tell the operating system, that no
 one is waiting for the process anymore.
 
-[note You can also wait for a time span or a until a time point with __wait_for__ and __wait_until__]
+[note You can also wait for a time span or until a time point with __wait_for__ and __wait_until__.]
 
 [warning If you don't call wait on a child object, it will be terminated on destruction.
 This can be avoided by calling __detach__ beforehand]  
@@ -131,14 +151,14 @@ This can be avoided by calling __detach__ beforehand]
 
 Until now, we have assumed that everything works out, but it is not impossible, 
 that "g++" is not present. That will cause the launch of the process to fail.
-The default behaviour of all functions is to throw an 
+The default behaviour of all functions is to throw a 
 [@http://en.cppreference.com/w/cpp/error/system_error std::system_error] on failure.
 As with many other functions in this library, passing an [@http://en.cppreference.com/w/cpp/error/error_code std::error_code]
-will change the behaviour, so that instead of throwing an exception, the error will be a assigned to the error code.
+will change the behaviour, so that instead of throwing an exception, the error will be assigned to the error code.
 
 ```
 std::error_code ec;
-bp::system c("g++", "main.cpp", ec);
+bp::system("g++ main.cpp", ec);
 ```
 [endsect]
 [section:io Synchronous I/O]
@@ -148,20 +168,20 @@ The default depends on the system, but usually this will just write it to the sa
 If this shall be guaranteed, the streams can be explicitly forwarded like this.
 
 ```
-   bp::system("g++", bp::std_out > stdout, bp::std_err > stderr, bp::std_in < stdin);
+   bp::system("g++ main.cpp", bp::std_out > stdout, bp::std_err > stderr, bp::std_in < stdin);
 ``` 
 
 Now for the first example, we might want to just ignore the output, which can be done by redirecting it to the null-device.
 This can be achieved this way:
 
 ```
-bp::system("g++", "main.cpp", bp::std_out > bp::null);
+bp::system("g++ main.cpp", bp::std_out > bp::null);
 ```
 
 Alternatively we can also easily redirect the output to a file:
 
 ```
-bp::system("g++", "main.cpp", bp::std_out > "gcc_out.log");
+bp::system("g++ main.cpp", bp::std_out > "gcc_out.log");
 ```
 
 Now, let's take a more visual example for reading data. 
@@ -180,7 +200,7 @@ wrap around the [classref boost::process::pipe pipe] and provide an implementati
 std::vector<std::string> read_outline(std::string & file)
 {
     bp::ipstream is; //reading pipe-stream
-    bp::child c("nm", file, bp::std_out > is);
+    bp::child c(bp::search_path("nm"), file, bp::std_out > is);
     
     std::vector<std::string> data;
     std::string line;
@@ -197,8 +217,7 @@ std::vector<std::string> read_outline(std::string & file)
 What this does is redirect the `stdout` of the process into a pipe and we read this
 synchronously.
 
-[warning The pipe will cause a deadlock if you try to read after nm exited]
-[note You can do the same thing with [globalref boost::process::std_err std_err]] 
+[note You can do the same thing with [globalref boost::process::std_err std_err].]
 
 Now we get the name from `nm` and we might want to demangle it, so we use input and output.
 `nm` has a demangle option, but for the sake of the example, we'll use 
@@ -227,23 +246,21 @@ std::vector<std::string> read_demangled_outline(const std::string & file)
     
     std::vector<std::string> outline;
     
-    //we just use the same pipe, so the 
-    bp::child nm("nm", file, bp::std_out > p); 
-    bp::child filt("c++filt", bp::std_in < p, bp::std_out > is);
+    //we just use the same pipe, so the output of nm is directly passed as input to c++filt
+    bp::child nm(bp::search_path("nm"), file,  bp::std_out > p); 
+    bp::child filt(bp::search_path("c++filt"), bp::std_in < p, bp::std_out > is);
     
-    while (nm.running()) //nm finishes automatically, so then we can terminate c++filt.
-    {
-        std::string line;
-        std::getline(is, line);
+    std::string line;
+    while (filt.running() && std::getline(is, line)) //when nm finished the pipe closes and c++filt exits
         outline.push_back(line);
-    }
+
     nm.child_wait();
-    filt.child_terminate(); 
+    filt.wait(); 
 }
 
 ```  
 
-Now this forwards the data from `nm` to `c++filt` without your process needing to do anything.
+This forwards the data from `nm` to `c++filt` without your process needing to do anything.
 
 [endsect]
 [section:async_io Asynchronous I/O]
@@ -253,46 +270,44 @@ If you are familiar with [@http://www.boost.org/doc/libs/release/libs/asio/ boos
 you can use [classref boost::process::async_pipe async_pipe] which is implemented 
 as an I/O-Object and can be used like [classref boost::process::pipe pipe] as shown above.
 
-Now we get back to our compiling example. `nm` we might analyze it line by line,
+Now we get back to our compiling example. For `nm` we might analyze the output line by line,
 but the compiler output will just be put into one large buffer.
 
 With [@http://www.boost.org/doc/libs/release/libs/asio/ boost.asio] this is what it looks like.
 
 ```
 io_service ios;
-std::vector<char> buf;
+std::vector<char> buf(4096);
 
 bp::async_pipe ap(ios);
 
-child c("g++", "main.cpp", bp::std_out > ap);
+bp::child c(bp::search_path("g++"), "main.cpp", bp::std_out > ap);
 
 asio_async_read(ap, asio_buffer(buf), 
                 [](const boost::system::error_code &ec, std::size_t size){});
 
 ios.run();
-c.wait();
 int result = c.exit_code();
 ```
 
-To make it easier, boost.process provides simpler interface for that, so that the buffer can be passed directly, 
+To make it easier, boost.process provides a simpler interface for that, so that the buffer can be passed directly, 
 provided we also pass a reference to an io_service. 
 
 ```
 io_service ios;
-std::vector<char> buf;
+std::vector<char> buf(4096);
 
-child c("g++", "main.cpp", bp::std_out > asio_buffer(buf), ios);
+bp::child c(bp::search_path("g++"), "main.cpp", bp::std_out > asio_buffer(buf), ios);
 
 ios.run();
-c.wait();
 int result = c.exit_code();
 ```
 
 [note Passing an instance of io_service to the launching function automatically cause it to wait asynchronously for the exit, so no call of 
-[memberref boost::process::child::wait wait] is needed]
+[memberref boost::process::child::wait wait] is needed.]
  
 To make it even easier, you can use [@http://en.cppreference.com/w/cpp/thread/future std::future] for asynchronous operations
-(you will still need to pass a reference to a io_service) to the launching function, unless you use bp::system.
+(you will still need to pass a reference to a io_service) to the launching function, unless you use bp::system or bp::async_system.
 
 Now we will revisit our first example and read the compiler output asynchronously:
 
@@ -310,26 +325,70 @@ child c("g++", "main.cpp", //set the input
 
 ios.run(); //this will actually block until the compiler is finished
 
-auto err =  fut.get();
+auto err =  data.get();
 ```
 
 [endsect]
 [section:group Groups]
 
-When launching several processes, processes can be grouped together. 
+When launching several processes, they can be grouped together. 
 This will also apply for a child process, that launches other processes, 
-if they do not modifiy the group membership. E.g. if you call `make` which 
+if they do not modify the group membership. E.g. if you call `make` which 
 launches other processes and call terminate on it, 
 it will not terminate all the child processes of the child unless you use a group.
 
+The two main reasons to use groups are:
+
+# Being able to terminate child processes of the child process
+# Grouping several processes into one, just so they can be terminated at once
+
+If we have a program like `make`, which does launch its own child processes, 
+a call of child_terminate might not suffice. I.e. if we have a makefile launching `gcc` 
+and use the following code, the `gcc` process will still run afterwards:
+
 ```
-bp::group g;
-bp::child c1("foo", g);
-bp::child c2("bar", g);
-g.group_terminate();
+bp::child c("make");
+if (!c.child_wait_for(std::chrono::seconds(10)) //give it 10 seconds
+    c.child_terminate(); //then terminate
 ```
 
-Please see to the [headerref boost/process/group.hpp reference] for more information.
+So in order to also terminate `gcc` we can use a group.
+
+```
+bp::group g;
+bp::child c("make", g);
+if (!g.group_wait_for(std::chrono::seconds(10))
+    g.group_terminate();
+    
+c.child_wait(); //to avoid a zombie process & get the exit code
+```
+
+Now given the example, we still call child_wait to avoid a zombie process. 
+An easier solution for that might be to use [funcref boost::process::spawn spawn].
+
+
+To put two processes into one group, the following code suffices. Spawn already 
+launches a detached process (i.e. without a child-handle), but they can be grouped, 
+to that in the case of a problem, RAII is still a given. 
+
+```
+void f()
+{
+    bp::group g;
+    bp::spawn("foo", g);
+    bp::spawn("bar", g);
+    
+    do_something();
+    
+    g.group_wait();
+};
+```
+
+In the example, it will wait for both processes at the end of the function unless 
+an exception occurs. I.e. if an exception is thrown, the group will be terminated.
+
+
+Please see the [headerref boost/process/group.hpp reference] for more information.
 
 [endsect]
 [section:env Environment]
@@ -343,89 +402,24 @@ auto env = boost::this_process::environment();
 //add a variable to the current environment
 env["VALUE_1"] = "foo";
 
-//copy it into a environment seperate to the one of this process
+//copy it into an environment separate to the one of this process
 bp::environment env_ = env;  
-//add a value only to the new env
-env_["VALUE_2"] = "bar";
+//append two values to a variable in the new env
+env_["VALUE_2"] += {"bar1", "bar2"};
 
 //launch a process with `env_`
 bp::system("stuff", env_); 
 ```
 
 A more convenient way to modify the environment for the child is the 
-[globalref boost::process::env env] property.
-
-Please see to the [headerref boost/process/environment.hpp reference] for more information.
-
-
-[endsect]
-
-
-[section:coro Coroutines]
-[section:stackless Stackless Coroutines]
-
-[note This section presumes knowledge of the boost.asio 
-[@http://www.boost.org/doc/libs/release/doc/html/boost_asio/overview/core/coroutine.html stackless coroutine] feature.]
-
-Stackless coroutines can be implemented rather easily, so there is no need to
-implement extra functionality concerning boost.process. 
+[globalref boost::process::env env] property, which can be used in the example as following:
 
 ```
-struct stackless_t : boost::asio::coroutine
-{
-    bp::child c;
-
-    boost::asio::io_service & ios;
-    
-    stackless_t(boost::asio::io_service & ios) : ios(ios) {}
-    
-    void operator()(
-            boost::system::error_code ec = boost::system::error_code(),
-            std::size_t n = 0)
-    {
-        if (!ec) reenter (this)
-        {
-             c = bp::child("my_program", ios, 
-                    bp::on_exit=
-                    [this](int, const std::error_code&)
-                    {
-                        (*this)(); //this is the reentry for the coroutine
-                    });
-            yield; //yield the thing.
-        }
-    }
-};
-///post the coroutine to a io-service and run it
-int main()
-{
-    boost::asio::io_service ios;
-    ios.post(stackless_t(ios));
-    ios.run();
-    return 0;
-}
-```
-
-[endsect]
-
-[section:stackful Stackful Coroutines]
-
-[note This section presumes knowledge of the boost.asio 
-[@http://www.boost.org/doc/libs/release/doc/html/boost_asio/overview/core/spawn.html stackful coroutine] feature.]
-
-For stackful coroutines this is not as simple, because the members of 
-`boost::asio::yield_context` are not documented. Therefore, boost.process 
-provides a simple way to use stackful coroutines, which looks as follows:
+bp::system("stuff", bp::env["VALUE_1"]="foo", bp::env["VALUE_2"]+={"bar1", "bar2"});
 
