1/*
2 * Copyright (C) 2017-2019 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
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
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28namespace WebCore {
29struct ResourceLoadStatistics;
30}
31
32namespace WebKit {
33
34enum ResourceLoadPrevalence {
35 Low = 1 << 0,
36 High = 1 << 1,
37 VeryHigh = 1 << 2,
38};
39
40class ResourceLoadStatisticsClassifier {
41public:
42 ResourceLoadStatisticsClassifier() = default;
43 virtual ~ResourceLoadStatisticsClassifier() = default;
44 ResourceLoadPrevalence calculateResourcePrevalence(const WebCore::ResourceLoadStatistics& resourceStatistic, ResourceLoadPrevalence currentPrevalence);
45 ResourceLoadPrevalence calculateResourcePrevalence(unsigned subresourceUnderTopFrameDomainsCount, unsigned subresourceUniqueRedirectsToCount, unsigned subframeUnderTopFrameOriginsCount, unsigned topFrameUniqueRedirectsToCount, ResourceLoadPrevalence currentPrevalence);
46protected:
47 virtual bool classify(unsigned subresourceUnderTopFrameDomainsCount, unsigned subresourceUniqueRedirectsToCount, unsigned subframeUnderTopFrameOriginsCount)
48 {
49 return classifyWithVectorThreshold(subresourceUnderTopFrameDomainsCount, subresourceUniqueRedirectsToCount, subframeUnderTopFrameOriginsCount);
50 }
51 bool classifyWithVectorThreshold(unsigned, unsigned, unsigned);
52};
53
54}
55