1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/External/Aga.Controls/TimeCounter.cs	Sun May 27 15:16:19 2012 +0000
     1.3 @@ -0,0 +1,59 @@
     1.4 +using System;
     1.5 +using System.Collections.Generic;
     1.6 +using System.Text;
     1.7 +using System.Runtime.InteropServices;
     1.8 +using System.Diagnostics.CodeAnalysis;
     1.9 +
    1.10 +namespace Aga.Controls
    1.11 +{
    1.12 +	/// <summary>
    1.13 +	/// High resolution timer, used to test performance
    1.14 +	/// </summary>
    1.15 +	public static class TimeCounter
    1.16 +	{
    1.17 +		private static Int64 _start;
    1.18 +
    1.19 +		/// <summary>
    1.20 +		/// Start time counting
    1.21 +		/// </summary>
    1.22 +		public static void Start()
    1.23 +		{
    1.24 +			_start = 0;
    1.25 +			QueryPerformanceCounter(ref _start);
    1.26 +		}
    1.27 +
    1.28 +		public static Int64 GetStartValue()
    1.29 +		{
    1.30 +			Int64 t = 0;
    1.31 +			QueryPerformanceCounter(ref t);
    1.32 +			return t;
    1.33 +		}
    1.34 +
    1.35 +		/// <summary>
    1.36 +		/// Finish time counting
    1.37 +		/// </summary>
    1.38 +		/// <returns>time in seconds elapsed from Start till Finish	</returns>
    1.39 +		public static double Finish()
    1.40 +		{
    1.41 +			return Finish(_start);
    1.42 +		}
    1.43 +
    1.44 +		public static double Finish(Int64 start)
    1.45 +		{
    1.46 +			Int64 finish = 0;
    1.47 +			QueryPerformanceCounter(ref finish);
    1.48 +
    1.49 +			Int64 freq = 0;
    1.50 +			QueryPerformanceFrequency(ref freq);
    1.51 +			return (finish - start) / (double)freq;
    1.52 +		}
    1.53 +
    1.54 +		[DllImport("Kernel32.dll")]
    1.55 +		[return: MarshalAs(UnmanagedType.Bool)]
    1.56 +		static extern bool QueryPerformanceCounter(ref Int64 performanceCount);
    1.57 +
    1.58 +		[DllImport("Kernel32.dll")]
    1.59 +		[return: MarshalAs(UnmanagedType.Bool)]
    1.60 +		static extern bool QueryPerformanceFrequency(ref Int64 frequency);
    1.61 +	}
    1.62 +}