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Add perfetto tracing events to fonts (#33436)

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* trace fonts

Co-authored-by: Delan Azabani <dazabani@igalia.com>
Signed-off-by: atbrakhi <atbrakhi@igalia.com>

* review fix

Co-authored-by: Delan Azabani <dazabani@igalia.com>
Signed-off-by: atbrakhi <atbrakhi@igalia.com>

---------

Signed-off-by: atbrakhi <atbrakhi@igalia.com>
Co-authored-by: Delan Azabani <dazabani@igalia.com>
This commit is contained in:
atbrakhi 2024-09-16 11:04:58 +02:00 • committed by GitHub
parent b12cebd1ac
commit 236cae9ce5
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GPG key ID: B5690EEEBB952194
4 changed files with 24 additions and 1 deletions
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1
components/fonts/Cargo.toml
View file

@ -41,6 +41,7 @@ servo_url = { path = "../url" }
smallvec = { workspace = true, features = ["union"] }
surfman = { workspace = true }
style = { workspace = true }
tracing = { workspace = true }
unicode-bidi = { workspace = true, features = ["with_serde"] }
unicode-properties = { workspace = true }
unicode-script = { workspace = true }

15
components/fonts/font_cache_thread.rs
View file

@ -23,6 +23,7 @@ use style::values::computed::font::{
};
use style::values::computed::{FontStretch, FontWeight};
use style::values::specified::FontStretch as SpecifiedFontStretch;
use tracing::{span, Level};
use webrender_api::{FontInstanceFlags, FontInstanceKey, FontKey};
use webrender_traits::WebRenderFontApi;
@ -102,12 +103,19 @@ struct FontCache {
}
impl FontCache {
#[tracing::instrument(skip(self), fields(servo_profiling = true))]
fn run(&mut self) {
loop {
let msg = self.port.recv().unwrap();
match msg {
Command::GetFontTemplates(descriptor_to_match, font_family, result) => {
let span = span!(
Level::TRACE,
"Command::GetFontTemplates",
servo_profiling = true
);
let _span = span.enter();
let templates =
self.find_font_templates(descriptor_to_match.as_ref(), &font_family);
debug!("Found templates for descriptor {descriptor_to_match:?}: ");
@ -141,6 +149,12 @@ impl FontCache {
.font_data
.entry(identifier)
.or_insert_with(|| font_template.data());
let span = span!(
Level::TRACE,
"GetFontTemplates send",
servo_profiling = true
);
let _span = span.enter();
let _ = bytes_sender.send(data);
}
},
@ -186,6 +200,7 @@ impl FontCache {
});
}
#[tracing::instrument(skip(self), fields(servo_profiling = true))]
fn find_font_templates(
&mut self,
descriptor_to_match: Option<&FontDescriptor>,