/* * Copyright (C) 2017-2018 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. */ #pragma once #include <wtf/Forward.h> #include <wtf/MonotonicTime.h> #include <wtf/RunLoop.h> #include <wtf/WallTime.h> #include <wtf/WeakPtr.h> #include <wtf/WorkQueue.h> #include <wtf/text/WTFString.h> namespace WebCore { class FileMonitor; } namespace WebKit { class ResourceLoadStatisticsMemoryStore; // Can only be constructed / destroyed / used from the WebResourceLoadStatisticsStore's statistic queue. class ResourceLoadStatisticsPersistentStorage : public CanMakeWeakPtr<ResourceLoadStatisticsPersistentStorage> { public: ResourceLoadStatisticsPersistentStorage(ResourceLoadStatisticsMemoryStore&, WorkQueue&, const String& storageDirectoryPath); ~ResourceLoadStatisticsPersistentStorage(); void clear(); enum class ForceImmediateWrite { No, Yes, }; void scheduleOrWriteMemoryStore(ForceImmediateWrite); private: String storageDirectoryPath() const; String resourceLogFilePath() const; void startMonitoringDisk(); void stopMonitoringDisk(); void monitorDirectoryForNewStatistics(); void writeMemoryStoreToDisk(); void populateMemoryStoreFromDisk(); void excludeFromBackup() const; void refreshMemoryStoreFromDisk(); ResourceLoadStatisticsMemoryStore& m_memoryStore; Ref<WorkQueue> m_workQueue; const String m_storageDirectoryPath; std::unique_ptr<WebCore::FileMonitor> m_fileMonitor; WallTime m_lastStatisticsFileSyncTime; MonotonicTime m_lastStatisticsWriteTime; bool m_hasPendingWrite { false }; }; }