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two minor fixes

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This commit is contained in:
Klemens David Morgenstern
2019-05-08 16:28:54 +07:00
parent 61fa15fa48
commit caa7b2fcc8
2 changed files with 10 additions and 6 deletions
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2
doc/concepts.qbk
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@@ -16,7 +16,7 @@ In that it is different than other facilities (like sockets) and provides anothe
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 not, that if the the same thread reads and write to a pipe, it will only talk to itself.
Though please note, that if the the same thread reads and write to a pipe, it will only talk to itself.
[section:anonymous Anonymous Pipes]

14
include/boost/process/detail/posix/pipe_out.hpp
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@@ -52,8 +52,10 @@ 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(), "dup3() failed");
::close(sink);
e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
if (sink != STDOUT_FILENO)
::close(sink);
::close(source);
}
@@ -63,7 +65,9 @@ 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");
::close(sink);
if (sink != STDOUT_FILENO)
::close(sink);
::close(source);
}
@@ -75,8 +79,8 @@ void pipe_out<1,2>::on_exec_setup(Executor &e) const
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");
::close(sink);
::close(source);
if ((sink != STDOUT_FILENO) && (sink != STDERR_FILENO))
::close(sink);
}
class async_pipe;