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PTHREAD_BARRIERATTR_DESTROY
Section: POSIX Programmer's Manual (3P)
Updated: 2003
Index
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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 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 .
Index
- PROLOG
-
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ERRORS
-
- EXAMPLES
-
- APPLICATION USAGE
-
- RATIONALE
-
- FUTURE DIRECTIONS
-
- SEE ALSO
-
- COPYRIGHT
-
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