Revision: 22598
Author: [email protected]
Date: Thu Jul 24 12:30:53 2014 UTC
Log: Revert r22597 (which should have been called: "Tests that the GC
doesn't mistake non-pointer constant pool entries as poitners.")
[email protected]
Review URL: https://codereview.chromium.org/413173002
http://code.google.com/p/v8/source/detail?r=22598
Modified:
/branches/bleeding_edge/src/objects-inl.h
/branches/bleeding_edge/test/cctest/test-constantpool.cc
=======================================
--- /branches/bleeding_edge/src/objects-inl.h Thu Jul 24 12:12:44 2014 UTC
+++ /branches/bleeding_edge/src/objects-inl.h Thu Jul 24 12:30:53 2014 UTC
@@ -2539,7 +2539,6 @@
void ConstantPoolArray::set(int index, Object* value) {
ASSERT(map() == GetHeap()->constant_pool_array_map());
- ASSERT(!GetHeap()->InNewSpace(value));
ASSERT(get_type(index) == HEAP_PTR);
WRITE_FIELD(this, OffsetOfElementAt(index), value);
WRITE_BARRIER(GetHeap(), this, OffsetOfElementAt(index), value);
@@ -2584,7 +2583,6 @@
void ConstantPoolArray::set_at_offset(int offset, Object* value) {
ASSERT(map() == GetHeap()->constant_pool_array_map());
- ASSERT(!GetHeap()->InNewSpace(value));
ASSERT(offset_is_type(offset, HEAP_PTR));
WRITE_FIELD(this, offset, value);
WRITE_BARRIER(GetHeap(), this, offset, value);
=======================================
--- /branches/bleeding_edge/test/cctest/test-constantpool.cc Thu Jul 24
12:12:44 2014 UTC
+++ /branches/bleeding_edge/test/cctest/test-constantpool.cc Thu Jul 24
12:30:53 2014 UTC
@@ -242,39 +242,3 @@
int expected_int32_indexs[] = { 1, 2, 3, 4 };
CheckIterator(array, ConstantPoolArray::INT32, expected_int32_indexs, 4);
}
-
-
-TEST(ConstantPoolPreciseGC) {
- LocalContext context;
- Isolate* isolate = CcTest::i_isolate();
- Heap* heap = isolate->heap();
- Factory* factory = isolate->factory();
- v8::HandleScope scope(context->GetIsolate());
-
- ConstantPoolArray::NumberOfEntries small(1, 0, 0, 1);
- Handle<ConstantPoolArray> array = factory->NewConstantPoolArray(small);
-
- // Check that the store buffer knows which entries are pointers and
which are
- // not. To do this, make non-pointer entries which look like new space
- // pointers but are actually invalid and ensure the GC doesn't try to
move
- // them.
- Handle<HeapObject> object = factory->NewHeapNumber(4.0);
- Object* raw_ptr = *object;
- // If interpreted as a pointer, this should be right inside the heap
number
- // which will cause a crash when trying to lookup the 'map' pointer.
- int32_t invalid_ptr_int32 = reinterpret_cast<int32_t>(raw_ptr) +
kInt32Size;
- int64_t invalid_ptr_int64 = reinterpret_cast<int64_t>(raw_ptr) +
kInt32Size;
- array->set(0, invalid_ptr_int64);
- array->set(1, invalid_ptr_int32);
-
- // Ensure we perform a scan on scavenge for the constant pool's page.
- MemoryChunk::FromAddress(array->address())->set_scan_on_scavenge(true);
- heap->CollectGarbage(NEW_SPACE);
-
- // Check the object was moved by GC.
- CHECK_NE(*object, raw_ptr);
-
- // Check the non-pointer entries weren't changed.
- CHECK_EQ(invalid_ptr_int64, array->get_int64_entry(0));
- CHECK_EQ(invalid_ptr_int32, array->get_int32_entry(1));
-}
--
--
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