Asynchronous Trigger

AsyncTrigger offers a simple synchronization for producer-consumer scenario:

• There is one or more suspended flows waiting for some event
• There is one or more signaling flows

The trigger offers the following methods for resuming and suspending the callers:

• Signal method allows to resume one or more suspended callers
• WaitAsync suspends the caller until the call of Signal
• SignalAndWaitAsync is an atomic combination of Signal and WaitAsync methods

Signaling method behaves in two ways:

• Resume all suspended callers
• Resume the first waiting caller in the queue

AsyncTrigger differs from AsyncAutoResetEvent synchronization primitive in the following aspects:

• There is no signaled state of the trigger. Therefore, any call to WaitAsync will be suspended and can be resumed only with Signal method
• The trigger can resume all suspended callers
• SignalAndWaitAsync allows to build a queue of signaling flows