ASP.NET 定时器回调方法的重入

话不多说，请看代码：

using system;
using system.collections.generic;
using system.text;
namespace net.mst.sixth.reenter
{
  class reenter
  {
    //用来造成线程同步问题的静态成员
    private static int testint1=0;
    private static int testint2 = 0;
    private static object locko = new object();
    static void main(string[] args)
    {
      console.writeline("system.timers.timer 回调方法重入测试：");
      timerstimerreenter();
      //这里确保已经开始的回调方法有机会结束
      system.threading.thread.sleep(2 * 1000);
      console.writeline("system.threading.timer 回调方法重入测试：");
      threadingtimerreenter();
      console.read();
    }
    /// <summary>
    /// 展示system.timers.timer的回调方法重入
    /// </summary>
    static void timerstimerreenter()
    {
      system.timers.timer timer = new system.timers.timer();
      timer.interval = 100;    //100毫秒
      timer.elapsed += timerstimerhandler;
      timer.start();
      system.threading.thread.sleep(2 * 1000); //运行2秒
      timer.stop();
    }
    /// <summary>
    /// 展示system.threading.timer的回调方法重入
    /// </summary>
    static void threadingtimerreenter()
    {
      //100毫秒
      using (system.threading.timer timer = new system.threading.timer
       (new system.threading.timercallback(threadingtimerhandler), null, 0, 100))
      {
        system.threading.thread.sleep(2 * 1000); //运行2秒
      }
    }
    /// <summary>
    /// system.timers.timer的回调方法
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="args"></param>
    private static void timerstimerhandler(object sender,eventargs args)
    {
      lock (locko)
      {
        console.writeline("测试整数：" + testint1.tostring());
        //睡眠10秒，保证方法重入
        system.threading.thread.sleep(300);
        testint1++;
        console.writeline("自增1后测试整数：" + testint1.tostring());
      }
    }
    /// <summary>
    /// system.threading.timer的回调方法
    /// </summary>
    /// <param name="state"></param>
    private static void threadingtimerhandler(object state)
    {
      lock (locko)
      {
        console.writeline("测试整数：" + testint2.tostring());
        //睡眠10秒，保证方法重入
        system.threading.thread.sleep(300);
        testint2++;
        console.writeline("自增1后测试整数：" + testint2.tostring());
      }
    }
  }
}

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