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openmpi/src/class/ompi_free_list.c

83 строки
2.2 KiB
C
Исходник Обычный вид История

/*
* $HEADER$
*/
#include "ompi_config.h"
#include "class/ompi_free_list.h"
static void ompi_free_list_construct(ompi_free_list_t* fl);
static void ompi_free_list_destruct(ompi_free_list_t* fl);
ompi_class_t ompi_free_list_t_class = {
"ompi_free_list_t",
OBJ_CLASS(ompi_list_t),
(ompi_construct_t)ompi_free_list_construct,
(ompi_destruct_t)ompi_free_list_destruct
};
static void ompi_free_list_construct(ompi_free_list_t* fl)
{
OBJ_CONSTRUCT(&fl->fl_lock, ompi_mutex_t);
fl->fl_max_to_alloc = 0;
fl->fl_num_allocated = 0;
fl->fl_num_per_alloc = 0;
fl->fl_elem_size = 0;
fl->fl_elem_class = 0;
fl->fl_mpool = 0;
}
static void ompi_free_list_destruct(ompi_free_list_t* fl)
{
OBJ_DESTRUCT(&fl->fl_lock);
}
int ompi_free_list_init(
ompi_free_list_t *flist,
size_t elem_size,
ompi_class_t* elem_class,
int num_elements_to_alloc,
int max_elements_to_alloc,
int num_elements_per_alloc,
mca_mpool_t* mpool)
{
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;
flist->fl_mpool = mpool;
return ompi_free_list_grow(flist, num_elements_to_alloc);
}
int ompi_free_list_grow(ompi_free_list_t* flist, size_t num_elements)
{
unsigned char* ptr;
size_t i;
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;
if (NULL != flist->fl_mpool)
ptr = (unsigned char*)flist->fl_mpool->mpool_alloc(flist->fl_mpool, num_elements * flist->fl_elem_size);
else
ptr = malloc(num_elements * flist->fl_elem_size);
if(NULL == ptr)
return OMPI_ERR_TEMP_OUT_OF_RESOURCE;
for(i=0; i<num_elements; i++) {
ompi_list_item_t* item = (ompi_list_item_t*)ptr;
if (NULL != flist->fl_elem_class) {
OBJ_CONSTRUCT_INTERNAL(item, flist->fl_elem_class);
}
ompi_list_append(&flist->super, item);
ptr += flist->fl_elem_size;
}
flist->fl_num_allocated += num_elements;
return OMPI_SUCCESS;
}