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fd4f80ce54
PR-URL: https://github.com/nodejs/node/pull/42657 Reviewed-By: Darshan Sen <raisinten@gmail.com> Reviewed-By: Richard Lau <rlau@redhat.com> Reviewed-By: Jiawen Geng <technicalcute@gmail.com> Reviewed-By: Michael Dawson <midawson@redhat.com>
82 lines
2.6 KiB
C++
82 lines
2.6 KiB
C++
// Copyright 2022 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 "src/heap/base/active-system-pages.h"
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#include "testing/gtest/include/gtest/gtest.h"
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namespace heap {
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namespace base {
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TEST(ActiveSystemPagesTest, Add) {
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ActiveSystemPages pages;
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const size_t kPageSizeBits = 0;
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EXPECT_EQ(pages.Add(0, 1, kPageSizeBits), size_t{1});
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EXPECT_EQ(pages.Add(1, 2, kPageSizeBits), size_t{1});
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EXPECT_EQ(pages.Add(63, 64, kPageSizeBits), size_t{1});
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EXPECT_EQ(pages.Size(kPageSizeBits), size_t{3});
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// Try to add page a second time.
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EXPECT_EQ(pages.Add(0, 2, kPageSizeBits), size_t{0});
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}
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TEST(ActiveSystemPagesTest, AddUnalignedRange) {
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ActiveSystemPages pages;
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const size_t kPageSizeBits = 12;
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const size_t kPageSize = size_t{1} << kPageSizeBits;
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const size_t kWordSize = 8;
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EXPECT_EQ(pages.Add(0, kPageSize + kWordSize, kPageSizeBits), size_t{2});
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EXPECT_EQ(pages.Add(3 * kPageSize - kWordSize, 3 * kPageSize, kPageSizeBits),
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size_t{1});
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EXPECT_EQ(pages.Add(kPageSize + kWordSize, 3 * kPageSize - kWordSize,
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kPageSizeBits),
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size_t{0});
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EXPECT_EQ(pages.Size(kPageSizeBits), size_t{3} * kPageSize);
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}
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TEST(ActiveSystemPagesTest, AddFullBitset) {
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ActiveSystemPages pages;
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const size_t kPageSizeBits = 0;
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EXPECT_EQ(pages.Add(0, 64, kPageSizeBits), size_t{64});
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EXPECT_EQ(pages.Add(0, 64, kPageSizeBits), size_t{0});
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EXPECT_EQ(pages.Size(kPageSizeBits), size_t{64});
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}
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TEST(ActiveSystemPagesTest, Reduce) {
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ActiveSystemPages original;
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const size_t kPageSizeBits = 0;
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EXPECT_EQ(original.Add(0, 3, kPageSizeBits), size_t{3});
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ActiveSystemPages updated;
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EXPECT_EQ(updated.Add(1, 3, kPageSizeBits), size_t{2});
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EXPECT_EQ(original.Reduce(updated), size_t{1});
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}
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TEST(ActiveSystemPagesTest, ReduceFullBitset) {
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ActiveSystemPages original;
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const size_t kPageSizeBits = 0;
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EXPECT_EQ(original.Add(0, 64, kPageSizeBits), size_t{64});
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ActiveSystemPages updated;
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EXPECT_EQ(updated.Add(63, 64, kPageSizeBits), size_t{1});
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EXPECT_EQ(original.Reduce(updated), size_t{63});
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}
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TEST(ActiveSystemPagesTest, Clear) {
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ActiveSystemPages pages;
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const size_t kPageSizeBits = 0;
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EXPECT_EQ(pages.Add(0, 64, kPageSizeBits), size_t{64});
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EXPECT_EQ(pages.Clear(), size_t{64});
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EXPECT_EQ(pages.Size(kPageSizeBits), size_t{0});
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EXPECT_EQ(pages.Add(0, 2, kPageSizeBits), size_t{2});
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EXPECT_EQ(pages.Clear(), size_t{2});
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EXPECT_EQ(pages.Size(kPageSizeBits), size_t{0});
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}
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} // namespace base
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} // namespace heap
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