protected static TAsyncResult End <TAsyncResult>(IAsyncResult result)
where TAsyncResult : AsyncResult
{
if (result == null)
{
throw Fx.Exception.ArgumentNull(nameof(result));
}
var asyncResult = result as TAsyncResult;
if (asyncResult == null)
{
throw Fx.Exception.Argument(nameof(result), CommonResources.InvalidAsyncResult);
}
if (asyncResult._endCalled)
{
throw Fx.Exception.AsError(new InvalidOperationException(CommonResources.AsyncResultAlreadyEnded));
}
asyncResult._endCalled = true;
if (!asyncResult.IsCompleted)
{
lock (asyncResult.ThisLock)
{
if (!asyncResult.IsCompleted && asyncResult._manualResetEvent == null)
{
asyncResult._manualResetEvent = new ManualResetEvent(asyncResult.IsCompleted);
}
}
}
if (asyncResult._manualResetEvent != null)
{
asyncResult._manualResetEvent.WaitOne();
#if NET451
asyncResult._manualResetEvent.Close();
#else
asyncResult._manualResetEvent.Dispose();
#endif
}
if (asyncResult._exception != null)
{
// Trace before PrepareForRethrow to avoid weird callstack strings
#if NET451
Fx.Exception.TraceException(asyncResult._exception, asyncResult.TraceEventType);
#else
Fx.Exception.TraceException(asyncResult._exception, TraceEventType.Verbose);
#endif
ExceptionDispatcher.Throw(asyncResult._exception);
}
return(asyncResult);
}
protected static TAsyncResult End <TAsyncResult>(IAsyncResult result)
where TAsyncResult : AsyncResult
{
if (result == null)
{
throw Fx.Exception.ArgumentNull("result");
}
TAsyncResult asyncResult = result as TAsyncResult;
if (asyncResult == null)
{
throw Fx.Exception.Argument("result", CommonResources.InvalidAsyncResult);
}
if (asyncResult.endCalled)
{
throw Fx.Exception.AsError(new InvalidOperationException(CommonResources.AsyncResultAlreadyEnded));
}
asyncResult.endCalled = true;
if (!asyncResult.isCompleted)
{
lock (asyncResult.ThisLock)
{
if (!asyncResult.isCompleted && asyncResult.manualResetEvent == null)
{
asyncResult.manualResetEvent = new ManualResetEvent(asyncResult.isCompleted);
}
}
}
if (asyncResult.manualResetEvent != null)
{
asyncResult.manualResetEvent.WaitOne();
#if !WINDOWS_UWP && !PCL && !NETSTANDARD1_3 // Close does not exist in UWP
asyncResult.manualResetEvent.Close();
#else
asyncResult.manualResetEvent.Dispose();
#endif
}
if (asyncResult.exception != null)
{
// Trace before PrepareForRethrow to avoid weird callstack strings
#if !PCL && !NETSTANDARD1_3
Fx.Exception.TraceException(asyncResult.exception, asyncResult.TraceEventType, asyncResult.Activity);
#else
Fx.Exception.TraceException(asyncResult.exception, TraceEventType.Verbose, asyncResult.Activity);
#endif
ExceptionDispatcher.Throw(asyncResult.exception);
}
return(asyncResult);
}
public static void EndAsyncResult(IAsyncResult asyncResult)
{
Task task = asyncResult as Task;
if (task == null)
{
throw Fx.Exception.AsError(new ArgumentException(CommonResources.InvalidAsyncResult));
}
try
{
task.Wait();
}
catch (AggregateException ae)
{
ExceptionDispatcher.Throw(ae.GetBaseException());
}
}
public static TResult EndAsyncResult <TResult>(IAsyncResult asyncResult)
{
Task <TResult> task = asyncResult as Task <TResult>;
if (task == null)
{
throw Fx.Exception.AsError(new ArgumentException(CommonResources.InvalidAsyncResult));
}
try
{
return(task.Result);
}
catch (AggregateException ae)
{
ExceptionDispatcher.Throw(ae.GetBaseException());
// Dummy Code
throw ae.GetBaseException();
}
}
