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using System;
using System.Threading;
namespace Pfz.Threading
{
/// <summary>
/// An auto reset event that uses only Monitor methods to work, avoiding
/// operating system events.
/// </summary>
public sealed class ManagedAutoResetEvent:
IAdvancedDisposable,
IEventWait
{
private readonly object _lock = new object();
private bool _value;
private bool _wasDisposed;
/// <summary>
/// Creates a new event, not signaled.
/// </summary>
public ManagedAutoResetEvent()
{
}
/// <summary>
/// Creates a new event, letting you say if it starts signaled or not.
/// </summary>
public ManagedAutoResetEvent(bool initialState)
{
_value = initialState;
}
/// <summary>
/// Disposes this event. After disposing, it is always set.
/// Calling Reset will not work and it will not throw exceptions, so you can
/// dispose it when there are threads waiting on it.
/// </summary>
public void Dispose()
{
lock(_lock)
{
_wasDisposed = true;
_value = true;
Monitor.PulseAll(_lock);
}
}
/// <summary>
/// Gets a value indicating if this event was disposed.
/// </summary>
public bool WasDisposed
{
get
{
return _wasDisposed;
}
}
/// <summary>
/// Resets this event (makes it non-signaled).
/// </summary>
public void Reset()
{
lock(_lock)
{
if (_wasDisposed)
return;
_value = false;
}
}
/// <summary>
/// Signals the event, releasing one thread waiting on it.
/// </summary>
public void Set()
{
lock(_lock)
{
_value = true;
Monitor.Pulse(_lock);
}
}
/// <summary>
/// Waits until this event is signaled.
/// </summary>
public void WaitOne()
{
lock(_lock)
{
while(!_value)
Monitor.Wait(_lock);
if (!_wasDisposed)
_value = false;
}
}
/// <summary>
/// Waits until this event is signaled or until the timeout arrives.
/// Return of true means it was signaled, false means timeout.
/// </summary>
public bool WaitOne(int millisecondsTimeout)
{
lock(_lock)
{
while(!_value)
if (!Monitor.Wait(_lock, millisecondsTimeout))
return false;
if (!_wasDisposed)
_value = false;
}
return true;
}
/// <summary>
/// Waits until this event is signaled or until the timeout arrives.
/// Return of true means it was signaled, false means timeout.
/// </summary>
public bool WaitOne(TimeSpan timeout)
{
lock(_lock)
{
while(!_value)
if (!Monitor.Wait(_lock, timeout))
return false;
if (!_wasDisposed)
_value = false;
}
return true;
}
}
}
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I started to program computers when I was 11 years old, as a hobbyist, programming in AMOS Basic and Blitz Basic for Amiga.
At 12 I had my first try with assembler, but it was too difficult at the time. Then, in the same year, I learned C and, after learning C, I was finally able to learn assembler (for Motorola 680x0).
Not sure, but probably between 12 and 13, I started to learn C++. I always programmed "in an object oriented way", but using function pointers instead of virtual methods.
At 15 I started to learn Pascal at school and to use Delphi. At 16 I started my first internship (using Delphi). At 18 I started to work professionally using C++ and since then I've developed my programming skills as a professional developer in C++ and C#, generally creating libraries that help other developers do their work easier, faster and with less errors.
Want more info or simply want to contact me?
Take a look at:
http://paulozemek.azurewebsites.net/
Or e-mail me at: paulozemek@outlook.com
Codeproject MVP 2012, 2015 & 2016
Microsoft MVP 2013-2014 (in October 2014 I started working at Microsoft, so I can't be a Microsoft MVP anymore).