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pthread_mutex_lock(3)    BSD Library Functions Manual    pthread_mutex_lock(3)


NAME

     pthread_mutex_lock -- lock a mutex


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_init(3),
     pthread_mutex_trylock(3), pthread_mutex_unlock(3)


STANDARDS

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

BSD                            January 31, 2006                            BSD

Mac OS X 10.12.3 - Generated Sun Feb 5 16:19:16 CST 2017
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