/*
* Copyright 2012-2015 org.opencloudb.
*
* 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 org.opencloudb.util;
import java.util.concurrent.locks.ReentrantLock;
/**
* @author mycat
*/
public class SyncPerfMain {
long i = 0L;
private final Object lockA = new Object();
private final ReentrantLock lockB = new ReentrantLock();
final void tLockA() {
final Object lock = this.lockA;
synchronized (lock) {
i++;
}
}
final void tLockB() {
final ReentrantLock lock = this.lockB;
lock.lock();
try {
i++;
} finally {
lock.unlock();
}
}
public static void main(String[] args) {
int count = 10000000;
SyncPerfMain test = new SyncPerfMain();
System.currentTimeMillis();
long t1 = System.currentTimeMillis();
for (int i = 0; i < count; i++) {
test.tLockA();
// test.testLockB();
}
long t2 = System.currentTimeMillis();
System.out.println("take:" + (t2 - t1) + " ms.");
}
}