uint8_t *ptr = (uint8_t *)&elem[1];
struct malloc_elem *next = RTE_PTR_ADD(elem, elem->size);
if (next->state == ELEM_FREE){
/* remove from free list, join to this one */
elem_free_list_remove(next);
join_elem(elem, next);
uint8_t *ptr = (uint8_t *)&elem[1];
struct malloc_elem *next = RTE_PTR_ADD(elem, elem->size);
if (next->state == ELEM_FREE){
/* remove from free list, join to this one */
elem_free_list_remove(next);
join_elem(elem, next);
if (elem->prev != NULL && elem->prev->state == ELEM_FREE) {
elem_free_list_remove(elem->prev);
join_elem(elem->prev, elem);
if (elem->prev != NULL && elem->prev->state == ELEM_FREE) {
elem_free_list_remove(elem->prev);
join_elem(elem->prev, elem);