from small one page howto to huge articles all in one place
poll results
Last additions:
May 25th. 2007:
April, 26th. 2006:
| You are here: manpages
PTHREAD_BARRIERATTR_GETPSHARED
Section: POSIX Programmer's Manual (3P)
Updated: 2003
Index
Return to Main Contents
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_getpshared, pthread_barrierattr_setpshared - get
and set the process-shared attribute of the
barrier attributes object (ADVANCED REALTIME THREADS)
SYNOPSIS
#include <pthread.h>
int pthread_barrierattr_getpshared(const pthread_barrierattr_t
*
restrict attr, int *restrict pshared);
int pthread_barrierattr_setpshared(pthread_barrierattr_t *attr,
int pshared);
DESCRIPTION
The pthread_barrierattr_getpshared() function shall obtain the
value of the process-shared attribute from the
attributes object referenced by attr. The pthread_barrierattr_setpshared()
function shall set the
process-shared attribute in an initialized attributes object
referenced by attr.
The process-shared attribute is set to PTHREAD_PROCESS_SHARED
to permit a barrier to be operated upon by any thread that
has access to the memory where the barrier is allocated. If the process-shared
attribute is PTHREAD_PROCESS_PRIVATE, the
barrier shall only be operated upon by threads created within the
same process as the thread that initialized the barrier; if
threads of different processes attempt to operate on such a barrier,
the behavior is undefined. The default value of the attribute
shall be PTHREAD_PROCESS_PRIVATE. Both constants PTHREAD_PROCESS_SHARED
and PTHREAD_PROCESS_PRIVATE are defined in <pthread.h>.
Additional attributes, their default values, and the names of the
associated functions to get and set those attribute values are
implementation-defined.
RETURN VALUE
If successful, the pthread_barrierattr_getpshared() function
shall return zero and store the value of the
process-shared attribute of attr into the object referenced
by the pshared parameter. Otherwise, an error
number shall be returned to indicate the error.
If successful, the pthread_barrierattr_setpshared() function
shall return zero; otherwise, an error number shall be
returned to indicate the error.
ERRORS
These functions may fail if:
- EINVAL
-
The value specified by attr is invalid.
The pthread_barrierattr_setpshared() function may fail if:
- EINVAL
-
The new value specified for the process-shared attribute is
not one of the legal values PTHREAD_PROCESS_SHARED or
PTHREAD_PROCESS_PRIVATE.
These functions shall not return an error code of [EINTR].
The following sections are informative.
EXAMPLES
None.
APPLICATION USAGE
The pthread_barrierattr_getpshared() and pthread_barrierattr_setpshared()
functions are part of the Barriers
option and need not be provided on all implementations.
RATIONALE
None.
FUTURE DIRECTIONS
None.
SEE ALSO
pthread_barrier_destroy(), pthread_barrierattr_destroy(),
pthread_barrierattr_init(), 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
-
Please read "Why adblockers are badwww.cars2fast4u.de
|
Other free services .
.
| 
|
|
- Running on 
-
:
: 
