c8bb7537e7
#define CACHE_LINE_SIZE to 128. This name has a conflict on NetBSD, and it seems kinda odd to have a header file that ''only'' defines a single value. Also, we'll soon be raising hwloc to be a first-class item, so having this file around seemed kinda weird. Therefore, I replaced CACHE_LINE_SIZE with opal_cache_line_size, an int (in opal/runtime/opal_init.c and opal/runtime/opal.h) on the rationale that we can fill this in at runtime with hwloc info (trunk and v1.5/beyond, only). The only place we ''needed'' a compile-time CACHE_LINE_SIZE was in the BTL SM (for struct padding), so I made a new BTL_SM_ preprocessor macro with the old CACHE_LINE_SIZE value (128). That use isn't suitable for run-time hwloc information, anyway. This commit was SVN r23349.
130 строки
4.2 KiB
C
130 строки
4.2 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) 2004-2008 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 (c) 2010 Cisco Systems, Inc. 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 "opal_config.h"
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#include "opal/class/opal_free_list.h"
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#include "opal/runtime/opal.h"
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static void opal_free_list_construct(opal_free_list_t* fl);
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static void opal_free_list_destruct(opal_free_list_t* fl);
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OBJ_CLASS_INSTANCE(opal_free_list_t,
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opal_list_t,
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opal_free_list_construct,
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opal_free_list_destruct);
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OBJ_CLASS_INSTANCE(opal_free_list_item_t,
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opal_list_item_t,
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NULL, NULL);
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static void opal_free_list_construct(opal_free_list_t* fl)
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{
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OBJ_CONSTRUCT(&fl->fl_lock, opal_mutex_t);
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OBJ_CONSTRUCT(&fl->fl_condition, opal_condition_t);
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fl->fl_max_to_alloc = 0;
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fl->fl_num_allocated = 0;
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fl->fl_num_per_alloc = 0;
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fl->fl_num_waiting = 0;
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fl->fl_elem_size = 0;
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fl->fl_elem_class = 0;
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OBJ_CONSTRUCT(&(fl->fl_allocations), opal_list_t);
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}
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static void opal_free_list_destruct(opal_free_list_t* fl)
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{
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opal_list_item_t *item;
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while (NULL != (item = opal_list_remove_first(&(fl->fl_allocations)))) {
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/* destruct the item (we constructed it), then free the memory chunk */
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OBJ_DESTRUCT(item);
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free(item);
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}
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OBJ_DESTRUCT(&fl->fl_allocations);
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OBJ_DESTRUCT(&fl->fl_condition);
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OBJ_DESTRUCT(&fl->fl_lock);
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}
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int opal_free_list_init(
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opal_free_list_t *flist,
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size_t elem_size,
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opal_class_t* elem_class,
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int num_elements_to_alloc,
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int max_elements_to_alloc,
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int num_elements_per_alloc)
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{
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flist->fl_elem_size = elem_size;
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flist->fl_elem_class = elem_class;
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flist->fl_max_to_alloc = max_elements_to_alloc;
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flist->fl_num_allocated = 0;
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flist->fl_num_per_alloc = num_elements_per_alloc;
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if(num_elements_to_alloc)
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return opal_free_list_grow(flist, num_elements_to_alloc);
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return OPAL_SUCCESS;
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}
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int opal_free_list_grow(opal_free_list_t* flist, size_t num_elements)
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{
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unsigned char* ptr;
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unsigned char* alloc_ptr;
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size_t i;
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size_t mod;
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if (flist->fl_max_to_alloc > 0 && flist->fl_num_allocated + num_elements > flist->fl_max_to_alloc)
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return OPAL_ERR_TEMP_OUT_OF_RESOURCE;
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alloc_ptr = (unsigned char *)malloc((num_elements * flist->fl_elem_size) +
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sizeof(opal_list_item_t) +
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opal_cache_line_size);
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if(NULL == alloc_ptr)
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return OPAL_ERR_TEMP_OUT_OF_RESOURCE;
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/* make the alloc_ptr a list item, save the chunk in the allocations list, and
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have ptr point to memory right after the list item structure */
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OBJ_CONSTRUCT(alloc_ptr, opal_list_item_t);
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opal_list_append(&(flist->fl_allocations), (opal_list_item_t*) alloc_ptr);
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ptr = alloc_ptr + sizeof(opal_list_item_t);
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mod = (uintptr_t)ptr % opal_cache_line_size;
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if(mod != 0) {
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ptr += (opal_cache_line_size - mod);
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}
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if (NULL != flist->fl_elem_class) {
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for(i=0; i<num_elements; i++) {
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opal_free_list_item_t* item = (opal_free_list_item_t*)ptr;
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OBJ_CONSTRUCT_INTERNAL(item, flist->fl_elem_class);
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opal_list_append(&(flist->super), &(item->super));
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ptr += flist->fl_elem_size;
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}
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} else {
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for(i=0; i<num_elements; i++) {
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opal_free_list_item_t* item = (opal_free_list_item_t*)ptr;
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opal_list_append(&(flist->super), &(item->super));
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ptr += flist->fl_elem_size;
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}
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}
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flist->fl_num_allocated += num_elements;
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return OPAL_SUCCESS;
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}
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