pthread_mutex_init(3) - NetBSD Manual Pages

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PTHREAD_MUTEX_INIT(3)   NetBSD Library Functions Manual  PTHREAD_MUTEX_INIT(3)


NAME

     pthread_mutex_init -- create a mutex


LIBRARY

     POSIX Threads Library (libpthread, -lpthread)


SYNOPSIS

     #include <pthread.h>

     int
     pthread_mutex_init(pthread_mutex_t * restrict mutex,
         const pthread_mutexattr_t * restrict 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

     pthread_mutex_init() shall fail if:

     [EAGAIN]           The system lacks the resources to initialize another
                        mutex.

     [ENOMEM]           The process cannot allocate enough memory to initial-
                        ize another mutex.

     pthread_mutex_init() may fail if:

     [EINVAL]           The value specified by attr is invalid.


SEE ALSO

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


STANDARDS

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

NetBSD 5.2.2                   January 30, 2003                   NetBSD 5.2.2