Yuito-app-android/app/src/main/java/com/keylesspalace/tusky/CountUpDownLatch.java

41 lines
1.1 KiB
Java

/* Copyright 2017 Andrew Dawson
*
* This file is part of Tusky.
*
* Tusky 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 3 of the
* License, or (at your option) any later version.
*
* Tusky 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 Tusky. If not, see
* <http://www.gnu.org/licenses/>. */
package com.keylesspalace.tusky;
class CountUpDownLatch {
private int count;
CountUpDownLatch() {
this.count = 0;
}
synchronized void countDown() {
count--;
notifyAll();
}
synchronized void countUp() {
count++;
notifyAll();
}
synchronized void await() throws InterruptedException {
while (count != 0) {
wait();
}
}
}