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| 1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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| 261 return reinterpret_cast<Context*>(result); | 261 return reinterpret_cast<Context*>(result); |
| 262 } | 262 } |
| 263 void set_previous(Context* context) { set(PREVIOUS_INDEX, context); } | 263 void set_previous(Context* context) { set(PREVIOUS_INDEX, context); } |
| 264 | 264 |
| 265 bool has_extension() { return unchecked_extension() != NULL; } | 265 bool has_extension() { return unchecked_extension() != NULL; } |
| 266 JSObject* extension() { return JSObject::cast(unchecked_extension()); } | 266 JSObject* extension() { return JSObject::cast(unchecked_extension()); } |
| 267 void set_extension(JSObject* object) { set(EXTENSION_INDEX, object); } | 267 void set_extension(JSObject* object) { set(EXTENSION_INDEX, object); } |
| 268 | 268 |
| 269 GlobalObject* global() { | 269 GlobalObject* global() { |
| 270 Object* result = get(GLOBAL_INDEX); | 270 Object* result = get(GLOBAL_INDEX); |
| 271 ASSERT(Heap::gc_state() != Heap::NOT_IN_GC || | 271 ASSERT(IsBootstrappingOrGlobalObject(result)); |
| 272 IsBootstrappingOrGlobalObject(result)); | |
| 273 return reinterpret_cast<GlobalObject*>(result); | 272 return reinterpret_cast<GlobalObject*>(result); |
| 274 } | 273 } |
| 275 void set_global(GlobalObject* global) { set(GLOBAL_INDEX, global); } | 274 void set_global(GlobalObject* global) { set(GLOBAL_INDEX, global); } |
| 276 | 275 |
| 277 // Returns a JSGlobalProxy object or null. | 276 // Returns a JSGlobalProxy object or null. |
| 278 JSObject* global_proxy(); | 277 JSObject* global_proxy(); |
| 279 void set_global_proxy(JSObject* global); | 278 void set_global_proxy(JSObject* global); |
| 280 | 279 |
| 281 // The builtins object. | 280 // The builtins object. |
| 282 JSBuiltinsObject* builtins(); | 281 JSBuiltinsObject* builtins(); |
| 283 | 282 |
| 284 // Compute the global context by traversing the context chain. | 283 // Compute the global context by traversing the context chain. |
| 285 Context* global_context(); | 284 Context* global_context(); |
| 286 | 285 |
| 287 // Tells if this is a function context (as opposed to a 'with' context). | 286 // Tells if this is a function context (as opposed to a 'with' context). |
| 288 bool is_function_context() { return unchecked_previous() == NULL; } | 287 bool is_function_context() { return unchecked_previous() == NULL; } |
| 289 | 288 |
| 290 // Tells whether the global context is marked with out of memory. | 289 // Tells whether the global context is marked with out of memory. |
| 291 bool has_out_of_memory() { | 290 inline bool has_out_of_memory(); |
| 292 return global_context()->out_of_memory() == Heap::true_value(); | |
| 293 } | |
| 294 | 291 |
| 295 // Mark the global context with out of memory. | 292 // Mark the global context with out of memory. |
| 296 void mark_out_of_memory() { | 293 inline void mark_out_of_memory(); |
| 297 global_context()->set_out_of_memory(Heap::true_value()); | |
| 298 } | |
| 299 | 294 |
| 300 // The exception holder is the object used as a with object in | 295 // The exception holder is the object used as a with object in |
| 301 // the implementation of a catch block. | 296 // the implementation of a catch block. |
| 302 bool is_exception_holder(Object* object) { | 297 bool is_exception_holder(Object* object) { |
| 303 return IsCatchContext() && extension() == object; | 298 return IsCatchContext() && extension() == object; |
| 304 } | 299 } |
| 305 | 300 |
| 306 // A global context hold a list of all functions which have been optimized. | 301 // A global context hold a list of all functions which have been optimized. |
| 307 void AddOptimizedFunction(JSFunction* function); | 302 void AddOptimizedFunction(JSFunction* function); |
| 308 void RemoveOptimizedFunction(JSFunction* function); | 303 void RemoveOptimizedFunction(JSFunction* function); |
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| 378 #ifdef DEBUG | 373 #ifdef DEBUG |
| 379 // Bootstrapping-aware type checks. | 374 // Bootstrapping-aware type checks. |
| 380 static bool IsBootstrappingOrContext(Object* object); | 375 static bool IsBootstrappingOrContext(Object* object); |
| 381 static bool IsBootstrappingOrGlobalObject(Object* object); | 376 static bool IsBootstrappingOrGlobalObject(Object* object); |
| 382 #endif | 377 #endif |
| 383 }; | 378 }; |
| 384 | 379 |
| 385 } } // namespace v8::internal | 380 } } // namespace v8::internal |
| 386 | 381 |
| 387 #endif // V8_CONTEXTS_H_ | 382 #endif // V8_CONTEXTS_H_ |
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