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. :^)
93 lines
4.2 KiB
C++
93 lines
4.2 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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#include <AK/QuickSort.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Bindings/PerformanceObserverEntryListPrototype.h>
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#include <LibWeb/PerformanceTimeline/PerformanceEntry.h>
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#include <LibWeb/PerformanceTimeline/PerformanceObserverEntryList.h>
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#include <LibWeb/WebIDL/ExceptionOr.h>
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namespace Web::PerformanceTimeline {
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JS_DEFINE_ALLOCATOR(PerformanceObserverEntryList);
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PerformanceObserverEntryList::PerformanceObserverEntryList(JS::Realm& realm, Vector<JS::NonnullGCPtr<PerformanceTimeline::PerformanceEntry>>&& entry_list)
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: Bindings::PlatformObject(realm)
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, m_entry_list(move(entry_list))
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{
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}
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PerformanceObserverEntryList::~PerformanceObserverEntryList() = default;
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void PerformanceObserverEntryList::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::PerformanceObserverEntryListPrototype>(realm, "PerformanceObserverEntryList"));
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}
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void PerformanceObserverEntryList::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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for (auto& entry : m_entry_list)
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visitor.visit(entry);
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}
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// https://www.w3.org/TR/performance-timeline/#dfn-filter-buffer-by-name-and-type
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ErrorOr<Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>>> filter_buffer_by_name_and_type(Vector<JS::NonnullGCPtr<PerformanceTimeline::PerformanceEntry>> const& buffer, Optional<String> name, Optional<String> type)
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{
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// 1. Let result be an initially empty list.
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Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>> result;
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// 2. For each PerformanceEntry entry in buffer, run the following steps:
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for (auto const& entry : buffer) {
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// 1. If type is not null and if type is not identical to entry's entryType attribute, continue to next entry.
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if (type.has_value() && type.value() != entry->entry_type())
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continue;
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// 2. If name is not null and if name is not identical to entry's name attribute, continue to next entry.
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if (name.has_value() && name.value() != entry->name())
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continue;
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// 3. append entry to result.
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TRY(result.try_append(entry));
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}
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// 3. Sort results's entries in chronological order with respect to startTime
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quick_sort(result, [](auto const& left_entry, auto const& right_entry) {
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return left_entry->start_time() < right_entry->start_time();
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});
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// 4. Return result.
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return result;
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}
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// https://w3c.github.io/performance-timeline/#dom-performanceobserverentrylist-getentries
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WebIDL::ExceptionOr<Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>>> PerformanceObserverEntryList::get_entries() const
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{
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// Returns a PerformanceEntryList object returned by filter buffer by name and type algorithm with this's entry list,
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// name and type set to null.
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return TRY_OR_THROW_OOM(vm(), filter_buffer_by_name_and_type(m_entry_list, /* name= */ Optional<String> {}, /* type= */ Optional<String> {}));
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}
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// https://w3c.github.io/performance-timeline/#dom-performanceobserverentrylist-getentriesbytype
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WebIDL::ExceptionOr<Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>>> PerformanceObserverEntryList::get_entries_by_type(String const& type) const
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{
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// Returns a PerformanceEntryList object returned by filter buffer by name and type algorithm with this's entry list,
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// name set to null, and type set to the method's input type parameter.
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return TRY_OR_THROW_OOM(vm(), filter_buffer_by_name_and_type(m_entry_list, /* name= */ Optional<String> {}, type));
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}
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// https://w3c.github.io/performance-timeline/#dom-performanceobserverentrylist-getentriesbyname
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WebIDL::ExceptionOr<Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>>> PerformanceObserverEntryList::get_entries_by_name(String const& name, Optional<String> type) const
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{
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// Returns a PerformanceEntryList object returned by filter buffer by name and type algorithm with this's entry list,
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// name set to the method input name parameter, and type set to null if optional entryType is omitted, or set to the
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// method's input type parameter otherwise.
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return TRY_OR_THROW_OOM(vm(), filter_buffer_by_name_and_type(m_entry_list, name, type));
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}
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}
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