// 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