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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "factory.h" | 5 #include "factory.h" |
6 | 6 |
7 #include "conversions.h" | 7 #include "conversions.h" |
8 #include "isolate-inl.h" | 8 #include "isolate-inl.h" |
9 #include "macro-assembler.h" | 9 #include "macro-assembler.h" |
10 | 10 |
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1769 object->address() + map->instance_size(), size_difference); | 1769 object->address() + map->instance_size(), size_difference); |
1770 } | 1770 } |
1771 } | 1771 } |
1772 | 1772 |
1773 | 1773 |
1774 void Factory::ReinitializeJSGlobalProxy(Handle<JSGlobalProxy> object, | 1774 void Factory::ReinitializeJSGlobalProxy(Handle<JSGlobalProxy> object, |
1775 Handle<JSFunction> constructor) { | 1775 Handle<JSFunction> constructor) { |
1776 ASSERT(constructor->has_initial_map()); | 1776 ASSERT(constructor->has_initial_map()); |
1777 Handle<Map> map(constructor->initial_map(), isolate()); | 1777 Handle<Map> map(constructor->initial_map(), isolate()); |
1778 | 1778 |
| 1779 // The proxy's hash should be retained across reinitialization. |
| 1780 Handle<Object> hash(object->hash(), isolate()); |
| 1781 |
1779 // Check that the already allocated object has the same size and type as | 1782 // Check that the already allocated object has the same size and type as |
1780 // objects allocated using the constructor. | 1783 // objects allocated using the constructor. |
1781 ASSERT(map->instance_size() == object->map()->instance_size()); | 1784 ASSERT(map->instance_size() == object->map()->instance_size()); |
1782 ASSERT(map->instance_type() == object->map()->instance_type()); | 1785 ASSERT(map->instance_type() == object->map()->instance_type()); |
1783 | 1786 |
1784 // Allocate the backing storage for the properties. | 1787 // Allocate the backing storage for the properties. |
1785 int prop_size = map->InitialPropertiesLength(); | 1788 int prop_size = map->InitialPropertiesLength(); |
1786 Handle<FixedArray> properties = NewFixedArray(prop_size, TENURED); | 1789 Handle<FixedArray> properties = NewFixedArray(prop_size, TENURED); |
1787 | 1790 |
1788 // In order to keep heap in consistent state there must be no allocations | 1791 // In order to keep heap in consistent state there must be no allocations |
1789 // before object re-initialization is finished. | 1792 // before object re-initialization is finished. |
1790 DisallowHeapAllocation no_allocation; | 1793 DisallowHeapAllocation no_allocation; |
1791 | 1794 |
1792 // Reset the map for the object. | 1795 // Reset the map for the object. |
1793 object->set_map(constructor->initial_map()); | 1796 object->set_map(constructor->initial_map()); |
1794 | 1797 |
1795 Heap* heap = isolate()->heap(); | 1798 Heap* heap = isolate()->heap(); |
1796 // Reinitialize the object from the constructor map. | 1799 // Reinitialize the object from the constructor map. |
1797 heap->InitializeJSObjectFromMap(*object, *properties, *map); | 1800 heap->InitializeJSObjectFromMap(*object, *properties, *map); |
| 1801 |
| 1802 // Restore the saved hash. |
| 1803 object->set_hash(*hash); |
1798 } | 1804 } |
1799 | 1805 |
1800 | 1806 |
1801 void Factory::BecomeJSObject(Handle<JSReceiver> object) { | 1807 void Factory::BecomeJSObject(Handle<JSReceiver> object) { |
1802 ReinitializeJSReceiver(object, JS_OBJECT_TYPE, JSObject::kHeaderSize); | 1808 ReinitializeJSReceiver(object, JS_OBJECT_TYPE, JSObject::kHeaderSize); |
1803 } | 1809 } |
1804 | 1810 |
1805 | 1811 |
1806 void Factory::BecomeJSFunction(Handle<JSReceiver> object) { | 1812 void Factory::BecomeJSFunction(Handle<JSReceiver> object) { |
1807 ReinitializeJSReceiver(object, JS_FUNCTION_TYPE, JSFunction::kSize); | 1813 ReinitializeJSReceiver(object, JS_FUNCTION_TYPE, JSFunction::kSize); |
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2349 return Handle<Object>::null(); | 2355 return Handle<Object>::null(); |
2350 } | 2356 } |
2351 | 2357 |
2352 | 2358 |
2353 Handle<Object> Factory::ToBoolean(bool value) { | 2359 Handle<Object> Factory::ToBoolean(bool value) { |
2354 return value ? true_value() : false_value(); | 2360 return value ? true_value() : false_value(); |
2355 } | 2361 } |
2356 | 2362 |
2357 | 2363 |
2358 } } // namespace v8::internal | 2364 } } // namespace v8::internal |
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