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/*
* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/SinglyLinkedList.h>
#include <LibJS/Runtime/FunctionObject.h>
#include <LibJS/Runtime/GlobalObject.h>
#include <LibJS/Runtime/Object.h>
#include <LibJS/Runtime/Value.h>
#include <LibJS/Runtime/WeakContainer.h>
namespace JS {
class FinalizationRegistry final
: public Object
, public WeakContainer {
JS_OBJECT(FinalizationRegistry, Object);
public:
static FinalizationRegistry* create(GlobalObject&, FunctionObject&);
explicit FinalizationRegistry(FunctionObject&, Object& prototype);
virtual ~FinalizationRegistry() override;
void add_finalization_record(Cell& target, Value held_value, Object* unregister_token);
bool remove_by_token(Object& unregister_token);
void cleanup(FunctionObject* callback = nullptr);
virtual void remove_dead_cells(Badge<Heap>) override;
private:
virtual void visit_edges(Visitor& visitor) override;
#ifdef JS_TRACK_ZOMBIE_CELLS
virtual void did_become_zombie() override
{
deregister();
}
#endif
FunctionObject* m_cleanup_callback { nullptr };
struct FinalizationRecord {
Cell* target { nullptr };
Value held_value;
Object* unregister_token { nullptr };
};
SinglyLinkedList<FinalizationRecord> m_records;
};
}
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