/// <summary>
/// Creates this instance.
/// </summary>
/// <returns>Create new Disposable.</returns>
public IDisposable Create()
{
if (Interlocked.Increment(ref this.count) == 1)
{
this.state = DeferState.Deferred;
}
return(new Disposable(this.Decrement));
}
/// <summary>
/// Decrements this instance.
/// </summary>
private void Decrement()
{
if (Interlocked.Decrement(ref this.count) == 0)
{
if (this.state == DeferState.Update)
{
this.update();
}
this.state = DeferState.NotDeferred;
}
}
/// <summary>
/// Updates this instance.
/// </summary>
/// <returns>Is value updated [True] or defereed [False].</returns>
public bool Update()
{
switch (this.state)
{
case DeferState.Update:
return(false);
case DeferState.Deferred:
this.state = DeferState.Update;
return(false);
default:
this.update();
return(true);
}
}