Mirrors/servo
1
0
Fork 0
mirror of https://github.com/servo/servo.git synced 2025-09-30 08:39:16 +01:00
Code Issues Projects Releases Packages Wiki Activity

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

Browse source 
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
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
7 changed files with 53 additions and 23 deletions
Download patch file Download diff file Expand all files Collapse all files

7
components/layout/display_list/clip.rs
View file

@ -4,6 +4,7 @@
use app_units::Au;
use base::id::ScrollTreeNodeId;
use malloc_size_of_derive::MallocSizeOf;
use style::values::computed::basic_shape::{BasicShape, ClipPath};
use style::values::computed::length_percentage::NonNegativeLengthPercentage;
use style::values::computed::position::Position;
@ -16,7 +17,7 @@ use super::{BuilderForBoxFragment, compute_margin_box_radius, normalize_radii};
/// An identifier for a clip used during StackingContextTree construction. This is a simple index in
/// a [`ClipStore`]s vector of clips.
#[derive(Clone, Copy, Debug, Eq, Hash, PartialEq)]
#[derive(Clone, Copy, Debug, Eq, Hash, MallocSizeOf, PartialEq)]
pub(crate) struct ClipId(pub usize);
impl ClipId {
@ -27,7 +28,7 @@ impl ClipId {
/// All the information needed to create a clip on a WebRender display list. These are created at
/// two times: during `StackingContextTree` creation and during WebRender display list construction.
/// Only the former are stored in a [`ClipStore`].
#[derive(Clone)]
#[derive(Clone, MallocSizeOf)]
pub(crate) struct Clip {
pub id: ClipId,
pub radii: BorderRadius,
@ -39,7 +40,7 @@ pub(crate) struct Clip {
/// A simple vector of [`Clip`] that is built during `StackingContextTree` construction.
/// These are later turned into WebRender clips and clip chains during WebRender display
/// list construction.
#[derive(Clone, Default)]
#[derive(Clone, Default, MallocSizeOf)]
pub(crate) struct StackingContextTreeClipStore(pub Vec<Clip>);
impl StackingContextTreeClipStore {