pthread_unlock_global_np(3thr)pthread_unlock_global_np(3thr)Namepthread_unlock_global_np - Unlocks a global mutex
Syntax
#include <pthread.h>
void pthread_unlock_global_np();
Arguments
None
Description
This routine unlocks the global mutex when each call to
pthread_lock_global_np has been matched by a call to this routine. For
example, if you called pthread_lock_global_np three times,
pthread_unlock_global_np unlocks the global mutex when you call it the
third time. If no threads are waiting for the global mutex, it becomes
unlocked with no current owner. If one or more threads are waiting to
lock the global mutex, one thread returns from its call to
pthread_lock_global_np. The scheduling policy is used to determine
which thread acquires the global mutex. For the policies SCHED_FIFO and
SCHED_RR, a blocked thread is chosen in priority order, using FIFO
within priorities.
The results of calling this routine are unpredictable if the global
mutex is already unlocked. The results of calling this routine are also
unpredictable if the global mutex is owned by a thread other than the
calling thread.
Return Values
None
pthread_unlock_global_np(3thr)
