2 * Copyright (C) 2017-2018 Apple Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
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11 * documentation and/or other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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28 #include <wtf/Forward.h>
29 #include <wtf/MonotonicTime.h>
30 #include <wtf/RunLoop.h>
31 #include <wtf/WallTime.h>
32 #include <wtf/WeakPtr.h>
33 #include <wtf/WorkQueue.h>
34 #include <wtf/text/WTFString.h>
42 class ResourceLoadStatisticsMemoryStore;
44 // Can only be constructed / destroyed / used from the WebResourceLoadStatisticsStore's statistic queue.
45 class ResourceLoadStatisticsPersistentStorage : public CanMakeWeakPtr<ResourceLoadStatisticsPersistentStorage> {
47 ResourceLoadStatisticsPersistentStorage(ResourceLoadStatisticsMemoryStore&, WorkQueue&, const String& storageDirectoryPath);
48 ~ResourceLoadStatisticsPersistentStorage();
52 enum class ForceImmediateWrite { No, Yes, };
53 void scheduleOrWriteMemoryStore(ForceImmediateWrite);
56 String storageDirectoryPath() const;
57 String resourceLogFilePath() const;
59 void startMonitoringDisk();
60 void stopMonitoringDisk();
61 void monitorDirectoryForNewStatistics();
63 void writeMemoryStoreToDisk();
64 void populateMemoryStoreFromDisk();
65 void excludeFromBackup() const;
66 void refreshMemoryStoreFromDisk();
68 ResourceLoadStatisticsMemoryStore& m_memoryStore;
69 Ref<WorkQueue> m_workQueue;
70 const String m_storageDirectoryPath;
71 std::unique_ptr<WebCore::FileMonitor> m_fileMonitor;
72 WallTime m_lastStatisticsFileSyncTime;
73 MonotonicTime m_lastStatisticsWriteTime;
74 bool m_hasPendingWrite { false };