pthread_barrierattr_setpshared()

Set the value of a barrier's process-shared attribute

Synopsis:

#include <sync.h>

int pthread_barrierattr_setpshared( 
                        pthread_barrierattr_t * attr
                        int pshared );

Arguments:

attr
A pointer to the pthread_barrierattr_t object whose attribute you want to set. You must have initialized this object by calling pthread_barrierattr_init() before calling pthread_barrierattr_setpshared().
pshared
The new value of the process-shared attribute; one of:
  • PTHREAD_PROCESS_SHARED — allow a barrier to be operated upon by any thread that has access to the memory where the barrier is allocated.
  • PTHREAD_PROCESS_PRIVATE (default behavior) — allow a barrier to be operated on only 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 as if PTHREAD_PROCESS_SHARED were set.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The pthread_barrierattr_setpshared() function sets the process-shared attribute in an initialized attributes object referenced by attr.

Returns:

EOK
Success.
EINVAL
The attribute object, attr, or the new value specified in pshared isn't valid.

Classification:

POSIX 1003.1 THR BAR TSH

Safety:  
Cancellation point No
Interrupt handler No
Signal handler Yes
Thread Yes

Last modified: 2013-12-23

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