pthread_unlock_global_np(3-thr) — Reliant UNIX 5.44c4

pthread_unlock_global_np(3-thr)             pthread_unlock_global_np(3-thr)

NAME
     pthreadunlockglobalnp - unlocks a global mutex

SYNOPSIS
     #include <pthread.h>

     void pthreadunlockglobalnp();

DESCRIPTION
     The pthreadunlockglobalnp() routine unlocks the global mutex when
     each call to pthreadlockglobalnp() is matched by a call to this
     routine. For example, if you called pthreadlockglobalnp() three
     times, pthreadunlockglobalnp() 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 pthreadlockglobalnp(). The scheduling policy is used to
     determine which thread acquires the global mutex. For the policies
     SCHEDFIFO and SCHEDRR, a blocked thread is chosen in priority order.

     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.

     This routine is a new primitive.

RETURN VALUES
     No value is returned.

SEE ALSO
     pthreadlockglobalnp(3-thr), pthreadmutexlock(3-thr),
     pthreadmutexunlock(3-thr), pthreadmutexattrsetkindnp(3-thr).






















Page 1                       Reliant UNIX 5.44                Printed 11/98
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