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); }