/// <summary>
/// Requests the purge of the inactive listeners.
/// </summary>
/// <param name="threshold">The collection count threshold.</param>
private void ScheduleCleanup(int threshold)
{
if (ValueSafe.LessExchange(ref gen1, int.MaxValue, threshold) < threshold)
{
Async.Start(Cleanup, source);
}
}
/// <summary>
/// Throws an exception if the <see cref="PropertyObserver"/> is disposed.
/// </summary>
private void CheckDisposed()
{
if (ValueSafe.Equals1(ref disposed))
{
throw Error.ObjectDisposed(this);
}
}
/// <summary>
/// Marks the event for cancellation.
/// </summary>
public void Cancel()
{
if (CanCancel)
{
ValueSafe.Increment0(ref canceled);
return;
}
throw Error.InvalidOperation(Strings.NotCancelable);
}
/// <summary>
/// Releases resources used by the <see cref="PropertyObserver"/>.
/// </summary>
/// <param name="disposing"><c>true</c> to release both managed and unmanaged resources; <c>false</c> to release only unmanaged resources.</param>
protected virtual void Dispose(bool disposing)
{
if (disposing && ValueSafe.Increment0(ref disposed))
{
lock (table)
{
foreach (KeyValuePair <INotifyPropertyChanged, Subscriber> pair in table)
{
Subscriber subscriber = pair.Value;
subscriber.Dispose();
PropertyChangedEvent.RemoveListener(pair.Key, subscriber);
}
table.Clear();
}
}
}
