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/*
* Copyright (C) 2010 Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef IDBPendingTransactionMonitor_h
#define IDBPendingTransactionMonitor_h
#if ENABLE(INDEXED_DATABASE)
#include <wtf/Noncopyable.h>
#include <wtf/Vector.h>
namespace WebCore {
class IDBTransactionBackendInterface;
// This class keeps track of the transactions created during the current
// Javascript execution context. A transaction is 'pending' if no asynchronous
// operation is currently queued for it (e.g. an IDBObjectStore::put() or similar).
// All pending transactions are aborted as soon as execution returns from
// the script engine.
//
// FIXME: move the vector of transactions to TLS. Keeping it static
// will not work once we add support for workers. Another possible
// solution is to keep the vector in the ScriptExecutionContext.
class IDBPendingTransactionMonitor : public Noncopyable {
public:
static void addPendingTransaction(IDBTransactionBackendInterface*);
static void removePendingTransaction(IDBTransactionBackendInterface*);
static void abortPendingTransactions();
private:
IDBPendingTransactionMonitor();
static Vector<IDBTransactionBackendInterface*>* m_transactions;
};
} // namespace WebCore
#endif // ENABLE(INDEXED_DATABASE)
#endif // IDBPendingTransactionMonitor_h
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