学习笔记:给某个方法设定执行超时时间

实现代码:

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namespace ConsoleApplication4 {     public delegate void DoHandler();       public class TimeOut     {         private ManualResetEvent mTimeoutObject;         //标记变量         private bool mBoTimeout;         public DoHandler Do;           public TimeOut()         {             //  初始状态为 停止             this.mTimeoutObject = new ManualResetEvent(true);         }         ///<summary>         /// 指定超时时间 异步执行某个方法         ///</summary>         ///<returns>执行 是否超时</returns>         public bool DoWithTimeout(TimeSpan timeSpan)         {             if (this.Do == null)             {                 return false;             }             this.mTimeoutObject.Reset();             this.mBoTimeout = true; //标记             this.Do.BeginInvoke(DoAsyncCallBack, null);             // 等待 信号Set             if (!this.mTimeoutObject.WaitOne(timeSpan, false))             {                 this.mBoTimeout = true;             }             return this.mBoTimeout;         }         ///<summary>         /// 异步委托 回调函数         ///</summary>         ///<param name="result"></param>         private void DoAsyncCallBack(IAsyncResult result)         {             try             {                 this.Do.EndInvoke(result);                 // 指示方法的执行未超时                 this.mBoTimeout = false;             }             catch (Exception ex)             {                 Console.WriteLine(ex.Message);                 this.mBoTimeout = true;             }             finally             {                 this.mTimeoutObject.Set();             }           }     } }

 测试代码:

 

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namespace ConsoleApplication4 {     class Program     {         private static Stopwatch watch;         private static System.Threading.Timer timer;           [STAThread]         static void Main(string[] args)         {             watch = new Stopwatch();             TimeOut timeout = new TimeOut();             timeout.Do = new Program().DoSomething;             watch.Start();             timer = new System.Threading.Timer(timerCallBack, null, 0, 500);             Console.WriteLine("4秒超时开始执行");             bool bo = timeout.DoWithTimeout(new TimeSpan(0, 0, 0, 4));             Console.WriteLine(string.Format("4秒超时执行结果,是否超时：{0}", bo));             Console.WriteLine("***************************************************");               timeout = new TimeOut();             timeout.Do = new Program().DoSomething;             Console.WriteLine("6秒超时开始执行");             bo = timeout.DoWithTimeout(new TimeSpan(0, 0, 0, 6));             Console.WriteLine(string.Format("6秒超时执行结果,是否超时：{0}", bo));               timerCallBack(null);               watch.Stop();             timer.Dispose();             Console.ReadLine();           }           static void timerCallBack(object obj)         {             Console.WriteLine(string.Format("运行时间:{0}秒", watch.Elapsed.TotalSeconds.ToString("F2")));         }         public void  DoSomething()         {             // 休眠 5秒             System.Threading.Thread.Sleep(new TimeSpan(0, 0, 0, 5));         }       } }

 

执行结果: