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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_GLOBAL_HANDLE_MARKING_VISITOR_H_
#define V8_HEAP_GLOBAL_HANDLE_MARKING_VISITOR_H_
#include "src/handles/traced-handles.h"
#include "src/heap/base/stack.h"
#include "src/heap/heap.h"
#include "src/heap/mark-compact.h"
namespace v8 {
namespace internal {
// Root marking visitor for conservatively marking traced global handles.
// The visitor assumes that on-stack pointers may point into global handle nodes
// which requires them to be kept alive.
class GlobalHandleMarkingVisitor final : public ::heap::base::StackVisitor {
public:
GlobalHandleMarkingVisitor(Heap&, MarkingWorklists::Local&);
~GlobalHandleMarkingVisitor() override = default;
void VisitPointer(const void*) override;
private:
Heap& heap_;
MarkingState& marking_state_;
MarkingWorklists::Local& local_marking_worklist_;
const TracedHandles::NodeBounds traced_node_bounds_;
};
#endif // V8_HEAP_GLOBAL_HANDLE_MARKING_VISITOR_H_
} // namespace internal
} // namespace v8
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