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/*
Copyright (C) 2021 Carl Hetherington <cth@carlh.net>
This file is part of DCP-o-matic.
DCP-o-matic is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
DCP-o-matic is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with DCP-o-matic. If not, see <http://www.gnu.org/licenses/>.
*/
#include "barrier.h"
Barrier::Barrier (int count)
: _count(count)
{
}
void
Barrier::wait ()
{
boost::mutex::scoped_lock lm (_mutex);
++_waiting;
if (_waiting >= _count) {
_condition.notify_all();
_waiting = 0;
} else {
_condition.wait(lm);
}
}
void
Barrier::lower ()
{
boost::mutex::scoped_lock lm (_mutex);
_count = 0;
_condition.notify_all();
}
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