macOS parallel code

[farmerdoug]

Definitely looks above my present abilities. Many have a new student who can take it on but my offer to Lloyd extends to you.
Thanks

 

[jared_kipe]

For implementing a for loop style there is a more specific function:

dispatch_apply(size_t iterations, dispatch_queue_t queue, void (^block)(size_t));

This does 'iterations' dispatches and passes 0-(iterations - 1) as a variable to the block or function to keep track of which iteration it is on.

GCD will automatically optimize thread creation based on system resources.