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compositing: Add memory reporter for WebRender. (#36557)

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This adds a memory reporter for WebRender's memory usage. I seeded it
with a couple entries that looked reasonable based on
https://searchfox.org/mozilla-central/rev/2c71f1e9b5947612abdc16b64008162c58c1b9d3/gfx/thebes/gfxPlatform.cpp#722-738.

Testing: Verified that new numbers appear in about:memory for servo.org.
The new images category is surprisingly large (40mb).

Signed-off-by: Josh Matthews <josh@joshmatthews.net>
This commit is contained in:
Josh Matthews 2025-04-16 09:14:04 -04:00 • committed by GitHub
parent afe98e9e1e
commit af000d6c91
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9 changed files with 98 additions and 8 deletions
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11
components/shared/compositing/lib.rs
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@ -29,6 +29,7 @@ use display_list::CompositorDisplayListInfo;
use embedder_traits::{CompositorHitTestResult, ScreenGeometry};
use euclid::default::Size2D as UntypedSize2D;
use ipc_channel::ipc::{self, IpcSharedMemory};
use profile_traits::mem::{OpaqueSender, ReportsChan};
use serde::{Deserialize, Serialize};
use servo_geometry::{DeviceIndependentIntRect, DeviceIndependentIntSize};
use webrender_api::units::{DevicePoint, LayoutPoint, TexelRect};
@ -50,6 +51,12 @@ pub struct CompositorProxy {
pub event_loop_waker: Box<dyn EventLoopWaker>,
}
impl OpaqueSender<CompositorMsg> for CompositorProxy {
fn send(&self, message: CompositorMsg) {
CompositorProxy::send(self, message)
}
}
impl CompositorProxy {
pub fn send(&self, msg: CompositorMsg) {
if let Err(err) = self.sender.send(msg) {
@ -154,6 +161,10 @@ pub enum CompositorMsg {
/// Get the available screen size (without toolbars and docks) for the screen
/// the client window inhabits.
GetAvailableScreenSize(WebViewId, IpcSender<DeviceIndependentIntSize>),
/// Measure the current memory usage associated with the compositor.
/// The report must be sent on the provided channel once it's complete.
CollectMemoryReport(ReportsChan),
}
impl Debug for CompositorMsg {