-```
-void cr(boost::asio::yield_context yield_)
-{
-    bp::system("my-program", yield_);
-}
 ```
 
-This will automatically suspend the coroutine until the child process is finished.
+Please see the [headerref boost/process/environment.hpp reference] for more information.
 
 [endsect]
 [endsect]
-
-[endsect]

doc/v2.qbk

@@ -0,0 +1,11 @@
+[section:v2 Process V2]
+
+[include v2/introduction.qbk]
+[include v2/quickstart.qbk]
+[include v2/launcher.qbk]
+[include v2/start_dir.qbk]
+[include v2/stdio.qbk]
+[include v2/env.qbk]
+[xinclude reference_v2.xml]
+
+[endsect]

doc/v2/env.qbk

@@ -0,0 +1,48 @@
+[section:env Environment]
+
+The `environment` namespace provides all sorts of facilities to query and manipulate the environment of the current process.
+
+The api should be straight forward, but one oddity that needs to be pointed out is, that environment names
+are not case sensitive on windows. The key_traits class implements the proper traits depending on the current system.
+
+Additionally, environment can be lists separated by `:` or `;`; `environment::value` and
+`environment::value_view` can be used to iterate those.
+
+Beyond that, the requirements on an environment are a low as possible; 
+an environment is either a list of strings or a list of string-pairs. It is however recommended to use the environment types,
+as to have the right value comparisons.
+
+To note is the `find_executable` functions, which searches in an environment for an executable.
+
+```
+    // search in the current environment
+    auto exe = environment::find_executable("g++");
+
+    std::unordered_map<environment::key, environment::value> my_env =
+        {
+            {"SECRET", "THIS_IS_A_TEST"}
+            {"PATH", {"/bin", "/usr/bin"}
+        };
+
+    auto other_exe = environment::find_executable("g++", my_env);
+```
+
+[section:process_env Subprocess environment]
+
+The subprocess environment assignment follows the same constraints:
+
+```
+    asio::io_context ctx;
+    std::unordered_map<environment::key, environment::value> my_env =
+        {
+            {"SECRET", "THIS_IS_A_TEST"}
+            {"PATH", {"/bin", "/usr/bin"}
+        };
+    auto exe = find_executable("g++"), my_env);
+    process proc(ctx, exe, {"main.cpp"}, process_environment(my_env));
+    process pro2(ctx, exe, {"test.cpp"}, process_environment(my_env));
+```
+
+[endsect]
+
+[endsect]

doc/v2/introduction.qbk

@@ -0,0 +1,94 @@
+[section:introduction Introduction]
+
+Boost.process V2 is an redesign of boost.process, based on previous 
+design mistakes & improved system APIs.
+
+The major changes are
+
+* Simplified interface
+* Reliance on pidfd_open on linux
+* Full asio integration
+* Removed unreliable functionality
+* UTF8 Support
+* separate compilation
+* fd safe by default
+
+[section:simplified Simplified Interface]
+
+In process v1 one can define partial settings in the constructor of the process, 
+which has lead to a small DSL.
+
+ child c{exe="test", args+="--help", std_in < null(), env["FOO"] += "BAR"};
+
+While this looks fancy at first, it really does not scale well with more parameters.
+For process v2, the interfaces is simple: 
+
+ extern std::unordered_map<std::string, std::string> my_env;
+ extern asio::io_context ctx;
+ process proc(ctx, "./test", {"--help"}, process_io{nullptr, {}, {}}, process_environment(my_env));
+
+Every initializer addresses one logical component (e.g. stdio) instead of multiple ones accumulating.
+Furthermore, every process has a path and arguments, instead of a confusing mixture of cmd-style and 
+exe-args that can be randomly spread out.
+
+[endsect]
+
+[section:pidfd_open pidfd_open]
+
+Since process v1 came out, linux has moved along and added pidfd_open which allows users to get a 
+file descriptor for a process. This is much more reliable since it is not as easy to miss as a `SIGCHLD`.
+FreeBSD has a similar feature with `pdfork` which is also supported, while windows has provided `HANDLE`s 
+for processes all along.
+Unless the OS doesn't support it, process v2 will use file descriptors and handles to implement waiting 
+for processes.
+
+[endsect]
+
+[section:asio Full asio integration]
+
+Process v1 aimed to make asio optional, but synchronous IO with subprocesses usually means one is begging 
+for deadlocks.
+Since asio added pipes in boost 1.78, boost process V2 is fully asio based and uses it's pipes and 
+file-handles for the subprocess.
+
+[endsect]
+
+[section:unreliable Unreliable functionality]
+
+Certain parts of boost.process were not as reliable as they should've been. 
+
+This concerns especially the `wait_for` and `wait_until` functions on the process.
+The latter are easy to do on windows, but posix does not provide an API for this. 
+Thus the wait_for used signals or fork, which was all but safe. 
+Since process v2 is based on asio and thus supports cancellation, 
+a wait_for can not safely be implemented with an async_wait + timeout.
+
+[endsect]
+
+[section:utf8 UTF-8]
+
+["UTF-8 or GTFO]--Vinnie Falco
+
+Instead of using ascii-APIs on windows, process V2 just assumes UTF-8 everywhere.
+
+[endsect]
+
+[section:src Separate compilation]
+
+Boost.process v2 supports separate compilation similar to other boost libraries. 
+It can be achieved by defining `BOOST_PROCESS_V2_SEPARATE_COMPILATION` and including 
+`<process/v2/src.hpp>` in a single compile unit.
+
+[endsect]
+
+[section:limit_fd Fd safe by default]
+
+While not a problem on windows (since HANDLEs get manually enabled for inheritance),
+posix systems create a problem with inheriting file handles by default.
+
+Process V2 will automatically close all non-whitelisted descriptors, 
+without needing any option to enable it.
+
+[endsect]
+
+[endsect]

doc/v2/launcher.qbk

@@ -0,0 +1,128 @@
+[section:launchers Launcher]
+
+The process creation is done by a process_launcher. 
+The constructor of `process` will use the default_launcher, which varies by system.
+There are additional launcher available on most systems.
+
+[table:launchers Launcher overview
+    [[Name]                           [Summary] [Default on] [Available on]]
+    [[`windows::default_launcher`]    [Launcher using `CreateProcessW`]   [windows] [windows]]
+    [[`windows::as_user_launcher`]    [Launcher using `CreateProcessAsUserW`]    [] [windows]]
+    [[`windows::with_logon_launcher`] [Launcher using `CreateProcessWithLogonW`] [] [windows]]
+    [[`windows::with_token_launcher`] [Launcher using `CreateProcessWithTokenW`] [] [windows]]
+    [[`posix::default_launcher`]      [Launcher using fork & an error pipe] [most of posix]  [posix]]
+    [[`posix::fork_and_forget`]       [Launcher using fork without error pipe] []            [posix]]
+    [[`posix::pdfork_launcher`]       [Launcher using pdfork with an error pipe] [FreeBSD] [FreeBSD]]
+    [[`posix::vfork_launcher`]        [Launcher using vfork] [] [posix]]
+]
+
+A launcher is invoked through the call operator.
+
+```
+    auto l = windows::as_user_launcher((HANDLE)0xDEADBEEF);
+    asio::io_context ctx;
+    boost::system::error_code ec;
+    auto proc = l(ctx, ec, "C:\\User\\boost\\Downloads\\totally_not_a_virus.exe", {});
+```
+
+The launcher will call certain functions on the initializer if they're present, as documented below.
+The initializer are used to modify the process behaviour.
+
+[section:linux Linux Launchers]
+
+The default and pdfork launchers on linux open an internal pipe to communicate errors that occur after forking back to the parent process.
+
+This can be prevented by using the `fork_and_forget_launcher`. 
+Alternatively, the `vfork_launcher` can report errors directly back to the parent process.
+
+Thus some calls to the initializers occur after forking from the child process.
+
+```
+    struct custom_initializer
+    {
+        // functions called from the parent process:
+
+
+        // called before a call to fork. A returned error will cancel the launch.
+        template<typename Launcher>
+        error_code on_setup(Launcher & launcher, const filesystem::path &executable, const char * const * (&cmd_line));
+
+        // called for every initializer if an error occurred during setup or process creation
+        template<typename Launcher>
+        void on_error(Launcher & launcher, const filesystem::path &executable, const char * const * (&cmd_line),
+                      const error_code & ec);
+
+        // called after successful process creation
+        template<typename Launcher>
+        void on_success(Launcher & launcher, const filesystem::path &executable, const char * const * (&cmd_line));
+
+        // called for every initializer if an error occurred when forking, in addition to on_error.
+        template<typename Launcher>
+        void on_fork_error(Launcher & launcher, const filesystem::path &executable, const char * const * (&cmd_line),
+                           const error_code & ec);
+
+
+        // called before a call to execve. A returned error will cancel the launch. Called from the child process.
+        template<typename Launcher>
+        error_code on_exec_setup(Launcher & launcher, const filesystem::path &executable, const char * const * (&cmd_line));
+
+
+        // called after a failed call to execve from the child process.
+        template<typename Launcher>
+        void on_exec_error(Launcher & launcher, const filesystem::path &executable, const char * const * (&cmd_line));
+    };
+```
+
+The call sequence on success:
+'''
+<imagedata fileref="boost_process/posix_success.svg"/>
+'''
+
+The call sequence when fork fails:
+'''
+<imagedata fileref="boost_process/posix_fork_err.svg"/>
+'''
+
+The call sequence when exec fails:
+'''
+<imagedata fileref="boost_process/posix_exec_err.svg"/>
+'''
+
+The launcher will close all non-whitelisted file descriptors after `on_exec_setup`.
+
+[endsect]
+
+[section:windows Windows Launchers]
+
+Windows launchers are pretty straight forward, they will call the following functions on the initializer if present.
+
+```
+    struct custom_initializer
+    {
+        // called before a call to CreateProcess. A returned error will cancel the launch.
+        template<typename Launcher>
+        error_code on_setup(Launcher & launcher, const filesystem::path &executable, std::wstring &cmd_line);
+
+        // called for every initializer if an error occurred during setup or process creation
+        template<typename Launcher>
+        void on_error(Launcher & launcher, const filesystem::path &executable, std::wstring &cmd_line,
+                      const error_code & ec);
+
+        // called after successful process creation
+        template<typename Launcher>
+        void on_success(Launcher & launcher, const filesystem::path &executable, std::wstring &cmd_line);
+
+    };
+```
+
+[note All the additional launchers for windows inherit `default_launcher`]
+
+The call sequence is as follows:
+'''
+<imagedata fileref="boost_process/windows_exec.svg"/>
+'''
+
+[endsect]
+
+
+[endsect]

doc/v2/quickstart.qbk

@@ -0,0 +1,124 @@
+[section:quickstart Quickstart]
+
+A process needs four things to be launched:
+
+* an asio execution_context / executor 
+* a path to an executable
+* a list of arguments
+* a variadic set of initializers
+
+```
+     // process(asio::any_io_executor, filesystem::path, range<string> args, AdditionalInitializers...)
+    asio::io_context ctx;
+    process proc(ctx, "/usr/bin/cp", {"source.txt", "target.txt"});
+```
+ 
+
+The started process can then be awaited or terminated.
+
+[section:lifetime Lifetime]
+
+If the process handle goes out of scope, it will terminate the subprocess.
+You can prevent this, by calling `proc.detach()`; do however note that this 
+can lead to zombie processes.
+
+A process that completed will deliver an exit-code, 
+which can be obtained by calling `.exit_code` on the exited process and which is
+also returned from `.wait()`.
+
+```
+ process proc("/bin/ls", {});
+ assert(proc.wait() == 0);
+```
+
+The normal exit-code is what the subprocess returned from `main`;
+posix will however add additional information about the process.
+This is called the `native_exit_code`.
+
+
+The `.running()` function can be used to detect if the process is still active.
+
+[endsect]
+
+[section:signal Signalling the subprocess]
+
+The parent process can signal the subprocess demanding certain actions.
+
+`.terminate` will cause the subprocess to exit immediately (`SIGKILL` on posix).
+This is the only reliable & portable way to end a subprocess.
+
+```
+    process proc("/bin/totally-not-a-virus", {});
+    proc.terminate();
+```
+
+`.request_exit` will ask the subprocess to shutdown (`SIGTERM` on posix),
+which the subprocess might ignore.
+
+```
+    process proc("/bin/bash", {});
+    proc.request_exit();
+    proc.wait();
+```
+
+`.interrupt` will send an SIGINT to the subprocess, which a subprocess might 
+interpret as a signal to shutdown.
+
+[warning interrupt requires the initializer `windows::create_new_process_group` to be set]
+
+```
+    process proc("/usr/bin/addr2line", {});
+    proc.request_exit();
+    proc.wait();
+```
+
+[endsect]
+
+[section:execute Execute functions]
+
+Process v2 provides  `execute` and `async_execute` functions that can be used for managed executions.
+
+```
+ assert(execute(process("/bin/ls", {}) == 0));
+```
+
+The async version supports cancellation and will forward cancellation types as follows:
+
+- asio::cancellation_type::total    -> interrupt
+- asio::cancellation_type::partial  -> request_exit
+- asio::cancellation_type::terminal -> terminate
+
+```
+    asio::io_context ctx;
+    asio::steady_timer timeout{ctx, std::chrono::seconds(10)};
+
+    asio::cancellation_signal sig;
+    async_execute(process("/usr/bin/g++", {"hello_world.cpp"}), 
+                 asio::bind_cancellation_slot(sig.slot(), 
+                                              [&](error_code ec, int exit_code)
+                                              {
+                                                  timeout.cancel(); // we're done earlier
+                                              }));
+
+    timeout.async_wait(
+        [&](error_code ec) 
+        {
+            if (ec) // we were cancelled, do nothing
+                return ;
+            sig.emit(asio::cancellation_type::partial); 
+            // request exit first, but terminate after another 10 sec
+            timeout.expires_after(std::chrono::seconds(10));
+            timeout.async_wait(
+                [&](error_code ec)
+                {
+                    if (!ec)
+                        sig.emit(asio::cancellation_type::terminal); 
+                });
+            );
+        });
+
+```
+
+[endsect]
+
+[endsect]

doc/v2/start_dir.qbk

@@ -0,0 +1,16 @@
+[section:start_dir process_start_dir]
+
+The easier initializer to use is `process_start_dir`:
+
+```
+    asio::io_context ctx;
+    process ls(ctx, "/ls", {}, process_start_dir("/home"));
+    ls.wait();
+```
+
+This will run `ls` in the folder `/home` instead of the current folder.
+
+[warning If your path is relative, it may fail on posix, because the directory is changed before a call to execve.]
+
+
+[endsect]

doc/v2/stdio.qbk

@@ -0,0 +1,89 @@
+[section:stdio stdio]
+
+When using io with a subprocess, all three standard streams (stdin, stdout, stderr) get set for the child-process.
+The default setting is to inherit the parent process.
+
+This feature meant to be flexible, which is why there is little checking on the arguments assigned to one of those streams. 
+
+[section:pipe Pipe]
+
+asio pipes can be used for io. When using in process_stdio they will get 
+automatically connected and the other side will get assigned to the child process:
+
+```
+    asio::io_context ctx;
+    asio::readable_pipe rp;
+
+    process proc(ctx, "/usr/bin/g++", {"--version"}, process_stdio{{ /* in to default */}, rp, { /* err to default */ }});
+    std::string output;
+
+    system::error_code ec;
+    rp.read(asio::dynamic_buffer(output), ec);
+    assert(ec == asio::eof);
+    proc.wait();
+```
+
+readable pipes can be assigned to `out` an `err`, while writable_pipes can be assigned to `in`.
+
+[endsect]
+
+[section:file `FILE*`]
+
+`FILE*` can also be used for either side; this allows the `stdin`, `stderr`, `stdout` macros to be used:
+
+```
+    asio::io_context ctx;
+    // forward both stderr & stdout to stdout of the parent process
+    process proc(ctx, "/usr/bin/g++", {"--version"}, process_stdio{{ /* in to default */}, stdout, stdout});
+    proc.wait();
+```
+
+[endsect]
+
+[section:null `nullptr`]
+
+`nullptr` may be used to set a given stream to be opened on the null-device (`/dev/null` on posix, `NUL` on windows). 
+This is used to ignore output or give only EOF as input.
+
+```
+    asio::io_context ctx;
+    // ignore stderr
+    process proc(ctx, "/usr/bin/g++", {"--version"}, process_stdio{{ /* in to default */}, {}, nullptr});
+    proc.wait();
+```
+
+[endsect]
+
+
+[section:native_handle `native_handle`]
+
+A native handle can be used as well, which means an `int` on posix or a `HANDLE` on windows. 
+Furthermore, any object that has a `native_handle` returning that native handle type is valid, too.
+
+
+```
+    asio::io_context ctx;
+    // ignore stderr
+    asio::ip::tcp::socket sock{ctx};
+    connect_my_socket(sock);
+    process proc(ctx, "~/not-a-virus", {}, process_stdio{sock, sock, nullptr});
+    proc.wait();
+```
+
+[endsect]
+
+[section:popen popen]
+
+Additionally, process v2 provides a `popen` class. 
+It starts a process and connects pipes for stdin and stdout, so that the popen object can be used as a stream.
+
+```
+   popen proc(executor, "/usr/bin/addr2line, {argv[0]});
+   asio::write(proc, asio::buffer("main\n"));
+   std::string line;
+   asio::read_until(proc, asio::dynamic_buffer(line), '\n');
+```
+
+[endsect]
+
+[endsect]

doc/windows_pseudocode.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" standalone="yes"?>
+<programlisting>
+for (auto &amp; s : seq)
+    s.<methodname alt="boost::process::extend::handler::on_setup">on_setup</methodname>(*this);
+
+if (<methodname alt="boost::process::extend::windows_executor::error">error</methodname>())
+{
+    for (auto &amp; s : seq)
+       s.<methodname alt="boost::process::extend::handler::on_error">on_error</methodname>(*this, <methodname alt="boost::process::extend::windows_executor::error">error</methodname>());
+    return <classname alt="boost::process::child">child</classname>();
+}
+int err_code = <ulink url="https://msdn.microsoft.com/en-us/library/windows/desktop/ms682425.aspx">CreateProcess</ulink>(
+         exe,
+         cmd_line,
+         proc_attrs,
+         thread_attrs,
+         creation_flags,
+         env,
+         work_dir,
+         startup_info,
+         proc_info);
+
+<classname alt="boost::process::child">child</classname> c(proc_info, exit_code);
+
+if (<methodname alt="boost::process::extend::windows_executor::error">error</methodname>())
+    for (auto &amp; s : seq)
+        s.<methodname alt="boost::process::extend::handler::on_error">on_error</methodname>(*this, <methodname alt="boost::process::extend::windows_executor::error">error</methodname>());
+else
+    for (auto &amp; s : seq)
+        s.<methodname alt="boost::process::extend::handler::on_error">on_success</methodname>(*this);
+
+//now we check again, because an on_success handler might've errored.
+if (<methodname alt="boost::process::extend::windows_executor::error">error</methodname>())
+{
+    for (auto &amp; s : seq)
+        s.<methodname alt="boost::process::extend::handler::on_error">on_error</methodname>(*this, <methodname alt="boost::process::extend::windows_executor::error">error</methodname>());
+    return <classname alt="boost::process::child">child</classname>();
+}
+else
+    return c;
+
+</programlisting>

example/async_io.cpp

@@ -16,7 +16,7 @@ namespace bp = boost::process;
 
 int main()
 {
-    boost::asio::io_service ios;
+    boost::asio::io_context ios;
     boost::asio::streambuf buffer;
 
 

example/intro.cpp

@@ -10,12 +10,15 @@
 //[intro
 #include <boost/process.hpp>
 
+#include <string>
+#include <iostream>
+
 using namespace boost::process;
 
 int main()
 {
     ipstream pipe_stream;
-    child c("gcc.exe", "--version", std_out > pipe_stream);
+    child c("gcc --version", std_out > pipe_stream);
 
     std::string line;
 

example/io.cpp

@@ -22,7 +22,7 @@ int main()
         bp::std_in < bp::null //null in
     );
 
-    boost::filesystem::path p = "input.txt";
+    boost::process::filesystem::path p = "input.txt";
 
     bp::system(
         "test.exe",
@@ -44,14 +44,14 @@ int main()
 
     }
     {
-        boost::asio::io_service io_service;
-        bp::async_pipe p1(io_service);
-        bp::async_pipe p2(io_service);
+        boost::asio::io_context io_context;
+        bp::async_pipe p1(io_context);
+        bp::async_pipe p2(io_context);
         bp::system(
             "test.exe",
             bp::std_out > p2,
             bp::std_in < p1,
-            io_service,
+            io_context,
             bp::on_exit([&](int exit, const std::error_code& ec_in)
                 {
                     p1.async_close();
@@ -64,7 +64,7 @@ int main()
         boost::asio::async_read (p2, boost::asio::buffer(in_buf), []( const boost::system::error_code&, std::size_t){});
     }
     {
-        boost::asio::io_service io_service;
+        boost::asio::io_context io_context;
         std::vector<char> in_buf;
         std::string value = "my_string";
         bp::system(
@@ -75,7 +75,7 @@ int main()
     }
 
     {
-        boost::asio::io_service io_service;
+        boost::asio::io_context io_context;
         std::future<std::vector<char>> in_buf;
         std::future<void> write_fut;
         std::string value = "my_string";

example/posix.cpp

@@ -9,37 +9,38 @@
 
 #include <boost/process.hpp>
 #include <boost/process/posix.hpp>
+#include <boost/process/extend.hpp>
 #include <iostream>
 #include <fstream>
 #include <unistd.h>
 #include <errno.h>
 
-using namespace boost::process;
+namespace bp = boost::process;
 
 int main()
 {
 
     //duplicate our pipe descriptor into literal position 4
-    pipe p;
-    system("test", posix::fd.bind(4, p.native_sink())    );
+    bp::pipe p;
+    bp::system("test", bp::posix::fd.bind(4, p.native_sink()));
 
 
     //close file-descriptor from explicit integral value
-    system("test", posix::fd.close(STDIN_FILENO));
+    bp::system("test", bp::posix::fd.close(STDIN_FILENO));
 
     //close file-descriptors from explicit integral values
-    system("test", posix::fd.close({STDIN_FILENO, STDOUT_FILENO}));
+    bp::system("test", bp::posix::fd.close({STDIN_FILENO, STDOUT_FILENO}));
 
     //add custom handlers
     const char *env[2] = { 0 };
     env[0] = "LANG=de";
-    system("test",
-        on_setup([env](auto &e) { e.env = const_cast<char**>(env); }),
-        posix::on_fork_error([](auto&)
+    bp::system("test",
+        bp::extend::on_setup([env](auto &e) { e.env = const_cast<char**>(env); }),
+        bp::extend::on_fork_error([](auto&, const std::error_code & ec)
             { std::cerr << errno << std::endl; }),
-        posix::on_exec_setup([](auto&)
+        bp::extend::on_exec_setup([](auto&)
             { ::chroot("/new/root/directory/"); }),
-        posix::on_exec_error([](auto&)
+        bp::extend::on_exec_error([](auto&, const std::error_code & ec)
             { std::ofstream ofs("log.txt"); if (ofs) ofs << errno; })
     );
 

example/start_dir.cpp

@@ -8,7 +8,7 @@
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
 #include <boost/process.hpp>
-#include <boost/filesystem.hpp>
+#include <boost/process/filesystem.hpp>
 
 namespace bp = boost::process;
 
@@ -19,9 +19,9 @@ int main()
         bp::start_dir="../foo"
     );
 
-    boost::filesystem::path exe = "test.exe";
+    boost::process::filesystem::path exe = "test.exe";
     bp::system(
-        boost::filesystem::absolute(exe),
+        boost::process::filesystem::absolute(exe),
         bp::start_dir="../foo"
     );
 }

example/v2/Jamfile.jam

@@ -0,0 +1,17 @@
+# Copyright (c) 2022 Klemens Morgenstern
+#
+# Distributed under the Boost Software License, Version 1.0. (See accompanying
+# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+project : requirements
+  <include>../../..
+  <toolset>msvc:<define>_SCL_SECURE_NO_WARNINGS
+  <target-os>windows:<define>WIN32_LEAN_AND_MEAN
+;
+
+import testing ;
+
+alias filesystem   : /boost//filesystem : <link>static ;
+
+exe intro : intro.cpp filesystem ;
+exe intro_popen : intro_popen.cpp filesystem ;

example/v2/intro.cpp

@@ -0,0 +1,39 @@
+// Copyright (c) 2022 Klemens Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//[intro
+#include <boost/process/v2.hpp>
+
+#include <boost/asio/read.hpp>
+#include <boost/asio/readable_pipe.hpp>
+#include <boost/system/error_code.hpp>
+
+#include <string>
+#include <iostream>
+
+namespace proc   = boost::process::v2;
+namespace asio   = boost::asio;
+
+
+int main()
+{
+    asio::io_context ctx;
+    asio::readable_pipe p{ctx};
+
+    const auto exe = proc::environment::find_executable("gcc");
+
+    proc::process c{ctx, exe, {"--version"}, proc::process_stdio{nullptr, p}};
+
+    std::string line;
+    boost::system::error_code ec;
+
+    auto sz = asio::read(p, asio::dynamic_buffer(line), ec);
+    assert(ec == asio::error::eof);
+
+    std::cout << "Gcc version: '"  << line << "'" << std::endl;
+
+    c.wait();
+}
+//]

example/v2/intro_popen.cpp

@@ -0,0 +1,36 @@
+// Copyright (c) 2022Klemens Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+//[intro
+#include <boost/process/v2.hpp>
+
+#include <boost/asio/read.hpp>
+#include <boost/asio/readable_pipe.hpp>
+#include <boost/system/error_code.hpp>
+
+#include <string>
+#include <iostream>
+
+namespace proc   = boost::process::v2;
+namespace asio   = boost::asio;
+
+
+int main()
+{
+    asio::io_context ctx;
+    const auto exe = proc::environment::find_executable("gcc");
+    proc::popen c{ctx, exe, {"--version"}};
+
+    std::string line;
+    boost::system::error_code ec;
+
+    auto sz = asio::read(c, asio::dynamic_buffer(line), ec);
+    assert(ec == asio::error::eof);
+
+    std::cout << "Gcc version: '"  << line << "'" << std::endl;
+
+    c.wait();
+}
+//]

example/wait.cpp

@@ -21,14 +21,14 @@ int main()
     }
 
     {
-        boost::asio::io_service io_service;
+        boost::asio::io_context io_context;
 
         bp::child c(
             "test.exe",
-            io_service,
+            io_context,
             bp::on_exit([&](int exit, const std::error_code& ec_in){})
         );
 
-        io_service.run();
+        io_context.run();
     }
 }

example/windows.cpp

@@ -8,6 +8,7 @@
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
 #include <boost/process.hpp>
+#include <boost/process/extend.hpp>
 #include <boost/process/windows.hpp>
 #include <iostream>
 
@@ -22,9 +23,9 @@ int main()
 
 
     bp::system("test.exe",
-        bp::on_setup([](auto &e)
+        bp::extend::on_setup([](auto &e)
             { e.startup_info.dwFlags = STARTF_RUNFULLSCREEN; }),
-        bp::on_error([](auto&, const std::error_code & ec)
+        bp::extend::on_error([](auto&, const std::error_code & ec)
             { std::cerr << ec.message() << std::endl; })
         );
 }

filter_section_warning.py

@@ -0,0 +1,14 @@
+#!/usr/bin/python
+#
+
+import sys
+
+for line in sys.stdin:
+    # If line is a 'noisy' warning, don't print it or the following two lines.
+    if ('warning: section' in line and 'is deprecated' in line
+            or 'note: change section name to' in line):
+        next(sys.stdin)
+        next(sys.stdin)
+    else:
+        sys.stdout.write(line)
+        sys.stdout.flush()

include/boost/process.hpp

@@ -21,6 +21,7 @@
 
 #include <boost/process/args.hpp>
 #include <boost/process/async.hpp>
+#include <boost/process/async_system.hpp>
 #include <boost/process/group.hpp>
 #include <boost/process/child.hpp>
 #include <boost/process/cmd.hpp>
@@ -29,6 +30,7 @@
 #include <boost/process/error.hpp>
 #include <boost/process/exe.hpp>
 #include <boost/process/group.hpp>
+#include <boost/process/handles.hpp>
 #include <boost/process/io.hpp>
 #include <boost/process/pipe.hpp>
 #include <boost/process/shell.hpp>

include/boost/process/args.hpp

@@ -138,7 +138,7 @@ struct args_
 
     arg_setter_<char, true> operator()(std::initializer_list<const char*> &&range) const
     {
-        return arg_setter_<char>(range.begin(), range.end());
+        return arg_setter_<char, true>(range.begin(), range.end());
     }
     arg_setter_<char, true> operator+=(std::initializer_list<const char*> &&range) const
     {
@@ -146,11 +146,11 @@ struct args_
     }
     arg_setter_<char, false> operator= (std::initializer_list<const char*> &&range) const
     {
-        return arg_setter_<char, true>(range.begin(), range.end());
+        return arg_setter_<char, false>(range.begin(), range.end());
     }
     arg_setter_<char, true> operator()(std::initializer_list<std::string> &&range) const
     {
-        return arg_setter_<char>(range.begin(), range.end());
+        return arg_setter_<char, true>(range.begin(), range.end());
     }
     arg_setter_<char, true> operator+=(std::initializer_list<std::string> &&range) const
     {
@@ -158,12 +158,12 @@ struct args_
     }
     arg_setter_<char, false> operator= (std::initializer_list<std::string> &&range) const
     {
-        return arg_setter_<char, true>(range.begin(), range.end());
+        return arg_setter_<char, false>(range.begin(), range.end());
     }
 
     arg_setter_<wchar_t, true> operator()(std::initializer_list<const wchar_t*> &&range) const
     {
-        return arg_setter_<wchar_t>(range.begin(), range.end());
+        return arg_setter_<wchar_t, true>(range.begin(), range.end());
     }
     arg_setter_<wchar_t, true> operator+=(std::initializer_list<const wchar_t*> &&range) const
     {
@@ -171,11 +171,11 @@ struct args_
     }
     arg_setter_<wchar_t, false> operator= (std::initializer_list<const wchar_t*> &&range) const
     {
-        return arg_setter_<wchar_t, true>(range.begin(), range.end());
+        return arg_setter_<wchar_t, false>(range.begin(), range.end());
     }
     arg_setter_<wchar_t, true> operator()(std::initializer_list<std::wstring> &&range) const
     {
-        return arg_setter_<wchar_t>(range.begin(), range.end());
+        return arg_setter_<wchar_t, true>(range.begin(), range.end());
     }
     arg_setter_<wchar_t, true> operator+=(std::initializer_list<std::wstring> &&range) const
     {
@@ -183,7 +183,7 @@ struct args_
     }
     arg_setter_<wchar_t, false> operator= (std::initializer_list<std::wstring> &&range) const
     {
-        return arg_setter_<wchar_t, true>(range.begin(), range.end());
+        return arg_setter_<wchar_t, false>(range.begin(), range.end());
     }
 };
 

include/boost/process/async.hpp

@@ -5,9 +5,9 @@
 
 /** \file boost/process/async.hpp
 
-The header which provides the basic asynchrounous features.
+The header which provides the basic asynchronous features.
 It provides the on_exit property, which allows callbacks when the process exits.
-It also implements the necessary traits for passing an boost::asio::io_service,
+It also implements the necessary traits for passing an boost::asio::io_context,
 which is needed for asynchronous communication.
 
 It also pulls the [boost::asio::buffer](http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference/buffer.html)
@@ -32,20 +32,20 @@ namespace boost {
 #include <boost/process/detail/traits.hpp>
 #include <boost/process/detail/on_exit.hpp>
 
-#include <boost/asio/io_service.hpp>
+#include <boost/asio/io_context.hpp>
 #include <boost/asio/streambuf.hpp>
 #include <boost/asio/buffer.hpp>
 #include <type_traits>
 #include <boost/fusion/iterator/deref.hpp>
 
 #if defined(BOOST_POSIX_API)
-#include <boost/process/detail/posix/io_service_ref.hpp>
+#include <boost/process/detail/posix/io_context_ref.hpp>
 #include <boost/process/detail/posix/async_in.hpp>
 #include <boost/process/detail/posix/async_out.hpp>
 #include <boost/process/detail/posix/on_exit.hpp>
 
 #elif defined(BOOST_WINDOWS_API)
-#include <boost/process/detail/windows/io_service_ref.hpp>
+#include <boost/process/detail/windows/io_context_ref.hpp>
 #include <boost/process/detail/windows/async_in.hpp>
 #include <boost/process/detail/windows/async_out.hpp>
 #include <boost/process/detail/windows/on_exit.hpp>
@@ -56,25 +56,25 @@ namespace boost { namespace process { namespace detail {
 struct async_tag;
 
 template<typename T>
-struct is_io_service : std::false_type {};
+struct is_io_context : std::false_type {};
 template<>
-struct is_io_service<api::io_service_ref> : std::true_type {};
+struct is_io_context<api::io_context_ref> : std::true_type {};
 
 template<typename Tuple>
-inline asio::io_service& get_io_service(const Tuple & tup)
+inline asio::io_context& get_io_context(const Tuple & tup)
 {
-    auto& ref = *boost::fusion::find_if<is_io_service<boost::mpl::_>>(tup);
+    auto& ref = *boost::fusion::find_if<is_io_context<boost::mpl::_>>(tup);
     return ref.get();
 }
 
 struct async_builder
 {
-    boost::asio::io_service * ios;
+    boost::asio::io_context * ios;
 
-    void operator()(boost::asio::io_service & ios_) {this->ios = &ios_;};
+    void operator()(boost::asio::io_context & ios_) {this->ios = &ios_;};
 
-    typedef api::io_service_ref result_type;
-    api::io_service_ref get_initializer() {return api::io_service_ref (*ios);};
+    typedef api::io_context_ref result_type;
+    api::io_context_ref get_initializer() {return api::io_context_ref (*ios);};
 };
 
 
@@ -90,7 +90,7 @@ using ::boost::asio::buffer;
 
 
 #if defined(BOOST_PROCESS_DOXYGEN)
-/** When an io_service is passed, the on_exit property can be used, to be notified
+/** When an io_context is passed, the on_exit property can be used, to be notified
     when the child process exits.
 
 
@@ -101,15 +101,26 @@ on_exit=function;
 on_exit(function);
 \endcode
 
-with `function` being a callable object with the signature `(int, const std::error_code&)`.
+with `function` being a callable object with the signature `(int, const std::error_code&)` or an
+`std::future<int>`.
 
 \par Example
 
 \code{.cpp}
-io_service ios;
-spawn("ls", on_exit=[](int exit, const std::error_code& ec_in){});
+io_context ios;
+
+child c("ls", ios, on_exit=[](int exit, const std::error_code& ec_in){});
+
+std::future<int> exit_code;
+chlid c2("ls", ios, on_exit=exit_code);
+
 \endcode
 
+\note The handler is not invoked when the launch fails.
+\warning When used \ref ignore_error it might get invoked on error.
+\warning `on_exit` uses `boost::asio::signal_set` to listen for `SIGCHLD` on posix, and so has the
+same restrictions as that class (do not register a handler for `SIGCHLD` except by using
+`boost::asio::signal_set`).
  */
 constexpr static ::boost::process::detail::on_exit_ on_exit{};
 #endif

include/boost/process/async_pipe.hpp

@@ -26,7 +26,7 @@ namespace boost { namespace process {
 #if defined(BOOST_PROCESS_DOXYGEN)
 
 
-/** Class implementing and asnychronous I/O-Object for use with boost.asio.
+/** Class implementing an asnychronous I/O-Object for use with boost.asio.
  *  It is based on the corresponding I/O Object, that is either boost::asio::windows::stream_handle or
  *  boost::asio::posix::stream_descriptor.
  *
@@ -47,32 +47,34 @@ public:
      */
     typedef platform_specific handle_type;
 
+    typedef typename handle_type::executor_type executor_type;
+
     /** Construct a new async_pipe, does automatically open the pipe.
-     * Initializes source and sink with the same io_service.
+     * Initializes source and sink with the same io_context.
      * @note Windows creates a named pipe here, where the name is automatically generated.
      */
-    inline async_pipe(boost::asio::io_service & ios);
+    inline async_pipe(boost::asio::io_context & ios);
 
     /** Construct a new async_pipe, does automatically open the pipe.
      * @note Windows creates a named pipe here, where the name is automatically generated.
      */
-    inline async_pipe(boost::asio::io_service & ios_source,
-                      boost::asio::io_service & ios_sink);
+    inline async_pipe(boost::asio::io_context & ios_source,
+                      boost::asio::io_context & ios_sink);
 
     /** Construct a new async_pipe, does automatically open.
-     * Initializes source and sink with the same io_service.
+     * Initializes source and sink with the same io_context.
      *
      * @note Windows restricts possible names.
      */
-    inline async_pipe(boost::asio::io_service & ios, const std::string & name);
+    inline async_pipe(boost::asio::io_context & ios, const std::string & name);
 
 
     /** Construct a new async_pipe, does automatically open.
      *
      * @note Windows restricts possible names.
      */
-    inline async_pipe(boost::asio::io_service & ios_source,
-                      boost::asio::io_service & ios_sink, const std::string & name);
+    inline async_pipe(boost::asio::io_context & ios_source,
+                      boost::asio::io_context & ios_sink, const std::string & name);
 
     /** Copy-Constructor of the async pipe.
      * @note Windows requires a named pipe for this, if a the wrong type is used an exception is thrown.
@@ -89,15 +91,15 @@ public:
      *
      */
     template<class CharT, class Traits = std::char_traits<CharT>>
-    explicit async_pipe(boost::asio::io_service & ios, const basic_pipe<CharT, Traits> & p);
+    explicit async_pipe(boost::asio::io_context & ios, const basic_pipe<CharT, Traits> & p);
 
-    /** Construct the async-pipe from a pipe, with two different io_service objects.
+    /** Construct the async-pipe from a pipe, with two different io_context objects.
      * @note Windows requires a named pipe for this, if a the wrong type is used an exception is thrown.
      *
      */
     template<class CharT, class Traits = std::char_traits<CharT>>
-    explicit async_pipe(boost::asio::io_service & ios_source,
-                        boost::asio::io_service & ios_sink,
+    explicit async_pipe(boost::asio::io_context & ios_source,
+                        boost::asio::io_context & ios_sink,
                         const basic_pipe<CharT, Traits> & p);
 
 
@@ -160,26 +162,22 @@ public:
     native_handle native_sink  () const {return const_cast<boost::asio::windows::stream_handle&>(_sink  ).native();}
 
     /** Start an asynchronous read.
-
-     * See the boost.asio documentation for more details.
+     *
+     * See the [boost.asio documentation](http://www.boost.org/doc/libs/1_60_0/doc/html/boost_asio/reference/AsyncReadStream.html) for more details.
      */
     template<typename MutableBufferSequence,
              typename ReadHandler>
-    BOOST_ASIO_INITFN_RESULT_TYPE(
-          ReadHandler, void(boost::system::error_code, std::size_t))
-      async_read_some(
+    detail::dummy async_read_some(
         const MutableBufferSequence & buffers,
               ReadHandler &&handler);
 
     /** Start an asynchronous write.
 
-     * See the boost.asio documentation for more details.
+     * See the [boost.asio documentation](http://www.boost.org/doc/libs/1_60_0/doc/html/boost_asio/reference/AsyncWriteStream.html) for more details.
      */
     template<typename ConstBufferSequence,
              typename WriteHandler>
-    BOOST_ASIO_INITFN_RESULT_TYPE(
-              WriteHandler, void(boost::system::error_code, std::size_t))
-      async_write_some(
+    detail::dummy async_write_some(
         const ConstBufferSequence & buffers,
         WriteHandler && handler);
 
@@ -193,15 +191,15 @@ public:
     ///Get the asio handle of the pipe source. Qualified as rvalue
     handle_type && source() &&;
 
-    /// Move the source out of this class and change the io_service. Qualified as rvalue. \attention Will always move.
-    handle_type source(::boost::asio::io_service& ios) &&;
-    /// Move the sink out of this class and change the io_service. Qualified as rvalue. \attention Will always move
-    handle_type sink  (::boost::asio::io_service& ios) &&;
+    /// Move the source out of this class and change the io_context. Qualified as rvalue. \attention Will always move.
+    handle_type source(::boost::asio::io_context& ios) &&;
+    /// Move the sink out of this class and change the io_context. Qualified as rvalue. \attention Will always move
+    handle_type sink  (::boost::asio::io_context& ios) &&;
 
-    /// Copy the source out of this class and change the io_service. \attention Will always copy.
-    handle_type source(::boost::asio::io_service& ios) const &;
-    /// Copy the sink out of this class and change the io_service. \attention Will always copy
-    handle_type sink  (::boost::asio::io_service& ios) const &;
+    /// Copy the source out of this class and change the io_context. \attention Will always copy.
+    handle_type source(::boost::asio::io_context& ios) const &;
+    /// Copy the sink out of this class and change the io_context. \attention Will always copy
+    handle_type sink  (::boost::asio::io_context& ios) const &;
 
 
 

include/boost/process/async_system.hpp

@@ -0,0 +1,151 @@
+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+/**
+ * \file boost/process/async_system.hpp
+ *
+ * Defines the asynchronous version of the system function.
+ */
+
+#ifndef BOOST_PROCESS_ASYNC_SYSTEM_HPP
+#define BOOST_PROCESS_ASYNC_SYSTEM_HPP
+
+#include <boost/process/detail/config.hpp>
+#include <boost/process/async.hpp>
+#include <boost/process/child.hpp>
+#include <boost/process/detail/async_handler.hpp>
+#include <boost/process/detail/execute_impl.hpp>
+#include <type_traits>
+#include <memory>
+#include <boost/asio/async_result.hpp>
+#include <boost/asio/post.hpp>
+#include <boost/system/error_code.hpp>
+#include <tuple>
+
+#if defined(BOOST_POSIX_API)
+#include <boost/process/posix.hpp>
+#endif
+
+namespace boost {
+namespace process {
+namespace detail
+{
+
+template<typename Handler>
+struct async_system_handler : ::boost::process::detail::api::async_handler
+{
+    boost::asio::io_context & ios;
+    Handler handler;
+
+#if defined(BOOST_POSIX_API)
+    bool errored = false;
+#endif
+
+    template<typename ExitHandler_>
+    async_system_handler(
+            boost::asio::io_context & ios,
+            ExitHandler_ && exit_handler) : ios(ios), handler(std::forward<ExitHandler_>(exit_handler))
+    {
+    }
+
+
+    template<typename Exec>
+    void on_error(Exec&, const std::error_code & ec)
+    {
+#if defined(BOOST_POSIX_API)
+        errored = true;
+#endif
+        auto h = std::make_shared<Handler>(std::move(handler));
+        boost::asio::post(
+            ios.get_executor(),
+            [h, ec]() mutable
+            {
+                (*h)(boost::system::error_code(ec.value(), boost::system::system_category()), -1);
+            });
+    }
+
+    template<typename Executor>
+    std::function<void(int, const std::error_code&)> on_exit_handler(Executor&)
+    {
+#if defined(BOOST_POSIX_API)
+        if (errored)
+            return [](int , const std::error_code &){};
+#endif
+        auto h = std::make_shared<Handler>(std::move(handler));
+        return [h](int exit_code, const std::error_code & ec) mutable
+               {
+                    (*h)(boost::system::error_code(ec.value(), boost::system::system_category()), exit_code);
+               };
+    }
+};
+
+
+template<typename ExitHandler>
+struct is_error_handler<async_system_handler<ExitHandler>>    : std::true_type {};
+
+}
+
+/** This function provides an asynchronous interface to process launching.
+
+It uses the same properties and parameters as the other launching function,
+but is similar to the asynchronous functions in [boost.asio](http://www.boost.org/doc/libs/release/doc/html/boost_asio.html)
+
+It uses [asio::async_result](http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference/async_result.html) to determine
+the return value (from the second parameter, `exit_handler`).
+
+\param ios A reference to an [io_context](http://www.boost.org/doc/libs/release/doc/html/boost_asio/reference.html)
+\param exit_handler The exit-handler for the signature `void(boost::system::error_code, int)`
+
+\note This function does not allow custom error handling, since those are done through the `exit_handler`.
+
+*/
+#if defined(BOOST_PROCESS_DOXYGEN)
+template<typename ExitHandler, typename ...Args>
+inline boost::process::detail::dummy
+    async_system(boost::asio::io_context & ios, ExitHandler && exit_handler, Args && ...args);
+#endif
+
+namespace detail
+{
+struct async_system_init_op
+{
+
+    template<typename Handler, typename ... Args>
+    void operator()(Handler && handler, asio::io_context & ios, Args && ... args)
+    {
+        detail::async_system_handler<typename std::decay<Handler>::type> async_h{ios, std::forward<Handler>(handler)};
+        child(ios, std::forward<Args>(args)..., async_h ).detach();
+    }
+};
+
+
+}
+
+
+template<typename ExitHandler, typename ...Args>
+inline BOOST_ASIO_INITFN_RESULT_TYPE(ExitHandler, void (boost::system::error_code, int))
+    async_system(boost::asio::io_context & ios, ExitHandler && exit_handler, Args && ...args)
+{
+    
+    typedef typename ::boost::process::detail::has_error_handler<boost::fusion::tuple<Args...>>::type
+            has_err_handling;
+
+    static_assert(!has_err_handling::value, "async_system cannot have custom error handling");
+
+    return boost::asio::async_initiate<ExitHandler, void (boost::system::error_code, int)>(
+        detail::async_system_init_op{}, exit_handler, ios, std::forward<Args>(args)...
+    );
+}
+
+
+
+}}
+#endif
+

include/boost/process/child.hpp

@@ -35,6 +35,9 @@ child::child(Args&&...args)
     : child(::boost::process::detail::execute_impl(std::forward<Args>(args)...)) {}
 
 
+///Typedef for the type of an pid_t
+typedef ::boost::process::detail::api::pid_t pid_t;
+
 #if defined(BOOST_PROCESS_DOXYGEN)
 /** The main class to hold a child process. It is simliar to [std::thread](http://en.cppreference.com/w/cpp/thread/thread),
  * in that it has a join and detach function.
@@ -89,6 +92,10 @@ class child
     /** Get the Process Identifier. */
     pid_t id()      const;
 
+    /** Get the native, uninterpreted exit code. The return value is without any meaning if the child wasn't waited
+     *  for or if it was terminated. */
+    int native_exit_code() const;
+
     /** Check if the child process is running. */
     bool running();
     /** \overload void running() */
@@ -99,13 +106,16 @@ class child
     /** \overload void wait() */
     void wait(std::error_code & ec) noexcept;
 
-    /** Wait for the child process to exit for a period of time. */
+    /** Wait for the child process to exit for a period of time.
+     * \return True if child exited while waiting.
+     */
     template< class Rep, class Period >
     bool wait_for  (const std::chrono::duration<Rep, Period>& rel_time);
     /** \overload bool wait_for(const std::chrono::duration<Rep, Period>& rel_time) */
     bool wait_for  (const std::chrono::duration<Rep, Period>& rel_time, std::error_code & ec) noexcept;
 
-    /** Wait for the child process to exit until a point in time. */
+    /** Wait for the child process to exit until a point in time.
+      * \return True if child exited while waiting.*/
     template< class Clock, class Duration >
     bool wait_until(const std::chrono::time_point<Clock, Duration>& timeout_time );
     /** \overload bool wait_until(const std::chrono::time_point<Clock, Duration>& timeout_time )*/

include/boost/process/cmd.hpp

@@ -1,122 +1,122 @@
-// Copyright (c) 2006, 2007 Julio M. Merino Vidal
-// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
-// Copyright (c) 2009 Boris Schaeling
-// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
-// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_DETAIL_CMD_LINE_HPP
-#define BOOST_PROCESS_DETAIL_CMD_LINE_HPP
-
-#include <boost/detail/winapi/config.hpp>
-#include <boost/process/detail/config.hpp>
-#include <boost/process/detail/handler_base.hpp>
-#include <boost/process/detail/traits/cmd_or_exe.hpp>
-#include <boost/process/detail/traits/wchar_t.hpp>
-
-#if defined(BOOST_POSIX_API)
-#include <boost/process/detail/posix/cmd.hpp>
-#elif defined(BOOST_WINDOWS_API)
-#include <boost/process/detail/windows/cmd.hpp>
-#endif
-
-/** \file boost/process/cmd.hpp
- *
- *    This header provides the \xmlonly <globalname alt="boost::process::cmd">cmd</globalname>\endxmlonly property.
- *
-\xmlonly
-<programlisting>
-namespace boost {
-  namespace process {
-    <emphasis>unspecified</emphasis> <globalname alt="boost::process::cmd">cmd</globalname>;
-  }
-}
-</programlisting>
-\endxmlonly
-*/
-
-namespace boost { namespace process { namespace detail {
-
-
-struct cmd_
-{
-    constexpr cmd_() {}
-
-    template<typename Char>
-    inline api::cmd_setter_<Char> operator()(const Char *s) const
-    {
-        return api::cmd_setter_<Char>(s);
-    }
-    template<typename Char>
-    inline api::cmd_setter_<Char> operator= (const Char *s) const
-    {
-        return api::cmd_setter_<Char>(s);
-    }
-
-    template<typename Char>
-    inline api::cmd_setter_<Char> operator()(const std::basic_string<Char> &s) const
-    {
-        return api::cmd_setter_<Char>(s);
-    }
-    template<typename Char>
-    inline api::cmd_setter_<Char> operator= (const std::basic_string<Char> &s) const
-    {
-        return api::cmd_setter_<Char>(s);
-    }
-};
-
-template<> struct is_wchar_t<api::cmd_setter_<wchar_t>> : std::true_type {};
-
-
-
-template<>
-struct char_converter<char, api::cmd_setter_<wchar_t>>
-{
-    static api::cmd_setter_<char> conv(const api::cmd_setter_<wchar_t> & in)
-    {
-        return { ::boost::process::detail::convert(in.str()) };
-    }
-};
-
-template<>
-struct char_converter<wchar_t, api::cmd_setter_<char>>
-{
-    static api::cmd_setter_<wchar_t> conv(const api::cmd_setter_<char> & in)
-    {
-        return { ::boost::process::detail::convert(in.str()) };
-    }
-};
-
-
-
-
-
-
-}
-
-
-/** The cmd property allows to explicitly set commands for the execution.
-
-The overload form applies when only one string is passed to a launching function.
-The string will be internally parsed and split at spaces.
-
-The following expressions are valid, with `value` being either a C-String or
-a `std::basic_string` with `char` or `wchar_t`.
-
-\code{.cpp}
-cmd="value";
-cmd(value);
-\endcode
-
-The property can only be used for assignments.
-
-
- */
-constexpr static ::boost::process::detail::cmd_ cmd;
-
-}}
-
-#endif
+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_DETAIL_CMD_LINE_HPP
+#define BOOST_PROCESS_DETAIL_CMD_LINE_HPP
+
+#include <boost/winapi/config.hpp>
+#include <boost/process/detail/config.hpp>
+#include <boost/process/detail/handler_base.hpp>
+#include <boost/process/detail/traits/cmd_or_exe.hpp>
+#include <boost/process/detail/traits/wchar_t.hpp>
+
+#if defined(BOOST_POSIX_API)
+#include <boost/process/detail/posix/cmd.hpp>
+#elif defined(BOOST_WINDOWS_API)
+#include <boost/process/detail/windows/cmd.hpp>
+#endif
+
+/** \file boost/process/cmd.hpp
+ *
+ *    This header provides the \xmlonly <globalname alt="boost::process::cmd">cmd</globalname>\endxmlonly property.
+ *
+\xmlonly
+<programlisting>
+namespace boost {
+  namespace process {
+    <emphasis>unspecified</emphasis> <globalname alt="boost::process::cmd">cmd</globalname>;
+  }
+}
+</programlisting>
+\endxmlonly
+*/
+
+namespace boost { namespace process { namespace detail {
+
+
+struct cmd_
+{
+    constexpr cmd_() = default;
+
+    template<typename Char>
+    inline api::cmd_setter_<Char> operator()(const Char *s) const
+    {
+        return api::cmd_setter_<Char>(s);
+    }
+    template<typename Char>
+    inline api::cmd_setter_<Char> operator= (const Char *s) const
+    {
+        return api::cmd_setter_<Char>(s);
+    }
+
+    template<typename Char>
+    inline api::cmd_setter_<Char> operator()(const std::basic_string<Char> &s) const
+    {
+        return api::cmd_setter_<Char>(s);
+    }
+    template<typename Char>
+    inline api::cmd_setter_<Char> operator= (const std::basic_string<Char> &s) const
+    {
+        return api::cmd_setter_<Char>(s);
+    }
+};
+
+template<> struct is_wchar_t<api::cmd_setter_<wchar_t>> : std::true_type {};
+
+
+
+template<>
+struct char_converter<char, api::cmd_setter_<wchar_t>>
+{
+    static api::cmd_setter_<char> conv(const api::cmd_setter_<wchar_t> & in)
+    {
+        return { ::boost::process::detail::convert(in.str()) };
+    }
+};
+
+template<>
+struct char_converter<wchar_t, api::cmd_setter_<char>>
+{
+    static api::cmd_setter_<wchar_t> conv(const api::cmd_setter_<char> & in)
+    {
+        return { ::boost::process::detail::convert(in.str()) };
+    }
+};
+
+
+
+
+
+
+}
+
+
+/** The cmd property allows to explicitly set commands for the execution.
+
+The overload form applies when only one string is passed to a launching function.
+The string will be internally parsed and split at spaces.
+
+The following expressions are valid, with `value` being either a C-String or
+a `std::basic_string` with `char` or `wchar_t`.
+
+\code{.cpp}
+cmd="value";
+cmd(value);
+\endcode
+
+The property can only be used for assignments.
+
+
+ */
+constexpr static ::boost::process::detail::cmd_ cmd;
+
+}}
+
+#endif

include/boost/process/detail/async_handler.hpp

@@ -27,37 +27,37 @@ namespace detail {
 
 #if defined(BOOST_POSIX_API)
 using ::boost::process::detail::posix::is_async_handler;
-using ::boost::process::detail::posix::does_require_io_service;
+using ::boost::process::detail::posix::does_require_io_context;
 #else
 using ::boost::process::detail::windows::is_async_handler;
-using ::boost::process::detail::windows::does_require_io_service;
+using ::boost::process::detail::windows::does_require_io_context;
 #endif
 
 template<typename ...Args>
-struct has_io_service;
+struct has_io_context;
 
 template<typename T, typename ...Args>
-struct has_io_service<T, Args...>
+struct has_io_context<T, Args...>
 {
-    typedef typename has_io_service<Args...>::type next;
+    typedef typename has_io_context<Args...>::type next;
     typedef typename std::is_same<
                 typename std::remove_reference<T>::type,
-                boost::asio::io_service>::type is_ios;
+                boost::asio::io_context>::type is_ios;
     typedef typename std::conditional<is_ios::value,
             std::true_type,
             next>::type type;
 };
 
 template<typename T>
-struct has_io_service<T>
+struct has_io_context<T>
 {
     typedef typename std::is_same<
             typename std::remove_reference<T>::type,
-            boost::asio::io_service>::type type;
+            boost::asio::io_context>::type type;
 };
 
 template<typename ...Args>
-using has_io_service_t = typename has_io_service<Args...>::type;
+using has_io_context_t = typename has_io_context<Args...>::type;
 
 template<typename ...Args>
 struct has_async_handler;
@@ -79,69 +79,34 @@ struct has_async_handler<T>
 };
 
 template<typename ...Args>
-struct needs_io_service;
+struct needs_io_context;
 
 template<typename T, typename ...Args>
-struct needs_io_service<T, Args...>
+struct needs_io_context<T, Args...>
 {
-    typedef typename needs_io_service<Args...>::type next;
-    typedef typename does_require_io_service<T>::type is_ios;
+    typedef typename needs_io_context<Args...>::type next;
+    typedef typename does_require_io_context<T>::type is_ios;
     typedef typename std::conditional<is_ios::value,
             std::true_type,
             next>::type type;
 };
 
 template<typename T>
-struct needs_io_service<T>
+struct needs_io_context<T>
 {
-    typedef typename does_require_io_service<T>::type type;
-};
-
-
-template<typename T>
-struct is_yield_context
-{
-    typedef std::false_type type;
-};
-
-template<typename T>
-struct is_yield_context<::boost::asio::basic_yield_context<T>>
-{
-    typedef std::true_type type;
+    typedef typename does_require_io_context<T>::type type;
 };
 
 template<typename ...Args>
-struct has_yield_context;
-
-template<typename T, typename ...Args>
-struct has_yield_context<T, Args...>
-{
-    typedef typename has_yield_context<Args...>::type next;
-    typedef typename is_yield_context<
-            typename std::remove_reference<T>::type>::type is_ios;
-    typedef typename std::conditional<is_ios::value,
-            std::true_type,
-            next>::type type;
-};
-
-template<typename T>
-struct has_yield_context<T>
-{
-    typedef typename is_yield_context<
-            typename std::remove_reference<T>::type>::type type;
-};
-
-
-template<typename ...Args>
-boost::asio::io_service &get_io_service_var(boost::asio::io_service & f, Args&...args)
+boost::asio::io_context &get_io_context_var(boost::asio::io_context & f, Args&...)
 {
     return f;
 }
 
 template<typename First, typename ...Args>
-boost::asio::io_service &get_io_service_var(First & f, Args&...args)
+boost::asio::io_context &get_io_context_var(First&, Args&...args)
 {
-    return get_io_service_var(args...);
+    return get_io_context_var(args...);
 }
 
 }

include/boost/process/detail/basic_cmd.hpp

@@ -1,292 +1,292 @@
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-
-#ifndef BOOST_PROCESS_DETAIL_BASIC_CMD_HPP_
-#define BOOST_PROCESS_DETAIL_BASIC_CMD_HPP_
-
-#include <boost/process/detail/config.hpp>
-
-#include <boost/process/detail/handler_base.hpp>
-#include <boost/process/detail/traits/cmd_or_exe.hpp>
-#include <boost/process/detail/traits/wchar_t.hpp>
-
-#if defined( BOOST_WINDOWS_API )
-#include <boost/process/detail/windows/basic_cmd.hpp>
-#include <boost/process/detail/windows/cmd.hpp>
-#elif defined( BOOST_POSIX_API )
-#include <boost/process/detail/posix/basic_cmd.hpp>
-#include <boost/process/detail/posix/cmd.hpp>
-#endif
-
-#include <boost/process/shell.hpp>
-
-#include <iterator>
-
-
-namespace boost { namespace process { namespace detail {
-
-template<typename Char>
-struct exe_setter_
-{
-    typedef Char value_type;
-    typedef std::basic_string<Char> string_type;
-
-    string_type exe_;
-    exe_setter_(string_type && str)      : exe_(std::move(str)) {}
-    exe_setter_(const string_type & str) : exe_(str) {}
-};
-
-template<> struct is_wchar_t<exe_setter_<wchar_t>> : std::true_type {};
-
-
-template<>
-struct char_converter<char, exe_setter_<wchar_t>>
-{
-    static exe_setter_<char> conv(const exe_setter_<wchar_t> & in)
-    {
-        return {::boost::process::detail::convert(in.exe_)};
-    }
-};
-
-template<>
-struct char_converter<wchar_t, exe_setter_<char>>
-{
-    static exe_setter_<wchar_t> conv(const exe_setter_<char> & in)
-    {
-        return {::boost::process::detail::convert(in.exe_)};
-    }
-};
-
-
-
-template <typename Char, bool Append >
-struct arg_setter_
-{
-    using value_type = Char;
-    using string_type = std::basic_string<value_type>;
-    std::vector<string_type> _args;
-
-    typedef typename std::vector<string_type>::iterator       iterator;
-    typedef typename std::vector<string_type>::const_iterator const_iterator;
-
-    template<typename Iterator>
-    arg_setter_(Iterator && begin, Iterator && end) : _args(begin, end) {}
-
-    template<typename Range>
-    arg_setter_(Range && str) :
-            _args(std::begin(str),
-                  std::end(str)) {}
-
-    iterator begin() {return _args.begin();}
-    iterator end()   {return _args.end();}
-    const_iterator begin() const {return _args.begin();}
-    const_iterator end()   const {return _args.end();}
-    arg_setter_(string_type & str)     : _args{{str}} {}
-    arg_setter_(string_type && s)      : _args({std::move(s)}) {}
-    arg_setter_(const string_type & s) : _args({s}) {}
-    arg_setter_(const value_type* s)   : _args({std::move(s)}) {}
-
-    template<std::size_t Size>
-    arg_setter_(const value_type (&s) [Size]) : _args({s}) {}
-};
-
-template<> struct is_wchar_t<arg_setter_<wchar_t, true >> : std::true_type {};
-template<> struct is_wchar_t<arg_setter_<wchar_t, false>> : std::true_type {};
-
-template<>
-struct char_converter<char, arg_setter_<wchar_t, true>>
-{
-    static arg_setter_<char, true> conv(const arg_setter_<wchar_t, true> & in)
-    {
-        std::vector<std::string> vec(in._args.size());
-        std::transform(in._args.begin(), in._args.end(), vec.begin(),
-                [](const std::wstring & ws)
-                {
-                    return ::boost::process::detail::convert(ws);
-                });
-        return {vec};
-    }
-};
-
-template<>
-struct char_converter<wchar_t, arg_setter_<char, true>>
-{
-    static arg_setter_<wchar_t, true> conv(const arg_setter_<char, true> & in)
-    {
-        std::vector<std::wstring> vec(in._args.size());
-        std::transform(in._args.begin(), in._args.end(), vec.begin(),
-                [](const std::string & ws)
-                {
-                    return ::boost::process::detail::convert(ws);
-                });
-
-        return {vec};
-    }
-};
-
-template<>
-struct char_converter<char, arg_setter_<wchar_t, false>>
-{
-    static arg_setter_<char, false> conv(const arg_setter_<wchar_t, false> & in)
-    {
-        std::vector<std::string> vec(in._args.size());
-        std::transform(in._args.begin(), in._args.end(), vec.begin(),
-                [](const std::wstring & ws)
-                {
-                    return ::boost::process::detail::convert(ws);
-                });
-        return {vec};    }
-};
-
-template<>
-struct char_converter<wchar_t, arg_setter_<char, false>>
-{
-    static arg_setter_<wchar_t, false> conv2(const arg_setter_<char, false> & in)
-    {
-        std::vector<std::wstring> vec(in._args.size());
-        std::transform(in._args.begin(), in._args.end(), vec.begin(),
-                [](const std::string & ws)
-                {
-                    return ::boost::process::detail::convert(ws);
-                });
-        return {vec};
-    }
-};
-
-using api::exe_cmd_init;
-
-template<typename Char>
-struct exe_builder
-{
-    //set by path, because that will not be interpreted as a cmd
-    bool not_cmd = false;
-    bool shell   = false;
-    using string_type = std::basic_string<Char>;
-    string_type exe;
-    std::vector<string_type> args;
-
-    void operator()(const boost::filesystem::path & data)
-    {
-        not_cmd = true;
-        if (exe.empty())
-            exe = data.native();
-        else
-            args.push_back(data.native());
-    }
-
-    void operator()(const string_type & data)
-    {
-        if (exe.empty())
-            exe = data;
-        else
-            args.push_back(data);
-    }
-    void operator()(const Char* data)
-    {
-        if (exe.empty())
-            exe = data;
-        else
-            args.push_back(data);
-    }
-    void operator()(shell_) {shell = true;}
-    void operator()(std::vector<string_type> && data)
-    {
-        if (data.empty())
-            return;
-
-        auto itr = std::make_move_iterator(data.begin());
-        auto end = std::make_move_iterator(data.end());
-
-        if (exe.empty())
-        {
-            exe = *itr;
-            itr++;
-        }
-        args.insert(args.end(), itr, end);
-    }
-
-    void operator()(const std::vector<string_type> & data)
-    {
-        if (data.empty())
-            return;
-
-        auto itr = data.begin();
-        auto end = data.end();
-
-        if (exe.empty())
-        {
-            exe = *itr;
-            itr++;
-        }
-        args.insert(args.end(), itr, end);
-    }
-    void operator()(exe_setter_<Char> && data)
-    {
-        not_cmd = true;
-        exe = std::move(data.exe_);
-    }
-    void operator()(const exe_setter_<Char> & data)
-    {
-        not_cmd = true;
-        exe = data.exe_;
-    }
-    void operator()(arg_setter_<Char, false> && data)
-    {
-        args.assign(
-                std::make_move_iterator(data._args.begin()),
-                std::make_move_iterator(data._args.end()));
-    }
-    void operator()(arg_setter_<Char, true> && data)
-    {
-        args.insert(args.end(),
-                std::make_move_iterator(data._args.begin()),
-                std::make_move_iterator(data._args.end()));
-    }
-    void operator()(const arg_setter_<Char, false> & data)
-    {
-        args.assign(data._args.begin(), data._args.end());
-    }
-    void operator()(const arg_setter_<Char, true> & data)
-    {
-        args.insert(args.end(), data._args.begin(), data._args.end());
-    }
-
-    api::exe_cmd_init<Char> get_initializer()
-    {
-        if (not_cmd || !args.empty())
-        {
-            if (shell)
-                return api::exe_cmd_init<Char>::exe_args_shell(std::move(exe), std::move(args));
-            else
-                return api::exe_cmd_init<Char>::exe_args(std::move(exe), std::move(args));
-        }
-        else
-            if (shell)
-                return api::exe_cmd_init<Char>::cmd_shell(std::move(exe));
-            else
-                return api::exe_cmd_init<Char>::cmd(std::move(exe));
-
-    }
-    typedef api::exe_cmd_init<Char> result_type;
-};
-
-template<>
-struct initializer_builder<cmd_or_exe_tag<char>>
-{
-    typedef exe_builder<char> type;
-};
-
-template<>
-struct initializer_builder<cmd_or_exe_tag<wchar_t>>
-{
-    typedef exe_builder<wchar_t> type;
-};
-
-}}}
-
-
-
-#endif /* INCLUDE_BOOST_PROCESS_DETAIL_EXE_BUILDER_HPP_ */
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+#ifndef BOOST_PROCESS_DETAIL_BASIC_CMD_HPP_
+#define BOOST_PROCESS_DETAIL_BASIC_CMD_HPP_
+
+#include <boost/process/detail/config.hpp>
+
+#include <boost/process/detail/handler_base.hpp>
+#include <boost/process/detail/traits/cmd_or_exe.hpp>
+#include <boost/process/detail/traits/wchar_t.hpp>
+
+#if defined( BOOST_WINDOWS_API )
+#include <boost/process/detail/windows/basic_cmd.hpp>
+#include <boost/process/detail/windows/cmd.hpp>
+#elif defined( BOOST_POSIX_API )
+#include <boost/process/detail/posix/basic_cmd.hpp>
+#include <boost/process/detail/posix/cmd.hpp>
+#endif
+
+#include <boost/process/shell.hpp>
+
+#include <iterator>
+
+
+namespace boost { namespace process { namespace detail {
+
+template<typename Char>
+struct exe_setter_
+{
+    typedef Char value_type;
+    typedef std::basic_string<Char> string_type;
+
+    string_type exe_;
+    exe_setter_(string_type && str)      : exe_(std::move(str)) {}
+    exe_setter_(const string_type & str) : exe_(str) {}
+};
+
+template<> struct is_wchar_t<exe_setter_<wchar_t>> : std::true_type {};
+
+
+template<>
+struct char_converter<char, exe_setter_<wchar_t>>
+{
+    static exe_setter_<char> conv(const exe_setter_<wchar_t> & in)
+    {
+        return {::boost::process::detail::convert(in.exe_)};
+    }
+};
+
+template<>
+struct char_converter<wchar_t, exe_setter_<char>>
+{
+    static exe_setter_<wchar_t> conv(const exe_setter_<char> & in)
+    {
+        return {::boost::process::detail::convert(in.exe_)};
+    }
+};
+
+
+
+template <typename Char, bool Append >
+struct arg_setter_
+{
+    using value_type = Char;
+    using string_type = std::basic_string<value_type>;
+    std::vector<string_type> _args;
+
+    typedef typename std::vector<string_type>::iterator       iterator;
+    typedef typename std::vector<string_type>::const_iterator const_iterator;
+
+    template<typename Iterator>
+    arg_setter_(Iterator && begin, Iterator && end) : _args(begin, end) {}
+
+    template<typename Range>
+    arg_setter_(Range && str) :
+            _args(std::begin(str),
+                  std::end(str)) {}
+
+    iterator begin() {return _args.begin();}
+    iterator end()   {return _args.end();}
+    const_iterator begin() const {return _args.begin();}
+    const_iterator end()   const {return _args.end();}
+    arg_setter_(string_type & str)     : _args{{str}} {}
+    arg_setter_(string_type && s)      : _args({std::move(s)}) {}
+    arg_setter_(const string_type & s) : _args({s}) {}
+    arg_setter_(const value_type* s)   : _args({std::move(s)}) {}
+
+    template<std::size_t Size>
+    arg_setter_(const value_type (&s) [Size]) : _args({s}) {}
+};
+
+template<> struct is_wchar_t<arg_setter_<wchar_t, true >> : std::true_type {};
+template<> struct is_wchar_t<arg_setter_<wchar_t, false>> : std::true_type {};
+
+template<>
+struct char_converter<char, arg_setter_<wchar_t, true>>
+{
+    static arg_setter_<char, true> conv(const arg_setter_<wchar_t, true> & in)
+    {
+        std::vector<std::string> vec(in._args.size());
+        std::transform(in._args.begin(), in._args.end(), vec.begin(),
+                [](const std::wstring & ws)
+                {
+                    return ::boost::process::detail::convert(ws);
+                });
+        return {vec};
+    }
+};
+
+template<>
+struct char_converter<wchar_t, arg_setter_<char, true>>
+{
+    static arg_setter_<wchar_t, true> conv(const arg_setter_<char, true> & in)
+    {
+        std::vector<std::wstring> vec(in._args.size());
+        std::transform(in._args.begin(), in._args.end(), vec.begin(),
+                [](const std::string & ws)
+                {
+                    return ::boost::process::detail::convert(ws);
+                });
+
+        return {vec};
+    }
+};
+
+template<>
+struct char_converter<char, arg_setter_<wchar_t, false>>
+{
+    static arg_setter_<char, false> conv(const arg_setter_<wchar_t, false> & in)
+    {
+        std::vector<std::string> vec(in._args.size());
+        std::transform(in._args.begin(), in._args.end(), vec.begin(),
+                [](const std::wstring & ws)
+                {
+                    return ::boost::process::detail::convert(ws);
+                });
+        return {vec};    }
+};
+
+template<>
+struct char_converter<wchar_t, arg_setter_<char, false>>
+{
+    static arg_setter_<wchar_t, false> conv(const arg_setter_<char, false> & in)
+    {
+        std::vector<std::wstring> vec(in._args.size());
+        std::transform(in._args.begin(), in._args.end(), vec.begin(),
+                [](const std::string & ws)
+                {
+                    return ::boost::process::detail::convert(ws);
+                });
+        return {vec};
+    }
+};
+
+using api::exe_cmd_init;
+
+template<typename Char>
+struct exe_builder
+{
+    //set by path, because that will not be interpreted as a cmd
+    bool not_cmd = false;
+    bool shell   = false;
+    using string_type = std::basic_string<Char>;
+    string_type exe;
+    std::vector<string_type> args;
+
+    void operator()(const boost::process::filesystem::path & data)
+    {
+        not_cmd = true;
+        if (exe.empty())
+            exe = data.native();
+        else
+            args.push_back(data.native());
+    }
+
+    void operator()(const string_type & data)
