c# 线程池如何同步请求并计算执行时间

今天写一个二进制文件查询耗时统计。

写完线程池，发现无法统计，全是异步执行。

经高人指点得知AutoRestEvent 类可以解决。但是随后又发现在AutoRestEvent.WriteAll()的时候，参数WriteHandle[]居然最大只支持64个元素。。。

果然又是以伏笔啊。显然高人并不是想给我全部写下来，还是想让我自己去查找和理解。。

不过还好不负厚望啊。。终于得以解决，下面贴出代码。予以分享:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.IO;
using System.Diagnostics;
using System.Net;

namespace ipfrom
{
    public partial class Form1 : Form
    {

        Stopwatch logWatch = new Stopwatch();
        Stopwatch datWatch = new Stopwatch();
        DataTable dt=new DataTable();
        private Thread logThread;
        List<string> iplist = new List<string>();
        private delegate void writeTxt(string txt);
        private delegate void setBar(int v);
        private delegate void setLabel(string str);
        private int logMax = 10000;
        private long extime = 0;

        public Form1()
        {
            InitializeComponent();
            //读取日志文件
            //readLog();
        }
        private void setLabelText(string str)
        {
            if (this.textBox3.InvokeRequired)
            {
                setLabel sl = new setLabel(setLabelText);
                this.BeginInvoke(sl, new object[] { str });
                return;
            }
            this.textBox3.AppendText(str);
        }


        private void outtxt(string txt)
        {
            if (this.textBox2.InvokeRequired)
            {
                writeTxt wt = new writeTxt(outtxt);
                this.BeginInvoke(wt,new object[]{txt});
                return;
            }
            this.textBox2.AppendText(txt);
        }

        private void setBarValue(int v)
        {
            if (this.progressBar1.InvokeRequired)
            {
                setBar sb = new setBar(setBarValue);
                this.BeginInvoke(sb, new object[] { v });
                return;
            }
            this.progressBar1.Value = v;
        }



        private void readLog()
        {
            logWatch.Start();
            StreamReader sr = new StreamReader(@"ex12092000.log");
            sr.ReadLine();
            sr.ReadLine();
            sr.ReadLine();
            sr.ReadLine();
            sr.ReadLine();
            for (int i = 0; i < (logMax); i++)
            {
                string ip = sr.ReadLine();
                string[] ips=ip.Split(' ');
                iplist.Add(ips[9]);
                setBarValue(i+1);
            }
            sr.Close();
            sr.Dispose();
            logWatch.Stop();
            TimeSpan tspan = logWatch.Elapsed;
            double avgElapsed = logWatch.ElapsedMilliseconds / logMax;
            setLabelText("执行:" + logMax.ToString()+ "次  耗时：" + logWatch.ElapsedMilliseconds + "毫秒  平均每次耗时:" + avgElapsed.ToString());
        }

        public void readDat(int start,int end)
        {
            datWatch.Start();
            try
            {
              LookupService ls = new LookupService(@"GeoLiteCity.dat", LookupService.GEOIP_STANDARD);
                //Location l = ls.getLocation(this.textBox1.Text.Trim());
                for (int i = start; i < end; i++)
                {
                    Location l = ls.getLocation(iplist[i]);
                    if (l != null)
                    {
                        string str = string.Format("ip:{9} [国家代码：{0} 国家名称: {1} 范围：{2} 城市：{3} 邮政编码：{4} 经纬度：{5},{6} 区域代码：{7} 范围代码：{8}]\r\n", l.countryCode, l.countryName, l.region, l.city, l.postalCode, l.latitude, l.longitude, l.area_code, l.regionName, iplist[i]);
                        //this.textBox2.AppendText(str);
                        outtxt(str);
                    }
                    else
                    {
                        //this.textBox2.Text = "IP Address Not Found\n";
                        outtxt("IP Address Not Found\n");
                    }
                    //setBarValue(i+1);
                }
            }
            catch (System.Exception ez)
            {
                //this.textBox2.Text = "Error" + ez.Message + "\n";
                outtxt("Error" + ez.Message + "\n");
            }
            //finally
            //{
            //    ls.close();
            //}
            datWatch.Stop();
            double avgElapsed = datWatch.ElapsedMilliseconds / logMax;
            double avgSecond = datWatch.ElapsedMilliseconds / 1000;
            setLabelText("耗时：" + datWatch.ElapsedMilliseconds + "毫秒 "+avgSecond+"秒  平均每次耗时:" + avgElapsed.ToString()+"毫秒\r\n");
        }

