/*
* Copyright (C) 2010-2101 Alibaba Group Holding Limited.
*
* 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.
*/
package com.alibaba.otter.shared.common.utils;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import org.testng.annotations.Test;
import com.alibaba.otter.shared.common.BaseOtterTest;
import com.alibaba.otter.shared.common.utils.lock.BooleanMutex;
/**
* 锁对象测试
*
* @author jianghang 2011-9-23 上午10:40:32
* @version 4.0.0
*/
public class BooleanMutexTest extends BaseOtterTest {
@Test
public void test_init_true() {
BooleanMutex mutex = new BooleanMutex(true);
try {
mutex.get(); // 不会被阻塞
} catch (InterruptedException e) {
want.fail();
}
}
@Test
public void test_init_false() {
final BooleanMutex mutex = new BooleanMutex(false);
try {
final CountDownLatch count = new CountDownLatch(1);
ExecutorService executor = Executors.newCachedThreadPool();
executor.submit(new Callable() {
public Object call() throws Exception {
Thread.sleep(1000);
mutex.set(true);
count.countDown();
return null;
}
});
mutex.get(); // 会被阻塞，等异步线程释放锁对象
count.await();
executor.shutdown();
} catch (InterruptedException e) {
want.fail();
}
}
@Test
public void test_concurrent_true() {
try {
final BooleanMutex mutex = new BooleanMutex(true);
final CountDownLatch count = new CountDownLatch(10);
ExecutorService executor = Executors.newCachedThreadPool();
for (int i = 0; i < 10; i++) {
executor.submit(new Callable() {
public Object call() throws Exception {
mutex.get();
count.countDown();
return null;
}
});
}
count.await();
executor.shutdown();
} catch (InterruptedException e) {
want.fail();
}
}
@Test
public void test_concurrent_false() {
try {
final BooleanMutex mutex = new BooleanMutex(false);// 初始为false
final CountDownLatch count = new CountDownLatch(10);
ExecutorService executor = Executors.newCachedThreadPool();
for (int i = 0; i < 10; i++) {
executor.submit(new Callable() {
public Object call() throws Exception {
mutex.get();// 被阻塞
count.countDown();
return null;
}
});
}
Thread.sleep(1000);
mutex.set(true);
count.await();
executor.shutdown();
} catch (InterruptedException e) {
want.fail();
}
}
}