1 // Copyright (c) 2016 Klemens D. Morgenstern
2 //
3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
5
6 #ifndef BOOST_PROCESS_DETAIL_POSIX_GROUP_HPP_
7 #define BOOST_PROCESS_DETAIL_POSIX_GROUP_HPP_
8
9 #include <boost/process/detail/config.hpp>
10 #include <boost/process/detail/posix/child_handle.hpp>
11 #include <system_error>
12 #include <unistd.h>
13
14 namespace boost { namespace process { namespace detail { namespace posix {
15
16 struct group_handle
17 {
18 pid_t grp = -1;
19
20 typedef pid_t handle_t;
handleboost::process::detail::posix::group_handle21 handle_t handle() const { return grp; }
22
group_handleboost::process::detail::posix::group_handle23 explicit group_handle(handle_t h) :
24 grp(h)
25 {
26 }
27
28 group_handle() = default;
29
30 ~group_handle() = default;
31 group_handle(const group_handle & c) = delete;
group_handleboost::process::detail::posix::group_handle32 group_handle(group_handle && c) : grp(c.grp)
33 {
34 c.grp = -1;
35 }
36 group_handle &operator=(const group_handle & c) = delete;
operator =boost::process::detail::posix::group_handle37 group_handle &operator=(group_handle && c)
38 {
39 grp = c.grp;
40 c.grp = -1;
41 return *this;
42 }
43
addboost::process::detail::posix::group_handle44 void add(handle_t proc)
45 {
46 if (::setpgid(proc, grp))
47 throw_last_error();
48 }
addboost::process::detail::posix::group_handle49 void add(handle_t proc, std::error_code & ec) noexcept
50 {
51 if (::setpgid(proc, grp))
52 ec = get_last_error();
53 }
54
hasboost::process::detail::posix::group_handle55 bool has(handle_t proc)
56 {
57 return ::getpgid(proc) == grp;
58 }
hasboost::process::detail::posix::group_handle59 bool has(handle_t proc, std::error_code &) noexcept
60 {
61 return ::getpgid(proc) == grp;
62 }
63
validboost::process::detail::posix::group_handle64 bool valid() const
65 {
66 return grp != -1;
67 }
68 };
69
terminate(group_handle & p,std::error_code & ec)70 inline void terminate(group_handle &p, std::error_code &ec) noexcept
71 {
72 if (::killpg(p.grp, SIGKILL) == -1)
73 ec = boost::process::detail::get_last_error();
74 else
75 ec.clear();
76
77 p.grp = -1;
78 }
79
terminate(group_handle & p)80 inline void terminate(group_handle &p)
81 {
82 std::error_code ec;
83 terminate(p, ec);
84 boost::process::detail::throw_error(ec, "killpg(2) failed in terminate");
85 }
86
in_group()87 inline bool in_group()
88 {
89 return true;
90 }
91
92 }}}}
93
94 #endif /* BOOST_PROCESS_DETAIL_WINDOWS_GROUP_HPP_ */
95