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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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| 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 DEFINE_INLINE_TRACE() { 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 | 57 |
| 58 template<typename VisitorDispatcher> | 58 template<typename VisitorDispatcher> |
| 59 static bool traceInCollection(VisitorDispatcher visitor, Member<CachedMatche
dProperties>& cachedProperties, WTF::ShouldWeakPointersBeMarkedStrongly strongif
y) | 59 static bool traceInCollection(VisitorDispatcher visitor, Member<CachedMatche
dProperties>& cachedProperties, WTF::ShouldWeakPointersBeMarkedStrongly strongif
y) |
| 60 { | 60 { |
| 61 // Only honor the cache's weakness semantics if the collection is traced | 61 // Only honor the cache's weakness semantics if the collection is traced |
| 62 // with WeakPointersActWeak. Otherwise just trace the cachedProperties | 62 // with WeakPointersActWeak. Otherwise just trace the cachedProperties |
| 63 // strongly, ie. call trace on it. | 63 // strongly, ie. call trace on it. |
| 64 if (cachedProperties && strongify == WTF::WeakPointersActWeak) { | 64 if (cachedProperties && strongify == WTF::WeakPointersActWeak) { |
| 65 // A given cache entry is only kept alive if none of the MatchedProp
erties | 65 // A given cache entry is only kept alive if none of the MatchedProp
erties |
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| 104 private: | 104 private: |
| 105 #if ENABLE(OILPAN) | 105 #if ENABLE(OILPAN) |
| 106 typedef HeapHashMap<unsigned, Member<CachedMatchedProperties>, DefaultHash<u
nsigned>::Hash, HashTraits<unsigned>, CachedMatchedPropertiesHashTraits > Cache; | 106 typedef HeapHashMap<unsigned, Member<CachedMatchedProperties>, DefaultHash<u
nsigned>::Hash, HashTraits<unsigned>, CachedMatchedPropertiesHashTraits > Cache; |
| 107 #else | 107 #else |
| 108 // Every N additions to the matched declaration cache trigger a sweep where
entries holding | 108 // Every N additions to the matched declaration cache trigger a sweep where
entries holding |
| 109 // the last reference to a style declaration are garbage collected. | 109 // the last reference to a style declaration are garbage collected. |
| 110 void sweep(Timer<MatchedPropertiesCache>*); | 110 void sweep(Timer<MatchedPropertiesCache>*); |
| 111 | 111 |
| 112 unsigned m_additionsSinceLastSweep; | 112 unsigned m_additionsSinceLastSweep; |
| 113 | 113 |
| 114 typedef HashMap<unsigned, OwnPtr<CachedMatchedProperties> > Cache; | 114 typedef HashMap<unsigned, OwnPtr<CachedMatchedProperties>> Cache; |
| 115 Timer<MatchedPropertiesCache> m_sweepTimer; | 115 Timer<MatchedPropertiesCache> m_sweepTimer; |
| 116 #endif | 116 #endif |
| 117 Cache m_cache; | 117 Cache m_cache; |
| 118 }; | 118 }; |
| 119 | 119 |
| 120 } | 120 } |
| 121 | 121 |
| 122 #endif | 122 #endif |
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