// Copyright (c) 2016 Klemens D. Morgenstern
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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#ifndef BOOST_PROCESS_DETAIL_POSIX_GROUP_HPP_
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#define BOOST_PROCESS_DETAIL_POSIX_GROUP_HPP_
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#include <boost/process/detail/config.hpp>
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#include <boost/process/detail/posix/child_handle.hpp>
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#include <system_error>
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#include <unistd.h>
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namespace boost { namespace process { namespace detail { namespace posix {
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struct group_handle
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{
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pid_t grp = -1;
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typedef pid_t handle_t;
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handle_t handle() const { return grp; }
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explicit group_handle(handle_t h) :
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grp(h)
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{
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}
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group_handle() = default;
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~group_handle() = default;
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group_handle(const group_handle & c) = delete;
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group_handle(group_handle && c) : grp(c.grp)
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{
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c.grp = -1;
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}
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group_handle &operator=(const group_handle & c) = delete;
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group_handle &operator=(group_handle && c)
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{
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grp = c.grp;
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c.grp = -1;
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return *this;
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}
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void add(handle_t proc)
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{
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if (::setpgid(proc, grp))
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throw_last_error();
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}
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void add(handle_t proc, std::error_code & ec) noexcept
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{
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if (::setpgid(proc, grp))
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ec = get_last_error();
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}
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bool has(handle_t proc)
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{
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return ::getpgid(proc) == grp;
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}
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bool has(handle_t proc, std::error_code &) noexcept
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{
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return ::getpgid(proc) == grp;
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}
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bool valid() const
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{
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return grp != -1;
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}
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};
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inline void terminate(group_handle &p, std::error_code &ec) noexcept
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{
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if (::killpg(p.grp, SIGKILL) == -1)
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ec = boost::process::detail::get_last_error();
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else
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ec.clear();
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p.grp = -1;
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}
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inline void terminate(group_handle &p)
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{
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std::error_code ec;
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terminate(p, ec);
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boost::process::detail::throw_error(ec, "killpg(2) failed in terminate");
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}
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inline bool in_group()
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{
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return true;
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}
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}}}}
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#endif /* BOOST_PROCESS_DETAIL_WINDOWS_GROUP_HPP_ */
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