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LibWeb: Stop putting the FormattingState nodes in a slow hash map

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Instead, put them in a Vector<OwnPtr<NodeState>>. Each layout node
has a unique index into the vector. It's a simple serial ID assigned
during layout tree construction. Every new layout restarts the sequence
at 0 for the next ICB.

This is a huge layout speed improvement on all content.
This commit is contained in:
Andreas Kling 2022-07-11 17:12:58 +02:00
parent f6a97ff7d5
commit 0cacaf025d
6 changed files with 45 additions and 45 deletions
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5
Userland/Libraries/LibWeb/DOM/Document.h
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@ -61,6 +61,9 @@ public:
virtual ~Document() override;
size_t next_layout_node_serial_id(Badge<Layout::Node>) { return m_next_layout_node_serial_id++; }
size_t layout_node_count() const { return m_next_layout_node_serial_id; }
String cookie(Cookie::Source = Cookie::Source::NonHttp);
void set_cookie(String const&, Cookie::Source = Cookie::Source::NonHttp);
@ -391,6 +394,8 @@ private:
unsigned m_referencing_node_count { 0 };
size_t m_next_layout_node_serial_id { 0 };
OwnPtr<CSS::StyleComputer> m_style_computer;
RefPtr<CSS::StyleSheetList> m_style_sheets;
RefPtr<Node> m_hovered_node;