UpdatableCountDownLatch.java revision 4961ad31d9a877e3a68566fb5d4b33b7f79ce44e 
1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.camera.async;
18
19import java.util.concurrent.CountDownLatch;
20
21import javax.annotation.Nonnull;
22
23/**
24 * Counts down on each update.
25 */
26public class UpdatableCountDownLatch extends CountDownLatch implements Updatable<Void> {
27    public UpdatableCountDownLatch(int count) {
28        super(count);
29    }
30
31    @Override
32    public void update(@Nonnull Void v) {
33        countDown();
34    }
35}
36