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openmpi/ompi/mpi/tool/init_thread.c
2013-07-16 16:03:33 +00:00

77 строки
1.7 KiB
C

/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2012-2013 Los Alamos National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi/mpi/tool/mpit-internal.h"
#include "ompi/runtime/ompi_info_support.h"
#include "opal/include/opal/sys/atomic.h"
#include "opal/runtime/opal.h"
#if OPAL_HAVE_WEAK_SYMBOLS && OMPI_PROFILING_DEFINES
#pragma weak MPI_T_init_thread = PMPI_T_init_thread
#endif
#if OMPI_PROFILING_DEFINES
#include "ompi/mpi/tool/profile/defines.h"
#endif
extern opal_mutex_t mpit_big_lock;
extern volatile uint32_t mpit_init_count;
extern volatile int32_t initted;
static const char FUNC_NAME[] = "MPI_T_init_thread";
int MPI_T_init_thread (int required, int *provided)
{
static volatile int32_t first_init = 1;
int rc = MPI_SUCCESS;
if (opal_atomic_cmpset (&first_init, 1, 0) == 1) {
OBJ_CONSTRUCT(&mpit_big_lock, opal_mutex_t);
initted = 1;
}
while (!initted) {
usleep (10);
}
mpit_lock ();
do {
if (0 != mpit_init_count++) {
break;
}
/* call opal_init_util to intialize the MCA system */
rc = opal_init_util (NULL, NULL);
if (OPAL_SUCCESS != rc) {
rc = MPI_ERR_OTHER;
break;
}
/* register all parameters */
rc = ompi_info_register_framework_params (NULL);
if (OMPI_SUCCESS != rc) {
rc = MPI_ERR_OTHER;
break;
}
/* determine the thread level. TODO -- this might
be wrong */
ompi_mpi_thread_level (required, provided);
} while (0);
mpit_unlock ();
return rc;
}