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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     16  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     17  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     18  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     19  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     20  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     21  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     23  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef IDBPendingTransactionMonitor_h
     27 #define IDBPendingTransactionMonitor_h
     28 
     29 #include "wtf/Noncopyable.h"
     30 #include "wtf/Vector.h"
     31 
     32 namespace WebCore {
     33 
     34 class IDBTransaction;
     35 
     36 // This class keeps track of the transactions created during the current
     37 // Javascript execution context. Transactions have an internal |active| flag
     38 // which is set to true on creation, but must be set to false when control
     39 // returns to the event loop.
     40 
     41 class IDBPendingTransactionMonitor {
     42     WTF_MAKE_NONCOPYABLE(IDBPendingTransactionMonitor);
     43 public:
     44     static void addNewTransaction(PassRefPtr<IDBTransaction>);
     45     static void deactivateNewTransactions();
     46 
     47 private:
     48     IDBPendingTransactionMonitor();
     49 };
     50 
     51 } // namespace WebCore
     52 
     53 #endif // IDBPendingTransactionMonitor_h
     54