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script: Measure heap usage of various ignored fields (#38791)

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These changes allow using MallocSizeOf/`#[conditional_malloc_size_of]`
on WebIDL callback values, and then fix a grab bag of places in the
script crate that previously ignored those values. There are also some
commits removing ignored fields that involved Arc/Rc that are not WebIDL
callbacks, since they are now easier to support with the
`#[conditional_malloc_size_of]` attribute.

Testing: Manual testing on about:memory for servo.org.

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>
This commit is contained in:
Josh Matthews 2025-08-20 04:43:58 -04:00 • committed by GitHub
parent 604b6ea26d
commit 636e7211e0
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16 changed files with 44 additions and 38 deletions
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components/script_bindings/codegen/codegen.py
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@ -8057,7 +8057,7 @@ class CGCallback(CGClass):
constructors=self.getConstructors(),
methods=realMethods,
templateSpecialization=['D: DomTypes'],
decorators="#[derive(JSTraceable, PartialEq)]\n"
decorators="#[derive(JSTraceable, MallocSizeOf, PartialEq)]\n"
"#[cfg_attr(crown, allow(crown::unrooted_must_root))]\n"
"#[cfg_attr(crown, crown::unrooted_must_root_lint::allow_unrooted_interior)]")