类代码
 
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;

namespace TxWeb.CnForums
{
    public class TxThread
    {
        public delegate void Delegate(object obj);

        /// <summary>
        
/// 执行指定的方法,如果在指定的时间之内没有完成,则中止
        
/// </summary>
        
/// <param name="func">任务过程</param>
        
/// <param name="threadID">帖子编号</param>
        
/// <param name="timeSpan">超时时间</param>
        
/// <param name="timeoutCallback">如果超时,则调用该方法</param>
        
/// <param name="updateID">变化主表记录编号</param>
        
/// <returns>是否正确执行完毕</returns>
        public static bool Call(Delegate func, object threadID, TimeSpan timeSpan, Delegate timeoutCallback, object updateID)
        {
            if (func == null)
                throw new ArgumentNullException("func");

            ManualResetEvent resetEvent = new ManualResetEvent(false);
            ManualResetEvent waitThreadEvent = new ManualResetEvent(false);

            Exception error = null;
            Thread thread = null;

            // 将任务加到线程当中
            ThreadPool.QueueUserWorkItem(delegate
            {

                thread = Thread.CurrentThread;
                try { func(threadID); }
                catch (ThreadAbortException) { }
                catch (Exception ex) { error = ex; }

                resetEvent.Set();
                // 每次线程执行结束都等待后续的处理逻辑
                waitThreadEvent.WaitOne();
            });

            try
            {
                // 等待任务的结束
                bool result = resetEvent.WaitOne(timeSpan, false);

                // 说明在执行过程中出现异常,直接抛出异常
                if (error != null)
                {
                    throw error;
                }

                if (!result)
                {
                    if (thread != null)
                    {
                        // 此时可以确保该线程没有开始运行新的任务
                        thread.Abort();
                        waitThreadEvent.Set();
                    }

                    if (timeoutCallback != null)
                        timeoutCallback(updateID);
                }

                return result;
            }
            finally
            {
                // 最后确保释放线程池线程
                waitThreadEvent.Set();
            }
        }
    }
}
 
调用:
                TxWeb.CnForums.TxThread.Delegate createHtml = new TxWeb.CnForums.TxThread.Delegate(CreateHtml);
                TxWeb.CnForums.TxThread.Delegate dealOverTime = new TxWeb.CnForums.TxThread.Delegate(DealOverTime);
                TxWeb.CnForums.TxThread.Call(createHtml, threadID, TimeSpan.FromSeconds(OverTime), dealOverTime, updateID);
posted on 2011-11-25 13:26  大江  阅读(253)  评论(1编辑  收藏  举报