+    {
+        if (exe.empty())
+            exe = data;
+        else
+            args.push_back(data);
+    }
+    void operator()(const Char* data)
+    {
+        if (exe.empty())
+            exe = data;
+        else
+            args.push_back(data);
+    }
+    void operator()(shell_) {shell = true;}
+    void operator()(std::vector<string_type> && data)
+    {
+        if (data.empty())
+            return;
+
+        auto itr = std::make_move_iterator(data.begin());
+        auto end = std::make_move_iterator(data.end());
+
+        if (exe.empty())
+        {
+            exe = *itr;
+            itr++;
+        }
+        args.insert(args.end(), itr, end);
+    }
+
+    void operator()(const std::vector<string_type> & data)
+    {
+        if (data.empty())
+            return;
+
+        auto itr = data.begin();
+        auto end = data.end();
+
+        if (exe.empty())
+        {
+            exe = *itr;
+            itr++;
+        }
+        args.insert(args.end(), itr, end);
+    }
+    void operator()(exe_setter_<Char> && data)
+    {
+        not_cmd = true;
+        exe = std::move(data.exe_);
+    }
+    void operator()(const exe_setter_<Char> & data)
+    {
+        not_cmd = true;
+        exe = data.exe_;
+    }
+    void operator()(arg_setter_<Char, false> && data)
+    {
+        args.assign(
+                std::make_move_iterator(data._args.begin()),
+                std::make_move_iterator(data._args.end()));
+    }
+    void operator()(arg_setter_<Char, true> && data)
+    {
+        args.insert(args.end(),
+                std::make_move_iterator(data._args.begin()),
+                std::make_move_iterator(data._args.end()));
+    }
+    void operator()(const arg_setter_<Char, false> & data)
+    {
+        args.assign(data._args.begin(), data._args.end());
+    }
+    void operator()(const arg_setter_<Char, true> & data)
+    {
+        args.insert(args.end(), data._args.begin(), data._args.end());
+    }
+
+    api::exe_cmd_init<Char> get_initializer()
+    {
+        if (not_cmd || !args.empty())
+        {
+            if (shell)
+                return api::exe_cmd_init<Char>::exe_args_shell(std::move(exe), std::move(args));
+            else
+                return api::exe_cmd_init<Char>::exe_args(std::move(exe), std::move(args));
+        }
+        else
+            if (shell)
+                return api::exe_cmd_init<Char>::cmd_shell(std::move(exe));
+            else
+                return api::exe_cmd_init<Char>::cmd(std::move(exe));
+
+    }
+    typedef api::exe_cmd_init<Char> result_type;
+};
+
+template<>
+struct initializer_builder<cmd_or_exe_tag<char>>
+{
+    typedef exe_builder<char> type;
+};
+
+template<>
+struct initializer_builder<cmd_or_exe_tag<wchar_t>>
+{
+    typedef exe_builder<wchar_t> type;
+};
+
+}}}
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_EXE_BUILDER_HPP_ */

include/boost/process/detail/child_decl.hpp

@@ -60,25 +60,27 @@ public:
     explicit child(child_handle &&ch, const std::shared_ptr<std::atomic<int>> &ptr) : _child_handle(std::move(ch)), _exit_status(ptr) {}
     explicit child(child_handle &&ch) : _child_handle(std::move(ch)) {}
 
-    explicit child(pid_t & pid) : _child_handle(pid), _attached(false) {};
+    explicit child(pid_t pid) : _child_handle(pid), _attached(false) {};
     child(const child&) = delete;
     child(child && lhs) noexcept
         : _child_handle(std::move(lhs._child_handle)),
           _exit_status(std::move(lhs._exit_status)),
-          _attached (lhs._attached)
+          _attached (lhs._attached),
+          _terminated (lhs._terminated)
     {
         lhs._attached = false;
     }
 
     template<typename ...Args>
     explicit child(Args&&...args);
-    child() {}
+    child() { } // Must be kept non defaulted for MSVC 14.1 & 14.2 #113
     child& operator=(const child&) = delete;
     child& operator=(child && lhs)
     {
         _child_handle= std::move(lhs._child_handle);
         _exit_status = std::move(lhs._exit_status);
         _attached    = lhs._attached;
+        _terminated  = lhs._terminated;
         lhs._attached = false;
         return *this;
     };
@@ -99,74 +101,62 @@ public:
     int exit_code() const {return ::boost::process::detail::api::eval_exit_status(_exit_status->load());}
     pid_t id()      const {return _child_handle.id(); }
 
+    int native_exit_code() const {return _exit_status->load();}
+
     bool running()
     {
-        if (valid() && !_exited())
-        {
-            int code; 
-            auto res = boost::process::detail::api::is_running(_child_handle, code);
-            if (!res && !_exited())
-                _exit_status->store(code);
-
-            return res;
-        }
-        return false;
+        std::error_code ec;
+        bool b = running(ec);
+        boost::process::detail::throw_error(ec, "running error");
+        return b;
     }
 
     void terminate()
     {
-        if (valid() && running())
-            boost::process::detail::api::terminate(_child_handle);
-
-        _terminated = true;
+        std::error_code ec;
+        terminate(ec);
+        boost::process::detail::throw_error(ec, "terminate error");
     }
 
     void wait()
     {
-        if (!_exited() && valid())
-        {
-            int exit_code = 0;
-            boost::process::detail::api::wait(_child_handle, exit_code);
-            _exit_status->store(exit_code);
-        }
+        std::error_code ec;
+        wait(ec);
+        boost::process::detail::throw_error(ec, "wait error");
     }
 
+#if !defined(BOOST_PROCESS_NO_DEPRECATED)
+
     template< class Rep, class Period >
-    bool wait_for  (const std::chrono::duration<Rep, Period>& rel_time)
+    BOOST_DEPRECATED("wait_for is unreliable")
+    bool wait_for (const std::chrono::duration<Rep, Period>& rel_time)
     {
-        if (!_exited())
-        {
-            int exit_code = 0;
-            auto b = boost::process::detail::api::wait_for(_child_handle, exit_code, rel_time);
-            if (!b)
-                return false;
-            _exit_status->store(exit_code);
-        }
-        return true;
+        std::error_code ec;
+        bool b = wait_for(rel_time, ec);
+        boost::process::detail::throw_error(ec, "wait_for error");
+        return b;
     }
 
     template< class Clock, class Duration >
+    BOOST_DEPRECATED("wait_until is unreliable")
     bool wait_until(const std::chrono::time_point<Clock, Duration>& timeout_time )
     {
-        if (!_exited())
-        {
-            int exit_code = 0;
-            auto b = boost::process::detail::api::wait_until(_child_handle, exit_code, timeout_time);
-            if (!b)
-                return false;
-            _exit_status->store(exit_code);
-        }
-        return true;
+        std::error_code ec;
+        bool b = wait_until(timeout_time, ec);
+        boost::process::detail::throw_error(ec, "wait_until error");
+        return b;
     }
+#endif
 
     bool running(std::error_code & ec) noexcept
     {
-        if (valid() && !_exited())
+        ec.clear();
+        if (valid() && !_exited() && !ec)
         {
-            int code;
-            auto res = boost::process::detail::api::is_running(_child_handle, code, ec);
-            if (!res && !_exited())
-                _exit_status->store(code);
+            int exit_code = 0;
+            auto res = boost::process::detail::api::is_running(_child_handle, exit_code, ec);
+            if (!ec && !res && !_exited())
+                _exit_status->store(exit_code);
 
             return res;
         }
@@ -175,10 +165,11 @@ public:
 
     void terminate(std::error_code & ec) noexcept
     {
-        if (valid() && running(ec))
+        if (valid() && running(ec) && !ec)
             boost::process::detail::api::terminate(_child_handle, ec);
 
-        _terminated = true;
+        if (!ec)
+            _terminated = true;
     }
 
     void wait(std::error_code & ec) noexcept
@@ -187,38 +178,34 @@ public:
         {
             int exit_code = 0;
             boost::process::detail::api::wait(_child_handle, exit_code, ec);
-            _exit_status->store(exit_code);
+            if (!ec)
+                _exit_status->store(exit_code);
         }
     }
 
+#if !defined(BOOST_PROCESS_NO_DEPRECATED)
     template< class Rep, class Period >
-    bool wait_for  (const std::chrono::duration<Rep, Period>& rel_time, std::error_code & ec) noexcept
+    BOOST_DEPRECATED("wait_for is unreliable")
+    bool wait_for (const std::chrono::duration<Rep, Period>& rel_time, std::error_code & ec) noexcept
     {
-        if (!_exited())
-        {
-            int exit_code = 0;
-            auto b = boost::process::detail::api::wait_for(_child_handle, exit_code, rel_time, ec);
-            if (!b)
-                return false;
-            _exit_status->store(exit_code);
-        }
-        return true;
+        return wait_until(std::chrono::steady_clock::now() + rel_time, ec);
     }
 
     template< class Clock, class Duration >
+    BOOST_DEPRECATED("wait_until is unreliable")
     bool wait_until(const std::chrono::time_point<Clock, Duration>& timeout_time, std::error_code & ec) noexcept
     {
         if (!_exited())
         {
             int exit_code = 0;
             auto b = boost::process::detail::api::wait_until(_child_handle, exit_code, timeout_time, ec);
-            if (!b)
+            if (!b || ec)
                 return false;
             _exit_status->store(exit_code);
         }
         return true;
     }
-
+#endif
 
     bool valid() const
     {

include/boost/process/detail/config.hpp

@@ -25,9 +25,13 @@
 
 #if defined(BOOST_POSIX_API)
 #include <errno.h>
+#if defined(__GLIBC__)
 #include <features.h>
+#else
+extern char **environ;
+#endif
 #elif defined(BOOST_WINDOWS_API)
-#include <boost/detail/winapi/get_last_error.hpp>
+#include <boost/winapi/get_last_error.hpp>
 #else
 #error "System API not supported by boost.process"
 #endif
@@ -49,17 +53,21 @@ inline std::error_code get_last_error() noexcept
 }
 
 //copied from linux spec.
-#if defined (__USE_XOPEN_EXTENDED) && !defined (__USE_XOPEN2K8) || defined( __USE_BSD)
+#if (_XOPEN_SOURCE >= 500 || _XOPEN_SOURCE && _XOPEN_SOURCE_EXTENDED) && !(_POSIX_C_SOURCE >= 200809L || _XOPEN_SOURCE >= 700)
 #define BOOST_POSIX_HAS_VFORK 1
 #endif
 
+#if (_POSIX_C_SOURCE >= 199309L)
+#define BOOST_POSIX_HAS_SIGTIMEDWAIT 1
+#endif
+
 #elif defined(BOOST_WINDOWS_API)
 namespace windows {namespace extensions {}}
 namespace api = windows;
 
 inline std::error_code get_last_error() noexcept
 {
-    return std::error_code(::boost::detail::winapi::GetLastError(), std::system_category());
+    return std::error_code(::boost::winapi::GetLastError(), std::system_category());
 }
 #endif
 
@@ -68,28 +76,46 @@ inline void throw_last_error(const std::string & msg)
     throw process_error(get_last_error(), msg);
 }
 
+inline void throw_last_error(const char * msg)
+{
+    throw process_error(get_last_error(), msg);
+}
+
 inline void throw_last_error()
 {
     throw process_error(get_last_error());
 }
 
+inline void throw_error(const std::error_code& ec)
+{
+    if (ec)
+        throw process_error(ec);
+}
 
-template<typename Char> constexpr static Char null_char();
+inline void throw_error(const std::error_code& ec, const char* msg)
+{
+    if (ec)
+        throw process_error(ec, msg);
+}
+
+template<typename Char> constexpr Char null_char();
 template<> constexpr char     null_char<char>     (){return   '\0';}
 template<> constexpr wchar_t  null_char<wchar_t>  (){return  L'\0';}
 
-template<typename Char> constexpr static Char equal_sign();
+template<typename Char> constexpr Char equal_sign();
 template<> constexpr char     equal_sign<char>    () {return  '='; }
 template<> constexpr wchar_t  equal_sign<wchar_t> () {return L'='; }
 
-template<typename Char> constexpr static Char quote_sign();
+template<typename Char> constexpr Char quote_sign();
 template<> constexpr char     quote_sign<char>    () {return  '"'; }
 template<> constexpr wchar_t  quote_sign<wchar_t> () {return L'"'; }
 
-template<typename Char> constexpr static Char space_sign();
+template<typename Char> constexpr Char space_sign();
 template<> constexpr char     space_sign<char>    () {return  ' '; }
 template<> constexpr wchar_t  space_sign<wchar_t> () {return L' '; }
 
+}
+}
+}
 
-}}}
 #endif

include/boost/process/detail/execute_impl.hpp

@@ -250,12 +250,12 @@ inline child basic_execute_impl(Args && ... args)
     //typedef typename boost::fusion::result_of::as_vector<decltype(inits)>::type  inits_t;
     typedef typename boost::fusion::result_of::as_vector<decltype(others)>::type others_t;
     //  typedef decltype(others) others_t;
-    typedef typename detail::make_builders_from_view<
+    typedef typename ::boost::process::detail::make_builders_from_view<
             typename boost::fusion::result_of::begin<others_t>::type,
             typename boost::fusion::result_of::end  <others_t>::type>::type builder_t;
 
     builder_t builders;
-    detail::builder_ref<builder_t> builder_ref(builders);
+    ::boost::process::detail::builder_ref<builder_t> builder_ref(builders);
 
     boost::fusion::for_each(others, builder_ref);
     auto other_inits = ::boost::process::detail::get_initializers(builders);

include/boost/process/detail/handler.hpp

@@ -1,78 +1,75 @@
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-
-#ifndef BOOST_PROCESS_DETAIL_HANDLER_HPP_
-#define BOOST_PROCESS_DETAIL_HANDLER_HPP_
-
-#include <boost/process/detail/config.hpp>
-
-#if defined(BOOST_POSIX_API)
-#include <boost/process/detail/posix/handler.hpp>
-#elif defined(BOOST_WINDOWS_API)
-#include <boost/process/detail/windows/handler.hpp>
-#endif
-
-
-namespace boost { namespace process { namespace detail {
-
-//extended handler base.
-typedef api::handler_base_ext handler;
-
-
-template <class Handler>
-struct on_setup_ : handler
-{
-    explicit on_setup_(Handler handler) : handler_(handler) {}
-
-    template <class Executor>
-    void on_setup(Executor &e)
-    {
-        handler_(e);
-    }
-private:
-    Handler handler_;
-};
-
-template <class Handler>
-struct on_error_ : handler
-{
-    explicit on_error_(Handler handler) : handler_(handler) {}
-
-    template <class Executor>
-    void on_error(Executor &e, const std::error_code &ec)
-    {
-        handler_(e, ec);
-    }
-private:
-    Handler handler_;
-};
-
-template <class Handler>
-struct on_success_ : handler
-{
-    explicit on_success_(Handler handler) : handler_(handler) {}
-
-    template <class Executor>
-    void on_success(Executor &e)
-    {
-        handler_(e);
-    }
-private:
-    Handler handler_;
-};
-
-}
-
-constexpr boost::process::detail::make_handler_t<boost::process::detail::on_setup_>   on_setup;
-constexpr boost::process::detail::make_handler_t<boost::process::detail::on_error_>   on_error;
-constexpr boost::process::detail::make_handler_t<boost::process::detail::on_success_> on_success;
-
-
-}}
-
-
-
-#endif /* BOOST_PROCESS_DETAIL_HANDLER_HPP_ */
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+#ifndef BOOST_PROCESS_DETAIL_HANDLER_HPP_
+#define BOOST_PROCESS_DETAIL_HANDLER_HPP_
+
+#include <boost/process/detail/config.hpp>
+
+#if defined(BOOST_POSIX_API)
+#include <boost/process/detail/posix/handler.hpp>
+#elif defined(BOOST_WINDOWS_API)
+#include <boost/process/detail/windows/handler.hpp>
+#endif
+
+
+namespace boost { namespace process { namespace detail {
+
+//extended handler base.
+typedef api::handler_base_ext handler;
+
+
+template <class Handler>
+struct on_setup_ : handler
+{
+    explicit on_setup_(Handler handler) : handler_(handler) {}
+
+    template <class Executor>
+    void on_setup(Executor &e)
+    {
+        handler_(e);
+    }
+private:
+    Handler handler_;
+};
+
+template <class Handler>
+struct on_error_ : handler
+{
+    explicit on_error_(Handler handler) : handler_(handler) {}
+
+    template <class Executor>
+    void on_error(Executor &e, const std::error_code &ec)
+    {
+        handler_(e, ec);
+    }
+private:
+    Handler handler_;
+};
+
+template <class Handler>
+struct on_success_ : handler
+{
+    explicit on_success_(Handler handler) : handler_(handler) {}
+
+    template <class Executor>
+    void on_success(Executor &e)
+    {
+        handler_(e);
+    }
+private:
+    Handler handler_;
+};
+
+}
+
+
+
+}}
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_HANDLER_HPP_ */

include/boost/process/detail/handler_base.hpp

@@ -18,6 +18,7 @@ namespace boost { namespace process { namespace detail {
 template<template <class> class Template>
 struct make_handler_t
 {
+    constexpr make_handler_t() {}
     template<typename Handler>
     constexpr Template<Handler> operator()(Handler handler) const {return Template<Handler>(handler);}
     template<typename Handler>

include/boost/process/detail/posix/asio_fwd.hpp

@@ -7,6 +7,7 @@
 #define BOOST_PROCESS_DETAIL_POSIX_ASIO_FWD_HPP_
 
 #include <memory>
+#include <boost/asio/ts/netfwd.hpp>
 
 namespace boost { namespace asio {
 
@@ -20,34 +21,19 @@ template<typename Allocator>
 class basic_streambuf;
 
 typedef basic_streambuf<std::allocator<char>> streambuf;
-class io_service;
-
-
-class signal_set_service;
-template <typename SignalSetService>
 
+template <typename Executor>
 class basic_signal_set;
-typedef basic_signal_set<signal_set_service> signal_set;
+typedef basic_signal_set<any_io_executor> signal_set;
 
 template <typename Handler>
 class basic_yield_context;
 
 namespace posix {
 
-class stream_descriptor_service;
-
-template <typename StreamDesscriptorService>
+template <typename Executor>
 class basic_stream_descriptor;
-typedef basic_stream_descriptor<stream_descriptor_service> stream_descriptor;
-
-
-
-class object_handle_service;
-
-template <typename ObjectHandleService>
-class basic_object_handle;
-
-typedef basic_object_handle<object_handle_service> object_handle;
+typedef basic_stream_descriptor<any_io_executor> stream_descriptor;
 
 } //posix
 } //asio

include/boost/process/detail/posix/async_handler.hpp

@@ -1,40 +1,40 @@
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-
-#ifndef BOOST_PROCESS_POSIX_ASYNC_HANDLER_HPP_
-#define BOOST_PROCESS_POSIX_ASYNC_HANDLER_HPP_
-
-#include <boost/process/detail/posix/handler.hpp>
-#include <type_traits>
-
-namespace boost { namespace process { namespace detail { namespace posix {
-
-struct require_io_service {};
-
-struct async_handler : handler_base_ext, require_io_service
-{
-};
-
-template<typename T>
-struct is_async_handler :  std::is_base_of<async_handler, T> {};
-template<typename T>
-struct is_async_handler<T&> :  std::is_base_of<async_handler, T> {};
-template<typename T>
-struct is_async_handler<const T&> :  std::is_base_of<async_handler, T> {};
-
-template<typename T>
-struct does_require_io_service : std::is_base_of<require_io_service, T> {};
-
-template<typename T>
-struct does_require_io_service<T&> : std::is_base_of<require_io_service, T> {};
-
-template<typename T>
-struct does_require_io_service<const T&> : std::is_base_of<require_io_service, T> {};
-
-
-}}}}
-
-#endif /* BOOST_PROCESS_WINDOWS_ASYNC_HANDLER_HPP_ */
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+#ifndef BOOST_PROCESS_POSIX_ASYNC_HANDLER_HPP_
+#define BOOST_PROCESS_POSIX_ASYNC_HANDLER_HPP_
+
+#include <boost/process/detail/posix/handler.hpp>
+#include <type_traits>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+struct require_io_context {};
+
+struct async_handler : handler_base_ext, require_io_context
+{
+};
+
+template<typename T>
+struct is_async_handler :  std::is_base_of<async_handler, T> {};
+template<typename T>
+struct is_async_handler<T&> :  std::is_base_of<async_handler, T> {};
+template<typename T>
+struct is_async_handler<const T&> :  std::is_base_of<async_handler, T> {};
+
+template<typename T>
+struct does_require_io_context : std::is_base_of<require_io_context, T> {};
+
+template<typename T>
+struct does_require_io_context<T&> : std::is_base_of<require_io_context, T> {};
+
+template<typename T>
+struct does_require_io_context<const T&> : std::is_base_of<require_io_context, T> {};
+
+
+}}}}
+
+#endif /* BOOST_PROCESS_WINDOWS_ASYNC_HANDLER_HPP_ */

include/boost/process/detail/posix/async_in.hpp

@@ -1,94 +1,111 @@
-// Copyright (c) 2006, 2007 Julio M. Merino Vidal
-// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
-// Copyright (c) 2009 Boris Schaeling
-// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
-// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_DETAIL_POSIX_ASYNC_IN_HPP
-#define BOOST_PROCESS_DETAIL_POSIX_ASYNC_IN_HPP
-
-#include <boost/process/detail/handler_base.hpp>
-#include <boost/process/detail/posix/async_handler.hpp>
-#include <boost/asio/write.hpp>
-#include <boost/process/async_pipe.hpp>
-#include <memory>
-#include <future>
-
-namespace boost { namespace process { namespace detail { namespace posix {
-
-
-template<typename Buffer>
-struct async_in_buffer : ::boost::process::detail::posix::handler_base_ext,
-                         ::boost::process::detail::posix::require_io_service
-{
-    Buffer & buf;
-
-    std::shared_ptr<std::promise<void>> promise;
-    async_in_buffer operator>(std::future<void> & fut)
-    {
-        promise = std::make_shared<std::promise<void>>();
-        fut = promise->get_future(); return std::move(*this);
-    }
-
-    std::shared_ptr<boost::process::async_pipe> pipe;
-
-    async_in_buffer(Buffer & buf) : buf(buf)
-    {
-    }
-    template <typename Executor>
-    inline void on_success(Executor &exec)
-    {
-        auto  pipe              = this->pipe;
-        if (this->promise)
-        {
-            auto promise = this->promise;
-
-            boost::asio::async_write(*pipe, buf,
-                [pipe, promise](const boost::system::error_code & ec, std::size_t)
-                {
-                    if (ec && (ec.value() != EBADF) && (ec.value() != EPERM) && (ec.value() != ENOENT))
-                    {
-                        std::error_code e(ec.value(), std::system_category());
-                        promise->set_exception(std::make_exception_ptr(process_error(e)));
-                    }
-                    else
-                        promise->set_value();
-                });
-        }
-        else
-            boost::asio::async_write(*pipe, buf,
-                [pipe](const boost::system::error_code&ec, std::size_t size){});
-
-        ::close(pipe->native_source());
-        this->pipe = nullptr;
-    }
-
-    template<typename Executor>
-    void on_error(Executor &, const std::error_code &) const
-    {
-        ::close(pipe->native_source());
-    }
-
-    template<typename Executor>
-    void on_setup(Executor & exec)
-    {
-        pipe = std::make_shared<boost::process::async_pipe>(get_io_service(exec.seq));
-    }
-
-    template <typename Executor>
-    void on_exec_setup(Executor &exec)
-    {
-        if (::dup2(pipe->native_source(), STDIN_FILENO) == -1)
-            exec.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-
-        ::close(pipe->native_source());
-    }
-};
-
-
-}}}}
-
-#endif
+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_DETAIL_POSIX_ASYNC_IN_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_ASYNC_IN_HPP
+
+#include <boost/process/detail/handler_base.hpp>
+#include <boost/process/detail/posix/async_handler.hpp>
+#include <boost/asio/write.hpp>
+#include <boost/process/async_pipe.hpp>
+#include <memory>
+#include <future>
+#include <boost/process/detail/used_handles.hpp>
+#include <array>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+
+template<typename Buffer>
+struct async_in_buffer : ::boost::process::detail::posix::handler_base_ext,
+                         ::boost::process::detail::posix::require_io_context,
+                         ::boost::process::detail::uses_handles
+{
+    Buffer & buf;
+
+    std::shared_ptr<std::promise<void>> promise;
+    async_in_buffer operator>(std::future<void> & fut)
+    {
+        promise = std::make_shared<std::promise<void>>();
+        fut = promise->get_future(); return std::move(*this);
+    }
+
+
+    std::shared_ptr<boost::process::async_pipe> pipe;
+
+    async_in_buffer(Buffer & buf) : buf(buf)
+    {
+    }
+    template <typename Executor>
+    inline void on_success(Executor)
+    {
+        auto  pipe_              = this->pipe;
+        if (this->promise)
+        {
+            auto promise_ = this->promise;
+
+            boost::asio::async_write(*pipe_, buf,
+                [pipe_, promise_](const boost::system::error_code & ec, std::size_t)
+                {
+                    if (ec && (ec.value() != EBADF) && (ec.value() != EPERM) && (ec.value() != ENOENT))
+                    {
+                        std::error_code e(ec.value(), std::system_category());
+                        promise_->set_exception(std::make_exception_ptr(process_error(e)));
+                    }
+                    else
+                        promise_->set_value();
+                });
+        }
+        else
+            boost::asio::async_write(*pipe_, buf,
+                [pipe_](const boost::system::error_code&, std::size_t){});
+
+        std::move(*pipe_).source().close();
+
+        this->pipe = nullptr;
+    }
+
+    template<typename Executor>
+    void on_error(Executor &, const std::error_code &) const
+    {
+        std::move(*pipe).source().close();
+    }
+
+    template<typename Executor>
+    void on_setup(Executor & exec)
+    {
+        if (!pipe)
+            pipe = std::make_shared<boost::process::async_pipe>(get_io_context(exec.seq));
+    }
+
+    std::array<int, 3> get_used_handles()
+    {
+        if (pipe)
+            return {STDIN_FILENO, pipe->native_source(), pipe->native_sink()};
+        else  //if pipe is not constructed, limit_ds is invoked before -> this also means on_exec_setup gets invoked before.
+            return {STDIN_FILENO, STDIN_FILENO, STDIN_FILENO};
+    }
+
+
+    template <typename Executor>
+    void on_exec_setup(Executor &exec)
+    {
+        if (::dup2(pipe->native_source(), STDIN_FILENO) == -1)
+            exec.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+
+        if (pipe->native_source() != STDIN_FILENO)
+            ::close(pipe->native_source());
+        ::close(pipe->native_sink());
+    }
+};
+
+
+}}}}
+
+#endif

include/boost/process/detail/posix/async_out.hpp

@@ -1,168 +1,190 @@
-// Copyright (c) 2006, 2007 Julio M. Merino Vidal
-// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
-// Copyright (c) 2009 Boris Schaeling
-// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
-// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_DETAIL_POSIX_ASYNC_OUT_HPP
-#define BOOST_PROCESS_DETAIL_POSIX_ASYNC_OUT_HPP
-
-
-#include <boost/process/detail/posix/handler.hpp>
-#include <boost/asio/posix/stream_descriptor.hpp>
-#include <boost/asio/read.hpp>
-#include <boost/process/async_pipe.hpp>
-#include <istream>
-#include <memory>
-#include <exception>
-#include <future>
-
-namespace boost { namespace process { namespace detail { namespace posix {
-
-
-inline int apply_out_handles(int handle, std::integral_constant<int, 1>, std::integral_constant<int, -1>)
-{
-    return ::dup2(handle, STDOUT_FILENO);
-}
-
-inline int apply_out_handles(int handle, std::integral_constant<int, 2>, std::integral_constant<int, -1>)
-{
-    return ::dup2(handle, STDERR_FILENO);
-}
-
-inline int apply_out_handles(int handle, std::integral_constant<int, 1>, std::integral_constant<int, 2>)
-{
-    if (::dup2(handle, STDOUT_FILENO) == -1)
-        return -1;
-    if (::dup2(handle, STDERR_FILENO) == -1)
-        return -1;
-
-    return 0;
-}
-
-template<int p1, int p2, typename Buffer>
-struct async_out_buffer : ::boost::process::detail::posix::handler_base_ext,
-                          ::boost::process::detail::posix::require_io_service
-{
-    Buffer & buf;
-
-    std::shared_ptr<boost::process::async_pipe> pipe;
-
-
-    async_out_buffer(Buffer & buf) : buf(buf)
-    {
-    }
-
-    template <typename Executor>
-    inline void on_success(Executor &exec)
-    {
-        auto  pipe              = this->pipe;
-        boost::asio::async_read(*pipe, buf,
-                [pipe](const boost::system::error_code&, std::size_t size){});
-
-        this->pipe = nullptr;
-        ::close(pipe->native_sink());
-    }
-
-    template<typename Executor>
-    void on_error(Executor &, const std::error_code &) const
-    {
-        ::close(pipe->native_sink());
-    }
-
-    template<typename Executor>
-    void on_setup(Executor & exec)
-    {
-        pipe = std::make_shared<boost::process::async_pipe>(get_io_service(exec.seq));
-    }
-
-
-    template <typename Executor>
-    void on_exec_setup(Executor &exec)
-    {
-        int res = apply_out_handles(pipe->native_sink(),
-                      std::integral_constant<int, p1>(), std::integral_constant<int, p2>());
-        if (res == -1)
-            exec.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-
-        ::close(pipe->native_sink());
-    }
-};
-
-
-
-
-template<int p1, int p2, typename Type>
-struct async_out_future : ::boost::process::detail::posix::handler_base_ext,
-                          ::boost::process::detail::posix::require_io_service
-{
-    std::shared_ptr<std::promise<Type>> promise = std::make_shared<std::promise<Type>>();
-
-    std::shared_ptr<boost::asio::streambuf> buffer = std::make_shared<boost::asio::streambuf>();
-
-    std::shared_ptr<boost::process::async_pipe> pipe;
-
-    async_out_future(std::future<Type> & fut)
-    {
-        fut = promise->get_future();
-    }
-    template <typename Executor>
-    inline void on_success(Executor &exec)
-    {
-        auto pipe = this->pipe;
-        auto buffer  = this->buffer;
-        auto promise = this->promise;
-        boost::asio::async_read(*pipe, *buffer,
-                [pipe, buffer, promise](const boost::system::error_code& ec, std::size_t size)
-                {
-                    if (ec && (ec.value() != EBADF) && (ec.value() != EPERM) && (ec.value() != ENOENT))
-                    {
-                        std::error_code e(ec.value(), std::system_category());
-                        promise->set_exception(std::make_exception_ptr(process_error(e)));
-                    }
-                    else
-                    {
-                        std::istream is (buffer.get());
-                        Type arg;
-                        arg.resize(buffer->size());
-                        is.read(&*arg.begin(), buffer->size());
-                        promise->set_value(std::move(arg));
-                    }
-                });
-
-        ::close(pipe->native_sink());
-        this->pipe = nullptr;
-    }
-
-    template<typename Executor>
-    void on_error(Executor &, const std::error_code &) const
-    {
-        ::close(pipe->native_sink());
-    }
-
-    template<typename Executor>
-    void on_setup(Executor & exec)
-    {
-        pipe = std::make_shared<boost::process::async_pipe>(get_io_service(exec.seq));
-    }
-
-    template <typename Executor>
-    void on_exec_setup(Executor &exec)
-    {
-
-        int res = apply_out_handles(pipe->native_sink(),
-                      std::integral_constant<int, p1>(), std::integral_constant<int, p2>());
-        if (res == -1)
-            exec.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-
-        ::close(pipe->native_sink());
-    }
-
-};
-
-}}}}
-
-#endif
+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_DETAIL_POSIX_ASYNC_OUT_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_ASYNC_OUT_HPP
+
+
+#include <boost/process/detail/posix/handler.hpp>
+#include <boost/asio/posix/stream_descriptor.hpp>
+#include <boost/asio/read.hpp>
+#include <boost/process/async_pipe.hpp>
+#include <istream>
+#include <memory>
+#include <exception>
+#include <future>
+#include <array>
+#include <boost/process/detail/used_handles.hpp>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+
+inline int apply_out_handles(int handle, std::integral_constant<int, 1>, std::integral_constant<int, -1>)
+{
+    return ::dup2(handle, STDOUT_FILENO);
+}
+
+inline int apply_out_handles(int handle, std::integral_constant<int, 2>, std::integral_constant<int, -1>)
+{
+    return ::dup2(handle, STDERR_FILENO);
+}
+
+inline int apply_out_handles(int handle, std::integral_constant<int, 1>, std::integral_constant<int, 2>)
+{
+    if (::dup2(handle, STDOUT_FILENO) == -1)
+        return -1;
+    if (::dup2(handle, STDERR_FILENO) == -1)
+        return -1;
+
+    return 0;
+}
+
+template<int p1, int p2, typename Buffer>
+struct async_out_buffer : ::boost::process::detail::posix::handler_base_ext,
+                          ::boost::process::detail::posix::require_io_context,
+                          ::boost::process::detail::uses_handles
+{
+    Buffer & buf;
+
+    std::shared_ptr<boost::process::async_pipe> pipe;
+
+    std::array<int, 4> get_used_handles()
+    {
+        const auto pp1 = p1 != -1 ? p1 : p2;
+        const auto pp2 = p2 != -1 ? p2 : p1;
+
+        if (pipe)
+            return {pipe->native_source(), pipe->native_sink(), pp1, pp2};
+        else  //if pipe is not constructed, limit_ds is invoked before -> this also means on_exec_setup gets invoked before.
+            return {pp1, pp2, pp1, pp2};
+    }
+
+
+    async_out_buffer(Buffer & buf) : buf(buf)
+    {
+    }
+
+    template <typename Executor>
+    inline void on_success(Executor &exec)
+    {
+        auto  pipe              = this->pipe;
+        boost::asio::async_read(*pipe, buf,
+                [pipe](const boost::system::error_code&, std::size_t){});
+
+        this->pipe = nullptr;
+        std::move(*pipe).sink().close();
+    }
+
+    template<typename Executor>
+    void on_error(Executor &, const std::error_code &) const
+    {
+        std::move(*pipe).sink().close();
+    }
+
+    template<typename Executor>
+    void on_setup(Executor & exec)
+    {
+        pipe = std::make_shared<boost::process::async_pipe>(get_io_context(exec.seq));
+    }
+
+
+    template <typename Executor>
+    void on_exec_setup(Executor &exec)
+    {
+        int res = apply_out_handles(pipe->native_sink(),
+                      std::integral_constant<int, p1>(), std::integral_constant<int, p2>());
+        if (res == -1)
+            exec.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+
+        ::close(pipe->native_sink());
+        ::close(pipe->native_source());
+
+    }
+};
+
+
+
+
+template<int p1, int p2, typename Type>
+struct async_out_future : ::boost::process::detail::posix::handler_base_ext,
+                          ::boost::process::detail::posix::require_io_context
+{
+    std::shared_ptr<std::promise<Type>> promise = std::make_shared<std::promise<Type>>();
+
+    std::shared_ptr<boost::asio::streambuf> buffer = std::make_shared<boost::asio::streambuf>();
+
+    std::shared_ptr<boost::process::async_pipe> pipe;
+
+    async_out_future(std::future<Type> & fut)
+    {
+        fut = promise->get_future();
+    }
+    template <typename Executor>
+    inline void on_success(Executor &)
+    {
+        auto pipe_ = this->pipe;
+
+        auto buffer_  = this->buffer;
+        auto promise_ = this->promise;
+
+        boost::asio::async_read(*pipe_, *buffer_,
+                [pipe_, buffer_, promise_](const boost::system::error_code& ec, std::size_t)
+                {
