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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. :^)
60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
/*
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* Copyright (c) 2021, 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 <LibJS/Heap/Heap.h>
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#include <LibJS/Runtime/Error.h>
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#include <LibWeb/DOM/StaticNodeList.h>
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namespace Web::DOM {
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JS_DEFINE_ALLOCATOR(StaticNodeList);
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JS::NonnullGCPtr<NodeList> StaticNodeList::create(JS::Realm& realm, Vector<JS::Handle<Node>> static_nodes)
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{
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return realm.heap().allocate<StaticNodeList>(realm, realm, move(static_nodes));
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}
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StaticNodeList::StaticNodeList(JS::Realm& realm, Vector<JS::Handle<Node>> static_nodes)
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: NodeList(realm)
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{
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for (auto& node : static_nodes)
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m_static_nodes.append(*node);
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}
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StaticNodeList::~StaticNodeList() = default;
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void StaticNodeList::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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for (auto& node : m_static_nodes)
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visitor.visit(node);
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}
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// https://dom.spec.whatwg.org/#dom-nodelist-length
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u32 StaticNodeList::length() const
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{
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return m_static_nodes.size();
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}
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// https://dom.spec.whatwg.org/#dom-nodelist-item
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Node const* StaticNodeList::item(u32 index) const
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{
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// The item(index) method must return the indexth node in the collection. If there is no indexth node in the collection, then the method must return null.
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if (index >= m_static_nodes.size())
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return nullptr;
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return m_static_nodes[index];
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}
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// https://dom.spec.whatwg.org/#ref-for-dfn-supported-property-indices
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bool StaticNodeList::is_supported_property_index(u32 index) const
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{
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// The object’s supported property indices are the numbers in the range zero to one less than the number of nodes represented by the collection.
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// If there are no such elements, then there are no supported property indices.
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return index < m_static_nodes.size();
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}
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}
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