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Issue 8162014: Moved random generator state to global context. (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 9 years, 2 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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131 V(OPAQUE_REFERENCE_FUNCTION_INDEX, JSFunction, opaque_reference_function) \ 131 V(OPAQUE_REFERENCE_FUNCTION_INDEX, JSFunction, opaque_reference_function) \
132 V(CONTEXT_EXTENSION_FUNCTION_INDEX, JSFunction, context_extension_function) \ 132 V(CONTEXT_EXTENSION_FUNCTION_INDEX, JSFunction, context_extension_function) \
133 V(OUT_OF_MEMORY_INDEX, Object, out_of_memory) \ 133 V(OUT_OF_MEMORY_INDEX, Object, out_of_memory) \
134 V(MAP_CACHE_INDEX, Object, map_cache) \ 134 V(MAP_CACHE_INDEX, Object, map_cache) \
135 V(CONTEXT_DATA_INDEX, Object, data) \ 135 V(CONTEXT_DATA_INDEX, Object, data) \
136 V(ALLOW_CODE_GEN_FROM_STRINGS_INDEX, Object, allow_code_gen_from_strings) \ 136 V(ALLOW_CODE_GEN_FROM_STRINGS_INDEX, Object, allow_code_gen_from_strings) \
137 V(TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX, JSFunction, \ 137 V(TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX, JSFunction, \
138 to_complete_property_descriptor) \ 138 to_complete_property_descriptor) \
139 V(DERIVED_HAS_TRAP_INDEX, JSFunction, derived_has_trap) \ 139 V(DERIVED_HAS_TRAP_INDEX, JSFunction, derived_has_trap) \
140 V(DERIVED_GET_TRAP_INDEX, JSFunction, derived_get_trap) \ 140 V(DERIVED_GET_TRAP_INDEX, JSFunction, derived_get_trap) \
141 V(DERIVED_SET_TRAP_INDEX, JSFunction, derived_set_trap) 141 V(DERIVED_SET_TRAP_INDEX, JSFunction, derived_set_trap) \
142 V(RANDOM_SEED_INDEX, ByteArray, random_seed)
142 143
143 // JSFunctions are pairs (context, function code), sometimes also called 144 // JSFunctions are pairs (context, function code), sometimes also called
144 // closures. A Context object is used to represent function contexts and 145 // closures. A Context object is used to represent function contexts and
145 // dynamically pushed 'with' contexts (or 'scopes' in ECMA-262 speak). 146 // dynamically pushed 'with' contexts (or 'scopes' in ECMA-262 speak).
146 // 147 //
147 // At runtime, the contexts build a stack in parallel to the execution 148 // At runtime, the contexts build a stack in parallel to the execution
148 // stack, with the top-most context being the current context. All contexts 149 // stack, with the top-most context being the current context. All contexts
149 // have the following slots: 150 // have the following slots:
150 // 151 //
151 // [ closure ] This is the current function. It is the same for all 152 // [ closure ] This is the current function. It is the same for all
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251 SCRIPT_FUNCTION_INDEX, 252 SCRIPT_FUNCTION_INDEX,
252 OPAQUE_REFERENCE_FUNCTION_INDEX, 253 OPAQUE_REFERENCE_FUNCTION_INDEX,
253 CONTEXT_EXTENSION_FUNCTION_INDEX, 254 CONTEXT_EXTENSION_FUNCTION_INDEX,
254 OUT_OF_MEMORY_INDEX, 255 OUT_OF_MEMORY_INDEX,
255 CONTEXT_DATA_INDEX, 256 CONTEXT_DATA_INDEX,
256 ALLOW_CODE_GEN_FROM_STRINGS_INDEX, 257 ALLOW_CODE_GEN_FROM_STRINGS_INDEX,
257 TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX, 258 TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX,
258 DERIVED_HAS_TRAP_INDEX, 259 DERIVED_HAS_TRAP_INDEX,
259 DERIVED_GET_TRAP_INDEX, 260 DERIVED_GET_TRAP_INDEX,
260 DERIVED_SET_TRAP_INDEX, 261 DERIVED_SET_TRAP_INDEX,
262 RANDOM_SEED_INDEX,
261 263
262 // Properties from here are treated as weak references by the full GC. 264 // Properties from here are treated as weak references by the full GC.
263 // Scavenge treats them as strong references. 265 // Scavenge treats them as strong references.
264 OPTIMIZED_FUNCTIONS_LIST, // Weak. 266 OPTIMIZED_FUNCTIONS_LIST, // Weak.
265 MAP_CACHE_INDEX, // Weak. 267 MAP_CACHE_INDEX, // Weak.
266 NEXT_CONTEXT_LINK, // Weak. 268 NEXT_CONTEXT_LINK, // Weak.
267 269
268 // Total number of slots. 270 // Total number of slots.
269 GLOBAL_CONTEXT_SLOTS, 271 GLOBAL_CONTEXT_SLOTS,
270 272
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411 #ifdef DEBUG 413 #ifdef DEBUG
412 // Bootstrapping-aware type checks. 414 // Bootstrapping-aware type checks.
413 static bool IsBootstrappingOrContext(Object* object); 415 static bool IsBootstrappingOrContext(Object* object);
414 static bool IsBootstrappingOrGlobalObject(Object* object); 416 static bool IsBootstrappingOrGlobalObject(Object* object);
415 #endif 417 #endif
416 }; 418 };
417 419
418 } } // namespace v8::internal 420 } } // namespace v8::internal
419 421
420 #endif // V8_CONTEXTS_H_ 422 #endif // V8_CONTEXTS_H_
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