Question

I have some asynchronous operations being performed on the main thread of my application. I need a worker thread to poll the main thread periodically and check a value on the main thread.

How can I do this? Can I raise an event on the worker thread that the main thread is listening to? Bidirectional communication.

Thanks..

Answer 1

Another more “manual” way to accomplish what you’re asking for here. Have the main thread check the value of interest and then send a reset event to the worker thread:

1. Look at ManualResetEvent (and AutoResetEvent, depending on your needs) in the threading libraries. These are very simple down-and-dirty mechanisms for signalling between a worker thread and the main thread.

2. Create a Timer/callback on the main thread that checks the value at a reasonable period. If the desired value is evaluated to true, set the event which sends a signal down to the worker thread.