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Issue 8551006: Version 3.7.9. (Closed) Base URL: http://v8.googlecode.com/svn/trunk/
Patch Set: Created 9 years, 1 month ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Redistribution and use in source and binary forms, with or without 2 // Redistribution and use in source and binary forms, with or without
3 // modification, are permitted provided that the following conditions are 3 // modification, are permitted provided that the following conditions are
4 // met: 4 // met:
5 // 5 //
6 // * Redistributions of source code must retain the above copyright 6 // * Redistributions of source code must retain the above copyright
7 // notice, this list of conditions and the following disclaimer. 7 // notice, this list of conditions and the following disclaimer.
8 // * Redistributions in binary form must reproduce the above 8 // * Redistributions in binary form must reproduce the above
9 // copyright notice, this list of conditions and the following 9 // copyright notice, this list of conditions and the following
10 // disclaimer in the documentation and/or other materials provided 10 // disclaimer in the documentation and/or other materials provided
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39 class Allocator BASE_EMBEDDED { 39 class Allocator BASE_EMBEDDED {
40 public: 40 public:
41 virtual ~Allocator() {} 41 virtual ~Allocator() {}
42 virtual void* New(size_t size) { return Malloced::New(size); } 42 virtual void* New(size_t size) { return Malloced::New(size); }
43 virtual void Delete(void* p) { Malloced::Delete(p); } 43 virtual void Delete(void* p) { Malloced::Delete(p); }
44 }; 44 };
45 45
46 46
47 class HashMap { 47 class HashMap {
48 public: 48 public:
49 static Allocator DefaultAllocator; 49 static Allocator* DefaultAllocator;
50 50
51 typedef bool (*MatchFun) (void* key1, void* key2); 51 typedef bool (*MatchFun) (void* key1, void* key2);
52 52
53 // initial_capacity is the size of the initial hash map; 53 // initial_capacity is the size of the initial hash map;
54 // it must be a power of 2 (and thus must not be 0). 54 // it must be a power of 2 (and thus must not be 0).
55 explicit HashMap(MatchFun match, 55 explicit HashMap(MatchFun match,
56 Allocator* allocator = &DefaultAllocator, 56 Allocator* allocator = DefaultAllocator,
57 uint32_t initial_capacity = 8); 57 uint32_t initial_capacity = 8);
58 58
59 ~HashMap(); 59 ~HashMap();
60 60
61 // HashMap entries are (key, value, hash) triplets. 61 // HashMap entries are (key, value, hash) triplets.
62 // Some clients may not need to use the value slot 62 // Some clients may not need to use the value slot
63 // (e.g. implementers of sets, where the key is the value). 63 // (e.g. implementers of sets, where the key is the value).
64 struct Entry { 64 struct Entry {
65 void* key; 65 void* key;
66 void* value; 66 void* value;
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109 Entry* map_end() const { return map_ + capacity_; } 109 Entry* map_end() const { return map_ + capacity_; }
110 Entry* Probe(void* key, uint32_t hash); 110 Entry* Probe(void* key, uint32_t hash);
111 void Initialize(uint32_t capacity); 111 void Initialize(uint32_t capacity);
112 void Resize(); 112 void Resize();
113 }; 113 };
114 114
115 115
116 } } // namespace v8::internal 116 } } // namespace v8::internal
117 117
118 #endif // V8_HASHMAP_H_ 118 #endif // V8_HASHMAP_H_
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