+                    if (ec && (ec.value() != ENOENT))
+                    {
+                        std::error_code e(ec.value(), std::system_category());
+                        promise_->set_exception(std::make_exception_ptr(process_error(e)));
+                    }
+                    else
+                    {
+                        std::istream is (buffer_.get());
+                        Type arg;
+                        if (buffer_->size() > 0)
+                        {
+                            arg.resize(buffer_->size());
+                            is.read(&*arg.begin(), buffer_->size());
+                        }
+                        promise_->set_value(std::move(arg));
+                    }
+                });
+
+        std::move(*pipe_).sink().close();
+        this->pipe = nullptr;
+    }
+
+    template<typename Executor>
+    void on_error(Executor &, const std::error_code &) const
+    {
+        std::move(*pipe).sink().close();
+    }
+
+    template<typename Executor>
+    void on_setup(Executor & exec)
+    {
+        pipe = std::make_shared<boost::process::async_pipe>(get_io_context(exec.seq));
+    }
+
+    template <typename Executor>
+    void on_exec_setup(Executor &exec)
+    {
+
+        int res = apply_out_handles(pipe->native_sink(),
+                      std::integral_constant<int, p1>(), std::integral_constant<int, p2>());
+        if (res == -1)
+            exec.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+
+        ::close(pipe->native_sink());
+        ::close(pipe->native_source());
+    }
+
+};
+
+}}}}
+
+#endif

include/boost/process/detail/posix/async_pipe.hpp

@@ -9,8 +9,10 @@
 
 #include <boost/process/detail/posix/basic_pipe.hpp>
 #include <boost/asio/posix/stream_descriptor.hpp>
+#include <boost/asio/post.hpp>
 #include <system_error>
 #include <string>
+#include <utility>
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
@@ -19,13 +21,19 @@ class async_pipe
     ::boost::asio::posix::stream_descriptor _source;
     ::boost::asio::posix::stream_descriptor _sink  ;
 public:
-    typedef int native_handle;
-    typedef ::boost::asio::posix::stream_descriptor   handle_type;
+    typedef int native_handle_type;
+    typedef ::boost::asio::posix::stream_descriptor handle_type;
+    typedef typename handle_type::executor_type executor_type;
 
-    inline async_pipe(boost::asio::io_service & ios) : async_pipe(ios, ios) {}
+    executor_type get_executor()
+    {
+        return _source.get_executor();
+    }
 
-    inline async_pipe(boost::asio::io_service & ios_source,
-                      boost::asio::io_service & ios_sink) : _source(ios_source), _sink(ios_sink)
+    inline async_pipe(boost::asio::io_context & ios) : async_pipe(ios, ios) {}
+
+    inline async_pipe(boost::asio::io_context & ios_source,
+                      boost::asio::io_context & ios_sink) : _source(ios_source), _sink(ios_sink)
     {
         int fds[2];
         if (::pipe(fds) == -1)
@@ -34,28 +42,28 @@ public:
         _source.assign(fds[0]);
         _sink  .assign(fds[1]);
     };
-    inline async_pipe(boost::asio::io_service & ios, const std::string & name)
+    inline async_pipe(boost::asio::io_context & ios, const std::string & name)
         : async_pipe(ios, ios, name) {}
 
-    inline async_pipe(boost::asio::io_service & ios_source,
-                      boost::asio::io_service & io_sink, const std::string & name);
+    inline async_pipe(boost::asio::io_context & ios_source,
+                      boost::asio::io_context & io_sink, const std::string & name);
     inline async_pipe(const async_pipe& lhs);
     async_pipe(async_pipe&& lhs)  : _source(std::move(lhs._source)), _sink(std::move(lhs._sink))
     {
-        lhs._source.assign (-1);
-        lhs._sink  .assign (-1);
+        lhs._source = ::boost::asio::posix::stream_descriptor{lhs._source.get_executor()};
+        lhs._sink   = ::boost::asio::posix::stream_descriptor{lhs._sink.  get_executor()};
     }
 
     template<class CharT, class Traits = std::char_traits<CharT>>
-    explicit async_pipe(::boost::asio::io_service & ios_source,
-                        ::boost::asio::io_service & ios_sink,
+    explicit async_pipe(::boost::asio::io_context & ios_source,
+                        ::boost::asio::io_context & ios_sink,
                          const basic_pipe<CharT, Traits> & p)
             : _source(ios_source, p.native_source()), _sink(ios_sink, p.native_sink())
     {
     }
 
     template<class CharT, class Traits = std::char_traits<CharT>>
-    explicit async_pipe(boost::asio::io_service & ios, const basic_pipe<CharT, Traits> & p)
+    explicit async_pipe(boost::asio::io_context & ios, const basic_pipe<CharT, Traits> & p)
             : async_pipe(ios, ios, p)
     {
     }
@@ -68,10 +76,8 @@ public:
 
     ~async_pipe()
     {
-        if (_sink .native()  != -1)
-            ::close(_sink.native());
-        if (_source.native() != -1)
-            ::close(_source.native());
+        boost::system::error_code ec;
+        close(ec);
     }
 
     template<class CharT, class Traits = std::char_traits<CharT>>
@@ -108,9 +114,9 @@ public:
     void async_close()
     {
         if (_sink.is_open())
-            _sink.get_io_service().  post([this]{_sink.close();});
+            boost::asio::post(_sink.get_executor(),   [this]{_sink.close();});
         if (_source.is_open())
-            _source.get_io_service().post([this]{_source.close();});
+            boost::asio::post(_source.get_executor(), [this]{_source.close();});
     }
 
     template<typename MutableBufferSequence>
@@ -124,10 +130,21 @@ public:
         return _sink.write_some(buffers);
     }
 
-    native_handle native_source() const {return const_cast<boost::asio::posix::stream_descriptor&>(_source).native();}
-    native_handle native_sink  () const {return const_cast<boost::asio::posix::stream_descriptor&>(_sink  ).native();}
+    template<typename MutableBufferSequence>
+    std::size_t read_some(const MutableBufferSequence & buffers, boost::system::error_code & ec) noexcept
+    {
+        return _source.read_some(buffers, ec);
+    }
+    template<typename MutableBufferSequence>
+    std::size_t write_some(const MutableBufferSequence & buffers, boost::system::error_code & ec) noexcept
+    {
+        return _sink.write_some(buffers, ec);
+    }
 
 
+    native_handle_type native_source() const {return const_cast<boost::asio::posix::stream_descriptor&>(_source).native_handle();}
+    native_handle_type native_sink  () const {return const_cast<boost::asio::posix::stream_descriptor&>(_sink  ).native_handle();}
+
     template<typename MutableBufferSequence,
              typename ReadHandler>
     BOOST_ASIO_INITFN_RESULT_TYPE(
@@ -136,7 +153,7 @@ public:
         const MutableBufferSequence & buffers,
               ReadHandler &&handler)
     {
-        _source.async_read_some(buffers, std::forward<ReadHandler>(handler));
+        return _source.async_read_some(buffers, std::forward<ReadHandler>(handler));
     }
 
     template<typename ConstBufferSequence,
@@ -147,44 +164,42 @@ public:
         const ConstBufferSequence & buffers,
         WriteHandler&& handler)
     {
-        _sink.async_write_some(buffers, std::forward<WriteHandler>(handler));
+        return _sink.async_write_some(buffers, std::forward<WriteHandler>(handler));
     }
 
 
     const handle_type & sink  () const & {return _sink;}
     const handle_type & source() const & {return _source;}
 
-    handle_type && source()&&  { return std::move(_sink); }
-    handle_type && sink()  &&  { return std::move(_source); }
+    handle_type && sink()  &&  { return std::move(_sink); }
+    handle_type && source()&&  { return std::move(_source); }
 
-    handle_type source(::boost::asio::io_service& ios) &&
+    handle_type source(::boost::asio::io_context& ios) &&
     {
-        ::boost::asio::posix::stream_descriptor stolen(ios, _source.native_handle());
-        _source.assign(-1);
+        ::boost::asio::posix::stream_descriptor stolen(ios, _source.release());
         return stolen;
     }
-    handle_type sink  (::boost::asio::io_service& ios) &&
+    handle_type sink  (::boost::asio::io_context& ios) &&
     {
-        ::boost::asio::posix::stream_descriptor stolen(ios, _sink.native_handle());
-        _sink.assign(-1);
+        ::boost::asio::posix::stream_descriptor stolen(ios, _sink.release());
         return stolen;
     }
 
-    handle_type source(::boost::asio::io_service& ios) const &
+    handle_type source(::boost::asio::io_context& ios) const &
     {
-        auto source_in = const_cast<::boost::asio::posix::stream_descriptor &>(_source).native();
+        auto source_in = const_cast<::boost::asio::posix::stream_descriptor &>(_source).native_handle();
         return ::boost::asio::posix::stream_descriptor(ios, ::dup(source_in));
     }
-    handle_type sink  (::boost::asio::io_service& ios) const &
+    handle_type sink  (::boost::asio::io_context& ios) const &
     {
-        auto sink_in = const_cast<::boost::asio::posix::stream_descriptor &>(_sink).native();
+        auto sink_in = const_cast<::boost::asio::posix::stream_descriptor &>(_sink).native_handle();
         return ::boost::asio::posix::stream_descriptor(ios, ::dup(sink_in));
     }
 };
 
 
-async_pipe::async_pipe(boost::asio::io_service & ios_source,
-                       boost::asio::io_service & ios_sink,
+async_pipe::async_pipe(boost::asio::io_context & ios_source,
+                       boost::asio::io_context & ios_sink,
                        const std::string & name) : _source(ios_source), _sink(ios_sink)
 {
     auto fifo = mkfifo(name.c_str(), 0666 );
@@ -208,19 +223,19 @@ async_pipe::async_pipe(boost::asio::io_service & ios_source,
 }
 
 async_pipe::async_pipe(const async_pipe & p) :
-        _source(const_cast<async_pipe&>(p)._source.get_io_service()),
-        _sink(  const_cast<async_pipe&>(p)._sink.get_io_service())
+        _source(const_cast<async_pipe&>(p)._source.get_executor()),
+        _sink(  const_cast<async_pipe&>(p)._sink.get_executor())
 {
 
     //cannot get the handle from a const object.
-    auto source_in = const_cast<::boost::asio::posix::stream_descriptor &>(_source).native();
-    auto sink_in   = const_cast<::boost::asio::posix::stream_descriptor &>(_sink).native();
+    auto source_in = const_cast<::boost::asio::posix::stream_descriptor &>(_source).native_handle();
+    auto sink_in   = const_cast<::boost::asio::posix::stream_descriptor &>(_sink).native_handle();
     if (source_in == -1)
         _source.assign(-1);
     else
     {
         _source.assign(::dup(source_in));
-        if (_source.native()== -1)
+        if (_source.native_handle()== -1)
             ::boost::process::detail::throw_last_error("dup()");
     }
 
@@ -229,7 +244,7 @@ async_pipe::async_pipe(const async_pipe & p) :
     else
     {
         _sink.assign(::dup(sink_in));
-        if (_sink.native() == -1)
+        if (_sink.native_handle() == -1)
             ::boost::process::detail::throw_last_error("dup()");
     }
 }
@@ -240,8 +255,8 @@ async_pipe& async_pipe::operator=(const async_pipe & p)
     int sink;
 
     //cannot get the handle from a const object.
-    auto source_in = const_cast<::boost::asio::posix::stream_descriptor &>(_source).native();
-    auto sink_in   = const_cast<::boost::asio::posix::stream_descriptor &>(_sink).native();
+    auto source_in = const_cast<::boost::asio::posix::stream_descriptor &>(p._source).native_handle();
+    auto sink_in   = const_cast<::boost::asio::posix::stream_descriptor &>(p._sink).native_handle();
     if (source_in == -1)
         source = -1;
     else
@@ -267,16 +282,8 @@ async_pipe& async_pipe::operator=(const async_pipe & p)
 
 async_pipe& async_pipe::operator=(async_pipe && lhs)
 {
-    if (_source.native_handle() == -1)
-         ::close(_source.native());
-
-    if (_sink.native_handle()   == -1)
-        ::close(_sink.native());
-
-    _source.assign(lhs._source.native_handle());
-    _sink  .assign(lhs._sink  .native_handle());
-    lhs._source.assign(-1);
-    lhs._sink  .assign(-1);
+    std::swap(_source, lhs._source);
+    std::swap(_sink, lhs._sink);
     return *this;
 }
 
@@ -287,8 +294,8 @@ async_pipe::operator basic_pipe<CharT, Traits>() const
     int sink;
 
     //cannot get the handle from a const object.
-    auto source_in = const_cast<::boost::asio::posix::stream_descriptor &>(_source).native();
-    auto sink_in   = const_cast<::boost::asio::posix::stream_descriptor &>(_sink).native();
+    auto source_in = const_cast<::boost::asio::posix::stream_descriptor &>(_source).native_handle();
+    auto sink_in   = const_cast<::boost::asio::posix::stream_descriptor &>(_sink).native_handle();
 
 
     if (source_in == -1)
@@ -309,7 +316,7 @@ async_pipe::operator basic_pipe<CharT, Traits>() const
             ::boost::process::detail::throw_last_error("dup()");
     }
 
-    return {source, sink};
+    return basic_pipe<CharT, Traits>{source, sink};
 }
 
 

include/boost/process/detail/posix/basic_cmd.hpp

@@ -39,10 +39,10 @@ inline std::string build_cmd_shell(const std::string & exe, std::vector<std::str
             //the first one is put directly onto the output,
             //because then I don't have to copy the whole string
             arg.insert(arg.begin(), '"' );
-            arg += '"'; //thats the post one.
+            arg += '"'; //that is the post one.
         }
 
-        if (!st.empty())//first one does not need a preceeding space
+        if (!st.empty())//first one does not need a preceding space
             st += ' ';
 
         st += arg;
@@ -110,17 +110,19 @@ struct exe_cmd_init<char> : boost::process::detail::api::handler_base_ext
     template <class Executor>
     void on_setup(Executor& exec) 
     {
-        if (exe.empty())
-            exec.exe = args.front().c_str();
+        if (exe.empty()) //cmd style
+        {
+            if (args.empty())
+                exec.exe = "";
+            else
+                exec.exe = args.front().c_str();    
+            exec.cmd_style = true;
+        }
         else
             exec.exe = &exe.front();
 
-
-        if (!args.empty())
-        {
-            cmd_impl = make_cmd();
-            exec.cmd_line = cmd_impl.data();
-        }
+        cmd_impl = make_cmd();
+        exec.cmd_line = cmd_impl.data();
     }
     static exe_cmd_init exe_args(std::string && exe, std::vector<std::string> && args) {return exe_cmd_init(std::move(exe), std::move(args));}
     static exe_cmd_init cmd     (std::string && cmd)
@@ -140,7 +142,7 @@ struct exe_cmd_init<char> : boost::process::detail::api::handler_base_ext
     }
     static exe_cmd_init cmd_shell(std::string&& cmd)
     {
-        std::vector<std::string> args = {"-c", "\"" + cmd + "\""};
+        std::vector<std::string> args = {"-c", cmd};
         std::string sh = shell().string();
 
         return exe_cmd_init(
@@ -156,12 +158,16 @@ private:
 
 std::vector<char*> exe_cmd_init<char>::make_cmd()
 {
+    // any string must be writable.
+    static char empty_string[1] = "";
     std::vector<char*> vec;
     if (!exe.empty())
-        vec.push_back(&exe.front());
+        vec.push_back(exe.empty() ? empty_string : &exe.front());
 
-    for (auto & v : args)
-        vec.push_back(&v.front());
+    if (!args.empty()) {
+        for (auto & v : args)
+            vec.push_back(v.empty() ? empty_string : &v.front());
+    }
 
     vec.push_back(nullptr);
 

include/boost/process/detail/posix/basic_pipe.hpp

@@ -11,7 +11,7 @@
 #define BOOST_PROCESS_POSIX_PIPE_HPP
 
 
-#include <boost/filesystem.hpp>
+#include <boost/process/filesystem.hpp>
 #include <boost/process/detail/posix/compare_handles.hpp>
 #include <system_error>
 #include <array>
@@ -29,13 +29,13 @@ class basic_pipe
     int _sink   = -1;
 public:
     explicit basic_pipe(int source, int sink) : _source(source), _sink(sink) {}
-    explicit basic_pipe(int source, int sink, const std::string & name) : _source(source), _sink(sink) {}
+    explicit basic_pipe(int source, int sink, const std::string&) : _source(source), _sink(sink) {}
     typedef CharT                      char_type  ;
     typedef          Traits            traits_type;
     typedef typename Traits::int_type  int_type   ;
     typedef typename Traits::pos_type  pos_type   ;
     typedef typename Traits::off_type  off_type   ;
-    typedef          int               native_handle;
+    typedef          int               native_handle_type;
 
     basic_pipe()
     {
@@ -71,28 +71,38 @@ public:
         if (_source != -1)
             ::close(_source);
     }
-    native_handle native_source() const {return _source;}
-    native_handle native_sink  () const {return _sink;}
+    native_handle_type native_source() const {return _source;}
+    native_handle_type native_sink  () const {return _sink;}
 
+    void assign_source(native_handle_type h) { _source = h;}
+    void assign_sink  (native_handle_type h) { _sink = h;}
 
     int_type write(const char_type * data, int_type count)
     {
-        auto write_len = ::write(_sink, data, count * sizeof(char_type));
-        if (write_len == -1)
-            ::boost::process::detail::throw_last_error();
-
-        return write_len;
+        ssize_t write_len;
+        while ((write_len = ::write(_sink, data, count * sizeof(char_type))) == -1)
+        {
+            //Try again if interrupted
+            auto err = errno;
+            if (err != EINTR)
+                ::boost::process::detail::throw_last_error();
+        }
+        return static_cast<int_type>(write_len);
     }
     int_type read(char_type * data, int_type count)
     {
-        auto read_len = ::read(_source, data, count * sizeof(char_type));
-        if (read_len == -1)
-            ::boost::process::detail::throw_last_error();
-
-        return read_len;
+        ssize_t read_len;
+        while ((read_len = ::read(_source, data, count * sizeof(char_type))) == -1)
+        {
+            //Try again if interrupted
+            auto err = errno;
+            if (err != EINTR)
+                ::boost::process::detail::throw_last_error();
+        }
+        return static_cast<int_type>(read_len);
     }
 
-    bool is_open()
+    bool is_open() const
     {
         return (_source != -1) ||
                (_sink   != -1);
@@ -100,8 +110,10 @@ public:
 
     void close()
     {
-        ::close(_source);
-        ::close(_sink);
+        if (_source != -1)
+            ::close(_source);
+        if (_sink != -1)
+            ::close(_sink);
         _source = -1;
         _sink   = -1;
     }

include/boost/process/detail/posix/child_handle.hpp

@@ -44,7 +44,7 @@ struct child_handle
         return pid;
     }
     bool in_group() const {return true;}
-    bool in_group(std::error_code &ec) const noexcept {return true;}
+    bool in_group(std::error_code&) const noexcept {return true;}
 
     typedef int process_handle_t;
     process_handle_t process_handle() const { return pid; }

include/boost/process/detail/posix/close_in.hpp

@@ -12,10 +12,11 @@
 
 
 #include <boost/process/detail/posix/handler.hpp>
+#include <boost/process/detail/used_handles.hpp>
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
-struct close_in : handler_base_ext
+struct close_in : handler_base_ext, ::boost::process::detail::uses_handles
 {
     template <class Executor>
     void on_exec_setup(Executor &e) const
@@ -23,6 +24,9 @@ struct close_in : handler_base_ext
         if (::close(STDIN_FILENO) == -1)
             e.set_error(::boost::process::detail::get_last_error(), "close() failed");
     }
+
+    int get_used_handles() {return STDIN_FILENO;}
+
 };
 
 }}}}

include/boost/process/detail/posix/close_out.hpp

@@ -10,8 +10,9 @@
 #ifndef BOOST_PROCESS_DETAIL_POSIX_CLOSE_OUT_HPP
 #define BOOST_PROCESS_DETAIL_POSIX_CLOSE_OUT_HPP
 
-
+#include <boost/process/detail/used_handles.hpp>
 #include <boost/process/detail/posix/handler.hpp>
+#include <array>
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
@@ -20,6 +21,8 @@ struct close_out : handler_base_ext
 {
     template <class Executor>
     inline void on_exec_setup(Executor &e) const;
+
+    std::array<int, 2> get_used_handles() {return {{p1 != -1 ? p1 : p2, p2 != -1 ? p2 : p1}};}
 };
 
 template<>

include/boost/process/detail/posix/cmd.hpp

@@ -22,7 +22,6 @@ namespace posix
 {
 
 
-
 template<typename Char>
 inline std::vector<std::basic_string<Char>> build_cmd(const std::basic_string<Char> & value)
 {
@@ -61,7 +60,9 @@ struct cmd_setter_ : handler_base_ext
     template <class Executor>
     void on_setup(Executor& exec) 
     {
+        exec.exe = _cmd_impl.front();
         exec.cmd_line = &_cmd_impl.front();
+        exec.cmd_style = true;
     }
     string_type str() const
     {

include/boost/process/detail/posix/environment.hpp

@@ -1,325 +1,327 @@
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_DETAIL_POSIX_ENVIRONMENT_HPP_
-#define BOOST_PROCESS_DETAIL_POSIX_ENVIRONMENT_HPP_
-
-#include <string>
-#include <vector>
-#include <unordered_map>
-#include <boost/process/detail/config.hpp>
-#include <algorithm>
-#include <cstdlib>
-#include <boost/process/locale.hpp>
-
-
-namespace boost { namespace process { namespace detail { namespace posix {
-
-template<typename Char>
-class native_environment_impl
-{
-    static std::vector<std::basic_string<Char>>  _load()
-    {
-        std::vector<std::basic_string<Char>> val;
-        auto p = environ;
-        while (*p != nullptr)
-        {
-            std::string str = *p;
-            val.push_back(::boost::process::detail::convert(str));
-            p++;
-        }
-        return val;
-    }
-    static std::vector<Char*> _load_var(std::vector<std::basic_string<Char>> & vec)
-    {
-        std::vector<Char*> val;
-        val.resize(vec.size() + 1);
-        std::transform(vec.begin(), vec.end(), val.begin(),
-                [](std::basic_string<Char> & str)
-                {
-                    return &str.front();
-                });
-        val.back() = nullptr;
-        return val;
-    }
-    std::vector<std::basic_string<Char>> _buffer = _load();
-    std::vector<Char*> _impl = _load_var(_buffer);
-public:
-    using char_type = Char;
-    using pointer_type = const char_type*;
-    using string_type = std::basic_string<char_type>;
-    using native_handle_type = char_type **;
-
-    void reload()
-    {
-        _buffer = _load();
-        _impl = _load_var(_buffer);
-    }
-
-    string_type get(const pointer_type id) { return get(string_type(id)); }
-    void        set(const pointer_type id, const pointer_type value)
-    {
-        set(string_type(id), string_type(value));
-    }
-    void      reset(const pointer_type id) { reset(string_type(id)); }
-
-    string_type get(const string_type & id)
-    {
-        std::string id_c = ::boost::process::detail::convert(id);
-        std::string g = ::getenv(id_c.c_str());
-        return ::boost::process::detail::convert(g.c_str());
-    }
-    void        set(const string_type & id, const string_type & value)
-    {
-        std::string id_c    = ::boost::process::detail::convert(id.c_str());
-        std::string value_c = ::boost::process::detail::convert(value.c_str());
-        auto res = ::setenv(id_c.c_str(), value_c.c_str(), true);
-        if (res != 0)
-            boost::process::detail::throw_last_error();
-    }
-    void      reset(const string_type & id)
-    {
-        std::string id_c = ::boost::process::detail::convert(id.c_str());
-        auto res = ::unsetenv(id_c.c_str());
-        if (res != 0)
-            ::boost::process::detail::throw_last_error();
-    }
-
-    native_environment_impl() = default;
-    native_environment_impl(const native_environment_impl& ) = delete;
-    native_environment_impl(native_environment_impl && ) = default;
-    native_environment_impl & operator=(const native_environment_impl& ) = delete;
-    native_environment_impl & operator=(native_environment_impl && ) = default;
-    native_handle_type _env_impl = _impl.data();
-
-    native_handle_type native_handle() const {return environ;}
-};
-
-template<>
-class native_environment_impl<char>
-{
-public:
-    using char_type = char;
-    using pointer_type = const char_type*;
-    using string_type = std::basic_string<char_type>;
-    using native_handle_type = char_type **;
-
-    void reload() {}
-
-    string_type get(const pointer_type id) { return getenv(id); }
-    void        set(const pointer_type id, const pointer_type value)
-    {
-        auto val = std::string(id) + "=" + value;
-        auto res = ::setenv(id, value, true);
-        if (res != 0)
-            boost::process::detail::throw_last_error();
-    }
-    void      reset(const pointer_type id)
-    {
-        auto res = ::unsetenv(id);
-        if (res != 0)
-            boost::process::detail::throw_last_error();
-    }
-
-    string_type get(const string_type & id) {return get(id.c_str());}
-    void        set(const string_type & id, const string_type & value) {set(id.c_str(), value.c_str()); }
-    void      reset(const string_type & id) {reset(id.c_str());}
-
-    native_environment_impl() = default;
-    native_environment_impl(const native_environment_impl& ) = delete;
-    native_environment_impl(native_environment_impl && ) = default;
-    native_environment_impl & operator=(const native_environment_impl& ) = delete;
-    native_environment_impl & operator=(native_environment_impl && ) = default;
-    native_handle_type _env_impl = environ;
-
-    native_handle_type native_handle() const {return environ;}
-};
-
-
-
-template<typename Char>
-struct basic_environment_impl
-{
-    std::vector<std::basic_string<Char>> _data {};
-    static std::vector<Char*> _load_var(std::vector<std::basic_string<Char>> & data);
-    std::vector<Char*> _env_arr{_load_var(_data)};
-public:
-    using char_type = Char;
-    using pointer_type = const char_type*;
-    using string_type = std::basic_string<char_type>;
-    using native_handle_type = Char**;
-    void reload()
-    {
-        _env_arr = _load_var(_data);
-        _env_impl = _env_arr.data();
-    }
-
-    string_type get(const pointer_type id) {return get(string_type(id));}
-    void        set(const pointer_type id, const pointer_type value) {set(string_type(id), value);}
-    void      reset(const pointer_type id)  {reset(string_type(id));}
-
-    string_type get(const string_type & id);
-    void        set(const string_type & id, const string_type & value);
-    void      reset(const string_type & id);
-
-    basic_environment_impl(const native_environment_impl<Char> & nei);
-    basic_environment_impl() = default;
-    basic_environment_impl(const basic_environment_impl& rhs)
-        : _data(rhs._data)
-    {
-
-    }
-    basic_environment_impl(basic_environment_impl && ) = default;
-    basic_environment_impl & operator=(const basic_environment_impl& rhs)
-    {
-        _data = rhs._data;
-        _env_arr = _load_var(_data);
-        _env_impl = &*_env_arr.begin();
-        return *this;
-    }
-    basic_environment_impl & operator=(basic_environment_impl && ) = default;
-
-    template<typename CharR>
-    explicit inline  basic_environment_impl(
-                const basic_environment_impl<CharR>& rhs,
-                const ::boost::process::codecvt_type & cv = ::boost::process::codecvt())
-        : _data(rhs._data.size())
-    {
-        std::transform(rhs._data.begin(), rhs._data.end(), _data.begin(),
-                [&](const std::basic_string<CharR> & st)
-                {
-                    return ::boost::process::detail::convert(st, cv);
-                }
-
-            );
-        reload();
-    }
-
-    template<typename CharR>
-    basic_environment_impl & operator=(const basic_environment_impl<CharR>& rhs)
-    {
-        _data = ::boost::process::detail::convert(rhs._data);
-        _env_arr = _load_var(&*_data.begin());
-        _env_impl = &*_env_arr.begin();
-        return *this;
-    }
-
-    Char ** _env_impl = &*_env_arr.data();
-
-    native_handle_type native_handle() const {return &_data.front();}
-};
-
-
-template<typename Char>
-basic_environment_impl<Char>::basic_environment_impl(const native_environment_impl<Char> & nei)
-{
-    auto beg = nei.native_handle();
-
-    auto end = beg;
-    while (*end != nullptr)
-        end++;
-    this->_data.assign(beg, end);
-    reload();
-}
-
-
-template<typename Char>
-inline auto basic_environment_impl<Char>::get(const string_type &id) -> string_type
-{
-    auto itr = std::find_if(_data.begin(), _data.end(), 
-            [&](const string_type & st)
-            {
-                if (st.size() <= id.size())
-                    return false;
-                return std::equal(id.begin(), id.end(), st.begin()) && (st[id.size()] == equal_sign<Char>());
-            }
-        );
-
-    if (itr == _data.end())
-    {
-        return "";
-    }
-    else return
-        itr->data() + id.size(); //id=Thingy -> +2 points to T
-}
-
-template<typename Char>
-inline void basic_environment_impl<Char>::set(const string_type &id, const string_type &value)
-{
-    auto itr = std::find_if(_data.begin(), _data.end(), 
-        [&](const string_type & st)
-        {
-            if (st.size() <= id.size())
-                return false;
-            return std::equal(id.begin(), id.end(), st.begin()) && (st[id.size()] == equal_sign<Char>());
-        }
-    );
-
-    if (itr != _data.end())
-    {
-        *itr = id + equal_sign<Char>() + value;
-    }
-    else 
-    {
-        _data.push_back(id + equal_sign<Char>() + value);
-    }
-
-    reload();
-}
-
-template<typename Char>
-inline void  basic_environment_impl<Char>::reset(const string_type &id)
-{
-    auto itr = std::find_if(_data.begin(), _data.end(), 
-        [&](const string_type & st)
-        {
-            if (st.size() <= id.size())
-                return false;
-            return std::equal(id.begin(), id.end(), st.begin()) && (st[id.size()] == equal_sign<Char>());
-        }
-    );
-    if (itr != _data.end())
-    {
-        _data.erase(itr);//and remove it    
-    }
-    
-    reload();
-
-
-}
-
-template<typename Char>
-std::vector<Char*> basic_environment_impl<Char>::_load_var(std::vector<std::basic_string<Char>> & data)
-{
-    std::vector<Char*> ret;
-    ret.reserve(data.size() +1);
-
-    for (auto & val : data)
-        ret.push_back(&val.front());
-
-    ret.push_back(nullptr);
-    return ret;
-}
-
-template<typename T> constexpr T env_seperator();
-template<> constexpr   char   env_seperator() {return  ':'; }
-template<> constexpr  wchar_t env_seperator() {return L':'; }
-
-
-typedef int native_handle_t;
-
-inline int  get_id()        {return getpid(); }
-inline int native_handle()  {return getpid(); }
-
-}
-
-}
-}
-}
-
-
-
-
-#endif /* BOOST_PROCESS_DETAIL_WINDOWS_ENV_STORAGE_HPP_ */
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_DETAIL_POSIX_ENVIRONMENT_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_ENVIRONMENT_HPP_
+
+#include <string>
+#include <vector>
+#include <unordered_map>
+#include <boost/process/detail/config.hpp>
+#include <algorithm>
+#include <cstdlib>
+#include <boost/process/locale.hpp>
+
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+template<typename Char>
+class native_environment_impl
+{
+    static std::vector<std::basic_string<Char>>  _load()
+    {
+        std::vector<std::basic_string<Char>> val;
+        auto p = environ;
+        while (*p != nullptr)
+        {
+            std::string str = *p;
+            val.push_back(::boost::process::detail::convert(str));
+            p++;
+        }
+        return val;
+    }
+    static std::vector<Char*> _load_var(std::vector<std::basic_string<Char>> & vec)
+    {
+        std::vector<Char*> val;
+        val.resize(vec.size() + 1);
+        std::transform(vec.begin(), vec.end(), val.begin(),
+                [](std::basic_string<Char> & str)
+                {
+                    return &str.front();
+                });
+        val.back() = nullptr;
+        return val;
+    }
+    std::vector<std::basic_string<Char>> _buffer = _load();
+    std::vector<Char*> _impl = _load_var(_buffer);
+public:
+    using char_type = Char;
+    using pointer_type = const char_type*;
+    using string_type = std::basic_string<char_type>;
+    using native_handle_type = char_type **;
+
+    void reload()
+    {
+        _buffer = _load();
+        _impl = _load_var(_buffer);
+        _env_impl = _impl.data();
+    }
+
+    string_type get(const pointer_type id) { return get(string_type(id)); }
+    void        set(const pointer_type id, const pointer_type value)
+    {
+        set(string_type(id), string_type(value));
+    }
+    void      reset(const pointer_type id) { reset(string_type(id)); }
+
+    string_type get(const string_type & id)
+    {
+        std::string id_c = ::boost::process::detail::convert(id);
+        std::string g = ::getenv(id_c.c_str());
+        return ::boost::process::detail::convert(g.c_str());
+    }
+    void        set(const string_type & id, const string_type & value)
+    {
+        std::string id_c    = ::boost::process::detail::convert(id.c_str());
+        std::string value_c = ::boost::process::detail::convert(value.c_str());
+        auto res = ::setenv(id_c.c_str(), value_c.c_str(), true);
+        if (res != 0)
+            boost::process::detail::throw_last_error();
+    }
+    void      reset(const string_type & id)
+    {
+        std::string id_c = ::boost::process::detail::convert(id.c_str());
+        auto res = ::unsetenv(id_c.c_str());
+        if (res != 0)
+            ::boost::process::detail::throw_last_error();
+    }
+
+    native_environment_impl() = default;
+    native_environment_impl(const native_environment_impl& ) = delete;
+    native_environment_impl(native_environment_impl && ) = default;
+    native_environment_impl & operator=(const native_environment_impl& ) = delete;
+    native_environment_impl & operator=(native_environment_impl && ) = default;
+    native_handle_type _env_impl = _impl.data();
+
+    native_handle_type native_handle() const {return _env_impl;}
+};
+
+template<>
+class native_environment_impl<char>
+{
+public:
+    using char_type = char;
+    using pointer_type = const char_type*;
+    using string_type = std::basic_string<char_type>;
+    using native_handle_type = char_type **;
+
+    void reload() {this->_env_impl = ::environ;}
+
+    string_type get(const pointer_type id) { return getenv(id); }
+    void        set(const pointer_type id, const pointer_type value)
+    {
+        auto res = ::setenv(id, value, 1);
+        if (res != 0)
+            boost::process::detail::throw_last_error();
+        reload();
+    }
+    void      reset(const pointer_type id)
+    {
+        auto res = ::unsetenv(id);
+        if (res != 0)
+            boost::process::detail::throw_last_error();
+        reload();
+    }
+
+    string_type get(const string_type & id) {return get(id.c_str());}
+    void        set(const string_type & id, const string_type & value) {set(id.c_str(), value.c_str()); }
+    void      reset(const string_type & id) {reset(id.c_str());}
+
+    native_environment_impl() = default;
+    native_environment_impl(const native_environment_impl& ) = delete;
+    native_environment_impl(native_environment_impl && ) = default;
+    native_environment_impl & operator=(const native_environment_impl& ) = delete;
