Threads Management Fnctions

int pthread_create(pthread_t *thread, const pthread_attr_t *attr, void *(*start_routine) (void *), void *arg);

starts a new thread in the calling process

int pthread_join(pthread_t thread, void **retval);

waits for the specified thread to terminate

void pthread_exit(void *retval);

terminates the calling thread and returns a value via retval, which (if the thread is joinable) is available to another thread in the same process that calls pthread_join.