chromium/components/services/storage/dom_storage/dom_storage_database.h

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_SERVICES_STORAGE_DOM_STORAGE_DOM_STORAGE_DATABASE_H_
#define COMPONENTS_SERVICES_STORAGE_DOM_STORAGE_DOM_STORAGE_DATABASE_H_

#include <stdint.h>

#include <memory>
#include <optional>
#include <string>
#include <vector>

#include "base/containers/span.h"
#include "base/files/file_path.h"
#include "base/functional/callback.h"
#include "base/memory/scoped_refptr.h"
#include "base/sequence_checker.h"
#include "base/task/sequenced_task_runner.h"
#include "base/threading/sequence_bound.h"
#include "base/trace_event/memory_allocator_dump_guid.h"
#include "base/trace_event/memory_dump_provider.h"
#include "base/types/pass_key.h"
#include "third_party/leveldatabase/env_chromium.h"
#include "third_party/leveldatabase/src/include/leveldb/db.h"
#include "third_party/leveldatabase/src/include/leveldb/env.h"
#include "third_party/leveldatabase/src/include/leveldb/write_batch.h"

namespace storage {

// Wraps its own leveldb::DB instance on behalf of the DOM Storage backend
// implementation. This object is not sequence-safe and must be instantiated on
// a sequence which allows use of blocking file operations.
//
// Use the static |OpenInMemory()| or |OpenDirectory()| helpers to
// asynchronously create an instance of this type from any sequence.
// When owning a SequenceBound<DomStorageDatabase> as produced by these helpers,
// all work on the DomStorageDatabase can be safely done via
// |SequenceBound::PostTaskWithThisObject|.
class DomStorageDatabase : private base::trace_event::MemoryDumpProvider { … };

}  // namespace storage

#endif  // COMPONENTS_SERVICES_STORAGE_DOM_STORAGE_DOM_STORAGE_DATABASE_H_