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1 // Copyright 2012 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef SYNC_SYNCABLE_IN_MEMORY_DIRECTORY_BACKING_STORE_H_ | |
6 #define SYNC_SYNCABLE_IN_MEMORY_DIRECTORY_BACKING_STORE_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "base/macros.h" | |
11 #include "sync/base/sync_export.h" | |
12 #include "sync/syncable/directory_backing_store.h" | |
13 | |
14 namespace syncer { | |
15 namespace syncable { | |
16 | |
17 // This implementation of DirectoryBackingStore is used in tests that do not | |
18 // require us to write to a file. An in-memory sqlite database is much faster | |
19 // than an on-disk database, so this can result in significant speedups in our | |
20 // unit tests. | |
21 // | |
22 // An InMemoryDirectoryBackingStore cannot load data from existing databases. | |
23 // When an InMemoryDirectoryBackingStore is destroyed, all data stored in this | |
24 // database is lost. If these limitations are a problem for you, consider using | |
25 // TestDirectoryBackingStore. | |
26 class SYNC_EXPORT InMemoryDirectoryBackingStore : public DirectoryBackingStore { | |
27 public: | |
28 explicit InMemoryDirectoryBackingStore(const std::string& dir_name); | |
29 DirOpenResult Load(Directory::MetahandlesMap* handles_map, | |
30 JournalIndex* delete_journals, | |
31 MetahandleSet* metahandles_to_purge, | |
32 Directory::KernelLoadInfo* kernel_load_info) override; | |
33 | |
34 private: | |
35 DISALLOW_COPY_AND_ASSIGN(InMemoryDirectoryBackingStore); | |
36 }; | |
37 | |
38 } // namespace syncable | |
39 } // namespace syncer | |
40 | |
41 #endif // SYNC_SYNCABLE_IN_MEMORY_DIRECTORY_BACKING_STORE_H_ | |
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