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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/clipboard_provider.rs
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@ -6,6 +6,7 @@ use base::id::WebViewId;
use constellation_traits::{ScriptToConstellationChan, ScriptToConstellationMessage};
use embedder_traits::EmbedderMsg;
use ipc_channel::ipc::channel;
use malloc_size_of_derive::MallocSizeOf;
/// A trait which abstracts access to the embedder's clipboard in order to allow unit
/// testing clipboard-dependent parts of `script`.
@ -16,6 +17,7 @@ pub trait ClipboardProvider {
fn set_text(&mut self, _: String);
}
#[derive(MallocSizeOf)]
pub(crate) struct EmbedderClipboardProvider {
pub constellation_sender: ScriptToConstellationChan,
pub webview_id: WebViewId,