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Issue 2091733002: Reland [heap] Avoid the use of cells to point from code to new-space objects. (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Address comments. Created 4 years, 6 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 #ifndef V8_HEAP_HEAP_H_ 5 #ifndef V8_HEAP_HEAP_H_
6 #define V8_HEAP_HEAP_H_ 6 #define V8_HEAP_HEAP_H_
7 7
8 #include <cmath> 8 #include <cmath>
9 #include <map> 9 #include <map>
10 10
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187 V(NameDictionary, intrinsic_function_names, IntrinsicFunctionNames) \ 187 V(NameDictionary, intrinsic_function_names, IntrinsicFunctionNames) \
188 V(NameDictionary, empty_properties_dictionary, EmptyPropertiesDictionary) \ 188 V(NameDictionary, empty_properties_dictionary, EmptyPropertiesDictionary) \
189 V(Object, symbol_registry, SymbolRegistry) \ 189 V(Object, symbol_registry, SymbolRegistry) \
190 V(Object, script_list, ScriptList) \ 190 V(Object, script_list, ScriptList) \
191 V(UnseededNumberDictionary, code_stubs, CodeStubs) \ 191 V(UnseededNumberDictionary, code_stubs, CodeStubs) \
192 V(FixedArray, materialized_objects, MaterializedObjects) \ 192 V(FixedArray, materialized_objects, MaterializedObjects) \
193 V(FixedArray, microtask_queue, MicrotaskQueue) \ 193 V(FixedArray, microtask_queue, MicrotaskQueue) \
194 V(FixedArray, detached_contexts, DetachedContexts) \ 194 V(FixedArray, detached_contexts, DetachedContexts) \
195 V(ArrayList, retained_maps, RetainedMaps) \ 195 V(ArrayList, retained_maps, RetainedMaps) \
196 V(WeakHashTable, weak_object_to_code_table, WeakObjectToCodeTable) \ 196 V(WeakHashTable, weak_object_to_code_table, WeakObjectToCodeTable) \
197 /* weak_new_space_object_to_code_list is an array of weak cells, where */ \
198 /* slots with even indices refer to the weak object, and the subsequent */ \
199 /* slots refer to the code with the reference to the weak object. */ \
200 V(ArrayList, weak_new_space_object_to_code_list, \
201 WeakNewSpaceObjectToCodeList) \
197 V(Object, weak_stack_trace_list, WeakStackTraceList) \ 202 V(Object, weak_stack_trace_list, WeakStackTraceList) \
198 V(Object, noscript_shared_function_infos, NoScriptSharedFunctionInfos) \ 203 V(Object, noscript_shared_function_infos, NoScriptSharedFunctionInfos) \
199 V(FixedArray, serialized_templates, SerializedTemplates) \ 204 V(FixedArray, serialized_templates, SerializedTemplates) \
200 /* Configured values */ \ 205 /* Configured values */ \
201 V(JSObject, message_listeners, MessageListeners) \ 206 V(JSObject, message_listeners, MessageListeners) \
202 V(Code, js_entry_code, JsEntryCode) \ 207 V(Code, js_entry_code, JsEntryCode) \
203 V(Code, js_construct_entry_code, JsConstructEntryCode) \ 208 V(Code, js_construct_entry_code, JsConstructEntryCode) \
204 /* Oddball maps */ \ 209 /* Oddball maps */ \
205 V(Map, undefined_map, UndefinedMap) \ 210 V(Map, undefined_map, UndefinedMap) \
206 V(Map, the_hole_map, TheHoleMap) \ 211 V(Map, the_hole_map, TheHoleMap) \
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853 external_memory_ -= external_memory_concurrently_freed_.Value(); 858 external_memory_ -= external_memory_concurrently_freed_.Value();
854 external_memory_concurrently_freed_.SetValue(0); 859 external_memory_concurrently_freed_.SetValue(0);
855 } 860 }
856 861
857 void DeoptMarkedAllocationSites(); 862 void DeoptMarkedAllocationSites();
858 863
859 bool DeoptMaybeTenuredAllocationSites() { 864 bool DeoptMaybeTenuredAllocationSites() {
860 return new_space_.IsAtMaximumCapacity() && maximum_size_scavenges_ == 0; 865 return new_space_.IsAtMaximumCapacity() && maximum_size_scavenges_ == 0;
