1 // Copyright (c) 2006, 2007 Julio M. Merino Vidal
2 // Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
3 // Copyright (c) 2009 Boris Schaeling
4 // Copyright (c) 2010 Felipe Tanus, Boris Schaeling
5 // Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
6 // Copyright (c) 2016 Klemens D. Morgenstern
7 //
8 // Distributed under the Boost Software License, Version 1.0. (See accompanying
9 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
10
11 #ifndef BOOST_PROCESS_DETAIL_POSIX_PIPE_OUT_HPP
12 #define BOOST_PROCESS_DETAIL_POSIX_PIPE_OUT_HPP
13
14 #include <boost/process/pipe.hpp>
15 #include <boost/process/detail/posix/handler.hpp>
16 #include <unistd.h>
17
18 namespace boost { namespace process { namespace detail { namespace posix {
19
20 template<int p1, int p2>
21 struct pipe_out : handler_base_ext
22 {
23 int sink;
24 int source; //opposite end
25
pipe_outboost::process::detail::posix::pipe_out26 pipe_out(int sink, int source) : sink(sink), source(source) {}
27
28 template<typename T>
pipe_outboost::process::detail::posix::pipe_out29 pipe_out(T & p) : sink(p.native_sink()), source(p.native_source())
30 {
31 p.assign_sink(-1);
32 }
33
34 template<typename Executor>
on_errorboost::process::detail::posix::pipe_out35 void on_error(Executor &, const std::error_code &) const
36 {
37 ::close(sink);
38 }
39
40 template<typename Executor>
on_successboost::process::detail::posix::pipe_out41 void on_success(Executor &) const
42 {
43 ::close(sink);
44 }
45
46 template <typename Executor>
47 void on_exec_setup(Executor &e) const;
48 };
49
50 template<>
51 template<typename Executor>
on_exec_setup(Executor & e) const52 void pipe_out<1,-1>::on_exec_setup(Executor &e) const
53 {
54 if (::dup2(sink, STDOUT_FILENO) == -1)
55 e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
56
57 if (sink != STDOUT_FILENO)
58 ::close(sink);
59 ::close(source);
60 }
61
62 template<>
63 template<typename Executor>
on_exec_setup(Executor & e) const64 void pipe_out<2,-1>::on_exec_setup(Executor &e) const
65 {
66 if (::dup2(sink, STDERR_FILENO) == -1)
67 e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
68
69 if (sink != STDOUT_FILENO)
70 ::close(sink);
71 ::close(source);
72 }
73
74 template<>
75 template<typename Executor>
on_exec_setup(Executor & e) const76 void pipe_out<1,2>::on_exec_setup(Executor &e) const
77 {
78 if (::dup2(sink, STDOUT_FILENO) == -1)
79 e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
80 if (::dup2(sink, STDERR_FILENO) == -1)
81 e.set_error(::boost::process::detail::get_last_error(), "dup2() failed");
82 if ((sink != STDOUT_FILENO) && (sink != STDERR_FILENO))
83 ::close(sink);
84 }
85
86 class async_pipe;
87
88 template<int p1, int p2>
89 struct async_pipe_out : public pipe_out<p1, p2>
90 {
91 async_pipe &pipe;
92 template<typename AsyncPipe>
async_pipe_outboost::process::detail::posix::async_pipe_out93 async_pipe_out(AsyncPipe & p) : pipe_out<p1, p2>(p.native_sink(), p.native_source()), pipe(p)
94 {
95 }
96
97 template<typename Pipe, typename Executor>
closeboost::process::detail::posix::async_pipe_out98 static void close(Pipe & pipe, Executor &)
99 {
100 boost::system::error_code ec;
101 std::move(pipe).sink().close(ec);
102 }
103
104 template<typename Executor>
on_errorboost::process::detail::posix::async_pipe_out105 void on_error(Executor & exec, const std::error_code &)
106 {
107 close(pipe, exec);
108 }
109
110 template<typename Executor>
on_successboost::process::detail::posix::async_pipe_out111 void on_success(Executor &exec)
112 {
113 close(pipe, exec);
114 }
115 };
116
117
118 }}}}
119
120 #endif
121