56 lines
1.8 KiB
C++
56 lines
1.8 KiB
C++
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include "util/obj_lru_cache.h"
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namespace doris {
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ObjLRUCache::ObjLRUCache(int64_t capacity, uint32_t num_shards)
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: LRUCachePolicyTrackingManual(
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CachePolicy::CacheType::COMMON_OBJ_LRU_CACHE, capacity, LRUCacheType::NUMBER,
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config::common_obj_lru_cache_stale_sweep_time_sec, num_shards) {
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_enabled = (capacity > 0);
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}
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bool ObjLRUCache::lookup(const ObjKey& key, CacheHandle* handle) {
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if (!_enabled) {
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return false;
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}
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auto* lru_handle = LRUCachePolicy::lookup(key.key);
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if (!lru_handle) {
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// cache miss
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return false;
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}
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*handle = CacheHandle(this, lru_handle);
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return true;
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}
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void ObjLRUCache::erase(const ObjKey& key) {
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if (_enabled) {
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LRUCachePolicy::erase(key.key);
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}
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}
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bool ObjLRUCache::exceed_prune_limit() {
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// just return true to prune all cached obj.
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// Because ObjLRUCache is counted with number, not memory.
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// Simple prune all
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return true;
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}
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} // namespace doris
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