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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-21 11:54:28 +0000 |
commit | e6918187568dbd01842d8d1d2c808ce16a894239 (patch) | |
tree | 64f88b554b444a49f656b6c656111a145cbbaa28 /src/rocksdb/utilities/persistent_cache/block_cache_tier_metadata.cc | |
parent | Initial commit. (diff) | |
download | ceph-b26c4052f3542036551aa9dec9caa4226e456195.tar.xz ceph-b26c4052f3542036551aa9dec9caa4226e456195.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/rocksdb/utilities/persistent_cache/block_cache_tier_metadata.cc | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/src/rocksdb/utilities/persistent_cache/block_cache_tier_metadata.cc b/src/rocksdb/utilities/persistent_cache/block_cache_tier_metadata.cc new file mode 100644 index 000000000..d73b5d0b4 --- /dev/null +++ b/src/rocksdb/utilities/persistent_cache/block_cache_tier_metadata.cc @@ -0,0 +1,86 @@ +// Copyright (c) 2013, Facebook, Inc. All rights reserved. +// This source code is licensed under both the GPLv2 (found in the +// COPYING file in the root directory) and Apache 2.0 License +// (found in the LICENSE.Apache file in the root directory). +#ifndef ROCKSDB_LITE + +#include "utilities/persistent_cache/block_cache_tier_metadata.h" + +#include <functional> + +namespace ROCKSDB_NAMESPACE { + +bool BlockCacheTierMetadata::Insert(BlockCacheFile* file) { + return cache_file_index_.Insert(file); +} + +BlockCacheFile* BlockCacheTierMetadata::Lookup(const uint32_t cache_id) { + BlockCacheFile* ret = nullptr; + BlockCacheFile lookup_key(cache_id); + bool ok = cache_file_index_.Find(&lookup_key, &ret); + if (ok) { + assert(ret->refs_); + return ret; + } + return nullptr; +} + +BlockCacheFile* BlockCacheTierMetadata::Evict() { + using std::placeholders::_1; + auto fn = std::bind(&BlockCacheTierMetadata::RemoveAllKeys, this, _1); + return cache_file_index_.Evict(fn); +} + +void BlockCacheTierMetadata::Clear() { + cache_file_index_.Clear([](BlockCacheFile* arg) { delete arg; }); + block_index_.Clear([](BlockInfo* arg) { delete arg; }); +} + +BlockInfo* BlockCacheTierMetadata::Insert(const Slice& key, const LBA& lba) { + std::unique_ptr<BlockInfo> binfo(new BlockInfo(key, lba)); + if (!block_index_.Insert(binfo.get())) { + return nullptr; + } + return binfo.release(); +} + +bool BlockCacheTierMetadata::Lookup(const Slice& key, LBA* lba) { + BlockInfo lookup_key(key); + BlockInfo* block; + port::RWMutex* rlock = nullptr; + if (!block_index_.Find(&lookup_key, &block, &rlock)) { + return false; + } + + ReadUnlock _(rlock); + assert(block->key_ == key.ToString()); + if (lba) { + *lba = block->lba_; + } + return true; +} + +BlockInfo* BlockCacheTierMetadata::Remove(const Slice& key) { + BlockInfo lookup_key(key); + BlockInfo* binfo = nullptr; + bool ok __attribute__((__unused__)); + ok = block_index_.Erase(&lookup_key, &binfo); + assert(ok); + return binfo; +} + +void BlockCacheTierMetadata::RemoveAllKeys(BlockCacheFile* f) { + for (BlockInfo* binfo : f->block_infos()) { + BlockInfo* tmp = nullptr; + bool status = block_index_.Erase(binfo, &tmp); + (void)status; + assert(status); + assert(tmp == binfo); + delete binfo; + } + f->block_infos().clear(); +} + +} // namespace ROCKSDB_NAMESPACE + +#endif |