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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) 2004-2006 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2020 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) 2009 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) 2010-2017 IBM Corporation. All rights reserved.
* Copyright (c) 2015 Los Alamos National Security, LLC. All rights
* reserved.
* Copyright (c) 2017 Research Organization for Information Science
* and Technology (RIST). All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "opal_config.h"
#include "base.h"
#include "mpool_base_tree.h"
#include "opal/align.h"
#include "opal/mca/mpool/mpool.h"
#include "opal/mca/threads/mutex.h"
#include "opal/util/info.h"
#include <stdint.h>
#include <string.h>
static void unregister_tree_item(mca_mpool_base_tree_item_t *mpool_tree_item)
{
mca_mpool_base_module_t *mpool;
mpool = mpool_tree_item->mpool;
mpool->mpool_free(mpool, mpool_tree_item->key);
}
/**
* Function to allocate special memory according to what the user requests in
* the info object.
*
* If the info parameter is MPI_INFO_NULL, then this function will try to allocate
* the memory with the optionally named mpool or malloc and try to register the
* pointer with as many registration caches as possible. Registration caches that
* fail to register the region will be ignored. The mpool name can optionally be
* specified in the info object.
*
* @param size the size of the memory area to allocate
* @param info an info object which tells us what kind of memory to allocate
*
* @retval pointer to the allocated memory
* @retval NULL on failure
*/
void *mca_mpool_base_alloc(size_t size, opal_info_t *info, const char *hints)
{
mca_mpool_base_tree_item_t *mpool_tree_item = NULL;
mca_mpool_base_module_t *mpool;
void *mem = NULL;
opal_cstring_t *align_info_str;
long long memory_alignment = OPAL_ALIGN_MIN;
mpool_tree_item = mca_mpool_base_tree_item_get();
if (!mpool_tree_item) {
return NULL;
}
if (NULL != info) {
int flag;
opal_info_get(info, "mpi_minimum_memory_alignment",
&align_info_str, &flag);
if (flag) {
long long tmp_align = atoll(align_info_str->string);
OBJ_RELEASE(align_info_str);
if (tmp_align > memory_alignment) {
memory_alignment = tmp_align;
}
}
}
mpool_tree_item->num_bytes = size;
mpool_tree_item->count = 0;
mpool = mca_mpool_base_module_lookup(hints);
if (NULL != mpool) {
mem = mpool->mpool_alloc (mpool, size, memory_alignment, 0);
}
if (NULL == mem) {
/* fall back to default mpool */
mem = mca_mpool_base_default_module->mpool_alloc(mca_mpool_base_default_module,
size, memory_alignment, 0);
mca_mpool_base_tree_item_put(mpool_tree_item);
} else {
mpool_tree_item->mpool = mpool;
mpool_tree_item->key = mem;
mca_mpool_base_tree_insert(mpool_tree_item);
}
return mem;
}
/**
* Function to free memory previously allocated by mca_mpool_base_alloc
*
* @param base pointer to the memory to free
*
* @retval OPAL_SUCCESS
* @retval OPAL_ERR_BAD_PARAM if the passed base pointer was invalid
*/
int mca_mpool_base_free(void *base)
{
mca_mpool_base_tree_item_t *mpool_tree_item = NULL;
int rc;
if (!base) {
return OPAL_ERROR;
}
mpool_tree_item = mca_mpool_base_tree_find(base);
if (!mpool_tree_item) {
/* nothing in the tree this was just plain old malloc'd memory */
mca_mpool_base_default_module->mpool_free(mca_mpool_base_default_module, base);
return OPAL_SUCCESS;
}
rc = mca_mpool_base_tree_delete(mpool_tree_item);
if (OPAL_SUCCESS == rc) {
unregister_tree_item(mpool_tree_item);
mca_mpool_base_tree_item_put(mpool_tree_item);
}
return rc;
}
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