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static inline void cache_init(display_cache *cache, const char *name)
{
int i;
cache->name = name;
ring_init(&cache->lru);
for (i = 0; i < SPICE_N_ELEMENTS(cache->hash); i++) {
ring_init(&cache->hash[i]);
}
}
static inline Ring *cache_head(display_cache *cache, uint64_t id)
{
return &cache->hash[id % SPICE_N_ELEMENTS(cache->hash)];
}
static inline void cache_used(display_cache *cache, display_cache_item *item)
{
ring_remove(&item->lru_link);
ring_add(&cache->lru, &item->lru_link);
}
static inline display_cache_item *cache_get_lru(display_cache *cache)
{
display_cache_item *item;
RingItem *ring;
ring = ring_get_tail(&cache->lru);
item = SPICE_CONTAINEROF(ring, display_cache_item, lru_link);
return item;
}
static inline display_cache_item *cache_find(display_cache *cache, uint64_t id)
{
display_cache_item *item;
RingItem *ring;
Ring *head;
head = cache_head(cache, id);
for (ring = head; ring != NULL; ring = ring_next(head, ring)) {
item = SPICE_CONTAINEROF(ring, display_cache_item, hash_link);
if (item->id == id) {
return item;
}
}
fprintf(stderr, "%s: %s %" PRIx64 " [not found]\n", __FUNCTION__,
cache->name, id);
return NULL;
}
static inline display_cache_item *cache_add(display_cache *cache, uint64_t id)
{
display_cache_item *item;
item = spice_new0(display_cache_item, 1);
item->id = id;
ring_add(cache_head(cache, item->id), &item->hash_link);
ring_add(&cache->lru, &item->lru_link);
cache->nitems++;
#if 0
fprintf(stderr, "%s: %s %" PRIx64 " (%d)\n", __FUNCTION__,
cache->name, id, cache->nitems);
#endif
return item;
}
static inline void cache_del(display_cache *cache, display_cache_item *item)
{
#if 0
fprintf(stderr, "%s: %s %" PRIx64 "\n", __FUNCTION__,
cache->name, item->id);
#endif
ring_remove(&item->hash_link);
ring_remove(&item->lru_link);
free(item);
cache->nitems--;
}
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