7b74b199a5
In order to add common code to the value deleter of LRU cache, let all lru cache values inherit from LRUCacheValueBase class and tracking memory in destructor.
87 lines
3.1 KiB
C++
87 lines
3.1 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 "olap/segment_loader.h"
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#include "common/config.h"
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#include "olap/olap_define.h"
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#include "olap/rowset/beta_rowset.h"
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#include "util/stopwatch.hpp"
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namespace doris {
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SegmentLoader* SegmentLoader::instance() {
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return ExecEnv::GetInstance()->segment_loader();
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}
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bool SegmentCache::lookup(const SegmentCache::CacheKey& key, SegmentCacheHandle* handle) {
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auto* lru_handle = LRUCachePolicy::lookup(key.encode());
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if (lru_handle == nullptr) {
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return false;
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}
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handle->push_segment(this, lru_handle);
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return true;
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}
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void SegmentCache::insert(const SegmentCache::CacheKey& key, SegmentCache::CacheValue& value,
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SegmentCacheHandle* handle) {
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auto* lru_handle = LRUCachePolicy::insert(
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key.encode(), &value, 1, value.segment->meta_mem_usage(), CachePriority::NORMAL);
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handle->push_segment(this, lru_handle);
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}
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void SegmentCache::erase(const SegmentCache::CacheKey& key) {
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LRUCachePolicy::erase(key.encode());
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}
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Status SegmentLoader::load_segments(const BetaRowsetSharedPtr& rowset,
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SegmentCacheHandle* cache_handle, bool use_cache) {
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if (cache_handle->is_inited()) {
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return Status::OK();
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}
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for (int64_t i = 0; i < rowset->num_segments(); i++) {
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SegmentCache::CacheKey cache_key(rowset->rowset_id(), i);
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if (_segment_cache->lookup(cache_key, cache_handle)) {
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continue;
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}
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segment_v2::SegmentSharedPtr segment;
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RETURN_IF_ERROR(rowset->load_segment(i, &segment));
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if (use_cache && !config::disable_segment_cache) {
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// memory of SegmentCache::CacheValue will be handled by SegmentCache
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auto* cache_value = new SegmentCache::CacheValue();
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cache_value->segment = std::move(segment);
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_segment_cache->insert(cache_key, *cache_value, cache_handle);
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} else {
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cache_handle->push_segment(std::move(segment));
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}
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}
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cache_handle->set_inited();
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return Status::OK();
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}
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void SegmentLoader::erase_segment(const SegmentCache::CacheKey& key) {
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_segment_cache->erase(key);
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}
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void SegmentLoader::erase_segments(const RowsetId& rowset_id, int64_t num_segments) {
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for (int64_t i = 0; i < num_segments; i++) {
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erase_segment(SegmentCache::CacheKey(rowset_id, i));
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}
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}
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} // namespace doris
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