Delegates in Objective C only on specific thread.

Question

I have two threads main thread and worker thread. What I want to be able to do is schedule callbacks (delegates) to the worker thread irrespective of who calls functions that trigger those delegates. For example:

/* mainThread */
[Obj asyncCallback]; // triggers callback to delegate foo()

/* Worker thread should do all the callback processing. i.e when foo() is called [NSThread currentThread] should always give worker threads ID and never main threads ID. */

Answer 1

Probably the easiest option is -performSelector:onThread:waitUntilDone:. You'll need to make sure your worker thread starts a run loop.