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Issue 7535004: Merge bleeding edge up to 8774 into the GC branch. (Closed) Base URL: http://v8.googlecode.com/svn/branches/experimental/gc/
Patch Set: Created 9 years, 4 months 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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67 67
68 // Delete all objects and free all memory allocated in the Zone. 68 // Delete all objects and free all memory allocated in the Zone.
69 void DeleteAll(); 69 void DeleteAll();
70 70
71 // Returns true if more memory has been allocated in zones than 71 // Returns true if more memory has been allocated in zones than
72 // the limit allows. 72 // the limit allows.
73 inline bool excess_allocation(); 73 inline bool excess_allocation();
74 74
75 inline void adjust_segment_bytes_allocated(int delta); 75 inline void adjust_segment_bytes_allocated(int delta);
76 76
77 inline Isolate* isolate() { return isolate_; }
78
77 static unsigned allocation_size_; 79 static unsigned allocation_size_;
78 80
79 private: 81 private:
80 friend class Isolate; 82 friend class Isolate;
81 friend class ZoneScope; 83 friend class ZoneScope;
82 84
83 // All pointers returned from New() have this alignment. 85 // All pointers returned from New() have this alignment.
84 static const int kAlignment = kPointerSize; 86 static const int kAlignment = kPointerSize;
85 87
86 // Never allocate segments smaller than this size in bytes. 88 // Never allocate segments smaller than this size in bytes.
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157 bool prev_; 159 bool prev_;
158 }; 160 };
159 161
160 162
161 // The ZoneListAllocationPolicy is used to specialize the GenericList 163 // The ZoneListAllocationPolicy is used to specialize the GenericList
162 // implementation to allocate ZoneLists and their elements in the 164 // implementation to allocate ZoneLists and their elements in the
163 // Zone. 165 // Zone.
164 class ZoneListAllocationPolicy { 166 class ZoneListAllocationPolicy {
165 public: 167 public:
166 // Allocate 'size' bytes of memory in the zone. 168 // Allocate 'size' bytes of memory in the zone.
167 INLINE(static void* New(int size)); 169 static void* New(int size);
168 170
169 // De-allocation attempts are silently ignored. 171 // De-allocation attempts are silently ignored.
170 static void Delete(void* p) { } 172 static void Delete(void* p) { }
171 }; 173 };
172 174
173 175
174 // ZoneLists are growable lists with constant-time access to the 176 // ZoneLists are growable lists with constant-time access to the
175 // elements. The list itself and all its elements are allocated in the 177 // elements. The list itself and all its elements are allocated in the
176 // Zone. ZoneLists cannot be deleted individually; you can delete all 178 // Zone. ZoneLists cannot be deleted individually; you can delete all
177 // objects in the Zone by calling Zone::DeleteAll(). 179 // objects in the Zone by calling Zone::DeleteAll().
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231 public: 233 public:
232 ZoneSplayTree() 234 ZoneSplayTree()
233 : SplayTree<Config, ZoneListAllocationPolicy>() {} 235 : SplayTree<Config, ZoneListAllocationPolicy>() {}
234 ~ZoneSplayTree(); 236 ~ZoneSplayTree();
235 }; 237 };
236 238
237 239
238 } } // namespace v8::internal 240 } } // namespace v8::internal
239 241
240 #endif // V8_ZONE_H_ 242 #endif // V8_ZONE_H_
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