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// 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.
#ifndef V8_HEAP_CPPGC_JS_UNIFIED_HEAP_MARKING_STATE_H_
#define V8_HEAP_CPPGC_JS_UNIFIED_HEAP_MARKING_STATE_H_
#include "include/v8-cppgc.h"
#include "src/handles/traced-handles.h"
#include "src/heap/mark-compact.h"
#include "src/heap/marking-worklist.h"
namespace v8 {
namespace internal {
// `UnifiedHeapMarkingState` is used to handle `TracedReferenceBase` and
// friends. It is used when `CppHeap` is attached but also detached. In detached
// mode, the expectation is that no non-null `TracedReferenceBase` is found.
class UnifiedHeapMarkingState final {
public:
UnifiedHeapMarkingState(Heap*, MarkingWorklists::Local*,
cppgc::internal::CollectionType);
UnifiedHeapMarkingState(const UnifiedHeapMarkingState&) = delete;
UnifiedHeapMarkingState& operator=(const UnifiedHeapMarkingState&) = delete;
void Update(MarkingWorklists::Local*);
V8_INLINE void MarkAndPush(const TracedReferenceBase&);
private:
Heap* const heap_;
MarkingState* const marking_state_;
MarkingWorklists::Local* local_marking_worklist_ = nullptr;
const bool track_retaining_path_;
const TracedHandles::MarkMode mark_mode_;
};
} // namespace internal
} // namespace v8
#endif // V8_HEAP_CPPGC_JS_UNIFIED_HEAP_MARKING_STATE_H_
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