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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 // 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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154 V(MAP_CACHE_INDEX, Object, map_cache) \ | 154 V(MAP_CACHE_INDEX, Object, map_cache) \ |
155 V(CONTEXT_DATA_INDEX, Object, data) \ | 155 V(CONTEXT_DATA_INDEX, Object, data) \ |
156 V(ALLOW_CODE_GEN_FROM_STRINGS_INDEX, Object, allow_code_gen_from_strings) \ | 156 V(ALLOW_CODE_GEN_FROM_STRINGS_INDEX, Object, allow_code_gen_from_strings) \ |
157 V(ERROR_MESSAGE_FOR_CODE_GEN_FROM_STRINGS_INDEX, Object, \ | 157 V(ERROR_MESSAGE_FOR_CODE_GEN_FROM_STRINGS_INDEX, Object, \ |
158 error_message_for_code_gen_from_strings) \ | 158 error_message_for_code_gen_from_strings) \ |
159 V(TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX, JSFunction, \ | 159 V(TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX, JSFunction, \ |
160 to_complete_property_descriptor) \ | 160 to_complete_property_descriptor) \ |
161 V(DERIVED_HAS_TRAP_INDEX, JSFunction, derived_has_trap) \ | 161 V(DERIVED_HAS_TRAP_INDEX, JSFunction, derived_has_trap) \ |
162 V(DERIVED_GET_TRAP_INDEX, JSFunction, derived_get_trap) \ | 162 V(DERIVED_GET_TRAP_INDEX, JSFunction, derived_get_trap) \ |
163 V(DERIVED_SET_TRAP_INDEX, JSFunction, derived_set_trap) \ | 163 V(DERIVED_SET_TRAP_INDEX, JSFunction, derived_set_trap) \ |
164 V(PROXY_ENUMERATE, JSFunction, proxy_enumerate) \ | 164 V(PROXY_ENUMERATE_INDEX, JSFunction, proxy_enumerate) \ |
| 165 V(OBSERVERS_NOTIFY_CHANGE_INDEX, JSFunction, observers_notify_change) \ |
165 V(RANDOM_SEED_INDEX, ByteArray, random_seed) | 166 V(RANDOM_SEED_INDEX, ByteArray, random_seed) |
166 | 167 |
167 // JSFunctions are pairs (context, function code), sometimes also called | 168 // JSFunctions are pairs (context, function code), sometimes also called |
168 // closures. A Context object is used to represent function contexts and | 169 // closures. A Context object is used to represent function contexts and |
169 // dynamically pushed 'with' contexts (or 'scopes' in ECMA-262 speak). | 170 // dynamically pushed 'with' contexts (or 'scopes' in ECMA-262 speak). |
170 // | 171 // |
171 // At runtime, the contexts build a stack in parallel to the execution | 172 // At runtime, the contexts build a stack in parallel to the execution |
172 // stack, with the top-most context being the current context. All contexts | 173 // stack, with the top-most context being the current context. All contexts |
173 // have the following slots: | 174 // have the following slots: |
174 // | 175 // |
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281 OPAQUE_REFERENCE_FUNCTION_INDEX, | 282 OPAQUE_REFERENCE_FUNCTION_INDEX, |
282 CONTEXT_EXTENSION_FUNCTION_INDEX, | 283 CONTEXT_EXTENSION_FUNCTION_INDEX, |
283 OUT_OF_MEMORY_INDEX, | 284 OUT_OF_MEMORY_INDEX, |
284 CONTEXT_DATA_INDEX, | 285 CONTEXT_DATA_INDEX, |
285 ALLOW_CODE_GEN_FROM_STRINGS_INDEX, | 286 ALLOW_CODE_GEN_FROM_STRINGS_INDEX, |
286 ERROR_MESSAGE_FOR_CODE_GEN_FROM_STRINGS_INDEX, | 287 ERROR_MESSAGE_FOR_CODE_GEN_FROM_STRINGS_INDEX, |
287 TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX, | 288 TO_COMPLETE_PROPERTY_DESCRIPTOR_INDEX, |
288 DERIVED_HAS_TRAP_INDEX, | 289 DERIVED_HAS_TRAP_INDEX, |
289 DERIVED_GET_TRAP_INDEX, | 290 DERIVED_GET_TRAP_INDEX, |
290 DERIVED_SET_TRAP_INDEX, | 291 DERIVED_SET_TRAP_INDEX, |
291 PROXY_ENUMERATE, | 292 PROXY_ENUMERATE_INDEX, |
| 293 OBSERVERS_NOTIFY_CHANGE_INDEX, |
292 RANDOM_SEED_INDEX, | 294 RANDOM_SEED_INDEX, |
293 | 295 |
294 // Properties from here are treated as weak references by the full GC. | 296 // Properties from here are treated as weak references by the full GC. |
295 // Scavenge treats them as strong references. | 297 // Scavenge treats them as strong references. |
296 OPTIMIZED_FUNCTIONS_LIST, // Weak. | 298 OPTIMIZED_FUNCTIONS_LIST, // Weak. |
297 MAP_CACHE_INDEX, // Weak. | 299 MAP_CACHE_INDEX, // Weak. |
298 NEXT_CONTEXT_LINK, // Weak. | 300 NEXT_CONTEXT_LINK, // Weak. |
299 | 301 |
300 // Total number of slots. | 302 // Total number of slots. |
301 NATIVE_CONTEXT_SLOTS, | 303 NATIVE_CONTEXT_SLOTS, |
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444 #ifdef DEBUG | 446 #ifdef DEBUG |
445 // Bootstrapping-aware type checks. | 447 // Bootstrapping-aware type checks. |
446 static bool IsBootstrappingOrValidParentContext(Object* object, Context* kid); | 448 static bool IsBootstrappingOrValidParentContext(Object* object, Context* kid); |
447 static bool IsBootstrappingOrGlobalObject(Object* object); | 449 static bool IsBootstrappingOrGlobalObject(Object* object); |
448 #endif | 450 #endif |
449 }; | 451 }; |
450 | 452 |
451 } } // namespace v8::internal | 453 } } // namespace v8::internal |
452 | 454 |
453 #endif // V8_CONTEXTS_H_ | 455 #endif // V8_CONTEXTS_H_ |
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