/*
* Copyright 1999-2010 Luca Garulli (l.garulli--at--orientechnologies.com)
*
* 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.orientechnologies.orient.test.java.lang;
import com.orientechnologies.common.concur.resource.OSharedResourceExternal;
public class LockSpeedTest {
private static final long MAX = 10000000;
public static final void main(String[] args) {
OSharedResourceExternal lock = new OSharedResourceExternal();
long timer = System.currentTimeMillis();
for (int i = 0; i < MAX; ++i) {
}
final long fixed = System.currentTimeMillis() - timer;
for (int i = 0; i < MAX; ++i) {
lock.acquireSharedLock();
lock.releaseSharedLock();
}
System.out.println("Read Locks: " + (System.currentTimeMillis() - timer - fixed));
timer = System.currentTimeMillis();
for (int i = 0; i < MAX; ++i) {
lock.acquireExclusiveLock();
lock.releaseExclusiveLock();
}
System.out.println("Write Locks: " + (System.currentTimeMillis() - timer - fixed));
timer = System.currentTimeMillis();
for (int i = 0; i < MAX; ++i) {
synchronized (lock) {
}
}
System.out.println("Simple Locks: " + (System.currentTimeMillis() - timer - fixed));
}
}