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 |