openmpi/test/asm/atomic_barrier.c

44 lines
1.2 KiB
C

/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2005 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2010 Cisco Systems, Inc. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#define OMPI_BUILDING 0
#include "opal_config.h"
#include "opal/sys/atomic.h"
int
main(int argc, char *argv[])
{
#if OPAL_HAVE_ATOMIC_MEM_BARRIER
/* there really isn't a great way to test that the barriers
actually barrier, but at least make sure they don't kill the
machine.*/
opal_atomic_mb();
opal_atomic_rmb();
opal_atomic_wmb();
return 0;
#else
return 77;
#endif
}