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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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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 MatchRanges ranges; | 43 MatchRanges ranges; |
44 RefPtr<LayoutStyle> layoutStyle; | 44 RefPtr<LayoutStyle> layoutStyle; |
45 RefPtr<LayoutStyle> parentLayoutStyle; | 45 RefPtr<LayoutStyle> parentLayoutStyle; |
46 | 46 |
47 void set(const LayoutStyle&, const LayoutStyle& parentStyle, const MatchResu
lt&); | 47 void set(const LayoutStyle&, const LayoutStyle& parentStyle, const MatchResu
lt&); |
48 void clear(); | 48 void clear(); |
49 void trace(Visitor* visitor) { visitor->trace(matchedProperties); } | 49 DEFINE_INLINE_TRACE() { visitor->trace(matchedProperties); } |
50 }; | 50 }; |
51 | 51 |
52 // Specialize the HashTraits for CachedMatchedProperties to check for dead | 52 // Specialize the HashTraits for CachedMatchedProperties to check for dead |
53 // entries in the MatchedPropertiesCache. | 53 // entries in the MatchedPropertiesCache. |
54 #if ENABLE(OILPAN) | 54 #if ENABLE(OILPAN) |
55 struct CachedMatchedPropertiesHashTraits : HashTraits<Member<CachedMatchedProper
ties> > { | 55 struct CachedMatchedPropertiesHashTraits : HashTraits<Member<CachedMatchedProper
ties> > { |
56 static const WTF::WeakHandlingFlag weakHandlingFlag = WTF::WeakHandlingInCol
lections; | 56 static const WTF::WeakHandlingFlag weakHandlingFlag = WTF::WeakHandlingInCol
lections; |
57 static bool traceInCollection(Visitor*, Member<CachedMatchedProperties>&, WT
F::ShouldWeakPointersBeMarkedStrongly); | 57 static bool traceInCollection(Visitor*, Member<CachedMatchedProperties>&, WT
F::ShouldWeakPointersBeMarkedStrongly); |
58 }; | 58 }; |
59 #endif | 59 #endif |
60 | 60 |
61 class MatchedPropertiesCache { | 61 class MatchedPropertiesCache { |
62 DISALLOW_ALLOCATION(); | 62 DISALLOW_ALLOCATION(); |
63 WTF_MAKE_NONCOPYABLE(MatchedPropertiesCache); | 63 WTF_MAKE_NONCOPYABLE(MatchedPropertiesCache); |
64 public: | 64 public: |
65 MatchedPropertiesCache(); | 65 MatchedPropertiesCache(); |
66 | 66 |
67 const CachedMatchedProperties* find(unsigned hash, const StyleResolverState&
, const MatchResult&); | 67 const CachedMatchedProperties* find(unsigned hash, const StyleResolverState&
, const MatchResult&); |
68 void add(const LayoutStyle&, const LayoutStyle& parentStyle, unsigned hash,
const MatchResult&); | 68 void add(const LayoutStyle&, const LayoutStyle& parentStyle, unsigned hash,
const MatchResult&); |
69 | 69 |
70 void clear(); | 70 void clear(); |
71 void clearViewportDependent(); | 71 void clearViewportDependent(); |
72 | 72 |
73 static bool isCacheable(const Element*, const LayoutStyle&, const LayoutStyl
e& parentStyle); | 73 static bool isCacheable(const Element*, const LayoutStyle&, const LayoutStyl
e& parentStyle); |
74 | 74 |
75 void trace(Visitor*); | 75 DECLARE_TRACE(); |
76 | 76 |
77 private: | 77 private: |
78 #if ENABLE(OILPAN) | 78 #if ENABLE(OILPAN) |
79 typedef HeapHashMap<unsigned, Member<CachedMatchedProperties>, DefaultHash<u
nsigned>::Hash, HashTraits<unsigned>, CachedMatchedPropertiesHashTraits > Cache; | 79 typedef HeapHashMap<unsigned, Member<CachedMatchedProperties>, DefaultHash<u
nsigned>::Hash, HashTraits<unsigned>, CachedMatchedPropertiesHashTraits > Cache; |
80 #else | 80 #else |
81 // Every N additions to the matched declaration cache trigger a sweep where
entries holding | 81 // Every N additions to the matched declaration cache trigger a sweep where
entries holding |
82 // the last reference to a style declaration are garbage collected. | 82 // the last reference to a style declaration are garbage collected. |
83 void sweep(Timer<MatchedPropertiesCache>*); | 83 void sweep(Timer<MatchedPropertiesCache>*); |
84 | 84 |
85 unsigned m_additionsSinceLastSweep; | 85 unsigned m_additionsSinceLastSweep; |
86 | 86 |
87 typedef HashMap<unsigned, OwnPtr<CachedMatchedProperties> > Cache; | 87 typedef HashMap<unsigned, OwnPtr<CachedMatchedProperties> > Cache; |
88 Timer<MatchedPropertiesCache> m_sweepTimer; | 88 Timer<MatchedPropertiesCache> m_sweepTimer; |
89 #endif | 89 #endif |
90 Cache m_cache; | 90 Cache m_cache; |
91 }; | 91 }; |
92 | 92 |
93 } | 93 } |
94 | 94 |
95 #endif | 95 #endif |
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