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Posted 25 Jul 2002
Licenced CPOL

High-Performance Timer in C#

, 29 Jul 2002
A C# class to provide exact time measurement in your applications.
using System;
using System.Runtime.InteropServices;
using System.ComponentModel;
using System.Threading;

namespace Win32
    internal class HiPerfTimer
        private static extern bool QueryPerformanceCounter(out long lpPerformanceCount);  

		private static extern bool QueryPerformanceFrequency(out long lpFrequency);
		private long startTime, stopTime;
		private long freq;
        // Constructor
		public HiPerfTimer()
            startTime = 0;
            stopTime  = 0;

            if (QueryPerformanceFrequency(out freq) == false)
                // high-performance counter not supported 
                throw new Win32Exception(); 
		// Start the timer
		public void Start()
            // lets do the waiting threads there work

			QueryPerformanceCounter(out startTime);
		// Stop the timer
		public void Stop()
		    QueryPerformanceCounter(out stopTime);
		// Returns the duration of the timer (in seconds)
        public double Duration
            	return (double)(stopTime - startTime) / (double) freq;

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Daniel Strigl
Austria Austria
No Biography provided

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