v8/test/unittests/heap/marking-unittest.cc

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// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <stdlib.h>
#include "src/globals.h"
#include "src/heap/marking.h"
#include "test/unittests/heap/bitmap-test-utils.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace v8 {
namespace internal {
template <typename T>
using MarkingTest = TestWithBitmap<T>;
TYPED_TEST_SUITE(MarkingTest, BitmapTypes);
TYPED_TEST(MarkingTest, TransitionWhiteBlackWhite) {
auto bitmap = this->bitmap();
const int kLocationsSize = 3;
int position[kLocationsSize] = {
Bitmap::kBitsPerCell - 2, Bitmap::kBitsPerCell - 1, Bitmap::kBitsPerCell};
for (int i = 0; i < kLocationsSize; i++) {
MarkBit mark_bit = bitmap->MarkBitFromIndex(position[i]);
CHECK(Marking::IsWhite(mark_bit));
CHECK(!Marking::IsImpossible(mark_bit));
Marking::WhiteToBlack<AccessMode::NON_ATOMIC>(mark_bit);
CHECK(Marking::IsBlack(mark_bit));
CHECK(!Marking::IsImpossible(mark_bit));
Marking::MarkWhite(mark_bit);
CHECK(Marking::IsWhite(mark_bit));
CHECK(!Marking::IsImpossible(mark_bit));
}
}
TYPED_TEST(MarkingTest, TransitionWhiteGreyBlack) {
auto bitmap = this->bitmap();
const int kLocationsSize = 3;
int position[kLocationsSize] = {
Bitmap::kBitsPerCell - 2, Bitmap::kBitsPerCell - 1, Bitmap::kBitsPerCell};
for (int i = 0; i < kLocationsSize; i++) {
MarkBit mark_bit = bitmap->MarkBitFromIndex(position[i]);
CHECK(Marking::IsWhite(mark_bit));
CHECK(!Marking::IsBlackOrGrey(mark_bit));
CHECK(!Marking::IsImpossible(mark_bit));
Marking::WhiteToGrey<AccessMode::NON_ATOMIC>(mark_bit);
CHECK(Marking::IsGrey(mark_bit));
CHECK(Marking::IsBlackOrGrey(mark_bit));
CHECK(!Marking::IsImpossible(mark_bit));
Marking::GreyToBlack<AccessMode::NON_ATOMIC>(mark_bit);
CHECK(Marking::IsBlack(mark_bit));
CHECK(Marking::IsBlackOrGrey(mark_bit));
CHECK(!Marking::IsImpossible(mark_bit));
Marking::MarkWhite(mark_bit);
CHECK(Marking::IsWhite(mark_bit));
CHECK(!Marking::IsImpossible(mark_bit));
}
}
} // namespace internal
} // namespace v8