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https://github.com/RGBCube/serenity
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83bd675477
Instead of iterating *all* swept cells when pruning weak containers, only iterate the cells actually *in* the container. Also, instead of compiling a list of all swept cells, we can simply check the Cell::state() flag to know if something should be pruned.
55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
/*
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* Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/SinglyLinkedList.h>
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#include <LibJS/Runtime/FunctionObject.h>
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#include <LibJS/Runtime/GlobalObject.h>
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#include <LibJS/Runtime/Object.h>
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#include <LibJS/Runtime/Value.h>
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#include <LibJS/Runtime/WeakContainer.h>
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namespace JS {
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class FinalizationRegistry final
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: public Object
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, public WeakContainer {
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JS_OBJECT(FinalizationRegistry, Object);
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public:
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static FinalizationRegistry* create(GlobalObject&, FunctionObject&);
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explicit FinalizationRegistry(FunctionObject&, Object& prototype);
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virtual ~FinalizationRegistry() override;
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void add_finalization_record(Cell& target, Value held_value, Object* unregister_token);
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bool remove_by_token(Object& unregister_token);
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void cleanup(FunctionObject* callback = nullptr);
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virtual void remove_dead_cells(Badge<Heap>) override;
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private:
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virtual void visit_edges(Visitor& visitor) override;
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#ifdef JS_TRACK_ZOMBIE_CELLS
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virtual void did_become_zombie() override
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{
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deregister();
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}
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#endif
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FunctionObject* m_cleanup_callback { nullptr };
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struct FinalizationRecord {
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Cell* target { nullptr };
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Value held_value;
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Object* unregister_token { nullptr };
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};
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SinglyLinkedList<FinalizationRecord> m_records;
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};
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}
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