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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
/// <license>
/// This is a port of the SciMark2a Java Benchmark to C# by
/// Chris Re (cmr28@cornell.edu) and Werner Vogels (vogels@cs.cornell.edu)
///
/// For details on the original authors see http://math.nist.gov/scimark2
///
/// This software is likely to burn your processor, bitflip your memory chips
/// anihilate your screen and corrupt all your disks, so you it at your
/// own risk.
/// </license>
using System;
namespace SciMark2
{
/// <summary>
/// Provides a stopwatch to measure elapsed time.
/// </summary>
/// <author>
/// Roldan Pozo
/// </author>
/// <version>
/// 14 October 1997, revised 1999-04-24
/// </version>
///
public class Stopwatch
{
private bool _running;
private double _last_time;
private double _total;
///
/// <summary>R
/// eturn system time (in seconds)
/// </summary>
public static double seconds()
{
return (System.DateTime.Now.Ticks * 1.0E-7);
}
public virtual void reset()
{
_running = false;
_last_time = 0.0;
_total = 0.0;
}
public Stopwatch()
{
reset();
}
///
/// <summary>
/// Start (and reset) timer
/// </summary>
public virtual void start()
{
if (!_running)
{
_running = true;
_total = 0.0;
_last_time = seconds();
}
}
///
/// <summary>
/// Resume timing, after stopping. (Does not wipe out accumulated times.)
/// </summary>
public virtual void resume()
{
if (!_running)
{
_last_time = seconds();
_running = true;
}
}
///
/// <summary>
/// Stop timer
/// </summary>
public virtual double stop()
{
if (_running)
{
_total += seconds() - _last_time;
_running = false;
}
return _total;
}
///
/// <summary>
/// return the elapsed time (in seconds)
/// </summary>
public virtual double read()
{
if (_running)
{
_total += seconds() - _last_time;
_last_time = seconds();
}
return _total;
}
}
}
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