chromium/v8/test/unittests/heap/cppgc/write-barrier-unittest.cc

// Copyright 2020 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 "include/cppgc/internal/write-barrier.h"

#include <algorithm>
#include <initializer_list>
#include <vector>

#include "include/cppgc/heap-consistency.h"
#include "include/cppgc/internal/pointer-policies.h"
#include "src/base/logging.h"
#include "src/heap/cppgc/heap-object-header.h"
#include "src/heap/cppgc/marker.h"
#include "test/unittests/heap/cppgc/tests.h"
#include "testing/gtest/include/gtest/gtest.h"

namespace cppgc {
namespace internal {

namespace {

class V8_NODISCARD IncrementalMarkingScope { … };

constexpr MarkingConfig IncrementalMarkingScope::kIncrementalConfig;

class V8_NODISCARD ExpectWriteBarrierFires final
    : private IncrementalMarkingScope { … };

class V8_NODISCARD ExpectNoWriteBarrierFires final
    : private IncrementalMarkingScope { … };

class GCed : public GarbageCollected<GCed> { … };

}  // namespace

class WriteBarrierTest : public testing::TestWithHeap { … };

class NoWriteBarrierTest : public testing::TestWithHeap { … };

// =============================================================================
// Basic support. ==============================================================
// =============================================================================

TEST_F(WriteBarrierTest, EnableDisableIncrementalMarking) { … }

TEST_F(WriteBarrierTest, TriggersWhenMarkingIsOn) { … }

TEST_F(NoWriteBarrierTest, BailoutWhenMarkingIsOff) { … }

TEST_F(WriteBarrierTest, BailoutIfMarked) { … }

TEST_F(WriteBarrierTest, MemberInitializingStoreNoBarrier) { … }

TEST_F(WriteBarrierTest, MemberReferenceAssignMember) { … }

TEST_F(WriteBarrierTest, MemberSetSentinelValueNoBarrier) { … }

TEST_F(WriteBarrierTest, MemberCopySentinelValueNoBarrier) { … }

// =============================================================================
// Mixin support. ==============================================================
// =============================================================================

namespace {

class Mixin : public GarbageCollectedMixin { … };

class ClassWithVirtual { … };

class Child : public GarbageCollected<Child>,
              public ClassWithVirtual,
              public Mixin { … };

class ParentWithMixinPointer : public GarbageCollected<ParentWithMixinPointer> { … };

}  // namespace

TEST_F(WriteBarrierTest, WriteBarrierOnUnmarkedMixinApplication) { … }

TEST_F(WriteBarrierTest, NoWriteBarrierOnMarkedMixinApplication) { … }

// =============================================================================
// Raw barriers. ===============================================================
// =============================================================================

WriteBarrierParams;
WriteBarrierType;
HeapConsistency;

TEST_F(NoWriteBarrierTest, WriteBarrierBailoutWhenMarkingIsOff) { … }

TEST_F(WriteBarrierTest, DijkstraWriteBarrierTriggersWhenMarkingIsOn) { … }

TEST_F(WriteBarrierTest, DijkstraWriteBarrierBailoutIfMarked) { … }

namespace {

struct InlinedObject { … };

class GCedWithInlinedArray : public GarbageCollected<GCedWithInlinedArray> { … };

}  // namespace

TEST_F(WriteBarrierTest, DijkstraWriteBarrierRangeTriggersWhenMarkingIsOn) { … }

TEST_F(WriteBarrierTest, DijkstraWriteBarrierRangeBailoutIfMarked) { … }

TEST_F(WriteBarrierTest, SteeleWriteBarrierTriggersWhenMarkingIsOn) { … }

TEST_F(WriteBarrierTest, SteeleWriteBarrierBailoutIfNotMarked) { … }

}  // namespace internal
}  // namespace cppgc