        public void readDat(object objs)
        {
            List<object> list = objs as List<object>;
            string ip = list[0].ToString();
            //AutoResetEvent are = list[1] as AutoResetEvent;
            //ManualResetEvent are = list[1] as ManualResetEvent;
            CountdownEvent cde = list[1] as CountdownEvent;
            try
            {
                LookupService ls = new LookupService(@"GeoLiteCity.dat", LookupService.GEOIP_STANDARD);
                //Location l = ls.getLocation(this.textBox1.Text.Trim());
                //for (int i = start; i < end; i++)
                {
                    Location l = ls.getLocation(ip);
                    if (l != null)
                    {
                        string str = string.Format("ip:{9} [国家代码：{0} 国家名称: {1} 范围：{2} 城市：{3} 邮政编码：{4} 经纬度：{5},{6} 区域代码：{7} 范围代码：{8}]\r\n", l.countryCode, l.countryName, l.region, l.city, l.postalCode, l.latitude, l.longitude, l.area_code, l.regionName, ip);
                        //this.textBox2.AppendText(str);
                        outtxt(str);
                    }
                    else
                    {
                        //this.textBox2.Text = "IP Address Not Found\n";
                        outtxt("IP Address Not Found\n");
                    }
                    //setBarValue(i+1);
                }
            }
            catch (System.Exception ez)
            {
                //this.textBox2.Text = "Error" + ez.Message + "\n";
                outtxt("Error" + ez.ToString() + "\n");
            }
            //are.Set();
            cde.Signal();
            //finally
            //{
            //    ls.close();
            //}
            //double avgElapsed = datWatch.ElapsedMilliseconds / logMax;
           // double avgSecond = datWatch.ElapsedMilliseconds / 1000;
            //setLabelText("耗时：" + datWatch.ElapsedMilliseconds + "毫秒 " + avgSecond + "秒  平均每次耗时:" + avgElapsed.ToString() + "毫秒\r\n");
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.textBox3.Text = string.Empty;
            this.progressBar1.Minimum = 1;
            this.progressBar1.Maximum = logMax;
            int avgReadCount = logMax / 20;
            int start=0;
            ThreadPool.SetMaxThreads(20, 20);
            ThreadPool.SetMinThreads(1, 1);
            datWatch.Start();
            CountdownEvent cde = new CountdownEvent(iplist.Count);
            int i = 0;
            foreach (string ip in iplist)
            {
                List<object> objs=new List<object>();
                objs.Add(ip);
                objs.Add(cde);
                WaitCallback wcb = new WaitCallback(readDat);
                ThreadPool.QueueUserWorkItem(wcb,objs);
                i++;
            }
            cde.Wait();
            datWatch.Stop();
            this.textBox3.Text = "耗时:" + datWatch.ElapsedMilliseconds.ToString();

            //WaitCallback wcb = delegate { readDat(0, iplist.Count); };
            //ThreadPool.QueueUserWorkItem(wcb);

            //for (int i = 0; i < 20; i++)
            //{
            //    //ThreadStart ipst = delegate { readDat(start, i * avgReadCount, i); };
            //    //ipThread = new Thread(ipst);
            //    //ipThread.Start();
            //    WaitCallback wcb = delegate { readDat(start,i*avgReadCount); };
            //    ThreadPool.QueueUserWorkItem(wcb);
            //    if (i >= 20)
            //    {
            //        start = 0;
            //    }
            //    else
            //    {
            //        start = i * avgReadCount;
            //    }
            //}

            //try
            //{
            //    LookupService ls = new LookupService(@"D:\workspace\Test\IPSerchar\ipfrom\GeoLiteCity.dat", LookupService.GEOIP_STANDARD);
            //    for (int i = 0; i < iplist.Count; i++)
            //    {
            //        Location l = ls.getLocation(iplist[i]);
            //        if (l != null)
            //        {
            //            string str = string.Format("ip:{9} [国家代码：{0} 国家名称: {1} 范围：{2} 城市：{3} 邮政编码：{4} 经纬度：{5},{6} 区域代码：{7} 范围代码：{8}]\r\n", l.countryCode, l.countryName, l.region, l.city, l.postalCode, l.latitude, l.longitude, l.area_code, l.regionName,iplist[i]);
            //            this.textBox2.AppendText(str);
            //        }
            //        else
            //        {
            //            this.textBox2.Text = "IP Address Not Found\n";
            //        }
            //    }
            //}
            //catch (System.Exception ez)
            //{
            //    this.textBox2.Text="Error" + ez.Message + "\n";
            //}
        }

        private void button2_Click(object sender, EventArgs e)
        {
            logMax = Int32.Parse(this.textBox1.Text.Trim());
            this.progressBar1.Minimum = 1;
            this.progressBar1.Maximum = logMax;
            logThread = new Thread(new ThreadStart(readLog));
            logThread.Start();
            
        }
    }

} 

有些人贴代码不喜欢贴全，我这人就喜欢贴全。。。大家可以看下