ceph/src/boost/boost/process/detail/windows/is_running.hpp

   1 // Copyright (c) 2106 Klemens D. Morgenstern
   2 //
   3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #ifndef BOOST_PROCESS_WINDOWS_IS_RUNNING_HPP
   7 #define BOOST_PROCESS_WINDOWS_IS_RUNNING_HPP
   8
   9 #include <boost/process/detail/config.hpp>
  10 #include <system_error>
  11 #include <cstdlib>
  12 #include <boost/winapi/process.hpp>
  13
  14 namespace boost { namespace process { namespace detail { namespace windows {
  15
  16 constexpr static ::boost::winapi::DWORD_ still_active = 259;
  17
  18
  19 struct child_handle;
  20
  21 inline bool is_running(const child_handle &p, int & exit_code)
  22 {
  23     ::boost::winapi::DWORD_ code;
  24     //single value, not needed in the winapi.
  25     if (!::boost::winapi::GetExitCodeProcess(p.process_handle(), &code))
  26         ::boost::process::detail::throw_last_error("GetExitCodeProcess() failed");
  27
  28     if (code == still_active)
  29         return true;
  30     else
  31     {
  32         exit_code = code;
  33         return false;
  34     }
  35 }
  36
  37 inline bool is_running(const child_handle &p, int & exit_code, std::error_code &ec) noexcept
  38 {
  39     ::boost::winapi::DWORD_ code;
  40     //single value, not needed in the winapi.
  41     if (!::boost::winapi::GetExitCodeProcess(p.process_handle(), &code))
  42         ec = ::boost::process::detail::get_last_error();
  43     else
  44         ec.clear();
  45
  46     if (code == still_active)
  47         return true;
  48     else
  49     {
  50         exit_code = code;
  51         return false;
  52     }
  53 }
  54
  55 inline bool is_running(int code)
  56 {
  57     return code == still_active;
  58 }
  59
  60 inline int eval_exit_status(int in ) {return in;}
  61
  62 }}}}
  63
  64 #endif