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layout: Measure stacking context tree in layout thread memory report (#38762)

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Measures the memory usage of the stacking context tree in the memory
report of the layout thread by adding `MallocSizeOf` to
`StackingContextTree` and all the types required for that. Also requires
adding `MallocSizeOf` to some webrender types.

Testing: Manually looked at about:memory
<img width="636" height="241" alt="image"
src="https://github.com/user-attachments/assets/6bf9d65a-0bf0-4a99-99b5-ddedba3269c1"
/>

Fixes: https://github.com/servo/servo/issues/38725

---------

Signed-off-by: Rahul Menon <menonrahul02@gmail.com>
This commit is contained in:
Rahul Menon 2025-08-21 02:21:59 -05:00 • committed by GitHub
parent 634c1897cf
commit 9cd019403f
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GPG key ID: B5690EEEBB952194
7 changed files with 53 additions and 23 deletions
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1
components/malloc_size_of/Cargo.toml
View file

@ -39,5 +39,6 @@ unicode-script = { workspace = true }
url = { workspace = true }
urlpattern = { workspace = true }
uuid = { workspace = true }
webrender = { workspace = true }
webrender_api = { workspace = true }
wr_malloc_size_of = { workspace = true }

15
components/malloc_size_of/lib.rs
View file

@ -643,6 +643,12 @@ impl<T: MallocSizeOf, U> MallocSizeOf for euclid::Point2D<T, U> {
}
}
impl<T: MallocSizeOf, U> MallocSizeOf for euclid::Box2D<T, U> {
fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize {
self.min.size_of(ops) + self.max.size_of(ops)
}
}
impl<T: MallocSizeOf, U> MallocSizeOf for euclid::Rect<T, U> {
fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize {
self.origin.size_of(ops) + self.size.size_of(ops)
@ -826,7 +832,9 @@ malloc_size_of_is_webrender_malloc_size_of!(webrender_api::BorderRadius);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::BorderStyle);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::BoxShadowClipMode);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::ColorF);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::Epoch);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::ExtendMode);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::ExternalScrollId);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::FontKey);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::FontInstanceKey);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::GlyphInstance);
@ -836,8 +844,14 @@ malloc_size_of_is_webrender_malloc_size_of!(webrender_api::ImageRendering);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::LineStyle);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::MixBlendMode);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::NormalBorder);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::PipelineId);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::ReferenceFrameKind);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::RepeatMode);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::FontVariation);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::SpatialId);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::StickyOffsetBounds);
malloc_size_of_is_webrender_malloc_size_of!(webrender_api::TransformStyle);
malloc_size_of_is_webrender_malloc_size_of!(webrender::FastTransform<webrender_api::units::LayoutPixel,webrender_api::units::LayoutPixel>);
macro_rules! malloc_size_of_is_stylo_malloc_size_of(
($($ty:ty),+) => (
@ -892,6 +906,7 @@ malloc_size_of_is_stylo_malloc_size_of!(style::attr::AttrIdentifier);
malloc_size_of_is_stylo_malloc_size_of!(style::attr::AttrValue);
malloc_size_of_is_stylo_malloc_size_of!(style::color::AbsoluteColor);
malloc_size_of_is_stylo_malloc_size_of!(style::computed_values::font_variant_caps::T);
malloc_size_of_is_stylo_malloc_size_of!(style::computed_values::text_decoration_style::T);
malloc_size_of_is_stylo_malloc_size_of!(style::dom::OpaqueNode);
malloc_size_of_is_stylo_malloc_size_of!(style::invalidation::element::restyle_hints::RestyleHint);
malloc_size_of_is_stylo_malloc_size_of!(style::logical_geometry::WritingMode);