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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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