38 lines
1006 B
C#
38 lines
1006 B
C#
using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Threading;
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namespace System.Data.Linq.SqlClient {
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#if PERFORMANCE_BUILD
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class PerfTimer {
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long startTime;
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long stopTime;
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long frequency;
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public PerfTimer() {
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QueryPerformanceFrequency(out frequency);
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}
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public void Start() {
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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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QueryPerformanceCounter(out stopTime);
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}
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public long Duration {
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get { return (long)( 1000000.0 * (double)(stopTime - startTime) / (double) frequency ); }
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}
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[System.Runtime.InteropServices.DllImport("Kernel32.dll")]
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private static extern bool QueryPerformanceCounter(out long count);
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[System.Runtime.InteropServices.DllImport("Kernel32.dll")]
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private static extern bool QueryPerformanceFrequency(out long frequency);
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}
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#endif
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}
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