servo/components/compositing/tracing.rs
Euclid Ye 57fc569818
Remove Webdriver Server's access to Constellation (#38212)
`WebDriverCommandMsg::TakeScreenshot` was the last thing blocking us
from removing constellation access in webdriver server. Now we can
happily remove it.

Surprisingly, this reduces binary size by 185KB for release profile in
Windows. #37737 removes a net total of 300 lines, but only reduced 98KB.

Testing: No regression after testing.

Signed-off-by: Euclid Ye <euclid.ye@huawei.com>
2025-07-22 10:17:19 +00:00

59 lines
2.8 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::HitTest(..) => target!("HitTest"),
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"),
}
}
}
}