108 строки
2.7 KiB
C
108 строки
2.7 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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/*
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* DPS Buffer Operations
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*/
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/** @file:
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*
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*/
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#include "orte_config.h"
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#include <sys/types.h>
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#include "orte/mca/ns/base/base.h"
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#include "orte/dss/dss_internal.h"
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int orte_dss_unload(orte_buffer_t *buffer, void **payload,
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size_t *bytes_used)
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{
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/* check that buffer is not null */
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if (!buffer) {
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return ORTE_ERR_BAD_PARAM;
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}
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/* were we given someplace to point to the payload */
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if (NULL == payload) {
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return ORTE_ERR_BAD_PARAM;
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}
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/* anything in the buffer - if not, nothing to do */
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if (NULL == buffer->base_ptr || 0 == buffer->bytes_used) {
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*payload = NULL;
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*bytes_used = 0;
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return ORTE_SUCCESS;
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}
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/* okay, we have something to provide - pass it back */
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*payload = buffer->base_ptr;
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*bytes_used = buffer->bytes_used;
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/* dereference everything in buffer */
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buffer->base_ptr = NULL;
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buffer->pack_ptr = buffer->unpack_ptr = NULL;
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buffer->bytes_allocated = buffer->bytes_used = buffer->bytes_avail = 0;
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/* All done */
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return ORTE_SUCCESS;
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}
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int orte_dss_load(orte_buffer_t *buffer, void *payload,
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size_t bytes_used)
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{
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/* check to see if the buffer has been initialized */
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if (NULL == buffer) {
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return ORTE_ERR_BAD_PARAM;
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}
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/* check that the payload is there */
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if (NULL == payload) {
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return ORTE_SUCCESS;
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}
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/* check if buffer already has payload - free it if so */
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if (NULL != buffer->base_ptr) {
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free(buffer->base_ptr);
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}
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/* populate the buffer */
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buffer->base_ptr = payload;
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/* set pack/unpack pointers */
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buffer->pack_ptr = ((char*)buffer->base_ptr) + bytes_used;
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buffer->unpack_ptr = buffer->base_ptr;
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/* set counts for size and space */
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buffer->bytes_allocated = buffer->bytes_used = bytes_used;
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buffer->bytes_avail = 0;
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/* All done */
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return ORTE_SUCCESS;
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}
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