/*
* Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software;Designed and Developed mainly by many Chinese
* opensource volunteers. you can redistribute it and/or modify it under the
* terms of the GNU General Public License version 2 only, as published by the
* Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Any questions about this component can be directed to it's project Web address
* https://code.google.com/p/opencloudb/.
*
*/
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.");
}
}