detail/posix/group_ref.hpp

0001 // Copyright (c) 2016 Klemens D. Morgenstern
0002 //
0003 // Distributed under the Boost Software License, Version 1.0. (See accompanying
0004 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
0005
0006 #ifndef BOOST_PROCESS_DETAIL_POSIX_GROUP_REF_HPP_
0007 #define BOOST_PROCESS_DETAIL_POSIX_GROUP_REF_HPP_
0008
0009 #include <boost/process/detail/config.hpp>
0010 #include <boost/process/detail/posix/group_handle.hpp>
0011 #include <boost/process/detail/posix/handler.hpp>
0012 #include <unistd.h>
0013
0014
0015 namespace boost { namespace process {
0016
0017 namespace detail { namespace posix {
0018
0019
0020
0021 struct group_ref : handler_base_ext
0022 {
0023     group_handle & grp;
0024
0025
0026     explicit group_ref(group_handle & g) :
0027                 grp(g)
0028     {}
0029
0030     template <class Executor>
0031     void on_exec_setup(Executor&) const
0032     {
0033         if (grp.grp == -1)
0034             ::setpgid(0, 0);
0035         else
0036             ::setpgid(0, grp.grp);
0037     }
0038
0039     template <class Executor>
0040     void on_success(Executor& exec) const
0041     {
0042         if (grp.grp == -1)
0043             grp.grp = exec.pid;
0044
0045     }
0046
0047 };
0048
0049 }}}}
0050
0051
0052 #endif /* BOOST_PROCESS_DETAIL_POSIX_GROUP_REF_HPP_ */