| /* |
| * 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 |