#16723: THR: build FAILED -
conformance/interfaces/pthread_barrierattr_getpshared/2-1.c
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Reporter: cocobean | Owner: nobody
Type: | Status: new
enhancement |
Priority: normal | Milestone: Unscheduled
Component: | Version: R1/Development
System/POSIX | Keywords: POSIX, pthreads,
Resolution: | pthread_barrierattr_getpshared
Blocked By: | Blocking:
Platform: All |
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Description changed by cocobean:
Old description:
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>.
Steps:
{{{
1. Create a piece of shared memory object, create pthread barrier object
'barrier' and set the PTHREAD_PROCESS_SHARED attribute.
2. Parent map the shared memory to its memory space, put 'barrier' into
it;
3. Parent fork to create child process;
4. Child process map the 'barrier' to its memory space;
5. Parent and Child execute same code: loop N times, calling
pthread_barrier_wait()
6. Parent and Child should not block on pthread_barrier_wait()
}}}
Tested on: Haiku hrev54840 x86 with Open POSIX Test Suite 1.5.2