+    native_environment_impl & operator=(native_environment_impl && ) = default;
+    native_handle_type _env_impl = environ;
+
+    native_handle_type native_handle() const {return ::environ;}
+};
+
+
+
+template<typename Char>
+struct basic_environment_impl
+{
+    std::vector<std::basic_string<Char>> _data {};
+    static std::vector<Char*> _load_var(std::vector<std::basic_string<Char>> & data);
+    std::vector<Char*> _env_arr{_load_var(_data)};
+public:
+    using char_type = Char;
+    using pointer_type = const char_type*;
+    using string_type = std::basic_string<char_type>;
+    using native_handle_type = Char**;
+    void reload()
+    {
+        _env_arr = _load_var(_data);
+        _env_impl = _env_arr.data();
+    }
+
+    string_type get(const pointer_type id) {return get(string_type(id));}
+    void        set(const pointer_type id, const pointer_type value) {set(string_type(id), value);}
+    void      reset(const pointer_type id)  {reset(string_type(id));}
+
+    string_type get(const string_type & id);
+    void        set(const string_type & id, const string_type & value);
+    void      reset(const string_type & id);
+
+    basic_environment_impl(const native_environment_impl<Char> & nei);
+    basic_environment_impl() = default;
+    basic_environment_impl(const basic_environment_impl& rhs)
+        : _data(rhs._data)
+    {
+
+    }
+    basic_environment_impl(basic_environment_impl && ) = default;
+    basic_environment_impl & operator=(const basic_environment_impl& rhs)
+    {
+        _data = rhs._data;
+        _env_arr = _load_var(_data);
+        _env_impl = &*_env_arr.begin();
+        return *this;
+    }
+    basic_environment_impl & operator=(basic_environment_impl && ) = default;
+
+    template<typename CharR>
+    explicit inline  basic_environment_impl(
+                const basic_environment_impl<CharR>& rhs,
+                const ::boost::process::codecvt_type & cv = ::boost::process::codecvt())
+        : _data(rhs._data.size())
+    {
+        std::transform(rhs._data.begin(), rhs._data.end(), _data.begin(),
+                [&](const std::basic_string<CharR> & st)
+                {
+                    return ::boost::process::detail::convert(st, cv);
+                }
+
+            );
+        reload();
+    }
+
+    template<typename CharR>
+    basic_environment_impl & operator=(const basic_environment_impl<CharR>& rhs)
+    {
+        _data = ::boost::process::detail::convert(rhs._data);
+        _env_arr = _load_var(&*_data.begin());
+        _env_impl = &*_env_arr.begin();
+        return *this;
+    }
+
+    Char ** _env_impl = &*_env_arr.data();
+
+    native_handle_type native_handle() const {return _env_impl;}
+};
+
+
+template<typename Char>
+basic_environment_impl<Char>::basic_environment_impl(const native_environment_impl<Char> & nei)
+{
+    auto beg = nei.native_handle();
+
+    auto end = beg;
+    while (*end != nullptr)
+        end++;
+    this->_data.assign(beg, end);
+    reload();
+}
+
+
+template<typename Char>
+inline auto basic_environment_impl<Char>::get(const string_type &id) -> string_type
+{
+    auto itr = std::find_if(_data.begin(), _data.end(), 
+            [&](const string_type & st) -> bool
+            {
+                if (st.size() <= id.size())
+                    return false;
+                return std::equal(id.begin(), id.end(), st.begin()) && (st[id.size()] == equal_sign<Char>());
+            }
+        );
+
+    if (itr == _data.end())
+    {
+        return "";
+    }
+    else return
+        itr->data() + id.size(); //id=Thingy -> +2 points to T
+}
+
+template<typename Char>
+inline void basic_environment_impl<Char>::set(const string_type &id, const string_type &value)
+{
+    auto itr = std::find_if(_data.begin(), _data.end(), 
+        [&](const string_type & st) -> bool
+        {
+            if (st.size() <= id.size())
+                return false;
+            return std::equal(id.begin(), id.end(), st.begin()) && (st[id.size()] == equal_sign<Char>());
+        }
+    );
+
+    if (itr != _data.end())
+        *itr = id + equal_sign<Char>() + value;
+    else 
+        _data.push_back(id + equal_sign<Char>() + value);
+
+    reload();
+}
+
+template<typename Char>
+inline void  basic_environment_impl<Char>::reset(const string_type &id)
+{
+    auto itr = std::find_if(_data.begin(), _data.end(), 
+        [&](const string_type & st) -> bool
+        {
+            if (st.size() <= id.size())
+                return false;
+            return std::equal(id.begin(), id.end(), st.begin()) && (st[id.size()] == equal_sign<Char>());
+        }
+    );
+    if (itr != _data.end())
+    {
+        _data.erase(itr);//and remove it    
+    }
+    
+    reload();
+
+
+}
+
+template<typename Char>
+std::vector<Char*> basic_environment_impl<Char>::_load_var(std::vector<std::basic_string<Char>> & data)
+{
+    std::vector<Char*> ret;
+    ret.reserve(data.size() +1);
+
+    for (auto & val : data)
+    {
+        if (val.empty())
+            val.push_back(0);
+        ret.push_back(&val.front());
+    }
+
+    ret.push_back(nullptr);
+    return ret;
+}
+
+template<typename T> constexpr T env_seperator();
+template<> constexpr   char   env_seperator() {return  ':'; }
+template<> constexpr  wchar_t env_seperator() {return L':'; }
+
+
+typedef int native_handle_t;
+
+inline int  get_id()        {return getpid(); }
+inline int native_handle()  {return getpid(); }
+
+}
+
+}
+}
+}
+
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_WINDOWS_ENV_STORAGE_HPP_ */

include/boost/process/detail/posix/executor.hpp

@@ -8,7 +8,7 @@
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
 
 #ifndef BOOST_PROCESS_DETAIL_POSIX_EXECUTOR_HPP
-#define BOOST_PROCESS_POSIX_EXECUTOR_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_EXECUTOR_HPP
 
 #include <boost/process/detail/child_decl.hpp>
 #include <boost/process/error.hpp>
@@ -22,6 +22,11 @@
 #include <errno.h>
 #include <unistd.h>
 
+#include <boost/algorithm/string/predicate.hpp>
+#include <boost/algorithm/string/split.hpp>
+#include <boost/algorithm/string/classification.hpp>
+
+#include <boost/core/ignore_unused.hpp>
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
@@ -47,7 +52,7 @@ struct on_error_t
     template<typename T>
     void operator()(T & t) const
     {
-           t.on_error(exec, error);
+        t.on_error(exec, error);
     }
 };
 
@@ -105,20 +110,34 @@ struct on_exec_error_t
     }
 };
 
+template<typename Executor>
+struct on_fork_success_t
+{
+    Executor & exec;
+    on_fork_success_t(Executor & exec) : exec(exec) {};
+
+    template<typename T>
+    void operator()(T & t) const
+    {
+        t.on_fork_success(exec);
+    }
+};
+
 template<typename Executor> on_setup_t  <Executor> call_on_setup  (Executor & exec) {return exec;}
-template<typename Executor> on_error_t  <Executor> call_on_error  (Executor & exec, const std::error_code & ec) 
+template<typename Executor> on_error_t  <Executor> call_on_error  (Executor & exec, const std::error_code & ec)
 {
     return on_error_t<Executor> (exec, ec);
 }
 template<typename Executor> on_success_t<Executor> call_on_success(Executor & exec) {return exec;}
 
-template<typename Executor> on_fork_error_t  <Executor> call_on_fork_error  (Executor & exec, const std::error_code & ec) 
+template<typename Executor> on_fork_error_t  <Executor> call_on_fork_error  (Executor & exec, const std::error_code & ec)
 {
     return on_fork_error_t<Executor> (exec, ec);
 }
 
+
 template<typename Executor> on_exec_setup_t  <Executor> call_on_exec_setup  (Executor & exec) {return exec;}
-template<typename Executor> on_exec_error_t  <Executor> call_on_exec_error  (Executor & exec, const std::error_code & ec) 
+template<typename Executor> on_exec_error_t  <Executor> call_on_exec_error  (Executor & exec, const std::error_code & ec)
 {
     return on_exec_error_t<Executor> (exec, ec);
 }
@@ -128,19 +147,19 @@ template<typename Sequence>
 class executor
 {
     template<typename HasHandler, typename UseVFork>
-    void internal_error_handle(const std::error_code &ec, const char* msg, HasHandler, boost::mpl::true_, UseVFork) {}
+    void internal_error_handle(const std::error_code&, const char*, HasHandler, boost::mpl::true_, UseVFork) {}
 
     int _pipe_sink = -1;
 
+
     void write_error(const std::error_code & ec, const char * msg)
     {
         //I am the child
-        int len = ec.value();
-        ::write(_pipe_sink, &len, sizeof(int));
+        const auto len = static_cast<int>(std::strlen(msg));
+        int data[2] = {ec.value(), len + 1};
 
-        len = std::strlen(msg) + 1;
-        ::write(_pipe_sink, &len, sizeof(int));
-        ::write(_pipe_sink, msg, len);
+        boost::ignore_unused(::write(_pipe_sink, &data[0], sizeof(int) * 2));
+        boost::ignore_unused(::write(_pipe_sink, msg, len));
     }
 
     void internal_error_handle(const std::error_code &ec, const char* msg, boost::mpl::true_ , boost::mpl::false_, boost::mpl::false_)
@@ -181,14 +200,14 @@ class executor
     void check_error(boost::mpl::true_) {};
     void check_error(boost::mpl::false_)
     {
-        throw process_error(_ec, _msg);
+        if (_ec)
+            throw process_error(_ec, _msg);
     }
 
     typedef typename ::boost::process::detail::has_error_handler<Sequence>::type has_error_handler;
     typedef typename ::boost::process::detail::has_ignore_error <Sequence>::type has_ignore_error;
     typedef typename ::boost::process::detail::posix::shall_use_vfork<Sequence>::type shall_use_vfork;
 
-
     inline child invoke(boost::mpl::true_ , boost::mpl::true_ );
     inline child invoke(boost::mpl::false_, boost::mpl::true_ );
     inline child invoke(boost::mpl::true_ , boost::mpl::false_ );
@@ -241,13 +260,44 @@ class executor
             auto err = errno;
             if ((err == EBADF) || (err == EPERM))//that should occur on success, therefore return.
                 return;
-            //EAGAIN not yet forked, EINTR interrupted, i.e. try again
+                //EAGAIN not yet forked, EINTR interrupted, i.e. try again
             else if ((err != EAGAIN ) && (err != EINTR))
                 set_error(std::error_code(err, std::system_category()), "Error read pipe");
         }
         set_error(ec, std::move(msg));
     }
 
+    std::string prepare_cmd_style_fn; //buffer
+
+    inline void prepare_cmd_style() //this does what execvpe does - but we execute it in the father process, to avoid allocations.
+    {
+        //use my own implementation
+        prepare_cmd_style_fn = exe;
+        if ((prepare_cmd_style_fn.find('/') == std::string::npos) && ::access(prepare_cmd_style_fn.c_str(), X_OK))
+        {
+            const auto * e = ::environ;
+            while ((e != nullptr) && (*e != nullptr) && !boost::starts_with(*e, "PATH="))
+                e++;
+
+            if ((e != nullptr) && (*e != nullptr))
+            {
+                std::vector<std::string> path;
+                //the beginning of the string contains "PATH="
+                boost::split(path, (*e) + 5, boost::is_any_of(":"));
+
+                for (const std::string & pp : path)
+                {
+                    auto p = pp + "/" + exe;
+                    if (!::access(p.c_str(), X_OK))
+                    {
+                        prepare_cmd_style_fn = p;
+                        break;
+                    }
+                }
+            }
+        }
+        exe = prepare_cmd_style_fn.c_str();
+    }
 
     std::error_code _ec;
     std::string _msg;
@@ -265,6 +315,7 @@ public:
     Sequence & seq;
     const char * exe      = nullptr;
     char *const* cmd_line = nullptr;
+    bool cmd_style = false;
     char **env      = ::environ;
     pid_t pid = -1;
     std::shared_ptr<std::atomic<int>> exit_status = std::make_shared<std::atomic<int>>(still_active);
@@ -277,6 +328,13 @@ public:
     }
     void set_error(const std::error_code &ec, const std::string &msg) {set_error(ec, msg.c_str());};
 
+    std::vector<int> get_used_handles() const 
+    {
+        if (_pipe_sink == -1)
+            return {};
+        else
+            return {_pipe_sink};
+    };
 };
 
 template<typename Sequence>
@@ -285,6 +343,8 @@ child executor<Sequence>::invoke(boost::mpl::true_, boost::mpl::false_) //ignore
     boost::fusion::for_each(seq, call_on_setup(*this));
     if (_ec)
         return child();
+    if (cmd_style)
+        prepare_cmd_style();
 
     this->pid = ::fork();
     if (pid == -1)
@@ -312,65 +372,87 @@ child executor<Sequence>::invoke(boost::mpl::true_, boost::mpl::false_) //ignore
 template<typename Sequence>
 child executor<Sequence>::invoke(boost::mpl::false_, boost::mpl::false_)
 {
-    int p[2];
-    if (::pipe(p)  == -1)
     {
-        set_error(::boost::process::detail::get_last_error(), "pipe(2) failed");
-        return child();
-    }
-    if (::fcntl(p[1], F_SETFD, FD_CLOEXEC) == -1)
-    {
-        set_error(::boost::process::detail::get_last_error(), "fcntl(2) failed");
-        return child();
-    }
-    _ec.clear();
-    boost::fusion::for_each(seq, call_on_setup(*this));
+        struct pipe_guard
+        {
+            int p[2];
+            pipe_guard() : p{-1,-1} {}
 
+            ~pipe_guard()
+            {
+                if (p[0] != -1)
+                    ::close(p[0]);
+                if (p[1] != -1)
+                    ::close(p[1]);
+            }
+        } p{};
+
+        if (::pipe(p.p) == -1)
+        {
+            set_error(::boost::process::detail::get_last_error(), "pipe(2) failed");
+            return child();
+        }
+        if (::fcntl(p.p[1], F_SETFD, FD_CLOEXEC) == -1)
+        {
+            auto err = ::boost::process::detail::get_last_error();
+            set_error(err, "fcntl(2) failed");//this might throw, so we need to be sure our pipe is safe.
+            return child();
+        }
+        _ec.clear();
+        boost::fusion::for_each(seq, call_on_setup(*this));
+
+        if (_ec)
+        {
+            boost::fusion::for_each(seq, call_on_error(*this, _ec));
+            return child();
+        }
+
+        if (cmd_style)
+            prepare_cmd_style();
+
+        this->pid = ::fork();
+        if (pid == -1)
+        {
+            _ec = boost::process::detail::get_last_error();
+            _msg = "fork() failed";
+            boost::fusion::for_each(seq, call_on_fork_error(*this, _ec));
+            boost::fusion::for_each(seq, call_on_error(*this, _ec));
+            return child();
+        }
+        else if (pid == 0)
+        {
+            _pipe_sink = p.p[1];
+            ::close(p.p[0]);
+
+            boost::fusion::for_each(seq, call_on_exec_setup(*this));
+            ::execve(exe, cmd_line, env);
+            _ec = boost::process::detail::get_last_error();
+            _msg = "execve failed";
+            boost::fusion::for_each(seq, call_on_exec_error(*this, _ec));
+
+            _write_error(_pipe_sink);
+            ::close(p.p[1]);
+
+            _exit(EXIT_FAILURE);
+            return child();
+        }
+
+        ::close(p.p[1]);
+        p.p[1] = -1;
+        _read_error(p.p[0]);
+
+    }
     if (_ec)
     {
+        //if an error occurred we need to reap the child process
+        ::waitpid(this->pid, nullptr, WNOHANG);
         boost::fusion::for_each(seq, call_on_error(*this, _ec));
         return child();
     }
 
-    this->pid = ::fork();
-    if (pid == -1)
-    {
-        _ec = boost::process::detail::get_last_error();
-        _msg = "fork() failed";
-        boost::fusion::for_each(seq, call_on_fork_error(*this, _ec));
-        boost::fusion::for_each(seq, call_on_error(*this, _ec));
-
-        return child();
-    }
-    else if (pid == 0)
-    {
-        _pipe_sink = p[1];
-        ::close(p[0]);
-
-        boost::fusion::for_each(seq, call_on_exec_setup(*this));
-
-        ::execve(exe, cmd_line, env);
-        _ec = boost::process::detail::get_last_error();
-        _msg = "execve failed";
-        boost::fusion::for_each(seq, call_on_exec_error(*this, _ec));
-
-        _write_error(p[1]);
-
-        _exit(EXIT_FAILURE);
-        return child();
-    }
-
     child c(child_handle(pid), exit_status);
 
-
-    ::close(p[1]);
-    _read_error(p[0]);
-    ::close(p[0]);
-
-    if (_ec)
-        boost::fusion::for_each(seq, call_on_error(*this, _ec));
-    else
-        boost::fusion::for_each(seq, call_on_success(*this));
+    boost::fusion::for_each(seq, call_on_success(*this));
 
     if (_ec)
     {
@@ -390,7 +472,6 @@ child executor<Sequence>::invoke(boost::mpl::true_, boost::mpl::true_) //ignore
     boost::fusion::for_each(seq, call_on_setup(*this));
     if (_ec)
         return child();
-
     this->pid = ::vfork();
     if (pid == -1)
     {
@@ -406,7 +487,6 @@ child executor<Sequence>::invoke(boost::mpl::true_, boost::mpl::true_) //ignore
         boost::fusion::for_each(seq, call_on_exec_error(*this, ec));
         _exit(EXIT_FAILURE);
     }
-
     child c(child_handle(pid), exit_status);
 
     boost::fusion::for_each(seq, call_on_success(*this));
@@ -425,6 +505,9 @@ child executor<Sequence>::invoke(boost::mpl::false_, boost::mpl::true_)
         return child();
     }
     _ec.clear();
+    if (cmd_style)
+        this->prepare_cmd_style();
+
     this->pid = ::vfork();
     if (pid == -1)
     {
@@ -440,6 +523,7 @@ child executor<Sequence>::invoke(boost::mpl::false_, boost::mpl::true_)
         boost::fusion::for_each(seq, call_on_exec_setup(*this));
 
         ::execve(exe, cmd_line, env);
+
         _ec = boost::process::detail::get_last_error();
         _msg = "execve failed";
         boost::fusion::for_each(seq, call_on_exec_error(*this, _ec));
@@ -447,15 +531,18 @@ child executor<Sequence>::invoke(boost::mpl::false_, boost::mpl::true_)
         _exit(EXIT_FAILURE);
         return child();
     }
+    child c(child_handle(pid), exit_status);
 
     check_error(has_error_handler());
 
-    child c(child_handle(pid), exit_status);
-
 
 
     if (_ec)
+    {
+        ::waitpid(this->pid, nullptr, WNOHANG);
         boost::fusion::for_each(seq, call_on_error(*this, _ec));
+        return child();
+    }
     else
         boost::fusion::for_each(seq, call_on_success(*this));
 

include/boost/process/detail/posix/fd.hpp

@@ -12,11 +12,13 @@
 
 #include <boost/process/detail/posix/handler.hpp>
 #include <unistd.h>
+#include <boost/process/detail/used_handles.hpp>
+#include <array>
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
 
-struct close_fd_ : handler_base_ext
+struct close_fd_ : handler_base_ext, ::boost::process::detail::uses_handles
 {
     close_fd_(int fd) : fd_(fd) {}
 
@@ -27,12 +29,15 @@ struct close_fd_ : handler_base_ext
             e.set_error(::boost::process::detail::get_last_error(), "close() failed");
     }
 
+    int get_used_handles() {return fd_;}
+
+
 private:
     int fd_;
 };
 
 template <class Range>
-struct close_fds_ : handler_base_ext
+struct close_fds_ : handler_base_ext, ::boost::process::detail::uses_handles
 {
 public:
     close_fds_(const Range &fds) : fds_(fds) {}
@@ -48,6 +53,8 @@ public:
             }
     }
 
+    Range& get_used_handles() {return fds_;}
+
 private:
     Range fds_;
 };
@@ -55,7 +62,7 @@ private:
 
 
 template <class FileDescriptor>
-struct bind_fd_ : handler_base_ext
+struct bind_fd_ : handler_base_ext, ::boost::process::detail::uses_handles
 {
 public:
     bind_fd_(int id, const FileDescriptor &fd) : id_(id), fd_(fd) {}
@@ -67,6 +74,9 @@ public:
              e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
     }
 
+    std::array<int, 2> get_used_handles() {return {id_, fd_};}
+
+
 private:
     int id_;
     FileDescriptor fd_;

include/boost/process/detail/posix/file_descriptor.hpp

@@ -1,76 +1,89 @@
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_DETAIL_POSIX_FILE_DESCRIPTOR_HPP_
-#define BOOST_PROCESS_DETAIL_POSIX_FILE_DESCRIPTOR_HPP_
-
-#include <fcntl.h>
-#include <string>
-#include <boost/filesystem/path.hpp>
-
-namespace boost { namespace process { namespace detail { namespace posix {
-
-struct file_descriptor
-{
-    enum mode_t
-    {
-        read  = 1,
-        write = 2,
-        read_write = 3
-    };
-
-
-    file_descriptor() = default;
-    explicit file_descriptor(const boost::filesystem::path& p, mode_t mode = read_write)
-        : file_descriptor(p.native(), mode)
-    {
-    }
-
-    explicit file_descriptor(const std::string & path , mode_t mode = read_write)
-        : file_descriptor(path.c_str(), mode) {}
-
-
-    explicit file_descriptor(const char*    path, mode_t mode = read_write)
-        : _handle(create_file(path, mode))
-    {
-
-    }
-
-    file_descriptor(const file_descriptor & ) = delete;
-    file_descriptor(file_descriptor && ) = default;
-
-    file_descriptor& operator=(const file_descriptor & ) = delete;
-    file_descriptor& operator=(file_descriptor && ) = default;
-
-    ~file_descriptor()
-    {
-        if (_handle != -1)
-            ::close(_handle);
-    }
-
-    int handle() const { return _handle;}
-
-private:
-    static int create_file(const char* name, mode_t mode )
-    {
-        switch(mode)
-        {
-        case read:
-            return ::open(name, O_RDONLY);
-        case write:
-            return ::open(name, O_WRONLY | O_CREAT, 0660);
-        case read_write:
-            return ::open(name, O_RDWR | O_CREAT, 0660);
-        default:
-            return -1;
-        }
-    }
-
-    int _handle = -1;
-};
-
-}}}}
-
-#endif /* BOOST_PROCESS_DETAIL_WINDOWS_FILE_DESCRIPTOR_HPP_ */
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_DETAIL_POSIX_FILE_DESCRIPTOR_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_FILE_DESCRIPTOR_HPP_
+
+#include <fcntl.h>
+#include <string>
+#include <boost/process/filesystem.hpp>
+#include <boost/core/exchange.hpp>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+struct file_descriptor
+{
+    enum mode_t
+    {
+        read  = 1,
+        write = 2,
+        read_write = 3
+    };
+
+
+    file_descriptor() = default;
+    explicit file_descriptor(const boost::process::filesystem::path& p, mode_t mode = read_write)
+        : file_descriptor(p.native(), mode)
+    {
+    }
+
+    explicit file_descriptor(const std::string & path , mode_t mode = read_write)
+        : file_descriptor(path.c_str(), mode) {}
+
+
+    explicit file_descriptor(const char*    path, mode_t mode = read_write)
+        : _handle(create_file(path, mode))
+    {
+
+    }
+
+    file_descriptor(const file_descriptor & ) = delete;
+    file_descriptor(file_descriptor &&other)
+        : _handle(boost::exchange(other._handle, -1))
+    {
+    }
+
+    file_descriptor& operator=(const file_descriptor & ) = delete;
+    file_descriptor& operator=(file_descriptor &&other)
+    {
+        if (this != &other)
+        {
+            if (_handle != -1)
+                ::close(_handle);
+            _handle = boost::exchange(other._handle, -1);
+        }
+        return *this;
+    }
+
+    ~file_descriptor()
+    {
+        if (_handle != -1)
+            ::close(_handle);
+    }
+
+    int handle() const { return _handle;}
+
+private:
+    static int create_file(const char* name, mode_t mode )
+    {
+        switch(mode)
+        {
+        case read:
+            return ::open(name, O_RDONLY);
+        case write:
+            return ::open(name, O_WRONLY | O_CREAT, 0660);
+        case read_write:
+            return ::open(name, O_RDWR | O_CREAT, 0660);
+        default:
+            return -1;
+        }
+    }
+
+    int _handle = -1;
+};
+
+}}}}
+
+#endif /* BOOST_PROCESS_DETAIL_WINDOWS_FILE_DESCRIPTOR_HPP_ */

include/boost/process/detail/posix/file_in.hpp

@@ -1,40 +1,46 @@
-// Copyright (c) 2006, 2007 Julio M. Merino Vidal
-// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
-// Copyright (c) 2009 Boris Schaeling
-// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
-// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_DETAIL_POSIX_FILE_IN_HPP
-#define BOOST_PROCESS_DETAIL_POSIX_FILE_IN_HPP
-
-#include <boost/process/pipe.hpp>
-#include <boost/process/detail/posix/handler.hpp>
-#include <boost/process/detail/posix/file_descriptor.hpp>
-#include <cstdio>
-#include <unistd.h>
-
-namespace boost { namespace process { namespace detail { namespace posix {
-
-struct file_in : handler_base_ext
-{
-    file_descriptor file;
-    int handle = file.handle();
-
-    template<typename T>
-    file_in(T&& t) : file(std::forward<T>(t)) {}
-    file_in(FILE * f) : handle(fileno(f)) {}
-
-    template <class WindowsExecutor>
-    void on_exec_setup(WindowsExecutor &e) const
-    {
-        if (::dup2(handle, STDIN_FILENO) == -1)
-             e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-    }
-};
-
-}}}}
-
-#endif
+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_DETAIL_POSIX_FILE_IN_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_FILE_IN_HPP
+
+#include <boost/process/pipe.hpp>
+#include <boost/process/detail/posix/handler.hpp>
+#include <boost/process/detail/posix/file_descriptor.hpp>
+#include <boost/process/detail/used_handles.hpp>
+#include <cstdio>
+#include <unistd.h>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+struct file_in : handler_base_ext, ::boost::process::detail::uses_handles
+{
+    file_descriptor file;
+    int handle = file.handle();
+
+    std::array<int, 2> get_used_handles()
+    {
+        return {{STDIN_FILENO, handle}};
+    }
+
+    template<typename T>
+    file_in(T&& t) : file(std::forward<T>(t)) {}
+    file_in(FILE * f) : handle(fileno(f)) {}
+
+    template <class WindowsExecutor>
+    void on_exec_setup(WindowsExecutor &e) const
+    {
+        if (::dup2(handle, STDIN_FILENO) == -1)
+             e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+    }
+};
+
+}}}}
+
+#endif

include/boost/process/detail/posix/file_out.hpp

@@ -1,65 +1,73 @@
-// Copyright (c) 2006, 2007 Julio M. Merino Vidal
-// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
-// Copyright (c) 2009 Boris Schaeling
-// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
-// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_POSIX_FILE_OUT_HPP
-#define BOOST_PROCESS_POSIX_FILE_OUT_HPP
-
-#include <boost/process/detail/posix/handler.hpp>
-#include <boost/process/detail/posix/file_descriptor.hpp>
-
-#include <unistd.h>
-namespace boost { namespace process { namespace detail { namespace posix {
-
-template<int p1, int p2>
-struct file_out : handler_base_ext
-{
-    file_descriptor file;
-    int handle = file.handle();
-
-    template<typename T>
-    file_out(T&& t) : file(std::forward<T>(t), file_descriptor::write), handle(file.handle()) {}
-    file_out(FILE * f) : handle(fileno(f)) {}
-
-
-    template <typename Executor>
-    void on_exec_setup(Executor &e) const;
-};
-
-template<>
-template<typename Executor>
-void file_out<1,-1>::on_exec_setup(Executor &e) const
-{
-    if (::dup2(handle, STDOUT_FILENO) == -1)
-         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-}
-
-template<>
-template<typename Executor>
-void file_out<2,-1>::on_exec_setup(Executor &e) const
-{
-    if (::dup2(handle, STDERR_FILENO) == -1)
-         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-}
-
-template<>
-template<typename Executor>
-void file_out<1,2>::on_exec_setup(Executor &e) const
-{
-    if (::dup2(handle, STDOUT_FILENO) == -1)
-         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-
-    if (::dup2(handle, STDERR_FILENO) == -1)
-         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-
-}
-
-}}}}
-
-#endif
+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_POSIX_FILE_OUT_HPP
+#define BOOST_PROCESS_POSIX_FILE_OUT_HPP
+
+#include <boost/process/detail/posix/handler.hpp>
+#include <boost/process/detail/posix/file_descriptor.hpp>
+#include <boost/process/detail/used_handles.hpp>
+#include <unistd.h>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+template<int p1, int p2>
+struct file_out : handler_base_ext, ::boost::process::detail::uses_handles
+{
+    file_descriptor file;
+    int handle = file.handle();
+
+    template<typename T>
+    file_out(T&& t) : file(std::forward<T>(t), file_descriptor::write), handle(file.handle()) {}
+    file_out(FILE * f) : handle(fileno(f)) {}
+
+    std::array<int, 3> get_used_handles()
+    {
+        const auto pp1 = p1 != -1 ? p1 : p2;
+        const auto pp2 = p2 != -1 ? p2 : p1;
+
+        return {handle, pp1, pp2};
+    }
+
+    template <typename Executor>
+    void on_exec_setup(Executor &e) const;
+};
+
+template<>
+template<typename Executor>
+void file_out<1,-1>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(handle, STDOUT_FILENO) == -1)
+         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+}
+
+template<>
+template<typename Executor>
+void file_out<2,-1>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(handle, STDERR_FILENO) == -1)
+         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+}
+
+template<>
+template<typename Executor>
+void file_out<1,2>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(handle, STDOUT_FILENO) == -1)
+         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+
+    if (::dup2(handle, STDERR_FILENO) == -1)
+         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+
+}
+
+}}}}
+
+#endif

include/boost/process/detail/posix/group_handle.hpp

@@ -6,14 +6,13 @@
 #ifndef BOOST_PROCESS_DETAIL_POSIX_GROUP_HPP_
 #define BOOST_PROCESS_DETAIL_POSIX_GROUP_HPP_
 
+#include <boost/process/detail/config.hpp>
 #include <boost/process/detail/posix/child_handle.hpp>
 #include <system_error>
 #include <unistd.h>
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
-
-
 struct group_handle
 {
     pid_t grp = -1;
@@ -26,7 +25,6 @@ struct group_handle
     {
     }
 
-
      group_handle() = default;
 
     ~group_handle() = default;
@@ -38,14 +36,13 @@ struct group_handle
     group_handle &operator=(const group_handle & c) = delete;
     group_handle &operator=(group_handle && c)
     {
-
         grp = c.grp;
         c.grp = -1;
         return *this;
     }
 
     void add(handle_t proc)
-    {   
+    {
         if (::setpgid(proc, grp))
             throw_last_error();
     }
@@ -59,26 +56,17 @@ struct group_handle
     {
         return ::getpgid(proc) == grp;
     }
-    bool has(handle_t proc, std::error_code & ec) noexcept
+    bool has(handle_t proc, std::error_code &) noexcept
     {
         return ::getpgid(proc) == grp;
-
     }
 
     bool valid() const
     {
         return grp != -1;
     }
-
 };
 
-inline void terminate(group_handle &p)
-{
-    if (::killpg(p.grp, SIGKILL) == -1)
-        boost::process::detail::throw_last_error("killpg(2) failed");
-    p.grp = -1;
-}
-
 inline  void terminate(group_handle &p, std::error_code &ec) noexcept
 {
     if (::killpg(p.grp, SIGKILL) == -1)
@@ -89,15 +77,18 @@ inline  void terminate(group_handle &p, std::error_code &ec) noexcept
     p.grp = -1;
 }
 
+inline void terminate(group_handle &p)
+{
+    std::error_code ec;
+    terminate(p, ec);
+    boost::process::detail::throw_error(ec, "killpg(2) failed in terminate");
+}
 
 inline bool in_group()
 {
     return true;
 }
 
-
-
 }}}}
 
-
 #endif /* BOOST_PROCESS_DETAIL_WINDOWS_GROUP_HPP_ */

include/boost/process/detail/posix/group_ref.hpp

@@ -28,7 +28,7 @@ struct group_ref : handler_base_ext
     {}
 
     template <class Executor>
-    void on_exec_setup(Executor& exec) const
+    void on_exec_setup(Executor&) const
     {
         if (grp.grp == -1)
             ::setpgid(0, 0);

include/boost/process/detail/posix/handler.hpp

@@ -1,79 +1,74 @@
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_DETAIL_POSIX_HANDLER_HPP_
-#define BOOST_PROCESS_DETAIL_POSIX_HANDLER_HPP_
-
-#include <boost/process/detail/handler_base.hpp>
-
-namespace boost { namespace process { namespace detail { namespace posix {
-
-//does not extend anything.
-struct handler_base_ext : handler_base 
-{
-    template<typename Executor>
-    void on_fork_error  (Executor &, const std::error_code&) const {}
-
-    template<typename Executor>
-    void on_exec_setup  (Executor &) const {}
-
-    template<typename Executor>
-    void on_exec_error  (Executor &, const std::error_code&) const {}
-
-};
-
-
-template <class Handler>
-struct on_fork_error_ : handler_base_ext
-{
-    explicit on_fork_error_(Handler handler) : handler_(handler) {}
-
-    template <class Executor>
-    void on_fork_error(Executor &e) const
-    {
-        handler_(e);
-    }
-private:
-    Handler handler_;
-};
-
-
-template <class Handler>
-struct on_exec_setup_ : handler_base_ext
-{
-    explicit on_exec_setup_(Handler handler) : handler_(handler) {}
-
-    template <class Executor>
-    void on_exec_setup(Executor &e) const
-    {
-        handler_(e);
-    }
-private:
-    Handler handler_;
-};
-
-template <class Handler>
-struct on_exec_error_ : handler_base_ext
-{
-    explicit on_exec_error_(Handler handler) : handler_(handler) {}
-
-    template <class Executor>
-    void on_exec_error(Executor &e) const
-    {
-        handler_(e);
-    }
-private:
-    Handler handler_;
-};
-
-
-
-
-
-}}}}
-
-
-
-#endif /* BOOST_PROCESS_DETAIL_POSIX_HANDLER_HPP_ */
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_DETAIL_POSIX_HANDLER_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_HANDLER_HPP_
+
+#include <boost/process/detail/handler_base.hpp>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+//does not extend anything.
+struct handler_base_ext : handler_base 
+{
+    template<typename Executor>
+    void on_fork_error  (Executor &, const std::error_code&) const {}
+
+    template<typename Executor>
+    void on_exec_setup  (Executor &) const {}
+
+    template<typename Executor>
+    void on_exec_error  (Executor &, const std::error_code&) const {}
+};
+
+
+template <class Handler>
+struct on_fork_error_ : handler_base_ext
+{
+    explicit on_fork_error_(Handler handler) : handler_(handler) {}
+
+    template <class Executor>
+    void on_fork_error(Executor &e, const std::error_code &ec) const
+    {
+        handler_(e, ec);
+    }
+private:
+    Handler handler_;
+};
+
+
+template <class Handler>
+struct on_exec_setup_ : handler_base_ext
+{
+    explicit on_exec_setup_(Handler handler) : handler_(handler) {}
+
+    template <class Executor>
+    void on_exec_setup(Executor &e) const
+    {
+        handler_(e);
+    }
+private:
+    Handler handler_;
+};
+
+template <class Handler>
+struct on_exec_error_ : handler_base_ext
+{
+    explicit on_exec_error_(Handler handler) : handler_(handler) {}
+
+    template <class Executor>
+    void on_exec_error(Executor &e, const std::error_code &ec) const
+    {
+        handler_(e, ec);
+    }
+private:
+    Handler handler_;
+};
+
+}}}}
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_POSIX_HANDLER_HPP_ */

include/boost/process/detail/posix/handles.hpp

@@ -0,0 +1,148 @@
+// Copyright (c) 2019 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_DETAIL_POSIX_HANDLES_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_HANDLES_HPP_
+
+#include <vector>
+#include <system_error>
+#include <dirent.h>
+#include <sys/stat.h>
+#include <algorithm>
+#include <memory>
+#include <cstdlib>
+#include <boost/process/detail/posix/handler.hpp>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+
+using native_handle_type = int;
+
+inline std::vector<native_handle_type> get_handles(std::error_code & ec)
+{
+    std::vector<native_handle_type> res;
