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

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>
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Rahul Menon 2025-08-21 02:21:59 -05:00 committed by GitHub
parent 634c1897cf
commit 9cd019403f
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7 changed files with 53 additions and 23 deletions

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@ -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 }