fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
52 lines
1.6 KiB
52 lines
1.6 KiB
// Copyright (c) Meta Platforms, Inc. and affiliates.
|
|
// 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).
|
|
|
|
#pragma once
|
|
|
|
#include "rocksdb/secondary_cache.h"
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
class CacheWithSecondaryAdapter : public CacheWrapper {
|
|
public:
|
|
explicit CacheWithSecondaryAdapter(
|
|
std::shared_ptr<Cache> target,
|
|
std::shared_ptr<SecondaryCache> secondary_cache);
|
|
|
|
~CacheWithSecondaryAdapter() override;
|
|
|
|
Handle* Lookup(const Slice& key, const CacheItemHelper* helper,
|
|
CreateContext* create_context,
|
|
Priority priority = Priority::LOW,
|
|
Statistics* stats = nullptr) override;
|
|
|
|
ObjectPtr Value(Handle* handle) override;
|
|
|
|
void StartAsyncLookup(AsyncLookupHandle& async_handle) override;
|
|
|
|
void WaitAll(AsyncLookupHandle* async_handles, size_t count) override;
|
|
|
|
std::string GetPrintableOptions() const override;
|
|
|
|
const char* Name() const override;
|
|
|
|
private:
|
|
bool EvictionHandler(const Slice& key, Handle* handle);
|
|
|
|
void StartAsyncLookupOnMySecondary(AsyncLookupHandle& async_handle);
|
|
|
|
Handle* Promote(
|
|
std::unique_ptr<SecondaryCacheResultHandle>&& secondary_handle,
|
|
const Slice& key, const CacheItemHelper* helper, Priority priority,
|
|
Statistics* stats, bool found_dummy_entry, bool kept_in_sec_cache);
|
|
|
|
bool ProcessDummyResult(Cache::Handle** handle, bool erase);
|
|
|
|
void CleanupCacheObject(ObjectPtr obj, const CacheItemHelper* helper);
|
|
|
|
std::shared_ptr<SecondaryCache> secondary_cache_;
|
|
};
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|