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https://github.com/LadybirdBrowser/ladybird.git
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a6dfc74e93
Before this change, we were going through the chain of base classes for each IDL interface object and having them set the prototype to their prototype. Instead of doing that, reorder things so that we set the right prototype immediately in Foo::initialize(), and then don't bother in all the base class overrides. This knocks off a ~1% profile item on Speedometer 3.
48 lines
1.5 KiB
C++
48 lines
1.5 KiB
C++
/*
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* Copyright (c) 2021, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2025, Tim Ledbetter <tim.ledbetter@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 <LibWeb/Bindings/PerformanceTimingPrototype.h>
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#include <LibWeb/HighResolutionTime/TimeOrigin.h>
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#include <LibWeb/NavigationTiming/PerformanceTiming.h>
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namespace Web::NavigationTiming {
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GC_DEFINE_ALLOCATOR(PerformanceTiming);
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PerformanceTiming::PerformanceTiming(JS::Realm& realm)
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: PlatformObject(realm)
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{
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}
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PerformanceTiming::~PerformanceTiming() = default;
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void PerformanceTiming::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(PerformanceTiming);
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Base::initialize(realm);
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}
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DOM::DocumentLoadTimingInfo const& PerformanceTiming::document_load_timing_info(JS::Object const& global_object) const
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{
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VERIFY(is<HTML::Window>(global_object));
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auto& window = static_cast<HTML::Window const&>(global_object);
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auto document = window.document();
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return document->load_timing_info();
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}
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u64 PerformanceTiming::monotonic_timestamp_to_wall_time_milliseconds(Function<HighResolutionTime::DOMHighResTimeStamp(DOM::DocumentLoadTimingInfo const&)> selector) const
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{
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auto& global_object = HTML::relevant_global_object(*this);
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auto timestamp = selector(document_load_timing_info(global_object));
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if (timestamp == 0)
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return 0;
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auto wall_time = timestamp - HighResolutionTime::estimated_monotonic_time_of_the_unix_epoch();
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auto coarsened_time = HighResolutionTime::coarsen_time(wall_time);
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return static_cast<u64>(coarsened_time);
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}
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}
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