NAME

       pthread_barrierattr_destroy, pthread_barrierattr_init - destroy and initialize the barrier
       attributes object (ADVANCED REALTIME THREADS)

SYNOPSIS

       #include <pthread.h>

       int pthread_barrierattr_destroy(pthread_barrierattr_t *attr);
       int pthread_barrierattr_init(pthread_barrierattr_t *attr);

DESCRIPTION

       The pthread_barrierattr_destroy() function shall destroy a barrier  attributes  object.  A
       destroyed  attr  attributes  object can be reinitialized using pthread_barrierattr_init();
       the results of otherwise referencing the object after it has been destroyed are undefined.
       An  implementation may cause pthread_barrierattr_destroy() to set the object referenced by
       attr to an invalid value.

       The pthread_barrierattr_init() function shall initialize a barrier attributes object  attr
       with the default value for all of the attributes defined by the implementation.

       Results  are  undefined  if  pthread_barrierattr_init()  is  called  specifying an already
       initialized attr attributes object.

       After a barrier attributes object has been used to initialize one or  more  barriers,  any
       function  affecting  the  attributes  object  (including destruction) shall not affect any
       previously initialized barrier.

RETURN VALUE

       If successful, the pthread_barrierattr_destroy() and pthread_barrierattr_init()  functions
       shall return zero; otherwise, an error number shall be returned to indicate the error.

ERRORS

       The pthread_barrierattr_destroy() function may fail if:

       EINVAL The value specified by attr is invalid.

       The pthread_barrierattr_init() function shall fail if:

       ENOMEM Insufficient memory exists to initialize the barrier attributes object.

       These functions shall not return an error code of [EINTR].

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       The pthread_barrierattr_destroy() and pthread_barrierattr_init() functions are part of the
       Barriers option and need not be provided on all implementations.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       pthread_barrierattr_getpshared() , pthread_barrierattr_setpshared() , the Base Definitions
       volume of IEEE Std 1003.1-2001, <pthread.h>.

COPYRIGHT

       Portions  of  this  text  are  reprinted  and  reproduced in electronic form from IEEE Std
       1003.1, 2003 Edition, Standard for Information Technology  --  Portable  Operating  System
       Interface  (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2003 by
       the Institute of Electrical and Electronics Engineers, Inc and  The  Open  Group.  In  the
       event  of  any  discrepancy  between this version and the original IEEE and The Open Group
       Standard, the original IEEE and The Open Group  Standard  is  the  referee  document.  The
       original Standard can be obtained online at http://www.opengroup.org/unix/online.html .