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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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9
components/layout/layout_impl.rs
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@ -4,9 +4,8 @@
#![allow(unsafe_code)]
use std::cell::{Cell, LazyCell, RefCell};
use std::collections::{HashMap, HashSet};
use std::ffi::c_void;
use std::cell::{Cell, RefCell};
use std::collections::HashMap;
use std::fmt::Debug;
use std::process;
use std::sync::{Arc, LazyLock};
@ -95,10 +94,6 @@ use crate::{BoxTree, FragmentTree};
static STYLE_THREAD_POOL: Mutex<&style::global_style_data::STYLE_THREAD_POOL> =
Mutex::new(&style::global_style_data::STYLE_THREAD_POOL);
thread_local!(static SEEN_POINTERS: LazyCell<RefCell<HashSet<*const c_void>>> = const {
LazyCell::new(|| RefCell::new(HashSet::new()))
});
/// A CSS file to style the user agent stylesheet.
static USER_AGENT_CSS: &[u8] = include_bytes!("./stylesheets/user-agent.css");