[heap] Move slots buffer into a separate file.

test/cctest/test-heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 6435 matching lines @@
   size_t throughput = tracer->AllocationThroughputInBytesPerMillisecond(100);
   CHECK_EQ(2 * (counter2 - counter1) / (time2 - time1), throughput);
   int time3 = 1000;
   size_t counter3 = 30000;
   tracer->SampleAllocation(time3, counter3, counter3);
   throughput = tracer->AllocationThroughputInBytesPerMillisecond(100);
   CHECK_EQ(2 * (counter3 - counter1) / (time3 - time1), throughput);
 }
 
 
-TEST(SlotsBufferObjectSlotsRemoval) {
-  CcTest::InitializeVM();
-  v8::HandleScope scope(CcTest::isolate());
-  Isolate* isolate = CcTest::i_isolate();
-  Heap* heap = isolate->heap();
-  Factory* factory = isolate->factory();
-
-  SlotsBuffer* buffer = new SlotsBuffer(NULL);
-  void* fake_object[1];
-
-  Handle<FixedArray> array = factory->NewFixedArray(2, TENURED);
-  CHECK(heap->old_space()->Contains(*array));
-  array->set(0, reinterpret_cast<Object*>(fake_object), SKIP_WRITE_BARRIER);
-
-  // Firstly, let's test the regular slots buffer entry.
-  buffer->Add(HeapObject::RawField(*array, FixedArray::kHeaderSize));
-  CHECK(reinterpret_cast<void*>(buffer->Get(0)) ==
-        HeapObject::RawField(*array, FixedArray::kHeaderSize));
-  SlotsBuffer::RemoveObjectSlots(CcTest::i_isolate()->heap(), buffer,
-                                 array->address(),
-                                 array->address() + array->Size());
-  CHECK(reinterpret_cast<void*>(buffer->Get(0)) ==
-        HeapObject::RawField(heap->empty_fixed_array(),
-                             FixedArrayBase::kLengthOffset));
-
-  // Secondly, let's test the typed slots buffer entry.
-  SlotsBuffer::AddTo(NULL, &buffer, SlotsBuffer::EMBEDDED_OBJECT_SLOT,
-                     array->address() + FixedArray::kHeaderSize,
-                     SlotsBuffer::FAIL_ON_OVERFLOW);
-  CHECK(reinterpret_cast<void*>(buffer->Get(1)) ==
-        reinterpret_cast<Object**>(SlotsBuffer::EMBEDDED_OBJECT_SLOT));
-  CHECK(reinterpret_cast<void*>(buffer->Get(2)) ==
-        HeapObject::RawField(*array, FixedArray::kHeaderSize));
-  SlotsBuffer::RemoveObjectSlots(CcTest::i_isolate()->heap(), buffer,
-                                 array->address(),
-                                 array->address() + array->Size());
-  CHECK(reinterpret_cast<void*>(buffer->Get(1)) ==
-        HeapObject::RawField(heap->empty_fixed_array(),
-                             FixedArrayBase::kLengthOffset));
-  CHECK(reinterpret_cast<void*>(buffer->Get(2)) ==
-        HeapObject::RawField(heap->empty_fixed_array(),
-                             FixedArrayBase::kLengthOffset));
-  delete buffer;
-}
-
-
-TEST(FilterInvalidSlotsBufferEntries) {
-  FLAG_manual_evacuation_candidates_selection = true;
-  CcTest::InitializeVM();
-  v8::HandleScope scope(CcTest::isolate());
-  Isolate* isolate = CcTest::i_isolate();
-  Heap* heap = isolate->heap();
-  Factory* factory = isolate->factory();
-  SlotsBuffer* buffer = new SlotsBuffer(NULL);
-
-  // Set up a fake black object that will contain a recorded SMI, a recorded
-  // pointer to a new space object, and a recorded pointer to a non-evacuation
-  // candidate object. These object should be filtered out. Additionally,
