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pthread_mutex_init(3)

NAME

     pthread_mutex_init -- create 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_init(pthread_mutex_t *mutex,
	 const pthread_mutexattr_t *attr);

DESCRIPTION

     The pthread_mutex_init() function creates a new mutex, with attributes
     specified with attr.  If attr is NULL the default attributes are used.

RETURN VALUES

     If successful, pthread_mutex_init() will return zero and put the new
     mutex id into mutex, otherwise an error number will be returned to indi-
     cate the error.

ERRORS

     The pthread_mutex_init() function will fail if:

     [EINVAL]		The value specified by attr is invalid.

     [ENOMEM]		The process cannot allocate enough memory to create
			another mutex.

SEE ALSO

     pthread_mutex_destroy(3), pthread_mutex_lock(3),
     pthread_mutex_trylock(3), pthread_mutex_unlock(3)

STANDARDS

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

FreeBSD 5.4			 July 29, 1998			   FreeBSD 5.4

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