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#include "config.h"
27#include "IDBPendingTransactionMonitor.h"
28#include "IDBTransaction.h"
29#include <mutex>
30#include <wtf/ThreadSpecific.h>
31
32using WTF::ThreadSpecific;
33
34#if ENABLE(INDEXED_DATABASE)
35
36namespace WebCore {
37
38typedef Vector<RefPtr<IDBTransaction>> TransactionList;
39
40static ThreadSpecific<TransactionList>& transactions()
41{
42    // FIXME: Move the Vector to ScriptExecutionContext to avoid dealing with
43    // thread-local storage.
44    static std::once_flag onceFlag;
45    static ThreadSpecific<TransactionList>* transactions;
46    std::call_once(onceFlag, []{
47        transactions = new ThreadSpecific<TransactionList>;
48    });
49
50    return *transactions;
51}
52
53void IDBPendingTransactionMonitor::addNewTransaction(PassRefPtr<IDBTransaction> transaction)
54{
55    transactions()->append(transaction);
56}
57
58void IDBPendingTransactionMonitor::deactivateNewTransactions()
59{
60    ThreadSpecific<TransactionList>& list = transactions();
61    for (size_t i = 0; i < list->size(); ++i) {
62        RefPtr<IDBTransaction> transaction = list->at(i);
63        transaction->setActive(false);
64    }
65    // FIXME: Exercise this call to clear() in a layout test.
66    list->clear();
67}
68
69};
70#endif // ENABLE(INDEXED_DATABASE)
71