mirror of
https://github.com/LadybirdBrowser/ladybird
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d51d849943
Treat active Platform::Timer objects as event-loop roots so their GC callbacks stay marked while the underlying Core::Timer can still fire. Finalize unreachable timers by stopping the Core timer and dropping the callback, preventing incremental sweep from leaving a timer with a raw pointer to a swept GC::Function.
58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
/*
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* Copyright (c) 2022, Andreas Kling <andreas@ladybird.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/NonnullRefPtr.h>
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#include <LibCore/Forward.h>
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#include <LibGC/CellAllocator.h>
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#include <LibJS/Heap/Cell.h>
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namespace Web::Platform {
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class Timer : public JS::Cell {
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GC_CELL(Timer, JS::Cell);
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GC_DECLARE_ALLOCATOR(Timer);
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public:
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static GC::Ref<Timer> create(GC::Heap&);
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static GC::Ref<Timer> create_repeating(GC::Heap&, int interval_ms, GC::Ptr<GC::Function<void()>> timeout_handler);
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static GC::Ref<Timer> create_single_shot(GC::Heap&, int interval_ms, GC::Ptr<GC::Function<void()>> timeout_handler);
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static constexpr bool OVERRIDES_MUST_SURVIVE_GARBAGE_COLLECTION = true;
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static constexpr bool OVERRIDES_FINALIZE = true;
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virtual ~Timer();
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virtual void finalize() override;
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virtual bool must_survive_garbage_collection() const override;
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void start();
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void start(int interval_ms);
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void restart();
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void restart(int interval_ms);
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void stop();
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void set_active(bool);
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bool is_active() const;
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int interval() const;
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void set_interval(int interval_ms);
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bool is_single_shot() const;
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void set_single_shot(bool);
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GC::Ptr<GC::Function<void()>> on_timeout;
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private:
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Timer();
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virtual void visit_edges(JS::Cell::Visitor&) override;
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NonnullRefPtr<Core::Timer> m_timer;
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};
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}
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