+
+    std::unique_ptr<DIR, void(*)(DIR*)> dir{::opendir("/dev/fd"), +[](DIR* p){::closedir(p);}};
+    if (!dir)
+    {
+        ec = ::boost::process::detail::get_last_error();
+        return {};
+    }
+    else
+        ec.clear();
+
+    auto my_fd = ::dirfd(dir.get());
+
+    struct ::dirent * ent_p;
+
+    while ((ent_p = readdir(dir.get())) != nullptr)
+    {
+        if (ent_p->d_name[0] == '.')
+            continue;
+
+        const auto conv = std::atoi(ent_p->d_name);
+        if (conv == 0 && (ent_p->d_name[0] != '0' && ent_p->d_name[1] != '\0'))
+            continue;
+
+        if (conv == my_fd)
+            continue;
+
+        res.push_back(conv);
+    }
+    return res;
+}
+
+inline std::vector<native_handle_type> get_handles()
+{
+    std::error_code ec;
+
+    auto res = get_handles(ec);
+    if (ec)
+        boost::process::detail::throw_error(ec, "open_dir(\"/dev/fd\") failed");
+
+    return res;
+}
+
+
+inline bool is_stream_handle(native_handle_type handle, std::error_code & ec)
+{
+    struct ::stat stat_;
+
+    if (::fstat(handle, &stat_) != 0)
+    {
+        ec = ::boost::process::detail::get_last_error();
+    }
+    else
+        ec.clear();
+
+    return S_ISCHR  (stat_.st_mode)  //This macro returns non-zero if the file is a character special file (a device like a terminal).
+        || S_ISBLK  (stat_.st_mode) // This macro returns non-zero if the file is a block special file (a device like a disk).
+        || S_ISREG  (stat_.st_mode) // This macro returns non-zero if the file is a regular file.
+        || S_ISFIFO (stat_.st_mode) // This macro returns non-zero if the file is a FIFO special file, or a pipe. See section 15. Pipes and FIFOs.
+        || S_ISSOCK (stat_.st_mode) ;// This macro returns non-zero if the file is a socket. See section 16. Sockets.;
+}
+
+
+inline bool is_stream_handle(native_handle_type handle)
+{
+    std::error_code ec;
+    auto res = is_stream_handle(handle, ec);
+    if (ec)
+        boost::process::detail::throw_error(ec, "fstat() failed");
+
+    return res;
+}
+
+struct limit_handles_ : handler_base_ext
+{
+    limit_handles_() {}
+    ~limit_handles_() {}
+    mutable std::vector<int> used_handles;
+
+    template<typename Executor>
+    void on_setup(Executor & exec) const
+    {
+        used_handles = get_used_handles(exec);
+    }
+
+    template<typename Executor>
+    void on_exec_setup(Executor & exec) const
+    {
+        auto dir = ::opendir("/dev/fd");
+        if (!dir)
+        {
+            exec.set_error(::boost::process::detail::get_last_error(), "opendir(\"/dev/fd\")");
+            return;
+        }
+
+        auto my_fd = ::dirfd(dir);
+        struct ::dirent * ent_p;
+
+        while ((ent_p = readdir(dir)) != nullptr)
+        {
+            if (ent_p->d_name[0] == '.')
+                continue;
+
+            const auto conv = std::atoi(ent_p->d_name);
+
+            if ((conv == my_fd) || (conv == -1))
+                continue;
+
+            if (std::find(used_handles.begin(), used_handles.end(), conv) != used_handles.end())
+                continue;
+
+            if (::close(conv) != 0)
+            {
+                exec.set_error(::boost::process::detail::get_last_error(), "close() failed");
+                return;
+            }
+        }
+        ::closedir(dir);
+    }
+};
+
+}}}}
+
+#endif //PROCESS_HANDLES_HPP

include/boost/process/detail/posix/io_context_ref.hpp

@@ -0,0 +1,125 @@
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_POSIX_IO_CONTEXT_REF_HPP_
+#define BOOST_PROCESS_POSIX_IO_CONTEXT_REF_HPP_
+
+#include <boost/process/detail/posix/handler.hpp>
+#include <boost/process/detail/posix/async_handler.hpp>
+#include <boost/asio/io_context.hpp>
+
+#include <boost/fusion/algorithm/iteration/for_each.hpp>
+#include <boost/fusion/algorithm/transformation/filter_if.hpp>
+#include <boost/fusion/algorithm/transformation/transform.hpp>
+#include <boost/fusion/view/transform_view.hpp>
+#include <boost/fusion/container/vector/convert.hpp>
+
+
+#include <boost/process/detail/posix/sigchld_service.hpp>
+#include <boost/process/detail/posix/is_running.hpp>
+
+#include <functional>
+#include <type_traits>
+#include <memory>
+#include <vector>
+#include <sys/wait.h>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+template<typename Executor>
+struct on_exit_handler_transformer
+{
+    Executor & exec;
+    on_exit_handler_transformer(Executor & exec) : exec(exec) {}
+    template<typename Sig>
+    struct result;
+
+    template<typename T>
+    struct result<on_exit_handler_transformer<Executor>(T&)>
+    {
+        typedef typename T::on_exit_handler_t type;
+    };
+
+    template<typename T>
+    auto operator()(T& t) const -> typename T::on_exit_handler_t
+    {
+        return t.on_exit_handler(exec);
+    }
+};
+
+template<typename Executor>
+struct async_handler_collector
+{
+    Executor & exec;
+    std::vector<std::function<void(int, const std::error_code & ec)>> &handlers;
+
+
+    async_handler_collector(Executor & exec,
+            std::vector<std::function<void(int, const std::error_code & ec)>> &handlers)
+                : exec(exec), handlers(handlers) {}
+
+    template<typename T>
+    void operator()(T & t) const
+    {
+        handlers.push_back(t.on_exit_handler(exec));
+    }
+};
+
+//Also set's up waiting for the exit, so it can close async stuff.
+struct io_context_ref : handler_base_ext
+{
+    io_context_ref(boost::asio::io_context & ios) : ios(ios)
+    {
+
+    }
+    boost::asio::io_context &get() {return ios;};
+    
+    template <class Executor>
+    void on_success(Executor& exec)
+    {
+        ios.notify_fork(boost::asio::io_context::fork_parent);
+        //must be on the heap, so I can move it into the lambda.
+        auto asyncs = boost::fusion::filter_if<
+                        is_async_handler<
+                        typename std::remove_reference< boost::mpl::_ > ::type
+                        >>(exec.seq);
+
+        //ok, check if there are actually any.
+        if (boost::fusion::empty(asyncs))
+            return;
+
+        std::vector<std::function<void(int, const std::error_code & ec)>> funcs;
+        funcs.reserve(boost::fusion::size(asyncs));
+        boost::fusion::for_each(asyncs, async_handler_collector<Executor>(exec, funcs));
+
+        auto & es = exec.exit_status;
+
+        auto wh = [funcs, es](int val, const std::error_code & ec)
+                {
+                    es->store(val);
+                    for (auto & func : funcs)
+                        func(::boost::process::detail::posix::eval_exit_status(val), ec);
+                };
+
+        sigchld_service.async_wait(exec.pid, std::move(wh));
+    }
+
+    template<typename Executor>
+    void on_setup (Executor &) const {/*ios.notify_fork(boost::asio::io_context::fork_prepare);*/}
+
+    template<typename Executor>
+    void on_exec_setup  (Executor &) const {/*ios.notify_fork(boost::asio::io_context::fork_child);*/}
+
+    template <class Executor>
+    void on_error(Executor&, const std::error_code &) const {/*ios.notify_fork(boost::asio::io_context::fork_parent);*/}
+
+private:
+    boost::asio::io_context &ios;
+    boost::process::detail::posix::sigchld_service &sigchld_service = boost::asio::use_service<boost::process::detail::posix::sigchld_service>(ios);
+};
+
+}}}}
+
+#endif /* BOOST_PROCESS_WINDOWS_IO_CONTEXT_REF_HPP_ */

include/boost/process/detail/posix/io_service_ref.hpp

@@ -1,162 +0,0 @@
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_POSIX_IO_SERVICE_REF_HPP_
-#define BOOST_PROCESS_POSIX_IO_SERVICE_REF_HPP_
-
-#include <boost/process/detail/posix/handler.hpp>
-#include <boost/process/detail/posix/async_handler.hpp>
-#include <boost/asio/io_service.hpp>
-#include <boost/asio/signal_set.hpp>
-
-#include <boost/fusion/algorithm/iteration/for_each.hpp>
-#include <boost/fusion/algorithm/transformation/filter_if.hpp>
-#include <boost/fusion/algorithm/transformation/transform.hpp>
-#include <boost/fusion/view/transform_view.hpp>
-#include <boost/fusion/container/vector/convert.hpp>
-
-
-#include <functional>
-#include <type_traits>
-#include <memory>
-#include <vector>
-#include <sys/wait.h>
-
-
-namespace boost { namespace process { namespace detail { namespace posix {
-
-template<typename Executor>
-struct on_exit_handler_transformer
-{
-    Executor & exec;
-    on_exit_handler_transformer(Executor & exec) : exec(exec) {}
-    template<typename Sig>
-    struct result;
-
-    template<typename T>
-    struct result<on_exit_handler_transformer<Executor>(T&)>
-    {
-        typedef typename T::on_exit_handler_t type;
-    };
-
-    template<typename T>
-    auto operator()(T& t) const -> typename T::on_exit_handler_t
-    {
-        return t.on_exit_handler(exec);
-    }
-};
-
-template<typename Executor>
-struct async_handler_collector
-{
-    Executor & exec;
-    std::vector<std::function<void(int, const std::error_code & ec)>> &handlers;
-
-
-    async_handler_collector(Executor & exec,
-            std::vector<std::function<void(int, const std::error_code & ec)>> &handlers)
-                : exec(exec), handlers(handlers) {}
-
-    template<typename T>
-    void operator()(T & t) const
-    {
-        handlers.push_back(t.on_exit_handler(exec));
-    };
-};
-
-//Also set's up waiting for the exit, so it can close async stuff.
-struct io_service_ref : handler_base_ext
-{
-    io_service_ref(boost::asio::io_service & ios) : ios(ios)
-    {
-
-    }
-    boost::asio::io_service &get() {return ios;};
-    template <class Executor>
-    void on_setup(Executor& exec) const
-    {
-          //must be on the heap so I can move it into the lambda.
-          auto asyncs = boost::fusion::filter_if<
-                          is_async_handler<
-                          typename std::remove_reference< boost::mpl::_ > ::type
-                          >>(exec.seq);
-
-          //ok, check if there are actually any.
-          if (boost::fusion::empty(asyncs))
-          {
-                return;
-          }
-          std::vector<std::function<void(int, const std::error_code & ec)>> funcs;
-          funcs.reserve(boost::fusion::size(asyncs));
-          boost::fusion::for_each(asyncs, async_handler_collector<Executor>(exec, funcs));
-
-
-
-          wait_handler wh(std::move(funcs), ios, exec.exit_status);
-
-          auto signal_p = wh.signal_.get();
-          signal_p->async_wait(std::move(wh));
-    }
-    struct wait_handler
-    {
-        std::shared_ptr<boost::asio::signal_set> signal_;
-        std::vector<std::function<void(int, const std::error_code & ec)>> funcs;
-        std::shared_ptr<std::atomic<int>> exit_status;
-
-        wait_handler(const wait_handler & ) = default;
-        wait_handler(wait_handler && )      = default;
-        wait_handler(
-                std::vector<std::function<void(int, const std::error_code & ec)>> && funcs,
-                boost::asio::io_service & ios,
-                const std::shared_ptr<std::atomic<int>> &exit_status)
-            : signal_(new boost::asio::signal_set(ios, SIGCHLD)),
-              funcs(std::move(funcs)),
-              exit_status(exit_status)
-
-
-        {
-
-        }
-        void operator()(const boost::system::error_code & ec_in, int /*signal*/)
-        {
-            int status;
-            ::wait(&status);
-
-            std::error_code ec(ec_in.value(), std::system_category());
-            int val = WEXITSTATUS(status);
-            exit_status->store(val);
-
-            for (auto & func : funcs)
-                func(val, ec);
-        }
-
-    };
-
-    // Posix specific notifies
-    template <class PosixExecutor>
-    void on_fork_setup(PosixExecutor&) const
-    {
-        ios.notify_fork(boost::asio::io_service::fork_prepare);
-    }
-
-    template <class PosixExecutor>
-    void on_fork_success(PosixExecutor&) const
-    {
-        ios.notify_fork(boost::asio::io_service::fork_parent);
-    }
-
-    template <class PosixExecutor>
-    void on_exec_setup(PosixExecutor&) const
-    {
-        ios.notify_fork(boost::asio::io_service::fork_child);
-    }
-
-private:
-    boost::asio::io_service &ios;
-};
-
-}}}}
-
-#endif /* BOOST_PROCESS_WINDOWS_IO_SERVICE_REF_HPP_ */

include/boost/process/detail/posix/is_running.hpp

@@ -1,4 +1,4 @@
-// Copyright (c) 2106 Klemens D. Morgenstern
+// Copyright (c) 2016 Klemens D. Morgenstern
 //
 // Distributed under the Boost Software License, Version 1.0. (See accompanying
 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
@@ -13,40 +13,28 @@
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
+// Use the "stopped" state (WIFSTOPPED) to indicate "not terminated".
+// This bit arrangement of status codes is not guaranteed by POSIX, but (according to comments in
+// the glibc <bits/waitstatus.h> header) is the same across systems in practice.
+constexpr int still_active = 0x017f;
+static_assert(WIFSTOPPED(still_active), "Expected still_active to indicate WIFSTOPPED");
+static_assert(!WIFEXITED(still_active), "Expected still_active to not indicate WIFEXITED");
+static_assert(!WIFSIGNALED(still_active), "Expected still_active to not indicate WIFSIGNALED");
+static_assert(!WIFCONTINUED(still_active), "Expected still_active to not indicate WIFCONTINUED");
 
-constexpr static int still_active = 0x7F;
-static_assert(!WIFEXITED(still_active), "Internal Error");
-
-inline bool is_running(const child_handle &p, int & exit_code)
+inline bool is_running(int code)
 {
-    int status; 
-    auto ret = ::waitpid(p.pid, &status, WNOHANG|WUNTRACED);
-    
-    if (ret == -1)
-    {
-        if (errno != ECHILD) //because it no child is running, than this one isn't either, obviously.
-            ::boost::process::detail::throw_last_error("is_running error");
-
-        return false;
-    }
-    else if (ret == 0)
-        return true;
-    else //exited
-    {
-        if (WIFEXITED(status))
-            exit_code = status;
-        return false;
-    }
+    return !WIFEXITED(code) && !WIFSIGNALED(code);
 }
 
 inline bool is_running(const child_handle &p, int & exit_code, std::error_code &ec) noexcept
 {
     int status;
-    auto ret = ::waitpid(p.pid, &status, WNOHANG|WUNTRACED); 
-    
+    auto ret = ::waitpid(p.pid, &status, WNOHANG);
+
     if (ret == -1)
     {
-        if (errno != ECHILD) //because it no child is running, than this one isn't either, obviously.
+        if (errno != ECHILD) //because it no child is running, then this one isn't either, obviously.
             ec = ::boost::process::detail::get_last_error();
         return false;
     }
@@ -55,22 +43,36 @@ inline bool is_running(const child_handle &p, int & exit_code, std::error_code &
     else
     {
         ec.clear();
-        
-        if (WIFEXITED(status))
+
+        if (!is_running(status))
             exit_code = status;
-        
+
         return false;
     }
 }
 
-inline bool is_running(int code)
+inline bool is_running(const child_handle &p, int & exit_code)
 {
-    return !WIFEXITED(code);
+    std::error_code ec;
+    bool b = is_running(p, exit_code, ec);
+    boost::process::detail::throw_error(ec, "waitpid(2) failed in is_running");
+    return b;
 }
 
 inline int eval_exit_status(int code)
 {
-    return WEXITSTATUS(code);
+    if (WIFEXITED(code))
+    {
+        return WEXITSTATUS(code);
+    }
+    else if (WIFSIGNALED(code))
+    {
+        return WTERMSIG(code);
+    }
+    else
+    {
+        return code;
+    }
 }
 
 }}}}

include/boost/process/detail/posix/null_in.hpp

@@ -1,35 +1,43 @@
-// Copyright (c) 2006, 2007 Julio M. Merino Vidal
-// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
-// Copyright (c) 2009 Boris Schaeling
-// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
-// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_DETAIL_POSIX_NULL_IN_HPP
-#define BOOST_PROCESS_DETAIL_POSIX_NULL_IN_HPP
-
-#include <boost/process/pipe.hpp>
-#include <boost/process/detail/posix/handler.hpp>
-#include <boost/process/detail/posix/file_descriptor.hpp>
-#include <unistd.h>
-
-namespace boost { namespace process { namespace detail { namespace posix {
-
-struct null_in : handler_base_ext
-{
-    file_descriptor source{"/dev/null", file_descriptor::read};
-
-public:
-    template <class Executor>
-    void on_exec_setup(Executor &e) const
-    {
-        if (::dup2(source.handle(), STDIN_FILENO) == -1)
-             e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-    }
-};
-
-}}}}
-
-#endif
+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_DETAIL_POSIX_NULL_IN_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_NULL_IN_HPP
+
+#include <boost/process/pipe.hpp>
+#include <boost/process/detail/posix/handler.hpp>
+#include <boost/process/detail/posix/file_descriptor.hpp>
+#include <unistd.h>
+#include <boost/process/detail/used_handles.hpp>
+#include <array>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+struct null_in : handler_base_ext, ::boost::process::detail::uses_handles
+{
+    file_descriptor source{"/dev/null", file_descriptor::read};
+
+    std::array<int, 2> get_used_handles()
+    {
+        return {{STDIN_FILENO, source.handle()}};
+    }
+
+
+public:
+    template <class Executor>
+    void on_exec_setup(Executor &e) const
+    {
+        if (::dup2(source.handle(), STDIN_FILENO) == -1)
+             e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+    }
+};
+
+}}}}
+
+#endif

include/boost/process/detail/posix/null_out.hpp

@@ -1,58 +1,68 @@
-// Copyright (c) 2006, 2007 Julio M. Merino Vidal
-// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
-// Copyright (c) 2009 Boris Schaeling
-// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
-// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_POSIX_PIPE_OUT_HPP
-#define BOOST_PROCESS_POSIX_PIPE_OUT_HPP
-
-#include <boost/process/detail/posix/handler.hpp>
-#include <boost/process/detail/posix/file_descriptor.hpp>
-
-#include <unistd.h>
-namespace boost { namespace process { namespace detail { namespace posix {
-
-template<int p1, int p2>
-struct null_out : handler_base_ext
-{
-    file_descriptor sink{"/dev/null", file_descriptor::write};
-    
-    template <typename Executor>
-    void on_exec_setup(Executor &e) const;
-};
-
-template<>
-template<typename Executor>
-void null_out<1,-1>::on_exec_setup(Executor &e) const
-{
-    if (::dup2(sink.handle(), STDOUT_FILENO) == -1)
-         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-}
-
-template<>
-template<typename Executor>
-void null_out<2,-1>::on_exec_setup(Executor &e) const
-{
-    if (::dup2(sink.handle(), STDERR_FILENO) == -1)
-         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-}
-
-template<>
-template<typename Executor>
-void null_out<1,2>::on_exec_setup(Executor &e) const
-{
-    if (::dup2(sink.handle(), STDOUT_FILENO) == -1)
-         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-
-    if (::dup2(sink.handle(), STDERR_FILENO) == -1)
-         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-}
-
-}}}}
-
-#endif
+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_POSIX_PIPE_OUT_HPP
+#define BOOST_PROCESS_POSIX_PIPE_OUT_HPP
+
+#include <boost/process/detail/posix/handler.hpp>
+#include <boost/process/detail/posix/file_descriptor.hpp>
+#include <boost/process/detail/used_handles.hpp>
+#include <unistd.h>
+#include <array>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+template<int p1, int p2>
+struct null_out : handler_base_ext, ::boost::process::detail::uses_handles
+{
+    file_descriptor sink{"/dev/null", file_descriptor::write};
+    
+    template <typename Executor>
+    void on_exec_setup(Executor &e) const;
+
+    std::array<int, 3> get_used_handles()
+    {
+        const auto pp1 = p1 != -1 ? p1 : p2;
+        const auto pp2 = p2 != -1 ? p2 : p1;
+
+        return {sink.handle(), pp1, pp2};
+    }
+};
+
+template<>
+template<typename Executor>
+void null_out<1,-1>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(sink.handle(), STDOUT_FILENO) == -1)
+         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+}
+
+template<>
+template<typename Executor>
+void null_out<2,-1>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(sink.handle(), STDERR_FILENO) == -1)
+         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+}
+
+template<>
+template<typename Executor>
+void null_out<1,2>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(sink.handle(), STDOUT_FILENO) == -1)
+         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+
+    if (::dup2(sink.handle(), STDERR_FILENO) == -1)
+         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+}
+
+}}}}
+
+#endif

include/boost/process/detail/posix/on_exit.hpp

@@ -1,35 +1,48 @@
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_POSIX_ON_EXIT_HPP_
-#define BOOST_PROCESS_POSIX_ON_EXIT_HPP_
-
-#include <boost/process/detail/config.hpp>
-#include <boost/process/detail/handler_base.hpp>
-#include <boost/process/detail/posix/async_handler.hpp>
-#include <system_error>
-#include <functional>
-
-namespace boost { namespace process { namespace detail { namespace posix {
-
-struct on_exit_ : boost::process::detail::posix::async_handler
-{
-    std::function<void(int, const std::error_code&)> handler;
-    on_exit_(const std::function<void(int, const std::error_code&)> & handler) : handler(handler)
-    {
-
-    }
-
-    template<typename Executor>
-    std::function<void(int, const std::error_code&)> on_exit_handler(Executor & exec)
-    {
-        return handler;
-
-    };
-};
-
-
-}}}}
-#endif /* BOOST_PROCESS_POSIX_ON_EXIT_HPP_ */
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_POSIX_ON_EXIT_HPP_
+#define BOOST_PROCESS_POSIX_ON_EXIT_HPP_
+
+#include <boost/asio/execution.hpp>
+#include <boost/process/async.hpp>
+#include <boost/process/detail/config.hpp>
+#include <boost/process/detail/handler_base.hpp>
+#include <boost/process/detail/posix/async_handler.hpp>
+#include <system_error>
+#include <functional>
+
+namespace boost { namespace process { namespace detail {
+
+template<typename Tuple>
+inline asio::io_context& get_io_context(const Tuple & tup);
+
+namespace posix {
+
+struct on_exit_ : boost::process::detail::posix::async_handler
+{
+    std::function<void(int, const std::error_code&)> handler;
+    on_exit_(const std::function<void(int, const std::error_code&)> & handler) : handler(handler)
+    {
+    }
+
+    template<typename Executor>
+    std::function<void(int, const std::error_code&)> on_exit_handler(Executor& exec)
+    {
+        auto v = boost::asio::prefer(boost::process::detail::get_io_context(exec.seq).get_executor(),
+                                     boost::asio::execution::outstanding_work.tracked);
+        auto handler_ = this->handler;
+        return
+            [handler_, v](int exit_code, const std::error_code & ec)
+            {
+                handler_(exit_code, ec);
+            };
+
+    }
+};
+
+
+}}}}
+#endif /* BOOST_PROCESS_POSIX_ON_EXIT_HPP_ */

include/boost/process/detail/posix/pipe_in.hpp

@@ -1,51 +1,98 @@
-// Copyright (c) 2006, 2007 Julio M. Merino Vidal
-// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
-// Copyright (c) 2009 Boris Schaeling
-// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
-// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_POSIX_PIPE_IN_HPP
-#define BOOST_PROCESS_POSIX_PIPE_IN_HPP
-
-#include <boost/process/pipe.hpp>
-#include <boost/process/detail/posix/handler.hpp>
-#include <unistd.h>
-
-
-namespace boost { namespace process { namespace detail { namespace posix {
-
-struct pipe_in : handler_base_ext
-{
-    int descr_;
-
-    template<typename T>
-    pipe_in(const T & p) : descr_(p.native_source()) {}
-
-    template<typename Executor>
-    void on_error(Executor &, const std::error_code &) const
-    {
-        ::close(descr_);
-    }
-
-    template<typename Executor>
-    void on_success(Executor &) const
-    {
-        ::close(descr_);
-    }
-
-    template <class Executor>
-    void on_exec_setup(Executor &e) const
-    {
-        if (::dup2(descr_, STDIN_FILENO) == -1)
-             e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-        ::close(descr_);
-    }
-
-};
-
-}}}}
-
-#endif
+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_POSIX_PIPE_IN_HPP
+#define BOOST_PROCESS_POSIX_PIPE_IN_HPP
+
+#include <boost/process/pipe.hpp>
+#include <boost/process/detail/posix/handler.hpp>
+#include <unistd.h>
+#include <boost/process/detail/used_handles.hpp>
+#include <array>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+struct pipe_in : handler_base_ext, ::boost::process::detail::uses_handles
+{
+    int source;
+    int sink; //opposite end
+
+    pipe_in(int sink, int source) : source(source), sink(sink) {}
+
+    std::array<int, 3> get_used_handles()
+    {
+        return {{STDIN_FILENO, source, sink}};
+    }
+
+
+    template<typename T>
+    pipe_in(T & p) : source(p.native_source()), sink(p.native_sink())
+    {
+        p.assign_source(-1);
+    }
+
+    template<typename Executor>
+    void on_error(Executor &, const std::error_code &) const
+    {
+        ::close(source);
+    }
+
+    template<typename Executor>
+    void on_success(Executor &) const
+    {
+        ::close(source);
+    }
+
+    template <class Executor>
+    void on_exec_setup(Executor &e) const
+    {
+        if (::dup2(source, STDIN_FILENO) == -1)
+             e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+        if (source != STDIN_FILENO)
+            ::close(source);
+
+        ::close(sink);
+    }
+
+};
+
+class async_pipe;
+
+struct async_pipe_in : public pipe_in
+{
+    async_pipe &pipe;
+
+    template<typename AsyncPipe>
+    async_pipe_in(AsyncPipe & p) : pipe_in(p.native_sink(), p.native_source()), pipe(p)
+    {
+    }
+
+    template<typename Pipe, typename Executor>
+    static void close(Pipe & pipe, Executor &)
+    {
+        boost::system::error_code ec;
+        std::move(pipe).source().close(ec);
+    }
+
+    template<typename Executor>
+    void on_error(Executor & exec, const std::error_code &)
+    {
+        close(pipe, exec);
+    }
+
+    template<typename Executor>
+    void on_success(Executor &exec)
+    {
+        close(pipe, exec);
+    }
+};
+
+}}}}
+
+#endif

include/boost/process/detail/posix/pipe_out.hpp

@@ -1,76 +1,120 @@
-// Copyright (c) 2006, 2007 Julio M. Merino Vidal
-// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
-// Copyright (c) 2009 Boris Schaeling
-// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
-// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-#ifndef BOOST_PROCESS_DETAIL_POSIX_PIPE_OUT_HPP
-#define BOOST_PROCESS_DETAIL_POSIX_PIPE_OUT_HPP
-
-#include <boost/process/pipe.hpp>
-#include <boost/process/detail/posix/handler.hpp>
-#include <unistd.h>
-
-namespace boost { namespace process { namespace detail { namespace posix {
-
-template<int p1, int p2>
-struct pipe_out : handler_base_ext
-{
-    int descr_;
-
-    template<typename T>
-    pipe_out(const T & p) : descr_(p.native_sink()) {}
-
-    template<typename Executor>
-    void on_error(Executor &, const std::error_code &) const
-    {
-        ::close(descr_);
-    }
-
-    template<typename Executor>
-    void on_success(Executor &) const
-    {
-        ::close(descr_);
-    }
-
-    template <typename Executor>
-    void on_exec_setup(Executor &e) const;
-};
-
-template<>
-template<typename Executor>
-void pipe_out<1,-1>::on_exec_setup(Executor &e) const
-{
-    if (::dup2(descr_, STDOUT_FILENO) == -1)
-         e.set_error(::boost::process::detail::get_last_error(), "dup3() failed");
-    ::close(descr_);
-
-}
-
-template<>
-template<typename Executor>
-void pipe_out<2,-1>::on_exec_setup(Executor &e) const
-{
-    if (::dup2(descr_, STDERR_FILENO) == -1)
-         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-    ::close(descr_);
-}
-
-template<>
-template<typename Executor>
-void pipe_out<1,2>::on_exec_setup(Executor &e) const
-{
-    if (::dup2(descr_, STDOUT_FILENO) == -1)
-         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-    if (::dup2(descr_, STDERR_FILENO) == -1)
-         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
-    ::close(descr_);
-}
-
-}}}}
-
-#endif
+// Copyright (c) 2006, 2007 Julio M. Merino Vidal
+// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
+// Copyright (c) 2009 Boris Schaeling
+// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
+// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_PROCESS_DETAIL_POSIX_PIPE_OUT_HPP
+#define BOOST_PROCESS_DETAIL_POSIX_PIPE_OUT_HPP
+
+#include <boost/process/pipe.hpp>
+#include <boost/process/detail/posix/handler.hpp>
+#include <unistd.h>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+template<int p1, int p2>
+struct pipe_out : handler_base_ext
+{
+    int sink;
+    int source; //opposite end
+
+    pipe_out(int sink, int source) : sink(sink), source(source) {}
+
+    template<typename T>
+    pipe_out(T & p) : sink(p.native_sink()), source(p.native_source())
+    {
+        p.assign_sink(-1);
+    }
+
+    template<typename Executor>
+    void on_error(Executor &, const std::error_code &) const
+    {
+        ::close(sink);
+    }
+
+    template<typename Executor>
+    void on_success(Executor &) const
+    {
+        ::close(sink);
+    }
+
+    template <typename Executor>
+    void on_exec_setup(Executor &e) const;
+};
+
+template<>
+template<typename Executor>
+void pipe_out<1,-1>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(sink, STDOUT_FILENO) == -1)
+         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+
+    if (sink != STDOUT_FILENO)
+        ::close(sink);
+    ::close(source);
+}
+
+template<>
+template<typename Executor>
+void pipe_out<2,-1>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(sink, STDERR_FILENO) == -1)
+         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+
+    if (sink != STDOUT_FILENO)
+        ::close(sink);
+    ::close(source);
+}
+
+template<>
+template<typename Executor>
+void pipe_out<1,2>::on_exec_setup(Executor &e) const
+{
+    if (::dup2(sink, STDOUT_FILENO) == -1)
+         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+    if (::dup2(sink, STDERR_FILENO) == -1)
+         e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
+    if ((sink != STDOUT_FILENO) && (sink != STDERR_FILENO))
+        ::close(sink);
+}
+
+class async_pipe;
+
+template<int p1, int p2>
+struct async_pipe_out : public pipe_out<p1, p2>
+{
+    async_pipe &pipe;
+    template<typename AsyncPipe>
+    async_pipe_out(AsyncPipe & p) : pipe_out<p1, p2>(p.native_sink(), p.native_source()), pipe(p)
+    {
+    }
+
+    template<typename Pipe, typename Executor>
+    static void close(Pipe & pipe, Executor &)
+    {
+        boost::system::error_code ec;
+        std::move(pipe).sink().close(ec);
+    }
+
+    template<typename Executor>
+    void on_error(Executor & exec, const std::error_code &)
+    {
+        close(pipe, exec);
+    }
+
+    template<typename Executor>
+    void on_success(Executor &exec)
+    {
+        close(pipe, exec);
+    }
+};
+
+
+}}}}
+
+#endif

include/boost/process/detail/posix/search_path.hpp

@@ -11,7 +11,7 @@
 #define BOOST_PROCESS_POSIX_SEARCH_PATH_HPP
 
 #include <boost/process/detail/config.hpp>
-#include <boost/filesystem.hpp>
+#include <boost/process/filesystem.hpp>
 #include <boost/tokenizer.hpp>
 #include <string>
 #include <stdexcept>
@@ -20,15 +20,20 @@
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
-inline boost::filesystem::path search_path(
-        const boost::filesystem::path &filename,
-        const std::vector<boost::filesystem::path> &path)
+inline boost::process::filesystem::path search_path(
+        const boost::process::filesystem::path &filename,
+        const std::vector<boost::process::filesystem::path> &path)
 {
-    std::string result;
-    for (const boost::filesystem::path & pp : path)
+    for (const boost::process::filesystem::path & pp : path)
     {
         auto p = pp / filename;
-        if (!::access(p.c_str(), X_OK))
+#if defined(BOOST_PROCESS_USE_STD_FS)
+        std::error_code ec;
+#else
+        boost::system::error_code ec;
+#endif
+        bool file = boost::process::filesystem::is_regular_file(p, ec);
+        if (!ec && file && ::access(p.c_str(), X_OK) == 0)
             return p;
     }
     return "";

include/boost/process/detail/posix/shell_path.hpp

@@ -12,16 +12,16 @@
 
 #include <boost/process/detail/config.hpp>
 #include <boost/system/error_code.hpp>
-#include <boost/filesystem/path.hpp>
+#include <boost/process/filesystem.hpp>
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
-inline boost::filesystem::path shell_path()
+inline boost::process::filesystem::path shell_path()
 {
     return "/bin/sh";
 }
 
-inline boost::filesystem::path shell_path(std::error_code &ec)
+inline boost::process::filesystem::path shell_path(std::error_code &ec)
 {
     ec.clear();
     return "/bin/sh";

include/boost/process/detail/posix/sigchld_service.hpp

@@ -0,0 +1,152 @@
+// Copyright (c) 2017 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+#ifndef BOOST_PROCESS_DETAIL_POSIX_SIGCHLD_SERVICE_HPP_
+#define BOOST_PROCESS_DETAIL_POSIX_SIGCHLD_SERVICE_HPP_
+
+#include <boost/asio/bind_executor.hpp>
+#include <boost/asio/dispatch.hpp>
+#include <boost/asio/post.hpp>
+#include <boost/asio/consign.hpp>
+#include <boost/asio/append.hpp>
+#include <boost/asio/signal_set.hpp>
+#include <boost/asio/strand.hpp>
+#include <boost/optional.hpp>
+#include <signal.h>
+#include <functional>
+#include <sys/wait.h>
+#include <list>
+
+namespace boost { namespace process { namespace detail { namespace posix {
+
+class sigchld_service : public boost::asio::detail::service_base<sigchld_service>
+{
+    boost::asio::strand<boost::asio::io_context::executor_type> _strand{get_io_context().get_executor()};
+    boost::asio::signal_set _signal_set{get_io_context(), SIGCHLD};
+
+    std::list<std::pair<::pid_t, std::function<void(int, std::error_code)>>> _receivers;
+    inline void _handle_signal(const boost::system::error_code & ec);
+
+    struct initiate_async_wait_op
+    {
+        sigchld_service * self;
+        template<typename Initiation>
+        void operator()(Initiation && init, ::pid_t pid)
+        {
+            // check if the child actually is running first
+            int status;
+            auto pid_res = ::waitpid(pid, &status, WNOHANG);
+            if (pid_res < 0)
+            {
+                auto ec = get_last_error();
+                boost::asio::post(
+                        self->_strand,
+                        asio::append(std::forward<Initiation>(init), pid_res, ec));
+            }
+            else if ((pid_res == pid) && (WIFEXITED(status) || WIFSIGNALED(status)))
+                boost::asio::post(
+                        self->_strand,
+                        boost::asio::append(std::forward<Initiation>(init), status, std::error_code{}));
+            else //still running
+            {
+                sigchld_service * self_ = self;
+                if (self->_receivers.empty())
+                    self->_signal_set.async_wait(
+                        boost::asio::bind_executor(
+                            self->_strand,
+                            [self_](const boost::system::error_code &ec, int)
+                            {
+                                self_->_handle_signal(ec);
