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.
124 lines
2.2 KiB
C++
124 lines
2.2 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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#include <LibCore/Timer.h>
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#include <LibGC/Function.h>
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#include <LibGC/Heap.h>
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#include <LibWeb/Platform/Timer.h>
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namespace Web::Platform {
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GC_DEFINE_ALLOCATOR(Timer);
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Timer::Timer()
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: m_timer(Core::Timer::create())
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{
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m_timer->on_timeout = [this] {
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if (on_timeout)
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on_timeout->function()();
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};
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}
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Timer::~Timer() = default;
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void Timer::finalize()
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{
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Base::finalize();
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stop();
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on_timeout = nullptr;
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}
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bool Timer::must_survive_garbage_collection() const
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{
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return is_active();
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}
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void Timer::visit_edges(JS::Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(on_timeout);
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}
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GC::Ref<Timer> Timer::create(GC::Heap& heap)
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{
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return heap.allocate<Timer>();
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}
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GC::Ref<Timer> Timer::create_repeating(GC::Heap& heap, int interval_ms, GC::Ptr<GC::Function<void()>> timeout_handler)
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{
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auto timer = heap.allocate<Timer>();
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timer->set_single_shot(false);
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timer->set_interval(interval_ms);
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timer->on_timeout = move(timeout_handler);
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return timer;
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}
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GC::Ref<Timer> Timer::create_single_shot(GC::Heap& heap, int interval_ms, GC::Ptr<GC::Function<void()>> timeout_handler)
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{
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auto timer = heap.allocate<Timer>();
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timer->set_single_shot(true);
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timer->set_interval(interval_ms);
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timer->on_timeout = move(timeout_handler);
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return timer;
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}
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void Timer::start()
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{
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m_timer->start();
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}
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void Timer::start(int interval_ms)
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{
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m_timer->start(interval_ms);
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}
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void Timer::restart()
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{
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m_timer->restart();
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}
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void Timer::restart(int interval_ms)
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{
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m_timer->restart(interval_ms);
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}
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void Timer::stop()
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{
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m_timer->stop();
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}
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void Timer::set_active(bool active)
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{
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m_timer->set_active(active);
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}
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bool Timer::is_active() const
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{
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return m_timer->is_active();
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}
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int Timer::interval() const
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{
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return m_timer->interval();
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}
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void Timer::set_interval(int interval_ms)
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{
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m_timer->set_interval(interval_ms);
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}
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bool Timer::is_single_shot() const
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{
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return m_timer->is_single_shot();
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}
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void Timer::set_single_shot(bool single_shot)
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{
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m_timer->set_single_shot(single_shot);
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}
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}
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