- add sources.
[platform/framework/web/crosswalk.git] / src / sync / syncable / syncable_read_transaction.h
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 "sync/base/sync_export.h"
9 #include "sync/syncable/syncable_base_transaction.h"
10
11 namespace syncer {
12 class ReadTransaction;
13 namespace syncable {
14
15 // Locks db in constructor, unlocks in destructor.
16 class SYNC_EXPORT ReadTransaction : public BaseTransaction {
17  public:
18   ReadTransaction(const tracked_objects::Location& from_here,
19                   Directory* directory);
20
21   virtual ~ReadTransaction();
22
23  protected:  // Don't allow creation on heap, except by sync API wrapper.
24   friend class syncer::ReadTransaction;
25   void* operator new(size_t size) { return (::operator new)(size); }
26
27   DISALLOW_COPY_AND_ASSIGN(ReadTransaction);
28 };
29
30 }  // namespace syncable
31 }  // namespace syncer
32
33 #endif  // SYNC_SYNCABLE_SYNCABLE_READ_TRANSACTION_H_