ceph/src/boost/boost/process/detail/posix/child_handle.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_POSIX_CHILD_HPP
  11 #define BOOST_PROCESS_POSIX_CHILD_HPP
  12
  13 #include <utility>
  14 #include <system_error>
  15
  16 namespace boost { namespace process { namespace detail { namespace posix {
  17
  18 typedef ::pid_t pid_t;
  19
  20 struct child_handle
  21 {
  22     int pid {-1};
  23     explicit child_handle(int pid) : pid(pid)
  24     {}
  25
  26     child_handle()  = default;
  27     ~child_handle() = default;
  28
  29     child_handle(const child_handle & c) = delete;
  30     child_handle(child_handle && c) : pid(c.pid)
  31     {
  32         c.pid = -1;
  33     }
  34     child_handle &operator=(const child_handle & c) = delete;
  35     child_handle &operator=(child_handle && c)
  36     {
  37         pid = c.pid;
  38         c.pid = -1;
  39         return *this;
  40     }
  41
  42     int id() const
  43     {
  44         return pid;
  45     }
  46     bool in_group() const {return true;}
  47     bool in_group(std::error_code&) const noexcept {return true;}
  48
  49     typedef int process_handle_t;
  50     process_handle_t process_handle() const { return pid; }
  51
  52     bool valid() const
  53     {
  54         return pid != -1;
  55     }
  56 };
  57
  58 }}}}
  59
  60 #endif