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PTHREAD_MUTEX_LOCK(3)  FreeBSD Library Functions Manual	 PTHREAD_MUTEX_LOCK(3)

NAME
     pthread_mutex_lock	-- lock	a mutex

LIBRARY
     Reentrant C Library (libc_r, -lc_r)
     POSIX Threads Library (libpthread,	-lpthread)
     1:1 Threading Library (libthr, -lthr)

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'').

FreeBSD	9.2			 July 30, 1998			   FreeBSD 9.2

NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | ERRORS | SEE ALSO | STANDARDS

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