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_ 34
