From b2af03e76b3a1058d13091f4a6e716ce5af2a135 Mon Sep 17 00:00:00 2001
From: Oliver Kowalke <oliver.kowalke@gmx.de>
Date: Thu, 5 Mar 2015 17:26:19 +0100
Subject: [PATCH] update examples

---
 example/execution_context/Jamfile.v2    |  8 ++++
 example/execution_context/fibonacci.cpp | 36 ++++++++++++++++
 example/execution_context/parameter.cpp | 55 +++++++++++++++++++++++++
 3 files changed, 99 insertions(+)
 create mode 100644 example/execution_context/fibonacci.cpp
 create mode 100644 example/execution_context/parameter.cpp

diff --git a/example/execution_context/Jamfile.v2 b/example/execution_context/Jamfile.v2
index 5810d6f..1b9a610 100644
--- a/example/execution_context/Jamfile.v2
+++ b/example/execution_context/Jamfile.v2
@@ -37,3 +37,11 @@ exe segmented
 exe parser
     : parser.cpp
     ;
+
+exe fibonacci
+    : fibonacci.cpp
+    ;
+
+exe parameter
+    : parameter.cpp
+    ;
diff --git a/example/execution_context/fibonacci.cpp b/example/execution_context/fibonacci.cpp
new file mode 100644
index 0000000..7424fef
--- /dev/null
+++ b/example/execution_context/fibonacci.cpp
@@ -0,0 +1,36 @@
+
+//          Copyright Oliver Kowalke 2014.
+// 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)
+
+#include <cstdlib>
+#include <iostream>
+
+#include <boost/context/all.hpp>
+
+#define yield(x) p=x; mctx.resume();
+
+int main() {
+    int n=35;
+    int p=0;
+    boost::context::execution_context mctx( boost::context::execution_context::current() );
+    boost::context::execution_context ctx(
+        boost::context::fixedsize_stack(),
+        [n,&p,mctx]()mutable{
+            int a=0;
+            int b=1;
+            while(n-->0){
+                yield(a);
+                auto next=a+b;
+                a=b;
+                b=next;
+            }
+        });
+    for(int i=0;i<10;++i){
+        ctx.resume();
+        std::cout<<p<<std::endl;
+    }
+
+    std::cout << "main: done" << std::endl;
+}
diff --git a/example/execution_context/parameter.cpp b/example/execution_context/parameter.cpp
new file mode 100644
index 0000000..c33de73
--- /dev/null
+++ b/example/execution_context/parameter.cpp
@@ -0,0 +1,55 @@
+
+//          Copyright Oliver Kowalke 2014.
+// 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)
+
+#include <cstdlib>
+#include <exception>
+#include <iostream>
+#include <string>
+
+#include <boost/context/all.hpp>
+#include <boost/lexical_cast.hpp>
+
+class X{
+private:
+    int * inp_;
+    std::string outp_;
+    std::exception_ptr excptr_;
+    boost::context::execution_context caller_;
+    boost::context::execution_context callee_;
+
+public:
+    X():
+        inp_( nullptr),
+        outp_(),
+        excptr_(),
+        caller_(boost::context::execution_context::current()),
+        callee_(boost::context::fixedsize_stack(),
+             [=](){
+                try {
+                    int i = * inp_;
+                    outp_ = boost::lexical_cast<std::string>(i);
+                    caller_.resume();
+                } catch (...) {
+                    excptr_=std::current_exception();
+                }
+             })
+    {}
+
+    std::string operator()(int i){
+        inp_ = & i;
+        callee_.resume();
+        if(excptr_){
+            std::rethrow_exception(excptr_);
+        }
+        return outp_;
+    }
+};
+
+int main() {
+    X x;
+    std::cout<<x(7)<<std::endl;
+    std::cout << "done" << std::endl;
+}