2
* Copyright © 2013 Canonical Ltd.
4
* This program is free software: you can redistribute it and/or modify it
5
* under the terms of the GNU Lesser General Public License version 3,
6
* as published by the Free Software Foundation.
8
* This program is distributed in the hope that it will be useful,
9
* but WITHOUT ANY WARRANTY; without even the implied warranty of
10
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
* GNU Lesser General Public License for more details.
13
* You should have received a copy of the GNU Lesser General Public License
14
* along with this program. If not, see <http://www.gnu.org/licenses/>.
16
* Authored by: Thomas Voß <thomas.voss@canonical.com>
19
#ifndef CROSS_PROCESS_SYNC_H_
20
#define CROSS_PROCESS_SYNC_H_
29
struct CrossProcessSync
31
static const int read_fd = 0;
32
static const int write_fd = 1;
37
throw std::runtime_error(strerror(errno));
40
~CrossProcessSync() noexcept
49
if (!write(fds[write_fd], std::addressof(value), sizeof(value)))
50
throw std::runtime_error(::strerror(errno));
53
void wait_for_signal_ready() const
56
if (!read(fds[read_fd], std::addressof(value), sizeof(value)))
57
throw std::runtime_error(::strerror(errno));
64
#endif // CROSS_PROCESS_SYNC_H_