79 lines
2.8 KiB
C++
79 lines
2.8 KiB
C++
/*
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* Copyright (C) 2010, 2012 Apple Inc. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "SQLiteDatabaseTracker.h"
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#include <mutex>
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#include <wtf/Lock.h>
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namespace WebCore {
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namespace SQLiteDatabaseTracker {
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static Lock transactionInProgressLock;
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static SQLiteDatabaseTrackerClient* s_staticSQLiteDatabaseTrackerClient WTF_GUARDED_BY_LOCK(transactionInProgressLock) { nullptr };
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static unsigned s_transactionInProgressCounter WTF_GUARDED_BY_LOCK(transactionInProgressLock) { 0 };
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void setClient(SQLiteDatabaseTrackerClient* client)
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{
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Locker locker { transactionInProgressLock };
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s_staticSQLiteDatabaseTrackerClient = client;
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}
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void incrementTransactionInProgressCount()
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{
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Locker locker { transactionInProgressLock };
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if (!s_staticSQLiteDatabaseTrackerClient)
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return;
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s_transactionInProgressCounter++;
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if (s_transactionInProgressCounter == 1)
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s_staticSQLiteDatabaseTrackerClient->willBeginFirstTransaction();
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}
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void decrementTransactionInProgressCount()
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{
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Locker locker { transactionInProgressLock };
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if (!s_staticSQLiteDatabaseTrackerClient)
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return;
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ASSERT(s_transactionInProgressCounter);
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s_transactionInProgressCounter--;
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if (!s_transactionInProgressCounter)
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s_staticSQLiteDatabaseTrackerClient->didFinishLastTransaction();
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}
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bool hasTransactionInProgress()
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{
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Locker locker { transactionInProgressLock };
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return !s_staticSQLiteDatabaseTrackerClient || s_transactionInProgressCounter > 0;
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}
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} // namespace SQLiteDatabaseTracker
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} // namespace WebCore
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