40 lines
961 B
C++
40 lines
961 B
C++
/* This file is part of Clementine.
|
|
Copyright 2016, John Maguire <john.maguire@gmail.com>
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
#include <QMutexLocker>
|
|
|
|
#include "latch.h"
|
|
|
|
CountdownLatch::CountdownLatch() : count_(0) {}
|
|
|
|
void CountdownLatch::Wait() {
|
|
|
|
QMutexLocker l(&mutex_);
|
|
++count_;
|
|
|
|
}
|
|
|
|
void CountdownLatch::CountDown() {
|
|
|
|
QMutexLocker l(&mutex_);
|
|
Q_ASSERT(count_ > 0);
|
|
--count_;
|
|
if (count_ == 0) {
|
|
emit Done();
|
|
}
|
|
|
|
}
|