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openmpi/opal/class/opal_free_list.c
Brian Barrett a9863e5ff5 * properly construct / destruct the condition variable in the free list
structures

This commit was SVN r7153.
2005-09-02 16:00:42 +00:00

105 строки
2.9 KiB
C

/*
* Copyright (c) 2004-2005 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
* All rights reserved.
* Copyright (c) 2004-2005 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.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#include "ompi_config.h"
#include "opal/class/opal_free_list.h"
#include "opal/include/sys/cache.h"
static void opal_free_list_construct(opal_free_list_t* fl);
static void opal_free_list_destruct(opal_free_list_t* fl);
opal_class_t opal_free_list_t_class = {
"opal_free_list_t",
OBJ_CLASS(opal_list_t),
(opal_construct_t)opal_free_list_construct,
(opal_destruct_t)opal_free_list_destruct
};
static void opal_free_list_construct(opal_free_list_t* fl)
{
OBJ_CONSTRUCT(&fl->fl_lock, opal_mutex_t);
OBJ_CONSTRUCT(&fl->fl_condition, opal_condition_t);
fl->fl_max_to_alloc = 0;
fl->fl_num_allocated = 0;
fl->fl_num_per_alloc = 0;
fl->fl_num_waiting = 0;
fl->fl_elem_size = 0;
fl->fl_elem_class = 0;
}
static void opal_free_list_destruct(opal_free_list_t* fl)
{
OBJ_DESTRUCT(&fl->fl_condition);
OBJ_DESTRUCT(&fl->fl_lock);
}
int opal_free_list_init(
opal_free_list_t *flist,
size_t elem_size,
opal_class_t* elem_class,
int num_elements_to_alloc,
int max_elements_to_alloc,
int num_elements_per_alloc)
{
flist->fl_elem_size = elem_size;
flist->fl_elem_class = elem_class;
flist->fl_max_to_alloc = max_elements_to_alloc;
flist->fl_num_allocated = 0;
flist->fl_num_per_alloc = num_elements_per_alloc;
if(num_elements_to_alloc)
return opal_free_list_grow(flist, num_elements_to_alloc);
return OMPI_SUCCESS;
}
int opal_free_list_grow(opal_free_list_t* flist, size_t num_elements)
{
unsigned char* ptr;
size_t i;
size_t mod;
if (flist->fl_max_to_alloc > 0 && flist->fl_num_allocated + num_elements > flist->fl_max_to_alloc)
return OMPI_ERR_TEMP_OUT_OF_RESOURCE;
ptr = (unsigned char *)malloc((num_elements * flist->fl_elem_size) + CACHE_LINE_SIZE);
if(NULL == ptr)
return OMPI_ERR_TEMP_OUT_OF_RESOURCE;
mod = (unsigned long)ptr % CACHE_LINE_SIZE;
if(mod != 0) {
ptr += (CACHE_LINE_SIZE - mod);
}
for(i=0; i<num_elements; i++) {
opal_free_list_item_t* item = (opal_free_list_item_t*)ptr;
item->user_data = NULL;
if (NULL != flist->fl_elem_class) {
OBJ_CONSTRUCT_INTERNAL(item, flist->fl_elem_class);
}
opal_list_append(&(flist->super), &(item->super));
ptr += flist->fl_elem_size;
}
flist->fl_num_allocated += num_elements;
return OMPI_SUCCESS;
}