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// Copyright 2022 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.
#ifndef V8_HEAP_EVACUATION_VERIFIER_H_
#define V8_HEAP_EVACUATION_VERIFIER_H_
#include "src/heap/new-spaces.h"
#include "src/heap/paged-spaces.h"
#include "src/objects/map.h"
#include "src/objects/visitors.h"
namespace v8 {
namespace internal {
#ifdef VERIFY_HEAP
class EvacuationVerifier final : public ObjectVisitorWithCageBases,
public RootVisitor {
public:
explicit EvacuationVerifier(Heap* heap);
void Run();
void VisitPointers(Tagged<HeapObject> host, ObjectSlot start,
ObjectSlot end) final;
void VisitPointers(Tagged<HeapObject> host, MaybeObjectSlot start,
MaybeObjectSlot end) final;
void VisitInstructionStreamPointer(Tagged<Code> host,
InstructionStreamSlot slot) final;
void VisitRootPointers(Root root, const char* description,
FullObjectSlot start, FullObjectSlot end) final;
void VisitMapPointer(Tagged<HeapObject> object) final;
void VisitCodeTarget(Tagged<InstructionStream> host, RelocInfo* rinfo) final;
void VisitEmbeddedPointer(Tagged<InstructionStream> host,
RelocInfo* rinfo) final;
private:
V8_INLINE void VerifyHeapObjectImpl(Tagged<HeapObject> heap_object);
V8_INLINE bool ShouldVerifyObject(Tagged<HeapObject> heap_object);
template <typename TSlot>
void VerifyPointersImpl(TSlot start, TSlot end);
void VerifyRoots();
void VerifyEvacuationOnPage(Address start, Address end);
void VerifyEvacuation(NewSpace* new_space);
void VerifyEvacuation(PagedSpaceBase* paged_space);
Heap* heap_;
};
#endif // VERIFY_HEAP
} // namespace internal
} // namespace v8
#endif // V8_HEAP_EVACUATION_VERIFIER_H_
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