ceph/src/boost/boost/process/detail/windows/null_in.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_WINDOWS_INITIALIZERS_NULL_IN_HPP
  11 #define BOOST_PROCESS_WINDOWS_INITIALIZERS_NULL_IN_HPP
  12
  13 #include <boost/winapi/process.hpp>
  14 #include <boost/winapi/handles.hpp>
  15 #include <boost/winapi/handle_info.hpp>
  16 #include <boost/process/detail/handler_base.hpp>
  17 #include <boost/process/detail/used_handles.hpp>
  18 #include <boost/process/detail/windows/file_descriptor.hpp>
  19
  20 namespace boost { namespace process { namespace detail { namespace windows {
  21
  22 struct null_in : public ::boost::process::detail::handler_base, ::boost::process::detail::uses_handles
  23 {
  24     file_descriptor source{"NUL", file_descriptor::read};
  25
  26     ::boost::winapi::HANDLE_ get_used_handles() const { return source.handle(); }
  27
  28
  29 public:
  30     template <class WindowsExecutor>
  31     void on_setup(WindowsExecutor &e) const
  32     {
  33         boost::winapi::SetHandleInformation(source.handle(),
  34                 boost::winapi::HANDLE_FLAG_INHERIT_,
  35                 boost::winapi::HANDLE_FLAG_INHERIT_);
  36
  37         e.startup_info.hStdInput = source.handle();
  38         e.startup_info.dwFlags  |= boost::winapi::STARTF_USESTDHANDLES_;
  39         e.inherit_handles = true;
  40     }
  41 };
  42
  43 }}}}
  44
  45 #endif