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1 /* | 1 /* |
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) | 2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
3 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc.
All rights reserved. | 3 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc.
All rights reserved. |
4 * Copyright (C) 2013 Google Inc. All rights reserved. | 4 * Copyright (C) 2013 Google Inc. All rights reserved. |
5 * | 5 * |
6 * This library is free software; you can redistribute it and/or | 6 * This library is free software; you can redistribute it and/or |
7 * modify it under the terms of the GNU Library General Public | 7 * modify it under the terms of the GNU Library General Public |
8 * License as published by the Free Software Foundation; either | 8 * License as published by the Free Software Foundation; either |
9 * version 2 of the License, or (at your option) any later version. | 9 * version 2 of the License, or (at your option) any later version. |
10 * | 10 * |
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36 class ComputedStyle; | 36 class ComputedStyle; |
37 class StyleResolverState; | 37 class StyleResolverState; |
38 | 38 |
39 class CachedMatchedProperties final : public NoBaseWillBeGarbageCollectedFinaliz
ed<CachedMatchedProperties> { | 39 class CachedMatchedProperties final : public NoBaseWillBeGarbageCollectedFinaliz
ed<CachedMatchedProperties> { |
40 | 40 |
41 public: | 41 public: |
42 WillBeHeapVector<MatchedProperties> matchedProperties; | 42 WillBeHeapVector<MatchedProperties> matchedProperties; |
43 RefPtr<ComputedStyle> computedStyle; | 43 RefPtr<ComputedStyle> computedStyle; |
44 RefPtr<ComputedStyle> parentComputedStyle; | 44 RefPtr<ComputedStyle> parentComputedStyle; |
45 | 45 |
46 void set(const ComputedStyle&, const ComputedStyle& parentStyle, const Match
edPropertiesVector&); | 46 void set(const ComputedStyle&, const ComputedStyle& parentStyle, const Match
Result&); |
47 void clear(); | 47 void clear(); |
48 DEFINE_INLINE_TRACE() | 48 DEFINE_INLINE_TRACE() |
49 { | 49 { |
50 #if ENABLE(OILPAN) | 50 #if ENABLE(OILPAN) |
51 visitor->trace(matchedProperties); | 51 visitor->trace(matchedProperties); |
52 #endif | 52 #endif |
53 } | 53 } |
54 }; | 54 }; |
55 | 55 |
56 // Specialize the HashTraits for CachedMatchedProperties to check for dead | 56 // Specialize the HashTraits for CachedMatchedProperties to check for dead |
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88 } | 88 } |
89 }; | 89 }; |
90 #endif | 90 #endif |
91 | 91 |
92 class MatchedPropertiesCache { | 92 class MatchedPropertiesCache { |
93 DISALLOW_ALLOCATION(); | 93 DISALLOW_ALLOCATION(); |
94 WTF_MAKE_NONCOPYABLE(MatchedPropertiesCache); | 94 WTF_MAKE_NONCOPYABLE(MatchedPropertiesCache); |
95 public: | 95 public: |
96 MatchedPropertiesCache(); | 96 MatchedPropertiesCache(); |
97 | 97 |
98 const CachedMatchedProperties* find(unsigned hash, const StyleResolverState&
, const MatchedPropertiesVector&); | 98 const CachedMatchedProperties* find(unsigned hash, const StyleResolverState&
, const MatchResult&); |
99 void add(const ComputedStyle&, const ComputedStyle& parentStyle, unsigned ha
sh, const MatchedPropertiesVector&); | 99 void add(const ComputedStyle&, const ComputedStyle& parentStyle, unsigned ha
sh, const MatchResult&); |
100 | 100 |
101 void clear(); | 101 void clear(); |
102 void clearViewportDependent(); | 102 void clearViewportDependent(); |
103 | 103 |
104 static bool isCacheable(const Element*, const ComputedStyle&, const Computed
Style& parentStyle); | 104 static bool isCacheable(const Element*, const ComputedStyle&, const Computed
Style& parentStyle); |
105 | 105 |
106 DECLARE_TRACE(); | 106 DECLARE_TRACE(); |
107 | 107 |
108 private: | 108 private: |
109 #if ENABLE(OILPAN) | 109 #if ENABLE(OILPAN) |
110 typedef HeapHashMap<unsigned, Member<CachedMatchedProperties>, DefaultHash<u
nsigned>::Hash, HashTraits<unsigned>, CachedMatchedPropertiesHashTraits > Cache; | 110 typedef HeapHashMap<unsigned, Member<CachedMatchedProperties>, DefaultHash<u
nsigned>::Hash, HashTraits<unsigned>, CachedMatchedPropertiesHashTraits > Cache; |
111 #else | 111 #else |
112 // Every N additions to the matched declaration cache trigger a sweep where
entries holding | 112 // Every N additions to the matched declaration cache trigger a sweep where
entries holding |
113 // the last reference to a style declaration are garbage collected. | 113 // the last reference to a style declaration are garbage collected. |
114 void sweep(Timer<MatchedPropertiesCache>*); | 114 void sweep(Timer<MatchedPropertiesCache>*); |
115 | 115 |
116 unsigned m_additionsSinceLastSweep; | 116 unsigned m_additionsSinceLastSweep; |
117 | 117 |
118 typedef HashMap<unsigned, OwnPtr<CachedMatchedProperties>> Cache; | 118 typedef HashMap<unsigned, OwnPtr<CachedMatchedProperties>> Cache; |
119 Timer<MatchedPropertiesCache> m_sweepTimer; | 119 Timer<MatchedPropertiesCache> m_sweepTimer; |
120 #endif | 120 #endif |
121 Cache m_cache; | 121 Cache m_cache; |
122 }; | 122 }; |
123 | 123 |
124 } | 124 } |
125 | 125 |
126 #endif | 126 #endif |
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