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. :^)
56 lines
2.2 KiB
C++
56 lines
2.2 KiB
C++
/*
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* Copyright (c) 2023, Luke Wilde <lukew@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 <LibWeb/PerformanceTimeline/PerformanceEntry.h>
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namespace Web::UserTiming {
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// https://w3c.github.io/user-timing/#ref-for-dom-performancemarkoptions-1
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struct PerformanceMarkOptions {
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JS::Value detail { JS::js_null() };
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Optional<HighResolutionTime::DOMHighResTimeStamp> start_time;
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};
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// https://w3c.github.io/user-timing/#dom-performancemark
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class PerformanceMark final : public PerformanceTimeline::PerformanceEntry {
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WEB_PLATFORM_OBJECT(PerformanceMark, PerformanceTimeline::PerformanceEntry);
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JS_DECLARE_ALLOCATOR(PerformanceMark);
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public:
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virtual ~PerformanceMark();
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static WebIDL::ExceptionOr<JS::NonnullGCPtr<PerformanceMark>> construct_impl(JS::Realm&, String const& mark_name, PerformanceMarkOptions const& mark_options = {});
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// NOTE: These three functions are answered by the registry for the given entry type.
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// https://w3c.github.io/timing-entrytypes-registry/#registry
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// https://w3c.github.io/timing-entrytypes-registry/#dfn-availablefromtimeline
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static PerformanceTimeline::AvailableFromTimeline available_from_timeline() { return PerformanceTimeline::AvailableFromTimeline::Yes; }
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// https://w3c.github.io/timing-entrytypes-registry/#dfn-maxbuffersize
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// NOTE: The empty state represents Infinite size.
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static Optional<u64> max_buffer_size() { return OptionalNone {}; }
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// https://w3c.github.io/timing-entrytypes-registry/#dfn-should-add-entry
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virtual PerformanceTimeline::ShouldAddEntry should_add_entry(Optional<PerformanceTimeline::PerformanceObserverInit const&> = {}) const override { return PerformanceTimeline::ShouldAddEntry::Yes; }
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virtual FlyString const& entry_type() const override;
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JS::Value detail() const { return m_detail; }
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private:
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PerformanceMark(JS::Realm&, String const& name, HighResolutionTime::DOMHighResTimeStamp start_time, HighResolutionTime::DOMHighResTimeStamp duration, JS::Value detail);
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(JS::Cell::Visitor&) override;
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// https://w3c.github.io/user-timing/#dom-performancemark-detail
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JS::Value m_detail { JS::js_null() };
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};
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}
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