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C#测试用计算程序执行时间

2010-04-12 15:01 417 查看
using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
namespace MyTimeCost
{
class Program
{
[System.Runtime.InteropServices.DllImport("Kernel32.dll")]
static extern bool QueryPerformanceCounter(ref long count);
[System.Runtime.InteropServices.DllImport("Kernel32.dll")]
static extern bool QueryPerformanceFrequency(ref long count);
[STAThread]
static void Main(string[] args)
{
long count = 0;
long count1 = 0;
long freq = 0;
double result = 0;
QueryPerformanceFrequency(ref freq);
QueryPerformanceCounter(ref count);
//需要测试的模块
int heisetoufa;
for (heisetoufa = 1; heisetoufa < 100; heisetoufa++)
{
//Console.WriteLine("第" + heisetoufa + "行");
if (heisetoufa == 5000)
{
Thread.Sleep(10);
}
}
//需要测试的模块
QueryPerformanceCounter(ref count1);
count = count1 - count;
result = (double)(count) / (double)freq;
Console.WriteLine("耗时: {0} 秒", result);
Console.ReadLine();
}
}
}
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