content: /*
   * Copyright 1999-2012 Alibaba Group.
   *  
   * 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.cobar.util;
  
  import java.util.concurrent.locks.ReentrantLock;
  
  /**
   * @author xianmao.hexm
   */
  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.");
      }
  
  }
  