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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_SYNCABLE_READ_TRANSACTION_H_ | |
6 #define SYNC_SYNCABLE_SYNCABLE_READ_TRANSACTION_H_ | |
7 | |
8 #include <stddef.h> | |
9 | |
10 #include "base/macros.h" | |
11 #include "sync/base/sync_export.h" | |
12 #include "sync/syncable/syncable_base_transaction.h" | |
13 | |
14 namespace syncer { | |
15 class ReadTransaction; | |
16 namespace syncable { | |
17 | |
18 // Locks db in constructor, unlocks in destructor. | |
19 class SYNC_EXPORT ReadTransaction : public BaseTransaction { | |
20 public: | |
21 ReadTransaction(const tracked_objects::Location& from_here, | |
22 Directory* directory); | |
23 | |
24 ~ReadTransaction() override; | |
25 | |
26 protected: // Don't allow creation on heap, except by sync API wrapper. | |
27 void* operator new(size_t size) { return (::operator new)(size); } | |
28 | |
29 private: | |
30 friend class syncer::ReadTransaction; | |
31 | |
32 DISALLOW_COPY_AND_ASSIGN(ReadTransaction); | |
33 }; | |
34 | |
35 } // namespace syncable | |
36 } // namespace syncer | |
37 | |
38 #endif // SYNC_SYNCABLE_SYNCABLE_READ_TRANSACTION_H_ | |
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