content: /*
   * Copyright (C) 2016-2023 ActionTech.
   * based on code by MyCATCopyrightHolder Copyright (c) 2013, OpenCloudDB/MyCAT.
   * License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher.
   */
  package com.actiontech.dble.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.");
      }
  
  }