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+// 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_ */