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Side by Side Diff: src/hashmap.h

Issue 6685088: Merge isolates to bleeding_edge. (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/
Patch Set: '' Created 9 years, 9 months ago
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1 // Copyright 2008 the V8 project authors. All rights reserved. 1 // Copyright 2008 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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48 48
49 typedef bool (*MatchFun) (void* key1, void* key2); 49 typedef bool (*MatchFun) (void* key1, void* key2);
50 50
51 // Dummy constructor. This constructor doesn't set up the hash 51 // Dummy constructor. This constructor doesn't set up the hash
52 // map properly so don't use it unless you have good reason (e.g., 52 // map properly so don't use it unless you have good reason (e.g.,
53 // you know that the HashMap will never be used). 53 // you know that the HashMap will never be used).
54 HashMap(); 54 HashMap();
55 55
56 // initial_capacity is the size of the initial hash map; 56 // initial_capacity is the size of the initial hash map;
57 // it must be a power of 2 (and thus must not be 0). 57 // it must be a power of 2 (and thus must not be 0).
58 HashMap(MatchFun match, 58 explicit HashMap(MatchFun match,
59 Allocator* allocator = &DefaultAllocator, 59 Allocator* allocator = &DefaultAllocator,
60 uint32_t initial_capacity = 8); 60 uint32_t initial_capacity = 8);
61 61
62 ~HashMap(); 62 ~HashMap();
63 63
64 // HashMap entries are (key, value, hash) triplets. 64 // HashMap entries are (key, value, hash) triplets.
65 // Some clients may not need to use the value slot 65 // Some clients may not need to use the value slot
66 // (e.g. implementers of sets, where the key is the value). 66 // (e.g. implementers of sets, where the key is the value).
67 struct Entry { 67 struct Entry {
68 void* key; 68 void* key;
69 void* value; 69 void* value;
70 uint32_t hash; // the full hash value for key 70 uint32_t hash; // the full hash value for key
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112 Entry* map_end() const { return map_ + capacity_; } 112 Entry* map_end() const { return map_ + capacity_; }
113 Entry* Probe(void* key, uint32_t hash); 113 Entry* Probe(void* key, uint32_t hash);
114 void Initialize(uint32_t capacity); 114 void Initialize(uint32_t capacity);
115 void Resize(); 115 void Resize();
116 }; 116 };
117 117
118 118
119 } } // namespace v8::internal 119 } } // namespace v8::internal
120 120
121 #endif // V8_HASHMAP_H_ 121 #endif // V8_HASHMAP_H_
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