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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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| 1604 | 1604 |
| 1605 | 1605 |
| 1606 RUNTIME_FUNCTION(MaybeObject*, Runtime_GetPrototype) { | 1606 RUNTIME_FUNCTION(MaybeObject*, Runtime_GetPrototype) { |
| 1607 HandleScope scope(isolate); | 1607 HandleScope scope(isolate); |
| 1608 ASSERT(args.length() == 1); | 1608 ASSERT(args.length() == 1); |
| 1609 CONVERT_ARG_HANDLE_CHECKED(Object, obj, 0); | 1609 CONVERT_ARG_HANDLE_CHECKED(Object, obj, 0); |
| 1610 // We don't expect access checks to be needed on JSProxy objects. | 1610 // We don't expect access checks to be needed on JSProxy objects. |
| 1611 ASSERT(!obj->IsAccessCheckNeeded() || obj->IsJSObject()); | 1611 ASSERT(!obj->IsAccessCheckNeeded() || obj->IsJSObject()); |
| 1612 do { | 1612 do { |
| 1613 if (obj->IsAccessCheckNeeded() && | 1613 if (obj->IsAccessCheckNeeded() && |
| 1614 !isolate->MayNamedAccessWrapper(Handle<JSObject>::cast(obj), | 1614 !isolate->MayNamedAccess(JSObject::cast(*obj), |
| 1615 isolate->factory()->proto_string(), | 1615 *isolate->factory()->proto_string(), |
| 1616 v8::ACCESS_GET)) { | 1616 v8::ACCESS_GET)) { |
| 1617 isolate->ReportFailedAccessCheck(JSObject::cast(*obj), v8::ACCESS_GET); | 1617 isolate->ReportFailedAccessCheck(JSObject::cast(*obj), v8::ACCESS_GET); |
| 1618 RETURN_IF_SCHEDULED_EXCEPTION(isolate); | 1618 RETURN_IF_SCHEDULED_EXCEPTION(isolate); |
| 1619 return isolate->heap()->undefined_value(); | 1619 return isolate->heap()->undefined_value(); |
| 1620 } | 1620 } |
| 1621 obj = handle(obj->GetPrototype(isolate), isolate); | 1621 obj = handle(obj->GetPrototype(isolate), isolate); |
| 1622 } while (obj->IsJSObject() && | 1622 } while (obj->IsJSObject() && |
| 1623 JSObject::cast(*obj)->map()->is_hidden_prototype()); | 1623 JSObject::cast(*obj)->map()->is_hidden_prototype()); |
| 1624 return *obj; | 1624 return *obj; |
| 1625 } | 1625 } |
| 1626 | 1626 |
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| 14864 // Handle last resort GC and make sure to allow future allocations | 14864 // Handle last resort GC and make sure to allow future allocations |
| 14865 // to grow the heap without causing GCs (if possible). | 14865 // to grow the heap without causing GCs (if possible). |
| 14866 isolate->counters()->gc_last_resort_from_js()->Increment(); | 14866 isolate->counters()->gc_last_resort_from_js()->Increment(); |
| 14867 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, | 14867 isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags, |
| 14868 "Runtime::PerformGC"); | 14868 "Runtime::PerformGC"); |
| 14869 } | 14869 } |
| 14870 } | 14870 } |
| 14871 | 14871 |
| 14872 | 14872 |
| 14873 } } // namespace v8::internal | 14873 } } // namespace v8::internal |
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