test/cctest/test-constantpool.cc

// Copyright 2013 the V8 project authors. All rights reserved.

// Test constant pool array code.

#include "v8.h"

#include "factory.h"
#include "objects.h"
#include "cctest.h"

using namespace v8::internal;


TEST(ConstantPool) {
  LocalContext context;
  Isolate* isolate = CcTest::i_isolate();
  Heap* heap = isolate->heap();
  Factory* factory = isolate->factory();
  v8::HandleScope scope(context->GetIsolate());

  // Check construction.
  Handle<ConstantPoolArray> array = factory->NewConstantPoolArray(3, 2, 1);
  CHECK_EQ(array->count_of_int64_entries(), 3);
  CHECK_EQ(array->count_of_ptr_entries(), 2);
  CHECK_EQ(array->count_of_int32_entries(), 1);
  CHECK_EQ(array->length(), 6);
  CHECK_EQ(array->first_int64_index(), 0);
  CHECK_EQ(array->first_ptr_index(), 3);
  CHECK_EQ(array->first_int32_index(), 5);

  // Check getters and setters.
  int64_t big_number = V8_2PART_UINT64_C(0x12345678, 9ABCDEF0);
  Handle<Object> object = factory->NewHeapNumber(4.0);
  array->set(0, big_number);
  array->set(1, 0.5);
  array->set(3, *object);
  array->set(5, 50);
  CHECK_EQ(array->get_int64_entry(0), big_number);
  CHECK_EQ(array->get_int64_entry_as_double(1), 0.5);
  CHECK_EQ(array->get_ptr_entry(3), *object);
  CHECK_EQ(array->get_int32_entry(5), 50);

  // Check pointers are updated on GC.
  Object* old_ptr = array->get_ptr_entry(3);
  CHECK_EQ(*object, old_ptr);
  heap->CollectGarbage(NEW_SPACE);
  Object* new_ptr = array->get_ptr_entry(3);
  CHECK_NE(*object, old_ptr);
  CHECK_EQ(*object, new_ptr);
}