text: // Copyright (c) 2016 Klemens D. Morgenstern
  //
  // Distributed under the Boost Software License, Version 1.0. (See accompanying
  // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  
  #ifndef BOOST_PROCESS_DETAIL_POSIX_GROUP_REF_HPP_
  #define BOOST_PROCESS_DETAIL_POSIX_GROUP_REF_HPP_
  
  #include <boost/process/detail/config.hpp>
  #include <boost/process/detail/posix/group_handle.hpp>
  #include <boost/process/detail/posix/handler.hpp>
  #include <unistd.h>
  
  
  namespace boost { namespace process {
  
  namespace detail { namespace posix {
  
  
  
  struct group_ref : handler_base_ext
  {
      group_handle & grp;
  
  
      explicit group_ref(group_handle & g) :
                  grp(g)
      {}
  
      template <class Executor>
      void on_exec_setup(Executor& exec) const
      {
          if (grp.grp == -1)
              ::setpgid(0, 0);
          else
              ::setpgid(0, grp.grp);
      }
  
      template <class Executor>
      void on_success(Executor& exec) const
      {
          if (grp.grp == -1)
              grp.grp = exec.pid;
  
      }
  
  };
  
  }}}}
  
  
  #endif /* BOOST_PROCESS_DETAIL_POSIX_GROUP_REF_HPP_ */
  