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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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343 CALL_HEAP_FUNCTION(obj->GetIsolate(), obj->DefineAccessor(*info), Object); | 343 CALL_HEAP_FUNCTION(obj->GetIsolate(), obj->DefineAccessor(*info), Object); |
344 } | 344 } |
345 | 345 |
346 | 346 |
347 // Wrappers for scripts are kept alive and cached in weak global | 347 // Wrappers for scripts are kept alive and cached in weak global |
348 // handles referred from foreign objects held by the scripts as long as | 348 // handles referred from foreign objects held by the scripts as long as |
349 // they are used. When they are not used anymore, the garbage | 349 // they are used. When they are not used anymore, the garbage |
350 // collector will call the weak callback on the global handle | 350 // collector will call the weak callback on the global handle |
351 // associated with the wrapper and get rid of both the wrapper and the | 351 // associated with the wrapper and get rid of both the wrapper and the |
352 // handle. | 352 // handle. |
353 static void ClearWrapperCache(Persistent<v8::Value> handle, void*) { | 353 static void ClearWrapperCache(v8::Isolate* v8_isolate, |
| 354 Persistent<v8::Value> handle, |
| 355 void*) { |
354 Handle<Object> cache = Utils::OpenHandle(*handle); | 356 Handle<Object> cache = Utils::OpenHandle(*handle); |
355 JSValue* wrapper = JSValue::cast(*cache); | 357 JSValue* wrapper = JSValue::cast(*cache); |
356 Foreign* foreign = Script::cast(wrapper->value())->wrapper(); | 358 Foreign* foreign = Script::cast(wrapper->value())->wrapper(); |
357 ASSERT(foreign->foreign_address() == | 359 ASSERT(foreign->foreign_address() == |
358 reinterpret_cast<Address>(cache.location())); | 360 reinterpret_cast<Address>(cache.location())); |
359 foreign->set_foreign_address(0); | 361 foreign->set_foreign_address(0); |
360 Isolate* isolate = Isolate::Current(); | 362 Isolate* isolate = reinterpret_cast<Isolate*>(v8_isolate); |
361 isolate->global_handles()->Destroy(cache.location()); | 363 isolate->global_handles()->Destroy(cache.location()); |
362 isolate->counters()->script_wrappers()->Decrement(); | 364 isolate->counters()->script_wrappers()->Decrement(); |
363 } | 365 } |
364 | 366 |
365 | 367 |
366 Handle<JSValue> GetScriptWrapper(Handle<Script> script) { | 368 Handle<JSValue> GetScriptWrapper(Handle<Script> script) { |
367 if (script->wrapper()->foreign_address() != NULL) { | 369 if (script->wrapper()->foreign_address() != NULL) { |
368 // Return the script wrapper directly from the cache. | 370 // Return the script wrapper directly from the cache. |
369 return Handle<JSValue>( | 371 return Handle<JSValue>( |
370 reinterpret_cast<JSValue**>(script->wrapper()->foreign_address())); | 372 reinterpret_cast<JSValue**>(script->wrapper()->foreign_address())); |
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383 return Handle<JSValue>( | 385 return Handle<JSValue>( |
384 reinterpret_cast<JSValue**>(script->wrapper()->foreign_address())); | 386 reinterpret_cast<JSValue**>(script->wrapper()->foreign_address())); |
385 } | 387 } |
386 | 388 |
387 result->set_value(*script); | 389 result->set_value(*script); |
388 | 390 |
389 // Create a new weak global handle and use it to cache the wrapper | 391 // Create a new weak global handle and use it to cache the wrapper |
390 // for future use. The cache will automatically be cleared by the | 392 // for future use. The cache will automatically be cleared by the |
391 // garbage collector when it is not used anymore. | 393 // garbage collector when it is not used anymore. |
392 Handle<Object> handle = isolate->global_handles()->Create(*result); | 394 Handle<Object> handle = isolate->global_handles()->Create(*result); |
393 isolate->global_handles()->MakeWeak(handle.location(), NULL, | 395 isolate->global_handles()->MakeWeak(handle.location(), |
| 396 NULL, |
| 397 NULL, |
394 &ClearWrapperCache); | 398 &ClearWrapperCache); |
395 script->wrapper()->set_foreign_address( | 399 script->wrapper()->set_foreign_address( |
396 reinterpret_cast<Address>(handle.location())); | 400 reinterpret_cast<Address>(handle.location())); |
397 return result; | 401 return result; |
398 } | 402 } |
399 | 403 |
400 | 404 |
401 // Init line_ends array with code positions of line ends inside script | 405 // Init line_ends array with code positions of line ends inside script |
402 // source. | 406 // source. |
403 void InitScriptLineEnds(Handle<Script> script) { | 407 void InitScriptLineEnds(Handle<Script> script) { |
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928 data->next = prev_next_; | 932 data->next = prev_next_; |
929 data->limit = prev_limit_; | 933 data->limit = prev_limit_; |
930 #ifdef DEBUG | 934 #ifdef DEBUG |
931 handles_detached_ = true; | 935 handles_detached_ = true; |
932 #endif | 936 #endif |
933 return deferred; | 937 return deferred; |
934 } | 938 } |
935 | 939 |
936 | 940 |
937 } } // namespace v8::internal | 941 } } // namespace v8::internal |
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