pthread_mutex_unlock(3) - NetBSD Manual Pages

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PTHREAD_MUTEX_UNLOCK(3) NetBSD Library Functions ManualPTHREAD_MUTEX_UNLOCK(3)


NAME

     pthread_mutex_unlock -- unlock a mutex


LIBRARY

     POSIX Threads Library (libpthread, -lpthread)


SYNOPSIS

     #include <pthread.h>

     int
     pthread_mutex_unlock(pthread_mutex_t *mutex);


DESCRIPTION

     If the current thread holds the lock on mutex, then the
     pthread_mutex_unlock() function unlocks mutex.


RETURN VALUES

     If successful, pthread_mutex_unlock() will return zero, otherwise an
     error number will be returned to indicate the error.


ERRORS

     pthread_mutex_unlock() may fail if:

     [EINVAL]           The value specified by mutex is invalid.

     [EPERM]            The current thread does not hold a lock on mutex.


SEE ALSO

     pthread_mutex_destroy(3), pthread_mutex_init(3), pthread_mutex_lock(3),
     pthread_mutex_trylock(3)


STANDARDS

     pthread_mutex_unlock() conforms to ISO/IEC 9945-1:1996 (``POSIX.1'').

NetBSD 5.0.1                   January 30, 2003                   NetBSD 5.0.1