ee765e241e
Rather than returning the number of whole elapsed milliseconds, we now return the number of elapsed nanoseconds divided by one million. This allows us to make use of the fractional part of the double that is returned.
53 lines
2.2 KiB
C++
53 lines
2.2 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
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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 <LibCore/ElapsedTimer.h>
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#include <LibWeb/DOM/EventTarget.h>
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#include <LibWeb/UserTiming/PerformanceMark.h>
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#include <LibWeb/UserTiming/PerformanceMeasure.h>
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namespace Web::HighResolutionTime {
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class Performance final : public DOM::EventTarget {
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WEB_PLATFORM_OBJECT(Performance, DOM::EventTarget);
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JS_DECLARE_ALLOCATOR(Performance);
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public:
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virtual ~Performance() override;
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double now() const { return static_cast<double>(m_timer.elapsed_time().to_nanoseconds()) / 1e6; }
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double time_origin() const;
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JS::GCPtr<NavigationTiming::PerformanceTiming> timing();
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WebIDL::ExceptionOr<JS::NonnullGCPtr<UserTiming::PerformanceMark>> mark(String const& mark_name, UserTiming::PerformanceMarkOptions const& mark_options = {});
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void clear_marks(Optional<String> mark_name);
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WebIDL::ExceptionOr<JS::NonnullGCPtr<UserTiming::PerformanceMeasure>> measure(String const& measure_name, Variant<String, UserTiming::PerformanceMeasureOptions> const& start_or_measure_options, Optional<String> end_mark);
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void clear_measures(Optional<String> measure_name);
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WebIDL::ExceptionOr<Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>>> get_entries() const;
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WebIDL::ExceptionOr<Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>>> get_entries_by_type(String const& type) const;
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WebIDL::ExceptionOr<Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>>> get_entries_by_name(String const& name, Optional<String> type) const;
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private:
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explicit Performance(HTML::Window&);
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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WebIDL::ExceptionOr<HighResolutionTime::DOMHighResTimeStamp> convert_name_to_timestamp(JS::Realm& realm, String const& name);
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WebIDL::ExceptionOr<HighResolutionTime::DOMHighResTimeStamp> convert_mark_to_timestamp(JS::Realm& realm, Variant<String, HighResolutionTime::DOMHighResTimeStamp> mark);
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JS::NonnullGCPtr<HTML::Window> m_window;
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JS::GCPtr<NavigationTiming::PerformanceTiming> m_timing;
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Core::ElapsedTimer m_timer;
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};
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}
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