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// Copyright 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SYNC_SYNCABLE_IN_MEMORY_DIRECTORY_BACKING_STORE_H_
#define SYNC_SYNCABLE_IN_MEMORY_DIRECTORY_BACKING_STORE_H_
#include <string>
#include "base/macros.h"
#include "sync/base/sync_export.h"
#include "sync/syncable/directory_backing_store.h"
namespace syncer {
namespace syncable {
// This implementation of DirectoryBackingStore is used in tests that do not
// require us to write to a file. An in-memory sqlite database is much faster
// than an on-disk database, so this can result in significant speedups in our
// unit tests.
//
// An InMemoryDirectoryBackingStore cannot load data from existing databases.
// When an InMemoryDirectoryBackingStore is destroyed, all data stored in this
// database is lost. If these limitations are a problem for you, consider using
// TestDirectoryBackingStore.
class SYNC_EXPORT InMemoryDirectoryBackingStore : public DirectoryBackingStore {
public:
explicit InMemoryDirectoryBackingStore(const std::string& dir_name);
DirOpenResult Load(Directory::MetahandlesMap* handles_map,
JournalIndex* delete_journals,
MetahandleSet* metahandles_to_purge,
Directory::KernelLoadInfo* kernel_load_info) override;
private:
DISALLOW_COPY_AND_ASSIGN(InMemoryDirectoryBackingStore);
};
} // namespace syncable
} // namespace syncer
#endif // SYNC_SYNCABLE_IN_MEMORY_DIRECTORY_BACKING_STORE_H_
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