How to Implement Semaphores in iOS Application?

Question

Is it possible to implement Counting Semaphore in ios application?

Answer 1

Yes, it is possible. There are quite a few synchronization tools available:

• @synchronized
• NSLock
• NSCondition
• NSConditionLock
• GCD semaphores
• pthread locks
• ...

I'd suggest reading "Threading Programming Guide" and asking something more specific.