How to synchronize manager/worker pthreads without a join?

Question

I\'m familiar with multithreading and I\'ve developed many multithreaded programs in Java and Objective-C successfully. But I couldn\'t achieve the following in C using pthreads

Answer 1

There are several synchronization mechanisms you can use (condition variables, for example). I think the simplest would be to use a pthread_barrier to synchronize the the start of the threads.

Assuming that you want all of the threads to 'sync up' on each loop iteration, you can just reuse the barrier. If you need something more flexible, a condition variable might be more appropriate.

When you decide it's time for the thread to wrap up (you haven't indicated how the threads will know to break out of the infinite loop - a simple shared variable might be used for that; the shared variable could be an atomic type or protected with a mutex), the main() thread should use pthread_join() to wait for all the threads to complete.