bb31612af1
BUG=chromium:694255 Review-Url: https://codereview.chromium.org/2737483002 Cr-Commit-Position: refs/heads/master@{#43609}
113 lines
4.5 KiB
C++
113 lines
4.5 KiB
C++
// Copyright 2016 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include <stdlib.h>
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#include "src/globals.h"
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#include "src/heap/marking.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace v8 {
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namespace internal {
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TEST(Marking, TransitionWhiteBlackWhite) {
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Bitmap* bitmap = reinterpret_cast<Bitmap*>(
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calloc(Bitmap::kSize / kPointerSize, kPointerSize));
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const int kLocationsSize = 3;
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int position[kLocationsSize] = {
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Bitmap::kBitsPerCell - 2, Bitmap::kBitsPerCell - 1, Bitmap::kBitsPerCell};
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for (int i = 0; i < kLocationsSize; i++) {
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MarkBit mark_bit = bitmap->MarkBitFromIndex(position[i]);
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CHECK(Marking::IsWhite(mark_bit));
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CHECK(!Marking::IsImpossible(mark_bit));
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Marking::WhiteToBlack(mark_bit);
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CHECK(Marking::IsBlack(mark_bit));
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CHECK(!Marking::IsImpossible(mark_bit));
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Marking::MarkWhite(mark_bit);
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CHECK(Marking::IsWhite(mark_bit));
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CHECK(!Marking::IsImpossible(mark_bit));
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}
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free(bitmap);
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}
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TEST(Marking, TransitionWhiteGreyBlackGrey) {
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Bitmap* bitmap = reinterpret_cast<Bitmap*>(
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calloc(Bitmap::kSize / kPointerSize, kPointerSize));
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const int kLocationsSize = 3;
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int position[kLocationsSize] = {
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Bitmap::kBitsPerCell - 2, Bitmap::kBitsPerCell - 1, Bitmap::kBitsPerCell};
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for (int i = 0; i < kLocationsSize; i++) {
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MarkBit mark_bit = bitmap->MarkBitFromIndex(position[i]);
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CHECK(Marking::IsWhite(mark_bit));
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CHECK(!Marking::IsBlackOrGrey(mark_bit));
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CHECK(!Marking::IsImpossible(mark_bit));
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Marking::WhiteToGrey(mark_bit);
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CHECK(Marking::IsGrey(mark_bit));
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CHECK(Marking::IsBlackOrGrey(mark_bit));
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CHECK(!Marking::IsImpossible(mark_bit));
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Marking::GreyToBlack(mark_bit);
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CHECK(Marking::IsBlack(mark_bit));
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CHECK(Marking::IsBlackOrGrey(mark_bit));
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CHECK(!Marking::IsImpossible(mark_bit));
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Marking::BlackToGrey(mark_bit);
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CHECK(Marking::IsGrey(mark_bit));
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CHECK(Marking::IsBlackOrGrey(mark_bit));
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CHECK(!Marking::IsImpossible(mark_bit));
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Marking::MarkWhite(mark_bit);
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CHECK(Marking::IsWhite(mark_bit));
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CHECK(!Marking::IsImpossible(mark_bit));
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}
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free(bitmap);
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}
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TEST(Marking, SetAndClearRange) {
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Bitmap* bitmap = reinterpret_cast<Bitmap*>(
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calloc(Bitmap::kSize / kPointerSize, kPointerSize));
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for (int i = 0; i < 3; i++) {
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bitmap->SetRange(i, Bitmap::kBitsPerCell + i);
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CHECK_EQ(reinterpret_cast<uint32_t*>(bitmap)[0], 0xffffffffu << i);
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CHECK_EQ(reinterpret_cast<uint32_t*>(bitmap)[1], (1u << i) - 1);
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bitmap->ClearRange(i, Bitmap::kBitsPerCell + i);
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CHECK_EQ(reinterpret_cast<uint32_t*>(bitmap)[0], 0x0u);
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CHECK_EQ(reinterpret_cast<uint32_t*>(bitmap)[1], 0x0u);
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}
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free(bitmap);
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}
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TEST(Marking, ClearMultipleRanges) {
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Bitmap* bitmap = reinterpret_cast<Bitmap*>(
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calloc(Bitmap::kSize / kPointerSize, kPointerSize));
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CHECK(bitmap->AllBitsClearInRange(0, Bitmap::kBitsPerCell * 3));
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bitmap->SetRange(0, Bitmap::kBitsPerCell * 3);
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CHECK_EQ(reinterpret_cast<uint32_t*>(bitmap)[0], 0xffffffffu);
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CHECK_EQ(reinterpret_cast<uint32_t*>(bitmap)[1], 0xffffffffu);
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CHECK_EQ(reinterpret_cast<uint32_t*>(bitmap)[2], 0xffffffffu);
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CHECK(bitmap->AllBitsSetInRange(0, Bitmap::kBitsPerCell * 3));
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bitmap->ClearRange(Bitmap::kBitsPerCell / 2, Bitmap::kBitsPerCell);
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bitmap->ClearRange(Bitmap::kBitsPerCell,
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Bitmap::kBitsPerCell + Bitmap::kBitsPerCell / 2);
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bitmap->ClearRange(Bitmap::kBitsPerCell * 2 + 8,
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Bitmap::kBitsPerCell * 2 + 16);
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bitmap->ClearRange(Bitmap::kBitsPerCell * 2 + 24, Bitmap::kBitsPerCell * 3);
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CHECK_EQ(reinterpret_cast<uint32_t*>(bitmap)[0], 0xffffu);
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CHECK(bitmap->AllBitsSetInRange(0, Bitmap::kBitsPerCell / 2));
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CHECK(bitmap->AllBitsClearInRange(Bitmap::kBitsPerCell / 2,
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Bitmap::kBitsPerCell));
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CHECK_EQ(reinterpret_cast<uint32_t*>(bitmap)[1], 0xffff0000u);
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CHECK(
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bitmap->AllBitsSetInRange(Bitmap::kBitsPerCell + Bitmap::kBitsPerCell / 2,
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2 * Bitmap::kBitsPerCell));
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CHECK(bitmap->AllBitsClearInRange(
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Bitmap::kBitsPerCell, Bitmap::kBitsPerCell + Bitmap::kBitsPerCell / 2));
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CHECK_EQ(reinterpret_cast<uint32_t*>(bitmap)[2], 0xff00ffu);
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CHECK(bitmap->AllBitsSetInRange(2 * Bitmap::kBitsPerCell,
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2 * Bitmap::kBitsPerCell + 8));
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CHECK(bitmap->AllBitsClearInRange(2 * Bitmap::kBitsPerCell + 24,
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Bitmap::kBitsPerCell * 3));
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free(bitmap);
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}
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} // namespace internal
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} // namespace v8
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