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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef SYNC_SYNCABLE_IN_MEMORY_DIRECTORY_BACKING_STORE_H_ | 5 #ifndef SYNC_SYNCABLE_IN_MEMORY_DIRECTORY_BACKING_STORE_H_ |
6 #define SYNC_SYNCABLE_IN_MEMORY_DIRECTORY_BACKING_STORE_H_ | 6 #define SYNC_SYNCABLE_IN_MEMORY_DIRECTORY_BACKING_STORE_H_ |
7 | 7 |
8 #include "sync/syncable/directory_backing_store.h" | 8 #include "sync/syncable/directory_backing_store.h" |
9 #include "sync/base/sync_export.h" | 9 #include "sync/base/sync_export.h" |
10 | 10 |
11 namespace syncer { | 11 namespace syncer { |
12 namespace syncable { | 12 namespace syncable { |
13 | 13 |
14 // This implementation of DirectoryBackingStore is used in tests that do not | 14 // This implementation of DirectoryBackingStore is used in tests that do not |
15 // require us to write to a file. An in-memory sqlite database is much faster | 15 // require us to write to a file. An in-memory sqlite database is much faster |
16 // than an on-disk database, so this can result in significant speedups in our | 16 // than an on-disk database, so this can result in significant speedups in our |
17 // unit tests. | 17 // unit tests. |
18 // | 18 // |
19 // An InMemoryDirectoryBackingStore cannot load data from existing databases. | 19 // An InMemoryDirectoryBackingStore cannot load data from existing databases. |
20 // When an InMemoryDirectoryBackingStore is destroyed, all data stored in this | 20 // When an InMemoryDirectoryBackingStore is destroyed, all data stored in this |
21 // database is lost. If these limitations are a problem for you, consider using | 21 // database is lost. If these limitations are a problem for you, consider using |
22 // TestDirectoryBackingStore. | 22 // TestDirectoryBackingStore. |
23 class SYNC_EXPORT_PRIVATE InMemoryDirectoryBackingStore | 23 class SYNC_EXPORT_PRIVATE InMemoryDirectoryBackingStore |
24 : public DirectoryBackingStore { | 24 : public DirectoryBackingStore { |
25 public: | 25 public: |
26 explicit InMemoryDirectoryBackingStore(const std::string& dir_name); | 26 explicit InMemoryDirectoryBackingStore(const std::string& dir_name); |
27 virtual DirOpenResult Load( | 27 virtual DirOpenResult Load( |
28 Directory::MetahandlesMap* handles_map, | 28 Directory::MetahandlesMap* handles_map, |
29 JournalIndex* delete_journals, | 29 JournalIndex* delete_journals, |
30 Directory::KernelLoadInfo* kernel_load_info) OVERRIDE; | 30 Directory::KernelLoadInfo* kernel_load_info) override; |
31 | 31 |
32 void request_consistent_cache_guid() { | 32 void request_consistent_cache_guid() { |
33 consistent_cache_guid_requested_ = true; | 33 consistent_cache_guid_requested_ = true; |
34 } | 34 } |
35 | 35 |
36 private: | 36 private: |
37 bool consistent_cache_guid_requested_; | 37 bool consistent_cache_guid_requested_; |
38 | 38 |
39 DISALLOW_COPY_AND_ASSIGN(InMemoryDirectoryBackingStore); | 39 DISALLOW_COPY_AND_ASSIGN(InMemoryDirectoryBackingStore); |
40 }; | 40 }; |
41 | 41 |
42 } // namespace syncable | 42 } // namespace syncable |
43 } // namespace syncer | 43 } // namespace syncer |
44 | 44 |
45 #endif // SYNC_SYNCABLE_IN_MEMORY_DIRECTORY_BACKING_STORE_H_ | 45 #endif // SYNC_SYNCABLE_IN_MEMORY_DIRECTORY_BACKING_STORE_H_ |
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