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.atomic.AtomicBoolean;
  import java.util.concurrent.locks.ReentrantLock;
  
  /**
   * @author mycat
   */
  public class LockPerfMain {
  
      public void tReentrantLock() {
          System.currentTimeMillis();
          ReentrantLock lock = new ReentrantLock();
  
          long t1 = System.currentTimeMillis();
          for (int i = 0; i < 10000000; i++) {
              if (lock.tryLock()) {
                  try {
                      // ...
                  } finally {
                      lock.unlock();
                  }
              }
          }
          long t2 = System.currentTimeMillis();
  
          System.out.println("take time:" + (t2 - t1) + " ms.");
      }
  
      public void tAtomicBoolean() {
          System.currentTimeMillis();
          AtomicBoolean atomic = new AtomicBoolean();
  
          long t1 = System.currentTimeMillis();
          for (int i = 0; i < 10000000; i++) {
              if (atomic.compareAndSet(false, true)) {
                  try {
                      // ...
                  } finally {
                      atomic.set(false);
                  }
              }
          }
          long t2 = System.currentTimeMillis();
  
          System.out.println("take time:" + (t2 - t1) + " ms.");
      }
  
  }