Is there any way I can abstract away what thread a particular delegate may execute on, such that I could execute it on the calling thread initially, but move execution to a background thread if it ends up taking longer than a certain amount of time?
Assume the delegate is written to be asynchronous. I'm not trying to take synchronous blocks and move them to background threads to increase parallelism, but rather I'm looking to increase performance of asynchronous execution by avoiding the overhead of threads for simple operations.
Basically I'm wondering if there's any way the execution of a delegate or lambda can be paused, moved to another thread and resumed, if I could establish clear stack boundaries, etc.
I doubt this is possible, I'm just curious.