+                            }));
+                self->_receivers.emplace_back(pid, init);
+            }
+        }
+    };
+
+public:
+    sigchld_service(boost::asio::io_context & io_context)
+        : boost::asio::detail::service_base<sigchld_service>(io_context)
+    {
+    }
+
+    template <typename SignalHandler>
+    BOOST_ASIO_INITFN_RESULT_TYPE(SignalHandler,
+        void (int, std::error_code))
+    async_wait(::pid_t pid, SignalHandler && handler)
+    {
+        return boost::asio::async_initiate<
+            SignalHandler,
+            void(int, std::error_code)>(
+                initiate_async_wait_op{this}, handler, pid);
+    }
+    void shutdown() override
+    {
+        _receivers.clear();
+    }
+
+    void cancel()
+    {
+        _signal_set.cancel();
+    }
+    void cancel(boost::system::error_code & ec)
+    {
+        _signal_set.cancel(ec);
+    }
+};
+
+
+void sigchld_service::_handle_signal(const boost::system::error_code & ec)
+{
+    std::error_code ec_{ec.value(), std::system_category()};
+
+    if (ec_)
+    {
+        for (auto & r : _receivers)
+            r.second(-1, ec_);
+        return;
+    }
+
+    for (auto & r : _receivers) {
+        int status;
+        int pid = ::waitpid(r.first, &status, WNOHANG);
+        if (pid < 0) {
+            // error (eg: the process no longer exists)
+            r.second(-1, get_last_error());
+            r.first = 0; // mark for deletion
+        } else if (pid == r.first) {
+            r.second(status, ec_);
+            r.first = 0; // mark for deletion
+        }
+        // otherwise the process is still around
+    }
+
+    _receivers.erase(std::remove_if(_receivers.begin(), _receivers.end(),
+            [](const std::pair<::pid_t, std::function<void(int, std::error_code)>> & p)
+            {
+                return p.first == 0;
+            }),
+            _receivers.end());
+
+    if (!_receivers.empty())
+    {
+        _signal_set.async_wait(
+            [this](const boost::system::error_code & ec, int)
+            {
+                boost::asio::post(_strand, [this, ec]{this->_handle_signal(ec);});
+            });
+    }
+}
+
+
+}
+}
+}
+}
+
+
+
+
+#endif

include/boost/process/detail/posix/signal.hpp

@@ -16,9 +16,17 @@
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
+#if defined(__GLIBC__)
+    using sighandler_t = ::sighandler_t;
+#else
+    using sighandler_t = void(*)(int);
+#endif
+
+
 struct sig_init_ : handler_base_ext
 {
-    sig_init_ (::sighandler_t handler) : _handler(handler) {}
+
+    sig_init_ (sighandler_t handler) : _handler(handler) {}
 
     template <class PosixExecutor>
     void on_exec_setup(PosixExecutor&)
@@ -47,16 +55,16 @@ struct sig_init_ : handler_base_ext
     }
 private:
     bool _reset = false;
-    ::sighandler_t _old{0};
-    ::sighandler_t _handler{0};
+    ::boost::process::detail::posix::sighandler_t _old{0};
+    ::boost::process::detail::posix::sighandler_t _handler{0};
 };
 
 struct sig_
 {
     constexpr sig_() {}
 
-    sig_init_ operator()(::sighandler_t h) const {return h;}
-    sig_init_ operator= (::sighandler_t h) const {return h;}
+    sig_init_ operator()(::boost::process::detail::posix::sighandler_t h) const {return h;}
+    sig_init_ operator= (::boost::process::detail::posix::sighandler_t h) const {return h;}
     sig_init_ dfl() const {return SIG_DFL;}
     sig_init_ ign() const {return SIG_IGN;}
 

include/boost/process/detail/posix/start_dir.hpp

@@ -13,6 +13,7 @@
 #include <boost/process/detail/posix/handler.hpp>
 #include <string>
 #include <unistd.h>
+#include <boost/core/ignore_unused.hpp>
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
@@ -21,12 +22,12 @@ struct start_dir_init : handler_base_ext
 {
     typedef Char value_type;
     typedef std::basic_string<value_type> string_type;
-    start_dir_init(const string_type &s) : s_(s) {}
+    start_dir_init(string_type s) : s_(std::move(s)) {}
 
     template <class PosixExecutor>
     void on_exec_setup(PosixExecutor&) const
     {
-        ::chdir(s_.c_str());
+        boost::ignore_unused(::chdir(s_.c_str()));
     }
     const string_type & str() const {return s_;}
 private:

include/boost/process/detail/posix/terminate.hpp

@@ -19,15 +19,6 @@
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
-
-inline void terminate(const child_handle &p)
-{
-    if (::kill(p.pid, SIGKILL) == -1)
-        boost::process::detail::throw_last_error("kill(2) failed");
-    int status;
-    ::waitpid(p.pid, &status, 0); //just to clean it up
-}
-
 inline void terminate(const child_handle &p, std::error_code &ec) noexcept
 {
     if (::kill(p.pid, SIGKILL) == -1)
@@ -36,7 +27,14 @@ inline void terminate(const child_handle &p, std::error_code &ec) noexcept
         ec.clear();
 
     int status;
-    ::waitpid(p.pid, &status, 0); //just to clean it up
+    ::waitpid(p.pid, &status, 0); //should not be WNOHANG, since that would allow zombies.
+}
+
+inline void terminate(const child_handle &p)
+{
+    std::error_code ec;
+    terminate(p, ec);
+    boost::process::detail::throw_error(ec, "kill(2) failed");
 }
 
 }}}}

include/boost/process/detail/posix/wait_for_exit.hpp

@@ -15,23 +15,10 @@
 #include <system_error>
 #include <sys/types.h>
 #include <sys/wait.h>
-
+#include <unistd.h>
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
-inline void wait(const child_handle &p, int & exit_code)
-{
-    pid_t ret;
-    int status;
-    do
-    {
-        ret = ::waitpid(p.pid, &status, 0);
-    } while (((ret == -1) && (errno == EINTR)) || (ret != -1 && !WIFEXITED(status)));
-    if (ret == -1)
-        boost::process::detail::throw_last_error("waitpid(2) failed");
-     exit_code = status;
-}
-
 inline void wait(const child_handle &p, int & exit_code, std::error_code &ec) noexcept
 {
     pid_t ret;
@@ -41,8 +28,9 @@ inline void wait(const child_handle &p, int & exit_code, std::error_code &ec) no
     {
         ret = ::waitpid(p.pid, &status, 0);
     } 
-    while (((ret == -1) && (errno == EINTR)) || (ret != -1 && !WIFEXITED(status)));
-    
+    while (((ret == -1) && (errno == EINTR)) || 
+           (ret != -1 && !WIFEXITED(status) && !WIFSIGNALED(status)));
+
     if (ret == -1)
         ec = boost::process::detail::get_last_error();
     else
@@ -50,45 +38,181 @@ inline void wait(const child_handle &p, int & exit_code, std::error_code &ec) no
         ec.clear();
         exit_code = status;
     }
-  
-
 }
 
-template< class Rep, class Period >
-inline bool wait_for(
+inline void wait(const child_handle &p, int & exit_code) noexcept
+{
+    std::error_code ec;
+    wait(p, exit_code, ec);
+    boost::process::detail::throw_error(ec, "waitpid(2) failed in wait");
+}
+
+template< class Clock, class Duration >
+inline bool wait_until(
         const child_handle &p,
         int & exit_code,
-        const std::chrono::duration<Rep, Period>& rel_time)
+        const std::chrono::time_point<Clock, Duration>& time_out,
+        std::error_code & ec) noexcept
 {
+    ::sigset_t  sigset;
 
-    pid_t ret;
-    int status;
+    //I need to set the signal, because it might be ignore / default, in which case sigwait might not work.
 
-    auto start = std::chrono::system_clock::now();
-    auto time_out = start + rel_time;
+    using _signal_t = void(*)(int);
+    static thread_local _signal_t sigchld_handler = SIG_DFL;
 
-    bool time_out_occured = false;
+    struct signal_interceptor_t
+    {
+        static void handler_func(int val)
+        {
+            if ((sigchld_handler != SIG_DFL) && (sigchld_handler != SIG_IGN))
+                sigchld_handler(val);
+        }
+        signal_interceptor_t()  { sigchld_handler = ::signal(SIGCHLD, &handler_func); }
+        ~signal_interceptor_t() { ::signal(SIGCHLD, sigchld_handler); sigchld_handler = SIG_DFL;}
+
+    } signal_interceptor{};
+
+    if (sigemptyset(&sigset) != 0)
+    {
+        ec = get_last_error();
+        return false;
+    }
+    if (sigaddset(&sigset, SIGCHLD) != 0)
+    {
+        ec = get_last_error();
+        return false;
+    }
+
+    auto get_timespec = 
+            [](const Duration & dur)
+            {
+                ::timespec ts;
+                ts.tv_sec  = std::chrono::duration_cast<std::chrono::seconds>(dur).count();
+                ts.tv_nsec = std::chrono::duration_cast<std::chrono::nanoseconds>(dur).count() % 1000000000;
+                return ts;
+            };
+
+    int ret;
+    int status{0};
+
+    struct ::sigaction old_sig;
+    if (-1 == ::sigaction(SIGCHLD, nullptr, &old_sig))
+    {
+        ec = get_last_error();
+        return false;
+    }
+
+    bool timed_out;
+
+#if defined(BOOST_POSIX_HAS_SIGTIMEDWAIT)
     do
     {
-        ret = ::waitpid(p.pid, &status, WUNTRACED | WNOHANG);
-        if (std::chrono::system_clock::now() >= time_out)
-        {
-            time_out_occured = true;
-            break;
-        }
-    } 
-    while (((ret == -1) && errno == EINTR)       || 
-           ((ret != -1) && !WIFEXITED(status)));
+        auto ts = get_timespec(time_out - Clock::now());
+        auto ret_sig = ::sigtimedwait(&sigset, nullptr, &ts);
+        errno = 0;
+        ret = ::waitpid(p.pid, &status, WNOHANG);
 
+        if ((ret_sig == SIGCHLD) && (old_sig.sa_handler != SIG_DFL) && (old_sig.sa_handler != SIG_IGN))
+            old_sig.sa_handler(ret);
+
+        if (ret == 0)
+        {
+            timed_out = Clock::now() >= time_out;
+            if (timed_out)
+                return false;
+        }
+    }
+    while ((ret == 0) ||
+          (((ret == -1) && errno == EINTR) ||
+           ((ret != -1) && !WIFEXITED(status) && !WIFSIGNALED(status))));
+#else
+    //if we do not have sigtimedwait, we fork off a child process  to get the signal in time
+    pid_t timeout_pid = ::fork();
+    if (timeout_pid  == -1)
+    {
+        ec = boost::process::detail::get_last_error();
+        return true;
+    }
+    else if (timeout_pid == 0)
+    {
+        auto ts = get_timespec(time_out - Clock::now());
+        ::timespec rem;
+        while (ts.tv_sec > 0 || ts.tv_nsec > 0)
+        {
+            if (::nanosleep(&ts, &rem) != 0)
+            {
+                auto err = errno;
+                if ((err == EINVAL) || (err == EFAULT))
+                    break;
+            }
+            ts = get_timespec(time_out - Clock::now());
+        }
+        ::exit(0);
+    }
+
+    struct child_cleaner_t
+    {
+        pid_t pid;
+        ~child_cleaner_t()
+        {
+            int res;
+            ::kill(pid, SIGKILL);
+            ::waitpid(pid, &res, 0);
+        }
+    };
+    child_cleaner_t child_cleaner{timeout_pid};
+
+    do
+    {
+        int sig_{0};
+        if ((::waitpid(timeout_pid, &status, WNOHANG) != 0)
+            && (WIFEXITED(status) || WIFSIGNALED(status)))
+
+            return false;
+
+        ret = ::sigwait(&sigset, &sig_);
+        errno = 0;
+
+        if ((sig_ == SIGCHLD) &&
+            (old_sig.sa_handler != SIG_DFL) && (old_sig.sa_handler != SIG_IGN))
+            old_sig.sa_handler(ret);
+
+        ret = ::waitpid(p.pid, &status, WNOHANG);
+        if (ret == 0) // == > is running
+        {
+            timed_out = Clock::now() >= time_out;
+            if (timed_out)
+                return false;
+        }
+    }
+    while ((ret == 0) ||
+           (((ret == -1) && errno == EINTR) ||
+            ((ret != -1) && !WIFEXITED(status) && !WIFSIGNALED(status))));
+#endif
 
     if (ret == -1)
-        boost::process::detail::throw_last_error("waitpid(2) failed");
-     
-    exit_code = status;
+        ec = boost::process::detail::get_last_error();
+    else
+    {
+        ec.clear();
+        exit_code = status;
+    }
 
-    return !time_out_occured;
+    return true;
 }
 
+template< class Clock, class Duration >
+inline bool wait_until(
+        const child_handle &p,
+        int & exit_code,
+        const std::chrono::time_point<Clock, Duration>& time_out)
+{
+    std::error_code ec;
+    bool b = wait_until(p, exit_code, time_out, ec);
+    boost::process::detail::throw_error(ec, "waitpid(2) failed in wait_until");
+    return b;
+}
 
 template< class Rep, class Period >
 inline bool wait_for(
@@ -97,111 +221,19 @@ inline bool wait_for(
         const std::chrono::duration<Rep, Period>& rel_time,
         std::error_code & ec) noexcept
 {
-
-    pid_t ret;
-    int status;
-
-    auto start = std::chrono::system_clock::now();
-    auto time_out = start + rel_time;
-
-    bool time_out_occured = false;
-    do
-    {
-        ret = ::waitpid(p.pid, &status, WUNTRACED | WNOHANG);
-        if (std::chrono::system_clock::now() >= time_out)
-        {
-            time_out_occured = true;
-            break;
-        }
-    } 
-    while (((ret == -1) && errno == EINTR)       || 
-           ((ret != -1) && !WIFEXITED(status)));
-
-
-    if (ret == -1)
-        ec = boost::process::detail::get_last_error();
-    else
-    {
-        ec.clear();
-        exit_code = status;
-    }
-
-    return !time_out_occured;
+    return wait_until(p, exit_code, std::chrono::steady_clock::now() + rel_time, ec);
 }
 
-
-
 template< class Rep, class Period >
-inline bool wait_until(
+inline bool wait_for(
         const child_handle &p,
         int & exit_code,
-        const std::chrono::duration<Rep, Period>& time_out)
+        const std::chrono::duration<Rep, Period>& rel_time)
 {
-
-    pid_t ret;
-    int status;
-
-    auto start = std::chrono::system_clock::now();
-
-    bool time_out_occured = false;
-    do
-    {
-        ret = ::waitpid(p.pid, &status, WUNTRACED | WNOHANG);
-        if (std::chrono::system_clock::now() >= time_out)
-        {
-            time_out_occured = true;
-            break;
-        }
-    } 
-    while (((ret == -1) && errno == EINTR)       || 
-           ((ret != -1) && !WIFEXITED(status)));
-
-
-    if (ret == -1)
-        boost::process::detail::throw_last_error("waitpid(2) failed");
-
-    exit_code = status;
-
-    return !time_out_occured;
-}
-
-
-template< class Rep, class Period >
-inline bool wait_until(
-        const child_handle &p,
-        int & exit_code,
-        const std::chrono::duration<Rep, Period>& time_out,
-        std::error_code & ec) noexcept
-{
-
-    pid_t ret;
-    int status;
-
-    auto start = std::chrono::system_clock::now();
-
-    bool time_out_occured = false;
-    do
-    {
-        ret = ::waitpid(p.pid, &status, WUNTRACED | WNOHANG);
-        if (std::chrono::system_clock::now() >= time_out)
-        {
-            time_out_occured = true;
-            break;
-        }
-    } 
-    while (((ret == -1) && errno == EINTR)       || 
-           ((ret != -1) && !WIFEXITED(status)));
-
-
-    if (ret == -1)
-        ec = boost::process::detail::get_last_error();
-    else
-    {
-        ec.clear();
-        exit_code = status;
-    }
-
-    return !time_out_occured;
+    std::error_code ec;
+    bool b = wait_for(p, exit_code, rel_time, ec);
+    boost::process::detail::throw_error(ec, "waitpid(2) failed in wait_for");
+    return b;
 }
 
 }}}}

include/boost/process/detail/posix/wait_group.hpp

@@ -12,75 +12,92 @@
 
 #include <boost/process/detail/config.hpp>
 #include <boost/process/detail/posix/group_handle.hpp>
+#include <chrono>
 #include <system_error>
 #include <sys/types.h>
 #include <sys/wait.h>
+#include <unistd.h>
 
 namespace boost { namespace process { namespace detail { namespace posix {
 
-inline void wait(const group_handle &p)
-{
-    pid_t ret;
-    int status;
-    do
-    {
-        ret = ::waitpid(-p.grp, &status, 0);
-    } while (((ret == -1) && (errno == EINTR)) || (ret != -1 && !WIFEXITED(status)));
-    if (ret == -1)
-        boost::process::detail::throw_last_error("waitpid(2) failed");
-}
-
 inline void wait(const group_handle &p, std::error_code &ec) noexcept
 {
     pid_t ret;
-    int status;
+    siginfo_t  status;
 
     do
     {
-        ret = ::waitpid(-p.grp, &status, 0);
+        ret = ::waitpid(-p.grp, &status.si_status, 0);
+        if (ret == -1)
+        {
+            ec = get_last_error();
+            return; 
+        }
+
+        //ECHILD --> no child processes left.
+        ret = ::waitid(P_PGID, p.grp, &status, WEXITED | WNOHANG);
     } 
-    while (((ret == -1) && (errno == EINTR)) || (ret != -1 && !WIFEXITED(status)));
-    
-    if (ret == -1)
+    while ((ret != -1) || (errno != ECHILD));
+   
+    if (errno != ECHILD)
         ec = boost::process::detail::get_last_error();
     else
         ec.clear();
-
 }
 
-template< class Rep, class Period >
-inline bool wait_for(
+inline void wait(const group_handle &p) noexcept
+{
+    std::error_code ec;
+    wait(p, ec);
+    boost::process::detail::throw_error(ec, "waitpid(2) failed in wait");
+}
+
+template< class Clock, class Duration >
+inline bool wait_until(
         const group_handle &p,
-        const std::chrono::duration<Rep, Period>& rel_time)
+        const std::chrono::time_point<Clock, Duration>& time_out,
+        std::error_code & ec) noexcept
 {
 
-    pid_t ret;
-    int status;
+    ::siginfo_t siginfo;
 
-    auto start = std::chrono::system_clock::now();
-    auto time_out = start + rel_time;
+    bool timed_out = false;
+    int ret;
 
-    bool time_out_occured = false;
-    do
+    ::timespec sleep_interval;
+    sleep_interval.tv_sec = 0;
+    sleep_interval.tv_nsec = 100000000;
+
+
+    while (!(timed_out = (Clock::now() > time_out)))
     {
-        ret = ::waitpid(-p.grp, &status, WUNTRACED | WNOHANG);
-        if (std::chrono::system_clock::now() >= time_out)
+        ret = ::waitid(P_PGID, p.grp, &siginfo, WEXITED | WSTOPPED | WNOHANG);
+        if (ret == -1)
         {
-            time_out_occured = true;
-            break;
+            if ((errno == ECHILD) || (errno == ESRCH))
+            {
+                ec.clear();
+                return true;
+            }
+            ec = boost::process::detail::get_last_error();
+            return false;
         }
-    } 
-    while (((ret == -1) && errno == EINTR)       || 
-           ((ret != -1) && !WIFEXITED(status)));
-
-
-    if (ret == -1)
-        boost::process::detail::throw_last_error("waitpid(2) failed");
-     
-
-    return !time_out_occured;
+        //we can wait, because unlike in the wait_for_exit, we have no race condition regarding eh exit code.
+        ::nanosleep(&sleep_interval, nullptr);
+    }
+    return !timed_out;
 }
 
+template< class Clock, class Duration >
+inline bool wait_until(
+        const group_handle &p,
+        const std::chrono::time_point<Clock, Duration>& time_out) noexcept
+{
+    std::error_code ec;
+    bool b = wait_until(p, time_out, ec);
+    boost::process::detail::throw_error(ec, "waitpid(2) failed in wait_until");
+    return b;
+}
 
 template< class Rep, class Period >
 inline bool wait_for(
@@ -88,102 +105,18 @@ inline bool wait_for(
         const std::chrono::duration<Rep, Period>& rel_time,
         std::error_code & ec) noexcept
 {
-
-    pid_t ret;
-    int status;
-
-    auto start = std::chrono::system_clock::now();
-    auto time_out = start + rel_time;
-
-    bool time_out_occured = false;
-    do
-    {
-        ret = ::waitpid(-p.grp, &status, WUNTRACED | WNOHANG);
-        if (std::chrono::system_clock::now() >= time_out)
-        {
-            time_out_occured = true;
-            break;
-        }
-    } 
-    while (((ret == -1) && errno == EINTR)       || 
-           ((ret != -1) && !WIFEXITED(status)));
-
-
-    if (ret == -1)
-        ec = boost::process::detail::get_last_error();
-    else
-        ec.clear();
-
-    return !time_out_occured;
+    return wait_until(p, std::chrono::steady_clock::now() + rel_time, ec);
 }
 
-
-
 template< class Rep, class Period >
-inline bool wait_until(
+inline bool wait_for(
         const group_handle &p,
-        const std::chrono::duration<Rep, Period>& time_out)
+        const std::chrono::duration<Rep, Period>& rel_time) noexcept
 {
-
-    pid_t ret;
-    int status;
-
-    auto start = std::chrono::system_clock::now();
-
-    bool time_out_occured = false;
-    do
-    {
-        ret = ::waitpid(-p.grp, &status, WUNTRACED | WNOHANG);
-        if (std::chrono::system_clock::now() >= time_out)
-        {
-            time_out_occured = true;
-            break;
-        }
-    } 
-    while (((ret == -1) && errno == EINTR)       || 
-           ((ret != -1) && !WIFEXITED(status)));
-
-
-    if (ret == -1)
-        boost::process::detail::throw_last_error("waitpid(2) failed");
-
-
-    return !time_out_occured;
-}
-
-
-template< class Rep, class Period >
-inline bool wait_until(
-        const group_handle &p,
-        const std::chrono::duration<Rep, Period>& time_out,
-        std::error_code & ec) noexcept
-{
-
-    pid_t ret;
-    int status;
-
-    auto start = std::chrono::system_clock::now();
-
-    bool time_out_occured = false;
-    do
-    {
-        ret = ::waitpid(-p.grp, &status, WUNTRACED | WNOHANG);
-        if (std::chrono::system_clock::now() >= time_out)
-        {
-            time_out_occured = true;
-            break;
-        }
-    } 
-    while (((ret == -1) && errno == EINTR)       || 
-           ((ret != -1) && !WIFEXITED(status)));
-
-
-    if (ret == -1)
-        ec = boost::process::detail::get_last_error();
-    else
-        ec.clear();
-
-    return !time_out_occured;
+    std::error_code ec;
+    bool b = wait_for(p, rel_time, ec);
+    boost::process::detail::throw_error(ec, "waitpid(2) failed in wait_for");
+    return b;
 }
 
 }}}}

include/boost/process/detail/throw_on_error.hpp

@@ -19,7 +19,7 @@ namespace boost { namespace process { namespace detail {
 struct throw_on_error_ : ::boost::process::detail::handler
 {
     template <class Executor>
-    void on_error(Executor&, const std::error_code & ec) const
+    void on_error(Executor& exec, const std::error_code & ec) const
     {
         throw process_error(ec, "process creation failed");
     }
@@ -29,7 +29,7 @@ struct throw_on_error_ : ::boost::process::detail::handler
 
 }
 
-constexpr static boost::process::detail::throw_on_error_ throw_on_error;
+constexpr boost::process::detail::throw_on_error_ throw_on_error;
 
 }}
 

include/boost/process/detail/traits.hpp

@@ -1,17 +1,17 @@
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-
-#ifndef BOOST_PROCESS_TRAITS_HPP_
-#define BOOST_PROCESS_TRAITS_HPP_
-
-#include <boost/process/detail/traits/decl.hpp>
-#include <boost/process/detail/traits/async.hpp>
-#include <boost/process/detail/traits/cmd_or_exe.hpp>
-#include <boost/process/detail/traits/env.hpp>
-#include <boost/process/detail/traits/error.hpp>
-#include <boost/process/detail/traits/wchar_t.hpp>
-
-#endif /* BOOST_PROCESS_TRAITS_HPP_ */
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+#ifndef BOOST_PROCESS_TRAITS_HPP_
+#define BOOST_PROCESS_TRAITS_HPP_
+
+#include <boost/process/detail/traits/decl.hpp>
+#include <boost/process/detail/traits/async.hpp>
+#include <boost/process/detail/traits/cmd_or_exe.hpp>
+#include <boost/process/detail/traits/env.hpp>
+#include <boost/process/detail/traits/error.hpp>
+#include <boost/process/detail/traits/wchar_t.hpp>
+
+#endif /* BOOST_PROCESS_TRAITS_HPP_ */

include/boost/process/detail/traits/async.hpp

@@ -1,34 +1,34 @@
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-
-#ifndef BOOST_PROCESS_DETAIL_TRAITS_ASYNC_HPP_
-#define BOOST_PROCESS_DETAIL_TRAITS_ASYNC_HPP_
-
-#include <boost/process/detail/config.hpp>
-#include <boost/process/detail/traits/decl.hpp>
-
-namespace boost { namespace asio {
-
-class io_service;
-}}
-
-namespace boost { namespace process { namespace detail {
-
-struct async_tag {};
-
-template<>
-struct initializer_builder<async_tag>;
-
-template<> struct initializer_tag<::boost::asio::io_service> { typedef async_tag type;};
-
-
-
-
-}}}
-
-
-
-#endif /* BOOST_PROCESS_DETAIL_HANDLER_HPP_ */
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+#ifndef BOOST_PROCESS_DETAIL_TRAITS_ASYNC_HPP_
+#define BOOST_PROCESS_DETAIL_TRAITS_ASYNC_HPP_
+
+#include <boost/process/detail/config.hpp>
+#include <boost/process/detail/traits/decl.hpp>
+
+namespace boost { namespace asio {
+
+class io_context;
+}}
+
+namespace boost { namespace process { namespace detail {
+
+struct async_tag {};
+
+template<>
+struct initializer_builder<async_tag>;
+
+template<> struct initializer_tag<::boost::asio::io_context> { typedef async_tag type;};
+
+
+
+
+}}}
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_HANDLER_HPP_ */

include/boost/process/detail/traits/cmd_or_exe.hpp

@@ -1,82 +1,85 @@
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-
-#ifndef BOOST_PROCESS_DETAIL_TRAITS_CMD_OR_EXE_HPP_
-#define BOOST_PROCESS_DETAIL_TRAITS_CMD_OR_EXE_HPP_
-
-#include <string>
-#include <vector>
-#include <type_traits>
-#include <initializer_list>
-#include <boost/filesystem/path.hpp>
-#include <boost/process/detail/traits/decl.hpp>
-namespace boost { namespace process { namespace detail {
-
-template<typename Char>
-struct cmd_or_exe_tag {};
-
-struct shell_;
-
-
-template<> struct initializer_tag<const char*    > { typedef cmd_or_exe_tag<char>    type;};
-template<> struct initializer_tag<const wchar_t* > { typedef cmd_or_exe_tag<wchar_t> type;};
-
-template<> struct initializer_tag<char*    > { typedef cmd_or_exe_tag<char>     type;};
-template<> struct initializer_tag<wchar_t* > { typedef cmd_or_exe_tag<wchar_t>  type;};
-
-template<std::size_t Size> struct initializer_tag<const char    [Size]> { typedef cmd_or_exe_tag<char>     type;};
-template<std::size_t Size> struct initializer_tag<const wchar_t [Size]> { typedef cmd_or_exe_tag<wchar_t>  type;};
-
-template<std::size_t Size> struct initializer_tag<const char    (&)[Size]> { typedef cmd_or_exe_tag<char>     type;};
-template<std::size_t Size> struct initializer_tag<const wchar_t (&)[Size]> { typedef cmd_or_exe_tag<wchar_t>  type;};
-
-template<> struct initializer_tag<std::basic_string<char    >> { typedef cmd_or_exe_tag<char>     type;};
-template<> struct initializer_tag<std::basic_string<wchar_t >> { typedef cmd_or_exe_tag<wchar_t>  type;};
-
-template<> struct initializer_tag<std::vector<std::basic_string<char    >>> { typedef cmd_or_exe_tag<char>     type;};
-template<> struct initializer_tag<std::vector<std::basic_string<wchar_t >>> { typedef cmd_or_exe_tag<wchar_t>  type;};
-
-template<> struct initializer_tag<std::initializer_list<std::basic_string<char    >>> { typedef cmd_or_exe_tag<char>     type;};
-template<> struct initializer_tag<std::initializer_list<std::basic_string<wchar_t >>> { typedef cmd_or_exe_tag<wchar_t>  type;};
-
-template<> struct initializer_tag<std::vector<char    *>> { typedef cmd_or_exe_tag<char>     type;};
-template<> struct initializer_tag<std::vector<wchar_t *>> { typedef cmd_or_exe_tag<wchar_t>  type;};
-
-template<> struct initializer_tag<std::initializer_list<char    *>> { typedef cmd_or_exe_tag<char>     type;};
-template<> struct initializer_tag<std::initializer_list<wchar_t *>> { typedef cmd_or_exe_tag<wchar_t>  type;};
-
-template<> struct initializer_tag<shell_>
-{
-    typedef cmd_or_exe_tag<typename boost::filesystem::path::value_type> type;
-};
-
-template<> struct initializer_tag<boost::filesystem::path>
-{
-    typedef cmd_or_exe_tag<typename boost::filesystem::path::value_type> type;
-};
-
-template <typename Char>
-struct exe_setter_;
-template <typename Char, bool Append = false>
-struct arg_setter_;
-
-template <typename Char, bool Append>
-struct initializer_tag<arg_setter_<Char, Append>> { typedef cmd_or_exe_tag<Char> type;};
-
-template<typename Char> struct initializer_tag<exe_setter_<Char>> { typedef cmd_or_exe_tag<Char> type;};
-
-template<>
-struct initializer_builder<cmd_or_exe_tag<char>>;
-
-template<>
-struct initializer_builder<cmd_or_exe_tag<wchar_t>>;
-
-
-}}}
-
-
-
-#endif /* BOOST_PROCESS_DETAIL_STRING_TRAITS_HPP_ */
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+#ifndef BOOST_PROCESS_DETAIL_TRAITS_CMD_OR_EXE_HPP_
+#define BOOST_PROCESS_DETAIL_TRAITS_CMD_OR_EXE_HPP_
+
+#include <string>
+#include <vector>
+#include <type_traits>
+#include <initializer_list>
+#include <boost/process/filesystem.hpp>
+#include <boost/process/detail/traits/decl.hpp>
+namespace boost { namespace process { namespace detail {
+
+template<typename Char>
+struct cmd_or_exe_tag {};
+
+struct shell_;
+
+
+template<> struct initializer_tag<const char*    > { typedef cmd_or_exe_tag<char>    type;};
+template<> struct initializer_tag<const wchar_t* > { typedef cmd_or_exe_tag<wchar_t> type;};
+
+template<> struct initializer_tag<char*    > { typedef cmd_or_exe_tag<char>     type;};
+template<> struct initializer_tag<wchar_t* > { typedef cmd_or_exe_tag<wchar_t>  type;};
+
+template<std::size_t Size> struct initializer_tag<const char    [Size]> { typedef cmd_or_exe_tag<char>     type;};
+template<std::size_t Size> struct initializer_tag<const wchar_t [Size]> { typedef cmd_or_exe_tag<wchar_t>  type;};
+
+template<std::size_t Size> struct initializer_tag<const char    (&)[Size]> { typedef cmd_or_exe_tag<char>     type;};
+template<std::size_t Size> struct initializer_tag<const wchar_t (&)[Size]> { typedef cmd_or_exe_tag<wchar_t>  type;};
+
+template<> struct initializer_tag<std::basic_string<char    >> { typedef cmd_or_exe_tag<char>     type;};
+template<> struct initializer_tag<std::basic_string<wchar_t >> { typedef cmd_or_exe_tag<wchar_t>  type;};
+
+template<> struct initializer_tag<std::vector<std::basic_string<char    >>> { typedef cmd_or_exe_tag<char>     type;};
+template<> struct initializer_tag<std::vector<std::basic_string<wchar_t >>> { typedef cmd_or_exe_tag<wchar_t>  type;};
+
+template<> struct initializer_tag<std::initializer_list<std::basic_string<char    >>> { typedef cmd_or_exe_tag<char>     type;};
+template<> struct initializer_tag<std::initializer_list<std::basic_string<wchar_t >>> { typedef cmd_or_exe_tag<wchar_t>  type;};
+
+template<> struct initializer_tag<std::vector<char    *>> { typedef cmd_or_exe_tag<char>     type;};
+template<> struct initializer_tag<std::vector<wchar_t *>> { typedef cmd_or_exe_tag<wchar_t>  type;};
+
+template<> struct initializer_tag<std::initializer_list<char    *>> { typedef cmd_or_exe_tag<char>     type;};
+template<> struct initializer_tag<std::initializer_list<wchar_t *>> { typedef cmd_or_exe_tag<wchar_t>  type;};
+
+template<> struct initializer_tag<std::initializer_list<const char    *>> { typedef cmd_or_exe_tag<char>     type;};
+template<> struct initializer_tag<std::initializer_list<const wchar_t *>> { typedef cmd_or_exe_tag<wchar_t>  type;};
+
+template<> struct initializer_tag<shell_>
+{
+    typedef cmd_or_exe_tag<typename boost::process::filesystem::path::value_type> type;
+};
+
+template<> struct initializer_tag<boost::process::filesystem::path>
+{
+    typedef cmd_or_exe_tag<typename boost::process::filesystem::path::value_type> type;
+};
+
+template <typename Char>
+struct exe_setter_;
+template <typename Char, bool Append = false>
+struct arg_setter_;
+
+template <typename Char, bool Append>
+struct initializer_tag<arg_setter_<Char, Append>> { typedef cmd_or_exe_tag<Char> type;};
+
+template<typename Char> struct initializer_tag<exe_setter_<Char>> { typedef cmd_or_exe_tag<Char> type;};
+
+template<>
+struct initializer_builder<cmd_or_exe_tag<char>>;
+
+template<>
+struct initializer_builder<cmd_or_exe_tag<wchar_t>>;
+
+
+}}}
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_STRING_TRAITS_HPP_ */

include/boost/process/detail/traits/decl.hpp

@@ -1,80 +1,76 @@
-// Copyright (c) 2016 Klemens D. Morgenstern
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-
-
-#ifndef BOOST_PROCESS_DETAIL_TRAITS_DECL_HPP_
-#define BOOST_PROCESS_DETAIL_TRAITS_DECL_HPP_
-
-#include <boost/process/detail/config.hpp>
-#include <boost/none.hpp>
-#include <type_traits>
-
-#if defined(BOOST_POSIX_API)
-#include <boost/process/detail/posix/handler.hpp>
-#elif defined(BOOST_WINDOWS_API)
-#include <boost/process/detail/windows/handler.hpp>
-#endif
-
-
-namespace boost { namespace process { namespace detail {
-
-
-template<typename T>
-struct is_initializer : std::is_base_of<handler_base, T> {};
-
-
-template<typename T>
-struct is_initializer<T&> : std::is_base_of<handler_base, T> {};
-
-
-template<typename T>
-struct initializer_tag;// { typedef void type; };
-
-
-//remove const
-template<typename T>
-struct initializer_tag<const T> { typedef typename initializer_tag<T>::type type; };
-
-//remove &
-template<typename T>
-struct initializer_tag<T&> { typedef typename initializer_tag<T>::type type; };
-
-//remove const &
-template<typename T>
-struct initializer_tag<const T&> { typedef typename initializer_tag<T>::type type; };
-
-template<typename T>
-struct initializer_builder;
-
-
-template<typename First, typename ...Args>
-struct valid_argument_list;
-
-template<typename First>
-struct valid_argument_list<First>
-{
-    constexpr static bool value = is_initializer<First>::value || !std::is_void<typename initializer_tag<First>::type>::value;
-    typedef std::integral_constant<bool, value> type;
-};
-
-template<typename First, typename ...Args>
-struct valid_argument_list
-{
-    constexpr static bool my_value = is_initializer<First>::value || !std::is_void<typename initializer_tag<First>::type>::value;
-    constexpr static bool value = valid_argument_list<Args...>::value && my_value;
-    typedef std::integral_constant<bool, value> type;
-};
-
-struct error_tag;
-
-template<>
-struct initializer_tag<std::error_code>;
-
-
-}}}
-
-
-
-#endif /* BOOST_PROCESS_DETAIL_HANDLER_HPP_ */
+// Copyright (c) 2016 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+
+#ifndef BOOST_PROCESS_DETAIL_TRAITS_DECL_HPP_
+#define BOOST_PROCESS_DETAIL_TRAITS_DECL_HPP_
+
+#include <boost/process/detail/config.hpp>
+#include <boost/none.hpp>
+#include <type_traits>
+
+#if defined(BOOST_POSIX_API)
+#include <boost/process/detail/posix/handler.hpp>
+#elif defined(BOOST_WINDOWS_API)
+#include <boost/process/detail/windows/handler.hpp>
+#endif
+
+
+namespace boost { namespace process { namespace detail {
+
+
+template<typename T>
+struct is_initializer : std::is_base_of<handler_base, T> {};
+
+
+template<typename T>
+struct is_initializer<T&> : std::is_base_of<handler_base, T> {};
+
+
+template<typename T>
+struct initializer_tag;// { typedef void type; };
+
+
+//remove const
+template<typename T>
+struct initializer_tag<const T> { typedef typename initializer_tag<T>::type type; };
+
+//remove &
+template<typename T>
+struct initializer_tag<T&> { typedef typename initializer_tag<T>::type type; };
+
+//remove const &
+template<typename T>
+struct initializer_tag<const T&> { typedef typename initializer_tag<T>::type type; };
+
+template<typename T>
+struct initializer_builder;
+
+
+template<typename First, typename ...Args>
+struct valid_argument_list;
+
+template<typename First>
+struct valid_argument_list<First>
+{
+    constexpr static bool value = is_initializer<First>::value || !std::is_void<typename initializer_tag<First>::type>::value;
+    typedef std::integral_constant<bool, value> type;
+};
+
+template<typename First, typename ...Args>
+struct valid_argument_list
+{
+    constexpr static bool my_value = is_initializer<First>::value || !std::is_void<typename initializer_tag<First>::type>::value;
+    constexpr static bool value = valid_argument_list<Args...>::value && my_value;
+    typedef std::integral_constant<bool, value> type;
+};
+
+
+
+}}}
+
+
+
+#endif /* BOOST_PROCESS_DETAIL_HANDLER_HPP_ */