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/*
* Copyright (C) 2014 Apple 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 INC. 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 INC. 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.
*/
#include "config.h"
#include "WebSQLiteDatabaseTracker.h"
#include <WebCore/SQLiteDatabaseTracker.h>
namespace WebKit {
using namespace WebCore;
WebSQLiteDatabaseTracker::WebSQLiteDatabaseTracker(IsHoldingLockedFilesHandler&& isHoldingLockedFilesHandler)
: m_isHoldingLockedFilesHandler(WTFMove(isHoldingLockedFilesHandler))
{
ASSERT(RunLoop::isMain());
SQLiteDatabaseTracker::setClient(this);
}
WebSQLiteDatabaseTracker::~WebSQLiteDatabaseTracker()
{
ASSERT(RunLoop::isMain());
SQLiteDatabaseTracker::setClient(nullptr);
if (m_currentHystererisID)
setIsHoldingLockedFiles(false);
}
void WebSQLiteDatabaseTracker::setIsSuspended(bool isSuspended)
{
ASSERT(RunLoop::isMain());
Locker locker { m_lock };
m_isSuspended = isSuspended;
}
void WebSQLiteDatabaseTracker::willBeginFirstTransaction()
{
Locker locker { m_lock };
if (m_currentHystererisID) {
// Cancel previous hysteresis task.
++m_currentHystererisID;
return;
}
setIsHoldingLockedFiles(true);
}
void WebSQLiteDatabaseTracker::didFinishLastTransaction()
{
Locker locker { m_lock };
RunLoop::main().dispatchAfter(1_s, [this, weakThis = WeakPtr { *this }, hystererisID = ++m_currentHystererisID] {
if (!weakThis)
return;
Locker locker { m_lock };
if (m_currentHystererisID != hystererisID)
return; // Cancelled.
m_currentHystererisID = 0;
setIsHoldingLockedFiles(false);
});
}
void WebSQLiteDatabaseTracker::setIsHoldingLockedFiles(bool isHoldingLockedFiles)
{
if (m_isSuspended)
return;
m_isHoldingLockedFilesHandler(isHoldingLockedFiles);
}
} // namespace WebKit
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