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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 // 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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| 29 | 29 |
| 30 using namespace v8::internal; | 30 using namespace v8::internal; |
| 31 | 31 |
| 32 | 32 |
| 33 static void SetUpNewSpaceWithPoisonedMementoAtTop() { | 33 static void SetUpNewSpaceWithPoisonedMementoAtTop() { |
| 34 Isolate* isolate = CcTest::i_isolate(); | 34 Isolate* isolate = CcTest::i_isolate(); |
| 35 Heap* heap = isolate->heap(); | 35 Heap* heap = isolate->heap(); |
| 36 NewSpace* new_space = heap->new_space(); | 36 NewSpace* new_space = heap->new_space(); |
| 37 | 37 |
| 38 // Make sure we can allocate some objects without causing a GC later. | 38 // Make sure we can allocate some objects without causing a GC later. |
| 39 heap->CollectAllGarbage(Heap::kAbortIncrementalMarkingMask); | 39 heap->CollectAllGarbage(); |
| 40 | 40 |
| 41 // Allocate a string, the GC may suspect a memento behind the string. | 41 // Allocate a string, the GC may suspect a memento behind the string. |
| 42 Handle<SeqOneByteString> string = | 42 Handle<SeqOneByteString> string = |
| 43 isolate->factory()->NewRawOneByteString(12).ToHandleChecked(); | 43 isolate->factory()->NewRawOneByteString(12).ToHandleChecked(); |
| 44 CHECK(*string); | 44 CHECK(*string); |
| 45 | 45 |
| 46 // Create an allocation memento behind the string with a garbage allocation | 46 // Create an allocation memento behind the string with a garbage allocation |
| 47 // site pointer. | 47 // site pointer. |
| 48 AllocationMemento* memento = | 48 AllocationMemento* memento = |
| 49 reinterpret_cast<AllocationMemento*>(new_space->top() + kHeapObjectTag); | 49 reinterpret_cast<AllocationMemento*>(new_space->top() + kHeapObjectTag); |
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| 112 AllocationMemento* memento = | 112 AllocationMemento* memento = |
| 113 reinterpret_cast<AllocationMemento*>(memento_address + kHeapObjectTag); | 113 reinterpret_cast<AllocationMemento*>(memento_address + kHeapObjectTag); |
| 114 CHECK_EQ(memento->map(), heap->allocation_memento_map()); | 114 CHECK_EQ(memento->map(), heap->allocation_memento_map()); |
| 115 | 115 |
| 116 // Furthermore, how many mementos did we create? The count should match | 116 // Furthermore, how many mementos did we create? The count should match |
| 117 // call_count. Note, that mementos are allocated during the inobject slack | 117 // call_count. Note, that mementos are allocated during the inobject slack |
| 118 // tracking phase. | 118 // tracking phase. |
| 119 AllocationSite* site = memento->GetAllocationSite(); | 119 AllocationSite* site = memento->GetAllocationSite(); |
| 120 CHECK_EQ(call_count, site->pretenure_create_count()->value()); | 120 CHECK_EQ(call_count, site->pretenure_create_count()->value()); |
| 121 } | 121 } |
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