Managing CPU intensive threads on iOS

Question

I’m an experienced C/C++ programmer coming up to speed on Objective C on the iPhone. I have done a lot of searching, but haven’t found a satisfactory answer on what must be

Answer 1

Here you are my answers to your questions.

1) Since you are an experienced C programmer, you will feel comfortable with Grand Central Dispatch (GCD), a C based API for concurrency.

2) With GCD, you do not need to sleep at all. Simply dispatch asynchronously the work you need to do in a queue using the maximum priority (DISPATCH_QUEUE_PRIORITY_HIGH).

3) When you need to update the UI, simply dispatch on the main queue ( within the same block doing the work, using dispatch_get_main_queue() ) the UI update as needed.

Take a look at the relevant GCD documentation here.