861 } 866 }
862 867
868 void AddWeakNewSpaceObjectToCodeDependency(Handle<HeapObject> obj,
869 Handle<WeakCell> code);
870
863 void AddWeakObjectToCodeDependency(Handle<HeapObject> obj, 871 void AddWeakObjectToCodeDependency(Handle<HeapObject> obj,
864 Handle<DependentCode> dep); 872 Handle<DependentCode> dep);
865 873
866 DependentCode* LookupWeakObjectToCodeDependency(Handle<HeapObject> obj); 874 DependentCode* LookupWeakObjectToCodeDependency(Handle<HeapObject> obj);
867 875
868 void CompactWeakFixedArrays(); 876 void CompactWeakFixedArrays();
869 877
870 void AddRetainedMap(Handle<Map> map); 878 void AddRetainedMap(Handle<Map> map);
871 879
872 // This event is triggered after successful allocation of a new object made 880 // This event is triggered after successful allocation of a new object made
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1113 void IteratePromotedObjectPointers(HeapObject* object, Address start, 1121 void IteratePromotedObjectPointers(HeapObject* object, Address start,
1114 Address end, bool record_slots, 1122 Address end, bool record_slots,
1115 ObjectSlotCallback callback); 1123 ObjectSlotCallback callback);
1116 1124
1117 // =========================================================================== 1125 // ===========================================================================
1118 // Store buffer API. ========================================================= 1126 // Store buffer API. =========================================================
1119 // =========================================================================== 1127 // ===========================================================================
1120 1128
1121 // Write barrier support for object[offset] = o; 1129 // Write barrier support for object[offset] = o;
1122 inline void RecordWrite(Object* object, int offset, Object* o); 1130 inline void RecordWrite(Object* object, int offset, Object* o);
1131 inline void RecordWriteIntoCode(Code* host, RelocInfo* rinfo, Object* target);
1132 void RecordWriteIntoCodeSlow(Code* host, RelocInfo* rinfo, Object* target);
1123 inline void RecordFixedArrayElements(FixedArray* array, int offset, 1133 inline void RecordFixedArrayElements(FixedArray* array, int offset,
1124 int length); 1134 int length);
1125 1135
1126 Address* store_buffer_top_address() { return store_buffer()->top_address(); } 1136 Address* store_buffer_top_address() { return store_buffer()->top_address(); }
1127 1137
1128 void ClearRecordedSlot(HeapObject* object, Object** slot); 1138 void ClearRecordedSlot(HeapObject* object, Object** slot);
1129 void ClearRecordedSlotRange(Address start, Address end); 1139 void ClearRecordedSlotRange(Address start, Address end);
1130 1140
1131 // =========================================================================== 1141 // ===========================================================================
1132 // Incremental marking API. ================================================== 1142 // Incremental marking API. ==================================================
(...skipping 1554 matching lines...) Expand 10 before | Expand all | Expand 10 after
2687 friend class LargeObjectSpace; 2697 friend class LargeObjectSpace;
2688 friend class NewSpace; 2698 friend class NewSpace;
2689 friend class PagedSpace; 2699 friend class PagedSpace;
2690 DISALLOW_COPY_AND_ASSIGN(AllocationObserver); 2700 DISALLOW_COPY_AND_ASSIGN(AllocationObserver);
2691 }; 2701 };
2692 2702
2693 } // namespace internal 2703 } // namespace internal
2694 } // namespace v8 2704 } // namespace v8
2695 2705
2696 #endif // V8_HEAP_HEAP_H_ 2706 #endif // V8_HEAP_HEAP_H_
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