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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2017 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2007 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) 2006-2013 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2009 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) 2012 Oak Ridge National Labs. All rights reserved.
* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2015 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "ompi/communicator/communicator.h"
#include "opal/class/opal_object.h"
#include "ompi/request/request.h"
#include "ompi/request/request_default.h"
#include "ompi/constants.h"
opal_pointer_array_t ompi_request_f_to_c_table = {{0}};
ompi_predefined_request_t ompi_request_null = {{{{{0}}}}};
ompi_predefined_request_t *ompi_request_null_addr = &ompi_request_null;
ompi_request_t ompi_request_empty = {{{{0}}}};
ompi_status_public_t ompi_status_empty = {0};
ompi_request_fns_t ompi_request_functions = {
ompi_request_default_test,
ompi_request_default_test_any,
ompi_request_default_test_all,
ompi_request_default_test_some,
ompi_request_default_wait,
ompi_request_default_wait_any,
ompi_request_default_wait_all,
ompi_request_default_wait_some
};
static void ompi_request_construct(ompi_request_t* req)
{
/* don't call _INIT, we don't to set the request to _INACTIVE and there will
* be no matching _FINI invocation */
req->req_state = OMPI_REQUEST_INVALID;
req->req_complete = false;
req->req_persistent = false;
req->req_start = NULL;
req->req_free = NULL;
req->req_cancel = NULL;
req->req_complete_cb = NULL;
req->req_complete_cb_data = NULL;
req->req_f_to_c_index = MPI_UNDEFINED;
req->req_mpi_object.comm = (struct ompi_communicator_t*) NULL;
}
static void ompi_request_destruct(ompi_request_t* req)
{
assert( MPI_UNDEFINED == req->req_f_to_c_index );
assert( OMPI_REQUEST_INVALID == req->req_state );
}
static int ompi_request_null_free(ompi_request_t** request)
{
return OMPI_SUCCESS;
}
static int ompi_request_null_cancel(ompi_request_t* request, int flag)
{
return OMPI_SUCCESS;
}
static int ompi_request_empty_free(ompi_request_t** request)
{
*request = &ompi_request_null.request;
return OMPI_SUCCESS;
}
int ompi_request_persistent_proc_null_free(ompi_request_t** request)
{
OMPI_REQUEST_FINI(*request);
(*request)->req_state = OMPI_REQUEST_INVALID;
OBJ_RELEASE(*request);
*request = &ompi_request_null.request;
return OMPI_SUCCESS;
}
OBJ_CLASS_INSTANCE(
ompi_request_t,
opal_free_list_item_t,
ompi_request_construct,
ompi_request_destruct);
int ompi_request_init(void)
{
OBJ_CONSTRUCT(&ompi_request_null, ompi_request_t);
OBJ_CONSTRUCT(&ompi_request_f_to_c_table, opal_pointer_array_t);
if( OPAL_SUCCESS != opal_pointer_array_init(&ompi_request_f_to_c_table,
0, OMPI_FORTRAN_HANDLE_MAX, 32) ) {
return OMPI_ERROR;
}
ompi_request_null.request.req_type = OMPI_REQUEST_NULL;
ompi_request_null.request.req_status.MPI_SOURCE = MPI_ANY_SOURCE;
ompi_request_null.request.req_status.MPI_TAG = MPI_ANY_TAG;
ompi_request_null.request.req_status.MPI_ERROR = MPI_SUCCESS;
ompi_request_null.request.req_status._ucount = 0;
ompi_request_null.request.req_status._cancelled = 0;
ompi_request_null.request.req_complete = REQUEST_COMPLETED;
ompi_request_null.request.req_state = OMPI_REQUEST_INACTIVE;
ompi_request_null.request.req_persistent = false;
ompi_request_null.request.req_f_to_c_index =
opal_pointer_array_add(&ompi_request_f_to_c_table, &ompi_request_null);
ompi_request_null.request.req_start = NULL; /* should not be called */
ompi_request_null.request.req_free = ompi_request_null_free;
ompi_request_null.request.req_cancel = ompi_request_null_cancel;
ompi_request_null.request.req_mpi_object.comm = &ompi_mpi_comm_world.comm;
if (0 != ompi_request_null.request.req_f_to_c_index) {
return OMPI_ERR_REQUEST;
}
/* We need a way to distinguish between the user provided
* MPI_REQUEST_NULL to MPI_Wait* and a non-active (MPI_PROC_NULL)
* request passed to any P2P non-blocking function.
*
* The main difference to ompi_request_null is
* req_state being OMPI_REQUEST_ACTIVE, so that MPI_Waitall
* does not set the status to ompi_status_empty and the different
* req_free function, which resets the
* request to MPI_REQUEST_NULL.
* The req_cancel function need not be changed.
*/
OBJ_CONSTRUCT(&ompi_request_empty, ompi_request_t);
ompi_request_empty.req_type = OMPI_REQUEST_NULL;
ompi_request_empty.req_status.MPI_SOURCE = MPI_PROC_NULL;
ompi_request_empty.req_status.MPI_TAG = MPI_ANY_TAG;
ompi_request_empty.req_status.MPI_ERROR = MPI_SUCCESS;
ompi_request_empty.req_status._ucount = 0;
ompi_request_empty.req_status._cancelled = 0;
ompi_request_empty.req_complete = REQUEST_COMPLETED;
ompi_request_empty.req_state = OMPI_REQUEST_ACTIVE;
ompi_request_empty.req_persistent = false;
ompi_request_empty.req_f_to_c_index =
opal_pointer_array_add(&ompi_request_f_to_c_table, &ompi_request_empty);
ompi_request_empty.req_start = NULL; /* should not be called */
ompi_request_empty.req_free = ompi_request_empty_free;
ompi_request_empty.req_cancel = ompi_request_null_cancel;
ompi_request_empty.req_mpi_object.comm = &ompi_mpi_comm_world.comm;
if (1 != ompi_request_empty.req_f_to_c_index) {
return OMPI_ERR_REQUEST;
}
ompi_status_empty.MPI_SOURCE = MPI_ANY_SOURCE;
ompi_status_empty.MPI_TAG = MPI_ANY_TAG;
ompi_status_empty.MPI_ERROR = MPI_SUCCESS;
ompi_status_empty._ucount = 0;
ompi_status_empty._cancelled = 0;
return OMPI_SUCCESS;
}
int ompi_request_finalize(void)
{
OMPI_REQUEST_FINI( &ompi_request_null.request );
OBJ_DESTRUCT( &ompi_request_null.request );
OMPI_REQUEST_FINI( &ompi_request_empty );
OBJ_DESTRUCT( &ompi_request_empty );
OBJ_DESTRUCT( &ompi_request_f_to_c_table );
return OMPI_SUCCESS;
}
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