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layout: Report memory usage for fragment and box trees. (#36553)

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Add memory reporter integration for the fragment and box trees that are
persisted in the layout thread.

Testing: Looked at the numbers for https://servo.org and
https://html.spec.whatwg.org/. The former was very small, but the latter
was 700mb.

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>
This commit is contained in:
Josh Matthews 2025-04-18 16:05:15 -04:00 • committed by GitHub
parent add8c51f47
commit c787688afc
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33 changed files with 230 additions and 69 deletions
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3
components/layout_2020/lib.rs
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@ -32,6 +32,7 @@ use app_units::Au;
pub use cell::ArcRefCell;
pub use flow::BoxTree;
pub use fragment_tree::FragmentTree;
use malloc_size_of_derive::MallocSizeOf;
use style::logical_geometry::WritingMode;
use style::properties::ComputedValues;
use style::values::computed::TextDecorationLine;
@ -113,7 +114,7 @@ impl<'a> From<&'_ DefiniteContainingBlock<'a>> for IndefiniteContainingBlock {
}
}
#[derive(Clone, Debug)]
#[derive(Clone, Debug, MallocSizeOf)]
pub(crate) struct ContainingBlockSize {
inline: Au,
block: SizeConstraint,