/* * Copyright (C) 2017-2019 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 namespace WebCore { struct ResourceLoadStatistics; } namespace WebKit { enum ResourceLoadPrevalence { Low = 1 << 0, High = 1 << 1, VeryHigh = 1 << 2, }; class ResourceLoadStatisticsClassifier { public: ResourceLoadStatisticsClassifier() = default; virtual ~ResourceLoadStatisticsClassifier() = default; ResourceLoadPrevalence calculateResourcePrevalence(const WebCore::ResourceLoadStatistics& resourceStatistic, ResourceLoadPrevalence currentPrevalence); ResourceLoadPrevalence calculateResourcePrevalence(unsigned subresourceUnderTopFrameDomainsCount, unsigned subresourceUniqueRedirectsToCount, unsigned subframeUnderTopFrameOriginsCount, unsigned topFrameUniqueRedirectsToCount, ResourceLoadPrevalence currentPrevalence); protected: virtual bool classify(unsigned subresourceUnderTopFrameDomainsCount, unsigned subresourceUniqueRedirectsToCount, unsigned subframeUnderTopFrameOriginsCount) { return classifyWithVectorThreshold(subresourceUnderTopFrameDomainsCount, subresourceUniqueRedirectsToCount, subframeUnderTopFrameOriginsCount); } bool classifyWithVectorThreshold(unsigned, unsigned, unsigned); }; }