Originální popis anglicky:
pthread_barrierattr_destroy, pthread_barrierattr_init - destroy and initialize
the barrier attributes object (
ADVANCED REALTIME THREADS)
Návod, kniha: POSIX Programmer's Manual
#include <pthread.h>
int pthread_barrierattr_destroy(pthread_barrierattr_t *
attr );
int pthread_barrierattr_init(pthread_barrierattr_t *
attr);
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.
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.
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.
None.
The
pthread_barrierattr_destroy() and
pthread_barrierattr_init()
functions are part of the Barriers option and need not be provided on all
implementations.
None.
None.
pthread_barrierattr_getpshared() ,
pthread_barrierattr_setpshared() , the Base Definitions volume of
IEEE Std 1003.1-2001,
<pthread.h>.
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
.
