78 строки
2.2 KiB
C
78 строки
2.2 KiB
C
/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#include "orte_config.h"
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#include "mca/errmgr/errmgr.h"
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#include "dps/dps_internal.h"
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int orte_dps_peek(orte_buffer_t *buffer, orte_data_type_t *type,
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size_t *num_vals)
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{
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int ret;
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orte_buffer_t tmp;
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size_t n=1;
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orte_data_type_t local_type;
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/* check for errors */
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if (buffer == NULL) {
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ORTE_ERROR_LOG(ORTE_ERR_BAD_PARAM);
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return ORTE_ERR_BAD_PARAM;
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}
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/* Double check and ensure that there is data left in the buffer. */
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if (buffer->unpack_ptr >= buffer->base_ptr + buffer->bytes_used) {
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*type = ORTE_NULL;
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*num_vals = 0;
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return ORTE_UNPACK_READ_PAST_END_OF_BUFFER;
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}
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/* cheat: unpack from a copy of the buffer -- leaving all the
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original pointers intact */
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tmp = *buffer;
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if (ORTE_SUCCESS != (
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ret = orte_dps_get_data_type(&tmp, &local_type))) {
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*type = ORTE_NULL;
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*num_vals = 0;
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return ret;
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}
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if (ORTE_SIZE != local_type) { /* if the length wasn't first, then error */
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ORTE_ERROR_LOG(ORTE_ERR_UNPACK_FAILURE);
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*type = ORTE_NULL;
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*num_vals = 0;
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return ORTE_ERR_UNPACK_FAILURE;
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}
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if (ORTE_SUCCESS != (ret = orte_dps_unpack_sizet(&tmp, num_vals, &n, ORTE_SIZE))) {
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ORTE_ERROR_LOG(ret);
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*type = ORTE_NULL;
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*num_vals = 0;
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return ret;
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}
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if (ORTE_SUCCESS != (ret = orte_dps_get_data_type(&tmp, type))) {
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ORTE_ERROR_LOG(ret);
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*type = ORTE_NULL;
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*num_vals = 0;
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}
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return ret;
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}
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