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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
29 */ | 29 */ |
30 | 30 |
31 #ifndef Visitor_h | 31 #ifndef Visitor_h |
32 #define Visitor_h | 32 #define Visitor_h |
33 | 33 |
34 #include <wtf/Forward.h> | 34 #include <wtf/Forward.h> |
| 35 #include <wtf/HashSet.h> |
35 | 36 |
36 namespace WebCore { | 37 namespace WebCore { |
37 | 38 |
38 template<typename T> class Member; | 39 template<typename T> class Member; |
39 | 40 |
40 #ifndef NDEBUG | 41 #ifndef NDEBUG |
41 #define DECLARE_GC_TYPE_MARKER \ | 42 #define DECLARE_GC_TYPE_MARKER \ |
42 public: \ | 43 public: \ |
43 static const char* s_gcTypeMarker; \ | 44 static const char* s_gcTypeMarker; \ |
44 private: \ | 45 private: \ |
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111 AcceptTrait<T>::visit(this, t.raw()); | 112 AcceptTrait<T>::visit(this, t.raw()); |
112 } | 113 } |
113 | 114 |
114 template<typename T> | 115 template<typename T> |
115 void visit(const Vector<Member<T> >& vector) | 116 void visit(const Vector<Member<T> >& vector) |
116 { | 117 { |
117 for (typename Vector<Member<T> >::const_iterator it = vector.begin(); it
!= vector.end(); ++it) | 118 for (typename Vector<Member<T> >::const_iterator it = vector.begin(); it
!= vector.end(); ++it) |
118 visit(*it); | 119 visit(*it); |
119 } | 120 } |
120 | 121 |
| 122 template<typename T, size_t N> |
| 123 void visit(const Vector<Member<T>, N>& vector) |
| 124 { |
| 125 for (typename Vector<Member<T> >::const_iterator it = vector.begin(); it
!= vector.end(); ++it) |
| 126 visit(*it); |
| 127 } |
| 128 |
| 129 template<typename T> |
| 130 void visit(const HashSet<Member<T> >& vector) |
| 131 { |
| 132 for (typename HashSet<Member<T> >::const_iterator it = vector.begin(); i
t != vector.end(); ++it) |
| 133 visit(*it); |
| 134 } |
| 135 |
121 // This method adds the object to the set of objects that should have their | 136 // This method adds the object to the set of objects that should have their |
122 // accept method called. Since not all objects have vtables we have to have | 137 // accept method called. Since not all objects have vtables we have to have |
123 // the callback as an explicit argument, but we can use the templated | 138 // the callback as an explicit argument, but we can use the templated |
124 // one-argument visit method above to automatically provide the callback | 139 // one-argument visit method above to automatically provide the callback |
125 // function. | 140 // function. |
126 virtual void visit(const void*, AcceptCallback) = 0; | 141 virtual void visit(const void*, AcceptCallback) = 0; |
127 | 142 |
128 // If the object calls this during the regular accept callback, then the | 143 // If the object calls this during the regular accept callback, then the |
129 // WeakPointerCallback argument may be called later, when the strong roots | 144 // WeakPointerCallback argument may be called later, when the strong roots |
130 // have all been found. The WeakPointerCallback will normally use isAlive | 145 // have all been found. The WeakPointerCallback will normally use isAlive |
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261 public: | 276 public: |
262 virtual void accept(Visitor*) = 0; | 277 virtual void accept(Visitor*) = 0; |
263 virtual ~HeapVisitable() | 278 virtual ~HeapVisitable() |
264 { | 279 { |
265 } | 280 } |
266 }; | 281 }; |
267 | 282 |
268 } | 283 } |
269 | 284 |
270 #endif | 285 #endif |
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