mirror of https://github.com/EspoTek/Labrador.git
126 lines
3.5 KiB
C#
126 lines
3.5 KiB
C#
#region Copyright(c) Travis Robinson
|
|
// Copyright (c) 2012 Travis Robinson <libusbdotnet@gmail.com>
|
|
// All rights reserved.
|
|
//
|
|
// HiPerfTimer.cs
|
|
//
|
|
// Created: 03.05.2012
|
|
// Last Updated: 03.05.2012
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
//
|
|
// * Redistributions of source code must retain the above copyright
|
|
// notice, this list of conditions and the following disclaimer.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
|
|
// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
|
|
// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL TRAVIS LEE ROBINSON
|
|
// BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
|
// THE POSSIBILITY OF SUCH DAMAGE.
|
|
#endregion
|
|
|
|
|
|
using System.ComponentModel;
|
|
using System.Runtime.InteropServices;
|
|
|
|
|
|
namespace Win32
|
|
{
|
|
internal class HiPerfTimer
|
|
{
|
|
#region Public Members
|
|
public HiPerfTimer()
|
|
{
|
|
startTime = 0;
|
|
stopTime = 0;
|
|
length = 0;
|
|
|
|
if (QueryPerformanceFrequency(out freq) == false)
|
|
{
|
|
// high-performance counter not supported
|
|
throw new Win32Exception();
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the bytes per second
|
|
/// </summary>
|
|
public double Bps
|
|
{
|
|
get
|
|
{
|
|
double duration = Duration;
|
|
if (duration.Equals(0.0)) return 0.0;
|
|
return length/duration;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the duration of the timer (in seconds)
|
|
/// </summary>
|
|
public double Duration
|
|
{
|
|
get
|
|
{
|
|
return (stopTime - startTime)/(double) freq;
|
|
}
|
|
}
|
|
|
|
/// <summary>
|
|
/// Gets the duration of the timer (in seconds)
|
|
/// </summary>
|
|
public long Ticks
|
|
{
|
|
get
|
|
{
|
|
long tDiff = stopTime - startTime;
|
|
tDiff = (tDiff*10000000)/freq;
|
|
|
|
return tDiff;
|
|
}
|
|
}
|
|
/// <summary>
|
|
/// Start the timer
|
|
/// </summary>
|
|
public void Start()
|
|
{
|
|
length = 0;
|
|
QueryPerformanceCounter(out startTime);
|
|
}
|
|
|
|
/// <summary>
|
|
/// Stop the timer
|
|
/// </summary>
|
|
public void Stop()
|
|
{
|
|
QueryPerformanceCounter(out stopTime);
|
|
}
|
|
|
|
public void Stop(int addLength)
|
|
{
|
|
QueryPerformanceCounter(out stopTime);
|
|
length += addLength;
|
|
}
|
|
#endregion
|
|
|
|
|
|
#region Private Members
|
|
[DllImport("Kernel32.dll")]
|
|
private static extern bool QueryPerformanceCounter(out long lpPerformanceCount);
|
|
|
|
[DllImport("Kernel32.dll")]
|
|
private static extern bool QueryPerformanceFrequency(out long lpFrequency);
|
|
|
|
private readonly long freq;
|
|
private long length;
|
|
private long startTime, stopTime;
|
|
#endregion
|
|
}
|
|
} |