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PTHREAD_MUTEX_LOCK(3) DragonFly Library Functions Manual PTHREAD_MUTEX_LOCK(3)

NAME
     pthread_mutex_lock -- lock a mutex

LIBRARY
     POSIX Threads Library (libpthread, -lpthread)

SYNOPSIS
     #include <pthread.h>

     int
     pthread_mutex_lock(pthread_mutex_t *mutex);

DESCRIPTION
     The pthread_mutex_lock() function locks mutex.  If the mutex is already
     locked, the calling thread will block until the mutex becomes available.

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

ERRORS
     The pthread_mutex_lock() function will fail if:

     [EINVAL]           The value specified by mutex is invalid.

     [EDEADLK]          A deadlock would occur if the thread blocked waiting
                        for mutex.

SEE ALSO
     pthread_mutex_destroy(3), pthread_mutex_getprioceiling(3),
     pthread_mutex_init(3), pthread_mutex_setprioceiling(3),
     pthread_mutex_timedlock(3), pthread_mutex_trylock(3),
     pthread_mutex_unlock(3)

STANDARDS
     The pthread_mutex_lock() function conforms to ISO/IEC 9945-1:1996
     (``POSIX.1'').

DragonFly 4.9                    July 10, 2009                   DragonFly 4.9