static void free_object(struct kmem_cache *cache, void *object)
{
struct slab_page *slab = VIRT_TO_PAGE(object);
if (slab->cache != cache)
panic("[slab] - Fatal error, free object in wrong cache.");
slab->free[slab->avail++] = object;
if (slab->avail == 1 && slab->avail < slab->limit)
{
/* Move from full slab list into partial slab list. */
slab_list_remove(slab);
slab_list_insert(&cache->partial_slab, slab);
}
else if (slab->avail == slab->limit)
{
/* Move from partial slab list into free slab list. */
slab_list_remove(slab);
slab_list_insert(&cache->free_slab, slab);
}
}
void slab_destroy(slab_t** slab)
{
/* Disconnect from the list */
slab_list_remove(*slab);
/* Free slab */
slab_depot_free(*slab);
/* Invalidate pointer. */
dbg_mem("%s: deleted slab %p\n", __func__, *slab);
*slab = 0;
}
static inline void * alloc_object_from_slab(struct slab_page *slab)
{
void *object = NULL;
if (slab->avail == 0)
panic("[slab] - Fatal error, alloc object from full slab.");
object = slab->free[--slab->avail];
if (slab->avail == 0)
{
/* Move from partial slab list into full slab list. */
slab_list_remove(slab);
slab_list_insert(&slab->cache->full_slab, slab);
}
else if (slab->avail + 1 == slab->limit)
{
/* Move from free slab list into partial slab list. */
slab_list_remove(slab);
slab_list_insert(&slab->cache->partial_slab, slab);
}
return object;
}
static inline void slab_list_destroy(struct slab_page *head)
{
struct slab_page *slab = slab_list_first(head);
while (slab != head)
{
/* Remove from list */
struct slab_page *temp = slab;
slab = slab->next;
slab_list_remove(temp);
/* Free physical memory page */
pmm_free_page_address(CAST_VIRTUAL_TO_PHYSICAL(temp));
}
}
/*! \brief Move slab from one linked list to another. */
static inline void slab_list_move(slab_t** target, slab_t* slab)
{
slab_list_remove(slab);
slab_list_insert(target, slab);
}