-  // we point to an evacuation candidate object which should not be filtered
-  // out.
-
-  // Create fake object and mark it black.
-  Handle<FixedArray> fake_object = factory->NewFixedArray(23, TENURED);
-  MarkBit mark_bit = Marking::MarkBitFrom(*fake_object);
-  Marking::MarkBlack(mark_bit);
-
-  // Write a SMI into field one and record its address;
-  Object** field_smi = fake_object->RawFieldOfElementAt(0);
-  *field_smi = Smi::FromInt(100);
-  buffer->Add(field_smi);
-
-  // Write a new space reference into field 2 and record its address;
-  Handle<FixedArray> new_space_object = factory->NewFixedArray(23);
-  mark_bit = Marking::MarkBitFrom(*new_space_object);
-  Marking::MarkBlack(mark_bit);
-  Object** field_new_space = fake_object->RawFieldOfElementAt(1);
-  *field_new_space = *new_space_object;
-  buffer->Add(field_new_space);
-
-  // Write an old space reference into field 3 which points to an object not on
-  // an evacuation candidate.
-  Handle<FixedArray> old_space_object_non_evacuation =
-      factory->NewFixedArray(23, TENURED);
-  mark_bit = Marking::MarkBitFrom(*old_space_object_non_evacuation);
-  Marking::MarkBlack(mark_bit);
-  Object** field_old_space_object_non_evacuation =
-      fake_object->RawFieldOfElementAt(2);
-  *field_old_space_object_non_evacuation = *old_space_object_non_evacuation;
-  buffer->Add(field_old_space_object_non_evacuation);
-
-  // Write an old space reference into field 4 which points to an object on an
-  // evacuation candidate.
-  SimulateFullSpace(heap->old_space());
-  Handle<FixedArray> valid_object =
-      isolate->factory()->NewFixedArray(23, TENURED);
-  Page* page = Page::FromAddress(valid_object->address());
-  page->SetFlag(MemoryChunk::EVACUATION_CANDIDATE);
-  Object** valid_field = fake_object->RawFieldOfElementAt(3);
-  *valid_field = *valid_object;
-  buffer->Add(valid_field);
-
-  SlotsBuffer::RemoveInvalidSlots(heap, buffer);
-  Object** kRemovedEntry = HeapObject::RawField(heap->empty_fixed_array(),
-                                                FixedArrayBase::kLengthOffset);
-  CHECK_EQ(buffer->Get(0), kRemovedEntry);
-  CHECK_EQ(buffer->Get(1), kRemovedEntry);
-  CHECK_EQ(buffer->Get(2), kRemovedEntry);
-  CHECK_EQ(buffer->Get(3), valid_field);
-
-  // Clean-up to make verify heap happy.
-  mark_bit = Marking::MarkBitFrom(*fake_object);
-  Marking::MarkWhite(mark_bit);
-  mark_bit = Marking::MarkBitFrom(*new_space_object);
-  Marking::MarkWhite(mark_bit);
-  mark_bit = Marking::MarkBitFrom(*old_space_object_non_evacuation);
-  Marking::MarkWhite(mark_bit);
-
-  delete buffer;
-}
-
-
 TEST(ContextMeasure) {
   CcTest::InitializeVM();
   v8::HandleScope scope(CcTest::isolate());
   Isolate* isolate = CcTest::i_isolate();
   LocalContext context;
 
   int size_upper_limit = 0;
   int count_upper_limit = 0;
   HeapIterator it(CcTest::heap());
   for (HeapObject* obj = it.next(); obj != NULL; obj = it.next()) {
@@ skipping 105 matching lines @@
   // The CollectGarbage call above starts sweeper threads.
   // The crash will happen if the following two functions
   // are called before sweeping finishes.
   heap->StartIncrementalMarking();
   heap->FinalizeIncrementalMarkingIfComplete("test");
 }
 
 
 }  // namespace internal
 }  // namespace v8