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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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5
components/layout_2020/geom.rs
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@ -8,6 +8,7 @@ use std::fmt;
use std::ops::{Add, AddAssign, Neg, Sub, SubAssign};
use app_units::{Au, MAX_AU};
use malloc_size_of_derive::MallocSizeOf;
use style::Zero;
use style::logical_geometry::{BlockFlowDirection, Direction, InlineBaseDirection, WritingMode};
use style::values::computed::{
@ -28,7 +29,7 @@ pub type PhysicalSides<U> = euclid::SideOffsets2D<U, CSSPixel>;
pub type AuOrAuto = AutoOr<Au>;
pub type LengthPercentageOrAuto<'a> = AutoOr<&'a LengthPercentage>;
#[derive(Clone, Copy, PartialEq)]
#[derive(Clone, Copy, MallocSizeOf, PartialEq)]
pub struct LogicalVec2<T> {
pub inline: T,
pub block: T,
@ -950,7 +951,7 @@ impl Size<Au> {
/// Represents the sizing constraint that the preferred, min and max sizing properties
/// impose on one axis.
#[derive(Clone, Copy, Debug, PartialEq)]
#[derive(Clone, Copy, Debug, MallocSizeOf, PartialEq)]
pub(crate) enum SizeConstraint {
/// Represents a definite preferred size, clamped by minimum and maximum sizes (if any).
Definite(Au),