diff options
Diffstat (limited to 'winit/src/profiler.rs')
-rw-r--r-- | winit/src/profiler.rs | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/winit/src/profiler.rs b/winit/src/profiler.rs deleted file mode 100644 index 7031507a..00000000 --- a/winit/src/profiler.rs +++ /dev/null @@ -1,101 +0,0 @@ -//! A simple profiler for Iced. -use std::ffi::OsStr; -use std::path::Path; -use std::time::Duration; -use tracing_subscriber::prelude::*; -use tracing_subscriber::Registry; -#[cfg(feature = "chrome-trace")] -use { - tracing_chrome::FlushGuard, - tracing_subscriber::fmt::{format::DefaultFields, FormattedFields}, -}; - -/// Profiler state. This will likely need to be updated or reworked when adding new tracing backends. -#[allow(missing_debug_implementations)] -pub struct Profiler { - #[cfg(feature = "chrome-trace")] - /// [`FlushGuard`] must not be dropped until the application scope is dropped for accurate tracing. - _guard: FlushGuard, -} - -impl Profiler { - /// Initializes the [`Profiler`]. - pub fn init() -> Self { - // Registry stores the spans & generates unique span IDs - let subscriber = Registry::default(); - - let default_path = Path::new(env!("CARGO_MANIFEST_DIR")); - let curr_exe = std::env::current_exe() - .unwrap_or_else(|_| default_path.to_path_buf()); - let out_dir = curr_exe.parent().unwrap_or(default_path).join("traces"); - - #[cfg(feature = "chrome-trace")] - let (chrome_layer, guard) = { - let mut layer = tracing_chrome::ChromeLayerBuilder::new(); - - // Optional configurable env var: CHROME_TRACE_FILE=/path/to/trace_file/file.json, - // for uploading to chrome://tracing (old) or ui.perfetto.dev (new). - if let Ok(path) = std::env::var("CHROME_TRACE_FILE") { - layer = layer.file(path); - } else if std::fs::create_dir_all(&out_dir).is_ok() { - let time = std::time::SystemTime::now() - .duration_since(std::time::UNIX_EPOCH) - .unwrap_or(Duration::from_millis(0)) - .as_millis(); - - let curr_exe_name = curr_exe - .file_name() - .unwrap_or_else(|| OsStr::new("trace")) - .to_str() - .unwrap_or("trace"); - - let path = - out_dir.join(format!("{curr_exe_name}_trace_{time}.json")); - - layer = layer.file(path); - } else { - layer = layer.file(env!("CARGO_MANIFEST_DIR")) - } - - let (chrome_layer, guard) = layer - .name_fn(Box::new(|event_or_span| match event_or_span { - tracing_chrome::EventOrSpan::Event(event) => { - event.metadata().name().into() - } - tracing_chrome::EventOrSpan::Span(span) => { - if let Some(fields) = span - .extensions() - .get::<FormattedFields<DefaultFields>>() - { - format!( - "{}: {}", - span.metadata().name(), - fields.fields.as_str() - ) - } else { - span.metadata().name().into() - } - } - })) - .build(); - - (chrome_layer, guard) - }; - - let fmt_layer = tracing_subscriber::fmt::Layer::default(); - let subscriber = subscriber.with(fmt_layer); - - #[cfg(feature = "chrome-trace")] - let subscriber = subscriber.with(chrome_layer); - - // create dispatcher which will forward span events to the subscriber - // this can only be set once or will panic - tracing::subscriber::set_global_default(subscriber) - .expect("Tracer could not set the global default subscriber."); - - Profiler { - #[cfg(feature = "chrome-trace")] - _guard: guard, - } - } -} |