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