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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/cache/secondary_cache.cc | |
parent | Initial commit. (diff) | |
download | ceph-upstream/18.2.2.tar.xz ceph-upstream/18.2.2.zip |
Adding upstream version 18.2.2.upstream/18.2.2
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/rocksdb/cache/secondary_cache.cc')
-rw-r--r-- | src/rocksdb/cache/secondary_cache.cc | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/src/rocksdb/cache/secondary_cache.cc b/src/rocksdb/cache/secondary_cache.cc new file mode 100644 index 000000000..84352db71 --- /dev/null +++ b/src/rocksdb/cache/secondary_cache.cc @@ -0,0 +1,32 @@ +// Copyright (c) 2011-present, 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). + +#include "rocksdb/secondary_cache.h" + +#include "cache/cache_entry_roles.h" + +namespace ROCKSDB_NAMESPACE { + +namespace { + +size_t SliceSize(void* obj) { return static_cast<Slice*>(obj)->size(); } + +Status SliceSaveTo(void* from_obj, size_t from_offset, size_t length, + void* out) { + const Slice& slice = *static_cast<Slice*>(from_obj); + std::memcpy(out, slice.data() + from_offset, length); + return Status::OK(); +} + +} // namespace + +Status SecondaryCache::InsertSaved(const Slice& key, const Slice& saved) { + static Cache::CacheItemHelper helper{ + &SliceSize, &SliceSaveTo, GetNoopDeleterForRole<CacheEntryRole::kMisc>()}; + // NOTE: depends on Insert() being synchronous, not keeping pointer `&saved` + return Insert(key, const_cast<Slice*>(&saved), &helper); +} + +} // namespace ROCKSDB_NAMESPACE |