ceph/src/boost/boost/process/detail/posix/close_out.hpp

   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 //
   7 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   8 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   9
  10 #ifndef BOOST_PROCESS_DETAIL_POSIX_CLOSE_OUT_HPP
  11 #define BOOST_PROCESS_DETAIL_POSIX_CLOSE_OUT_HPP
  12
  13 #include <boost/process/detail/used_handles.hpp>
  14 #include <boost/process/detail/posix/handler.hpp>
  15 #include <array>
  16
  17 namespace boost { namespace process { namespace detail { namespace posix {
  18
  19 template<int p1, int p2>
  20 struct close_out : handler_base_ext
  21 {
  22     template <class Executor>
  23     inline void on_exec_setup(Executor &e) const;
  24
  25     std::array<int, 2> get_used_handles() {return {p1 != -1 ? p1 : p2, p2 != -1 ? p2 : p1};}
  26 };
  27
  28 template<>
  29 template<typename Executor>
  30 void close_out<1,-1>::on_exec_setup(Executor &e) const
  31 {
  32     if (::close(STDOUT_FILENO) == -1)
  33         e.set_error(::boost::process::detail::get_last_error(), "close() failed");
  34
  35 }
  36
  37 template<>
  38 template<typename Executor>
  39 void close_out<2,-1>::on_exec_setup(Executor &e) const
  40 {
  41     if (::close(STDERR_FILENO) == -1)
  42         e.set_error(::boost::process::detail::get_last_error(), "close() failed");
  43 }
  44
  45 template<>
  46 template<typename Executor>
  47 void close_out<1,2>::on_exec_setup(Executor &e) const
  48 {
  49     if (::close(STDOUT_FILENO) == -1)
  50         e.set_error(::boost::process::detail::get_last_error(), "close() failed");
  51
  52     if (::close(STDERR_FILENO) == -1)
  53         e.set_error(::boost::process::detail::get_last_error(), "close() failed");
  54 }
  55
  56 }}}}
  57
  58 #endif