// End should be called when the End function for the asynchronous operation is complete. It
// ensures the asynchronous operation is complete, and does some common validation.
internal static EtwTrackingAsyncResult End(EtwTrackingAsyncResult asyncResult)
{
if (asyncResult == null)
{
throw new ArgumentException(Resources.InvalidAsyncResult);
}
if (asyncResult._endCalled)
{
throw new InvalidOperationException(Resources.AsyncResultAlreadyEnded);
}
asyncResult._endCalled = true;
if (!asyncResult._isCompleted)
{
asyncResult.AsyncWaitHandle.WaitOne();
}
if (asyncResult._manualResetEvent != null)
{
// was manualResetEvent.Close();
asyncResult._manualResetEvent.Dispose();
}
if (asyncResult._exception != null)
{
throw asyncResult._exception;
}
return(asyncResult);
}
protected override void EndTrack(IAsyncResult result)
{
EtwTrackingAsyncResult.End(result as EtwTrackingAsyncResult);
}