50 lines
1.1 KiB
C#
50 lines
1.1 KiB
C#
using System.Runtime.InteropServices;
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using System.Threading;
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using System;
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namespace BITKit
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{
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class PerformanceTimer
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{
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[DllImport("Kernel32.dll")]
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private static extern bool QueryPerformanceCounter(
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out long lpPerformanceCount);
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[DllImport("Kernel32.dll")]
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private static extern bool QueryPerformanceFrequency(
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out long lpFrequency);
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private long startTime, stopTime;
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private long freq;
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public PerformanceTimer()
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{
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startTime = 0;
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stopTime = 0;
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if (QueryPerformanceFrequency(out freq) == false)
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{
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throw new Exception("Timer not supported.");
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}
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}
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public void Start()
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{
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Thread.Sleep(0);
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QueryPerformanceCounter(out startTime);
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}
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public void Stop()
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{
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QueryPerformanceCounter(out stopTime);
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}
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public double Duration
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{
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get
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{
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return (double)(stopTime - startTime) / (double)freq;
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}
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}
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}
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} |