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Various memory measurement improvements (#36834)

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The two significant changes here are 1) a commit that frees memory used
to perform memory reporting once the reporting is complete, 2) memory
reporting for the system font service. There are various other commits
that remove `#[ignore_malloc_size_of]` attributes for data that we are
now able to measure, but they do not significantly change our
measurements when testing servo.org.

Testing: Comparing the output of about:memory on servo.org.

---------

Signed-off-by: Josh Matthews <josh@joshmatthews.net>
This commit is contained in:
Josh Matthews 2025-05-07 00:00:12 -04:00 • committed by GitHub
parent e9f364ef51
commit ba8f923201
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GPG key ID: B5690EEEBB952194
19 changed files with 135 additions and 49 deletions
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18
components/fonts/font_template.rs
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@ -3,7 +3,7 @@
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use std::fmt::{Debug, Error, Formatter};
use std::ops::RangeInclusive;
use std::ops::{Deref, RangeInclusive};
use std::sync::Arc;
use atomic_refcell::AtomicRefCell;
@ -20,7 +20,21 @@ use crate::system_font_service::{
};
/// A reference to a [`FontTemplate`] with shared ownership and mutability.
pub type FontTemplateRef = Arc<AtomicRefCell<FontTemplate>>;
#[derive(Clone, Debug, MallocSizeOf)]
pub struct FontTemplateRef(#[conditional_malloc_size_of] Arc<AtomicRefCell<FontTemplate>>);
impl FontTemplateRef {
pub fn new(template: FontTemplate) -> Self {
Self(Arc::new(AtomicRefCell::new(template)))
}
}
impl Deref for FontTemplateRef {
type Target = Arc<AtomicRefCell<FontTemplate>>;
fn deref(&self) -> &Self::Target {
&self.0
}
}
/// Describes how to select a font from a given family. This is very basic at the moment and needs
/// to be expanded or refactored when we support more of the font styling parameters.