#region License
/*
* Copyright 2002-2008 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#endregion
#region Imports
using System;
#endregion
namespace Spring{
/// <summary>
/// A simple StopWatch implemetion for use in Performance Tests
/// </summary>
/// <example>
/// The following example shows the usage:
/// <code>
/// StopWatch watch = new StopWatch();
/// using (watch.Start("Duration: {0}"))
/// {
/// // do some work...
/// }
/// </code>
/// The format string passed to the start method is used to print the result message.
/// The example above will print <c>Duration: 0.123s</c>.
/// </example>
/// <author>Erich Eichinger</author>
public class StopWatch
{
private DateTime _startTime;
private TimeSpan _elapsed;
private class Stopper : IDisposable
{
private readonly StopWatch _owner;
private readonly string _format;
public Stopper(StopWatch owner, string format)
{
_owner = owner;
_format = format;
}
public void Dispose()
{
_owner.Stop(_format);
GC.SuppressFinalize(this);
}
}
/// <summary>
/// Starts the timer and returns and "handle" that must be disposed to stop the timer.
/// </summary>
/// <param name="outputFormat">the output format string, that is used to render the result message. Use '{0}' to print the elapsed timespan.</param>
/// <returns>the handle to dispose for stopping the timer</returns>
public IDisposable Start(string outputFormat)
{
Stopper stopper = new Stopper(this, outputFormat);
_startTime = DateTime.Now;
return stopper;
}
private void Stop(string outputFormat)
{
_elapsed = DateTime.Now.Subtract(_startTime);
if (outputFormat != null)
{
Console.WriteLine(outputFormat, _elapsed);
}
}
public DateTime StartTime
{
get { return _startTime; }
}
public TimeSpan Elapsed
{
get { return _elapsed; }
}
}
}
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