pthread_barrierattr_destroy man page on Oracle

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PTHREAD_BARRIERATTR_DESTROYPOSIX Programmer's MPTHREAD_BARRIERATTR_DESTROY(3P)

PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the	 corresponding
       Linux  manual page for details of Linux behavior), or the interface may
       not be implemented on Linux.

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 reinitial‐
       ized  using pthread_barrierattr_init(); the results of otherwise refer‐
       encing the object after it has been destroyed are undefined. An	imple‐
       mentation  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  specify‐
       ing 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_barrier‐
       attr_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()	 func‐
       tions  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 .

IEEE/The Open Group		     2003      PTHREAD_BARRIERATTR_DESTROY(3P)
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