d2a65c59e1
Summary: MSVC does not support unused attribute at this time. A separate assignment line fixes the issue probably by being counted as usage for MSVC and it no longer complains about unused var. Closes https://github.com/facebook/rocksdb/pull/3048 Differential Revision: D6126272 Pulled By: maysamyabandeh fbshipit-source-id: 4907865db45fd75a39a15725c0695aaa17509c1f
87 lines
2.2 KiB
C++
87 lines
2.2 KiB
C++
// Copyright (c) 2013, Facebook, Inc. All rights reserved.
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// This source code is licensed under both the GPLv2 (found in the
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// COPYING file in the root directory) and Apache 2.0 License
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// (found in the LICENSE.Apache file in the root directory).
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#ifndef ROCKSDB_LITE
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#include "utilities/persistent_cache/block_cache_tier_metadata.h"
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#include <functional>
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namespace rocksdb {
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bool BlockCacheTierMetadata::Insert(BlockCacheFile* file) {
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return cache_file_index_.Insert(file);
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}
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BlockCacheFile* BlockCacheTierMetadata::Lookup(const uint32_t cache_id) {
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BlockCacheFile* ret = nullptr;
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BlockCacheFile lookup_key(cache_id);
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bool ok = cache_file_index_.Find(&lookup_key, &ret);
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if (ok) {
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assert(ret->refs_);
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return ret;
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}
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return nullptr;
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}
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BlockCacheFile* BlockCacheTierMetadata::Evict() {
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using std::placeholders::_1;
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auto fn = std::bind(&BlockCacheTierMetadata::RemoveAllKeys, this, _1);
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return cache_file_index_.Evict(fn);
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}
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void BlockCacheTierMetadata::Clear() {
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cache_file_index_.Clear([](BlockCacheFile* arg){ delete arg; });
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block_index_.Clear([](BlockInfo* arg){ delete arg; });
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}
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BlockInfo* BlockCacheTierMetadata::Insert(const Slice& key, const LBA& lba) {
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std::unique_ptr<BlockInfo> binfo(new BlockInfo(key, lba));
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if (!block_index_.Insert(binfo.get())) {
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return nullptr;
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}
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return binfo.release();
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}
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bool BlockCacheTierMetadata::Lookup(const Slice& key, LBA* lba) {
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BlockInfo lookup_key(key);
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BlockInfo* block;
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port::RWMutex* rlock = nullptr;
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if (!block_index_.Find(&lookup_key, &block, &rlock)) {
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return false;
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}
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ReadUnlock _(rlock);
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assert(block->key_ == key.ToString());
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if (lba) {
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*lba = block->lba_;
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}
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return true;
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}
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BlockInfo* BlockCacheTierMetadata::Remove(const Slice& key) {
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BlockInfo lookup_key(key);
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BlockInfo* binfo = nullptr;
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bool ok __attribute__((__unused__));
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ok = block_index_.Erase(&lookup_key, &binfo);
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assert(ok);
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return binfo;
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}
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void BlockCacheTierMetadata::RemoveAllKeys(BlockCacheFile* f) {
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for (BlockInfo* binfo : f->block_infos()) {
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BlockInfo* tmp = nullptr;
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bool status = block_index_.Erase(binfo, &tmp);
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(void)status;
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assert(status);
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assert(tmp == binfo);
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delete binfo;
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}
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f->block_infos().clear();
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}
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} // namespace rocksdb
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#endif
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