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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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103 V(CALL_AS_FUNCTION_DELEGATE_INDEX, JSFunction, call_as_function_delegate) \ | 103 V(CALL_AS_FUNCTION_DELEGATE_INDEX, JSFunction, call_as_function_delegate) \ |
104 V(CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, JSFunction, \ | 104 V(CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, JSFunction, \ |
105 call_as_constructor_delegate) \ | 105 call_as_constructor_delegate) \ |
106 V(SCRIPT_FUNCTION_INDEX, JSFunction, script_function) \ | 106 V(SCRIPT_FUNCTION_INDEX, JSFunction, script_function) \ |
107 V(OPAQUE_REFERENCE_FUNCTION_INDEX, JSFunction, opaque_reference_function) \ | 107 V(OPAQUE_REFERENCE_FUNCTION_INDEX, JSFunction, opaque_reference_function) \ |
108 V(CONTEXT_EXTENSION_FUNCTION_INDEX, JSFunction, context_extension_function) \ | 108 V(CONTEXT_EXTENSION_FUNCTION_INDEX, JSFunction, context_extension_function) \ |
109 V(OUT_OF_MEMORY_INDEX, Object, out_of_memory) \ | 109 V(OUT_OF_MEMORY_INDEX, Object, out_of_memory) \ |
110 V(MAP_CACHE_INDEX, Object, map_cache) \ | 110 V(MAP_CACHE_INDEX, Object, map_cache) \ |
111 V(CONTEXT_DATA_INDEX, Object, data) \ | 111 V(CONTEXT_DATA_INDEX, Object, data) \ |
112 V(ALLOW_CODE_GEN_FROM_STRINGS_INDEX, Object, allow_code_gen_from_strings) \ | 112 V(ALLOW_CODE_GEN_FROM_STRINGS_INDEX, Object, allow_code_gen_from_strings) \ |
| 113 V(DERIVED_HAS_TRAP_INDEX, JSFunction, derived_has_trap) \ |
113 V(DERIVED_GET_TRAP_INDEX, JSFunction, derived_get_trap) \ | 114 V(DERIVED_GET_TRAP_INDEX, JSFunction, derived_get_trap) \ |
114 V(DERIVED_SET_TRAP_INDEX, JSFunction, derived_set_trap) | 115 V(DERIVED_SET_TRAP_INDEX, JSFunction, derived_set_trap) |
115 | 116 |
116 // JSFunctions are pairs (context, function code), sometimes also called | 117 // JSFunctions are pairs (context, function code), sometimes also called |
117 // closures. A Context object is used to represent function contexts and | 118 // closures. A Context object is used to represent function contexts and |
118 // dynamically pushed 'with' contexts (or 'scopes' in ECMA-262 speak). | 119 // dynamically pushed 'with' contexts (or 'scopes' in ECMA-262 speak). |
119 // | 120 // |
120 // At runtime, the contexts build a stack in parallel to the execution | 121 // At runtime, the contexts build a stack in parallel to the execution |
121 // stack, with the top-most context being the current context. All contexts | 122 // stack, with the top-most context being the current context. All contexts |
122 // have the following slots: | 123 // have the following slots: |
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220 NORMALIZED_MAP_CACHE_INDEX, | 221 NORMALIZED_MAP_CACHE_INDEX, |
221 RUNTIME_CONTEXT_INDEX, | 222 RUNTIME_CONTEXT_INDEX, |
222 CALL_AS_FUNCTION_DELEGATE_INDEX, | 223 CALL_AS_FUNCTION_DELEGATE_INDEX, |
223 CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, | 224 CALL_AS_CONSTRUCTOR_DELEGATE_INDEX, |
224 SCRIPT_FUNCTION_INDEX, | 225 SCRIPT_FUNCTION_INDEX, |
225 OPAQUE_REFERENCE_FUNCTION_INDEX, | 226 OPAQUE_REFERENCE_FUNCTION_INDEX, |
226 CONTEXT_EXTENSION_FUNCTION_INDEX, | 227 CONTEXT_EXTENSION_FUNCTION_INDEX, |
227 OUT_OF_MEMORY_INDEX, | 228 OUT_OF_MEMORY_INDEX, |
228 CONTEXT_DATA_INDEX, | 229 CONTEXT_DATA_INDEX, |
229 ALLOW_CODE_GEN_FROM_STRINGS_INDEX, | 230 ALLOW_CODE_GEN_FROM_STRINGS_INDEX, |
| 231 DERIVED_HAS_TRAP_INDEX, |
230 DERIVED_GET_TRAP_INDEX, | 232 DERIVED_GET_TRAP_INDEX, |
231 DERIVED_SET_TRAP_INDEX, | 233 DERIVED_SET_TRAP_INDEX, |
232 | 234 |
233 // Properties from here are treated as weak references by the full GC. | 235 // Properties from here are treated as weak references by the full GC. |
234 // Scavenge treats them as strong references. | 236 // Scavenge treats them as strong references. |
235 OPTIMIZED_FUNCTIONS_LIST, // Weak. | 237 OPTIMIZED_FUNCTIONS_LIST, // Weak. |
236 MAP_CACHE_INDEX, // Weak. | 238 MAP_CACHE_INDEX, // Weak. |
237 NEXT_CONTEXT_LINK, // Weak. | 239 NEXT_CONTEXT_LINK, // Weak. |
238 | 240 |
239 // Total number of slots. | 241 // Total number of slots. |
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385 #ifdef DEBUG | 387 #ifdef DEBUG |
386 // Bootstrapping-aware type checks. | 388 // Bootstrapping-aware type checks. |
387 static bool IsBootstrappingOrContext(Object* object); | 389 static bool IsBootstrappingOrContext(Object* object); |
388 static bool IsBootstrappingOrGlobalObject(Object* object); | 390 static bool IsBootstrappingOrGlobalObject(Object* object); |
389 #endif | 391 #endif |
390 }; | 392 }; |
391 | 393 |
392 } } // namespace v8::internal | 394 } } // namespace v8::internal |
393 | 395 |
394 #endif // V8_CONTEXTS_H_ | 396 #endif // V8_CONTEXTS_H_ |
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