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using System;
using System.Runtime.InteropServices;
namespace Pfz.Caching
{
/// <summary>
/// This struct works like a KeepAliveWeakReference, but it is internal
/// as it's uses the GCHandle directly, and can leak memory if used
/// unproperly.
/// </summary>
internal struct ExtendedGCHandle
{
#region Private handle
private GCHandle fHandle;
#endregion
#region Constructor
public ExtendedGCHandle(object target)
{
if (target == null)
throw new ArgumentNullException("target");
GCUtils.KeepAlive(target);
try
{
}
finally
{
fHandle = GCHandle.Alloc(target, GCHandleType.Weak);
}
}
#endregion
#region Free
public void Free()
{
if (fHandle.IsAllocated)
{
GCUtils.Expire(fHandle.Target);
fHandle.Free();
}
}
#endregion
#region IsAlive
public bool IsAlive
{
get
{
return fHandle.Target != null;
}
}
#endregion
#region Target
public object Target
{
get
{
object result = fHandle.Target;
GCUtils.KeepAlive(result);
return result;
}
set
{
GCUtils.Expire(fHandle.Target);
GCUtils.KeepAlive(value);
fHandle.Target = value;
}
}
#endregion
#region TargetAllowingExpiration
public object TargetAllowingExpiration
{
get
{
return fHandle.Target;
}
set
{
fHandle.Target = value;
}
}
#endregion
}
}
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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).