private async Task RunWorkerAsync ()
{
//Pull the cancellation token
CancellationToken stopToken = mStopTokenSource
.Token;
//Check for cancellation before we start
// the processing loop
if ( stopToken.IsCancellationRequested )
return;
while ( true )
{
try
{
//Check for cancellation at the beginning
// of processing each loop
stopToken.ThrowIfCancellationRequested();
//Check if buffer can deliver new tasks to us.
// If not (and it's permanent), break worker processing loop.
if ( !await PerformBufferCheckAsync() )
break;
//It may be that the wait handle was signaled
// as part of the Stop operation,
// so we need to check for that as well.
stopToken.ThrowIfCancellationRequested();
//Finally, dequeue and execute the task
// and forward the result to the result queue
IQueuedTaskToken queuedTaskToken = mTaskBuffer.TryGetNextTask();
if ( queuedTaskToken != null )
await ExecuteAndProcessResultAsync( queuedTaskToken, stopToken );
else
mLogger.Debug( "Nothing to execute: no task was retrieved." );
//At the end of the loop, reset the handle
mWaitForClearToFetchTask.Reset();
}
catch ( OperationCanceledException )
{
mLogger.Debug( "Worker stop requested. Breaking processing loop..." );
break;
}
}
}
public void ConsumeBuffer()
{
mConsumeBufferTask = Task.Run(() =>
{
while (!mTaskBuffer.IsCompleted)
{
IQueuedTaskToken queuedTaskToken = mTaskBuffer.TryGetNextTask();
if (queuedTaskToken != null)
{
mConsumedTasks.Add(queuedTaskToken);
}
else
{
Task.Delay(10).Wait();
}
}
});
}