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https://github.com/RGBCube/serenity
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bfd354492e
With this change, we now have ~1200 CellAllocators across both LibJS and LibWeb in a normal WebContent instance. This gives us a minimum heap size of 4.7 MiB in the scenario where we only have one cell allocated per type. Of course, in practice there will be many more of each type, so the effective overhead is quite a bit smaller than that in practice. I left a few types unconverted to this mechanism because I got tired of doing this. :^)
54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
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* Copyright (c) 2022, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibWeb/HTML/EventLoop/EventLoop.h>
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#include <LibWeb/HTML/Window.h>
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#include <LibWeb/HighResolutionTime/TimeOrigin.h>
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#include <LibWeb/RequestIdleCallback/IdleDeadline.h>
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namespace Web::RequestIdleCallback {
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JS_DEFINE_ALLOCATOR(IdleDeadline);
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JS::NonnullGCPtr<IdleDeadline> IdleDeadline::create(JS::Realm& realm, bool did_timeout)
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{
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return realm.heap().allocate<IdleDeadline>(realm, realm, did_timeout);
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}
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IdleDeadline::IdleDeadline(JS::Realm& realm, bool did_timeout)
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: PlatformObject(realm)
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, m_did_timeout(did_timeout)
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{
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}
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void IdleDeadline::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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set_prototype(&Bindings::ensure_web_prototype<Bindings::IdleDeadlinePrototype>(realm, "IdleDeadline"));
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}
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IdleDeadline::~IdleDeadline() = default;
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// https://w3c.github.io/requestidlecallback/#dom-idledeadline-timeremaining
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double IdleDeadline::time_remaining() const
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{
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auto const& event_loop = HTML::main_thread_event_loop();
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// 1. Let now be a DOMHighResTimeStamp representing current high resolution time in milliseconds.
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auto now = HighResolutionTime::unsafe_shared_current_time();
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// 2. Let deadline be the result of calling IdleDeadline's get deadline time algorithm.
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auto deadline = event_loop.compute_deadline();
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// 3. Let timeRemaining be deadline - now.
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auto time_remaining = deadline - now;
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// 4. If timeRemaining is negative, set it to 0.
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if (time_remaining < 0)
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time_remaining = 0;
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// 5. Return timeRemaining.
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// NOTE: coarsening to milliseconds
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return ceil(time_remaining);
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}
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}
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