Setting priorities for pthreads with mutex

Question

I was curious how you go about setting priorities for pthreads using a mutex in C. I want to be sure my threads receive the lock in the order they should based off some priority value. I've done a little digging and found

pthread_mutexattr_getprotocol()

and

pthread_mutexattr_setprotocol()

Is this something that accomplishes what I want to do? Thanks.

Answer 1

I do not see where mutexes fit into this - thread priority

 pthread_setschedparam(pthread_t thread, int policy,
                         const struct sched_param *param);
   pthread_getschedparam(pthread_t thread, int *policy,
                         struct sched_param *param);

Try those. Assuming I understand what you want...

Try pthread_barrier_wait to force threads to wait for everybody else to complete something.