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1 // Copyright (c) 2011 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 CHROME_BROWSER_SYNC_INTERNAL_API_READ_TRANSACTION_H_ | |
6 #define CHROME_BROWSER_SYNC_INTERNAL_API_READ_TRANSACTION_H_ | |
7 | |
8 #include "base/compiler_specific.h" | |
9 #include "chrome/browser/sync/internal_api/base_transaction.h" | |
10 | |
11 namespace tracked_objects { | |
12 class Location; | |
13 } // namespace tracked_objects | |
14 | |
15 namespace sync_api { | |
16 | |
17 struct UserShare; | |
18 | |
19 // Sync API's ReadTransaction is a read-only BaseTransaction. It wraps | |
20 // a syncable::ReadTransaction. | |
21 class ReadTransaction : public BaseTransaction { | |
22 public: | |
23 // Start a new read-only transaction on the specified repository. | |
24 ReadTransaction(const tracked_objects::Location& from_here, | |
25 UserShare* share); | |
26 | |
27 // Resume the middle of a transaction. Will not close transaction. | |
28 ReadTransaction(UserShare* share, syncable::BaseTransaction* trans); | |
29 | |
30 virtual ~ReadTransaction(); | |
31 | |
32 // BaseTransaction override. | |
33 virtual syncable::BaseTransaction* GetWrappedTrans() const OVERRIDE; | |
34 private: | |
35 void* operator new(size_t size); // Transaction is meant for stack use only. | |
36 | |
37 // The underlying syncable object which this class wraps. | |
38 syncable::BaseTransaction* transaction_; | |
39 bool close_transaction_; | |
40 | |
41 DISALLOW_COPY_AND_ASSIGN(ReadTransaction); | |
42 }; | |
43 | |
44 } // namespace sync_api | |
45 | |
46 #endif // CHROME_BROWSER_SYNC_INTERNAL_API_READ_TRANSACTION_H_ | |
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