void *git_cache_try_store(git_cache *cache, void *entry)
{
uint32_t hash;
const git_oid *oid;
cache_node *node = NULL;
oid = &((git_cached_obj*)entry)->oid;
memcpy(&hash, oid->id, sizeof(hash));
node = &cache->nodes[hash & cache->size_mask];
/* increase the refcount on this object, because
* the cache now owns it */
git_cached_obj_incref(entry);
git_mutex_lock(&node->lock);
if (node->ptr == NULL) {
node->ptr = entry;
} else if (git_cached_obj_compare(node->ptr, oid) == 0) {
git_cached_obj_decref(entry, cache->free_obj);
entry = node->ptr;
} else {
git_cached_obj_decref(node->ptr, cache->free_obj);
node->ptr = entry;
}
/* increase the refcount again, because we are
* returning it to the user */
git_cached_obj_incref(entry);
git_mutex_unlock(&node->lock);
return entry;
}
void git_object_free(git_object *object)
{
if (object == NULL)
return;
git_cached_obj_decref(object);
}
void git_cache_free(git_cache *cache)
{
size_t i;
for (i = 0; i < (cache->size_mask + 1); ++i) {
if (cache->nodes[i].ptr)
git_cached_obj_decref(cache->nodes[i].ptr, cache->free_obj);
git_mutex_free(&cache->nodes[i].lock);
}
free(cache->nodes);
}
