scavengertimer.cs

HeyCacher 高性能缓存方案(带源码) 1. 文件的所有权益归上传用户所有 2. 未经权益所有人同意不得将文件中的内容挪作商业或盈利用途 3. CSDN下载频道仅提供交流平台

//===============================================================================
// CSDN HeyCache 
//===============================================================================
// 修改记录：[按最后修改时间倒排序]
// 2007.06.11 by tangwei
//
// 代码来源：参考于dotnet企业库3.0版
//===============================================================================
using System;
using System.Collections.Generic;
using System.Text;

namespace HeyCacher.Components.Scavenger
{
    /// <summary>
    /// 用于资源回收的定时器
    /// </summary>
    public sealed class ScavengerTimer : IDisposable
    {
        private System.Timers.Timer Timer;
        private System.Threading.Timer ThreadingTimer;

        /// <summary>
        /// 启动定时器
        /// </summary>
        /// <param name="callbackMethod">定时执行的回调，System.Timers.ElapsedEventHandler 或 System.Threading.TimerCallback</param>
        /// <param name="CycleInSeconds">间隔时间</param>
        public void StartPolling(object callbackMethod, int CycleInSeconds)
        {
            //参数检查
            if (callbackMethod == null)
            {
                throw new ArgumentNullException("callbackMethod");
            }
            if (CycleInSeconds <= 0)
            {
                throw new ArgumentException("InvalidExpirationPollCycleTime", "pollCycleInMilliseconds");
            }

            //时间转换
            int CycleInMilliseconds = CycleInSeconds * 1000;

            //建立并启动定时器
            if (callbackMethod is System.Timers.ElapsedEventHandler)
            {
                Timer = new System.Timers.Timer(CycleInMilliseconds);
                Timer.Enabled = true;
                Timer.Start();
                Timer.Elapsed += (System.Timers.ElapsedEventHandler)callbackMethod;
            }
            else if (callbackMethod is System.Threading.TimerCallback)
            {
                ThreadingTimer = new System.Threading.Timer((System.Threading.TimerCallback)callbackMethod, null, CycleInMilliseconds, CycleInMilliseconds);
            }
        }

        /// <summary>
        /// 
        /// </summary>
        public void StopPolling()
        {
            if (Timer != null)
            {
                Timer.Stop();
                Timer.Dispose();
                Timer = null;
            }
            if (ThreadingTimer != null)
            {
                ThreadingTimer.Dispose();
                ThreadingTimer = null;
            }

        }

        /// <summary>
        /// 
        /// </summary>
        void IDisposable.Dispose()
        {
            StopPolling();
        }
    }
}