servo/components/compositing/tracing.rs
Sam 8beef6c21f
compositor: Allow canvas to upload rendered contents asynchronously (#37776)
Adds epoch to each WR image op command that is sent to compositor. The
renderer now has a `FrameDelayer` data structure that is responsible for
tracking when a frame is ready to be displayed. When asking canvases to
update their rendering, they are given an optional `Epoch` which denotes
the `Document`'s canvas epoch. When all image updates for that `Epoch`
are seen in the renderer, the frame can be displayed.

Testing: Existing WPT tests
Fixes: #35733

Signed-off-by: sagudev <16504129+sagudev@users.noreply.github.com>
Signed-off-by: Martin Robinson <mrobinson@igalia.com>
Co-authored-by: Martin Robinson <mrobinson@igalia.com>
2025-08-29 10:04:41 +00:00

60 lines
2.9 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
/// Log an event from constellation at trace level.
/// - To disable tracing: RUST_LOG='compositor<constellation@=off'
/// - To enable tracing: RUST_LOG='compositor<constellation@'
macro_rules! trace_msg_from_constellation {
// This macro only exists to put the docs in the same file as the target prefix,
// so the macro definition is always the same.
($event:expr, $($rest:tt)+) => {
::log::trace!(target: $crate::tracing::LogTarget::log_target(&$event), $($rest)+)
};
}
/// Get the log target for an event, as a static string.
pub(crate) trait LogTarget {
fn log_target(&self) -> &'static str;
}
mod from_constellation {
use super::LogTarget;
macro_rules! target {
($($name:literal)+) => {
concat!("compositor<constellation@", $($name),+)
};
}
impl LogTarget for compositing_traits::CompositorMsg {
fn log_target(&self) -> &'static str {
match self {
Self::ChangeRunningAnimationsState(..) => target!("ChangeRunningAnimationsState"),
Self::CreateOrUpdateWebView(..) => target!("CreateOrUpdateWebView"),
Self::RemoveWebView(..) => target!("RemoveWebView"),
Self::TouchEventProcessed(..) => target!("TouchEventProcessed"),
Self::IsReadyToSaveImageReply(..) => target!("IsReadyToSaveImageReply"),
Self::SetThrottled(..) => target!("SetThrottled"),
Self::NewWebRenderFrameReady(..) => target!("NewWebRenderFrameReady"),
Self::PipelineExited(..) => target!("PipelineExited"),
Self::LoadComplete(..) => target!("LoadComplete"),
Self::SendInitialTransaction(..) => target!("SendInitialTransaction"),
Self::SendScrollNode(..) => target!("SendScrollNode"),
Self::SendDisplayList { .. } => target!("SendDisplayList"),
Self::GenerateFrame { .. } => target!("GenerateFrame"),
Self::GenerateImageKey(..) => target!("GenerateImageKey"),
Self::UpdateImages(..) => target!("UpdateImages"),
Self::GenerateFontKeys(..) => target!("GenerateFontKeys"),
Self::AddFont(..) => target!("AddFont"),
Self::AddSystemFont(..) => target!("AddSystemFont"),
Self::AddFontInstance(..) => target!("AddFontInstance"),
Self::RemoveFonts(..) => target!("RemoveFonts"),
Self::CollectMemoryReport(..) => target!("CollectMemoryReport"),
Self::Viewport(..) => target!("Viewport"),
Self::GenerateImageKeysForPipeline(..) => target!("GenerateImageKeysForPipeline"),
Self::DelayNewFrameForCanvas(..) => target!("DelayFramesForCanvas"),
}
}
}
}