introduce re_tracing

Cargo.toml

@@ -47,6 +47,7 @@ re_smart_channel = { path = "crates/re_smart_channel", version = "0.7.0-alpha.0"
 re_string_interner = { path = "crates/re_string_interner", version = "0.7.0-alpha.0", default-features = false }
 re_tensor_ops = { path = "crates/re_tensor_ops", version = "0.7.0-alpha.0", default-features = false }
 re_time_panel = { path = "crates/re_time_panel", version = "=0.7.0-alpha.0", default-features = false }
+re_tracing = { path = "crates/re_tracing", version = "0.7.0-alpha.0", default-features = false }
 re_tuid = { path = "crates/re_tuid", version = "0.7.0-alpha.0", default-features = false }
 re_ui = { path = "crates/re_ui", version = "0.7.0-alpha.0", default-features = false }
 re_viewer = { path = "crates/re_viewer", version = "0.7.0-alpha.0", default-features = false }

crates/re_tracing/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "re_tracing"
+authors.workspace = true
+description = "Helpers for tracing/spans/flamegraphs and such."
+edition.workspace = true
+homepage.workspace = true
+include.workspace = true
+license.workspace = true
+publish = true
+readme = "README.md"
+repository.workspace = true
+rust-version.workspace = true
+version.workspace = true
+
+
+[package.metadata.docs.rs]
+all-features = true
+
+
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
+puffin.workspace = true

crates/re_tracing/README.md

@@ -0,0 +1,10 @@
+# re_tracing
+
+Part of the [`rerun`](https://github.com/rerun-io/rerun) family of crates.
+
+[![Latest version](https://img.shields.io/crates/v/re_tracing.svg)](https://crates.io/crates/re_tracing)
+[![Documentation](https://docs.rs/re_tracing/badge.svg)](https://docs.rs/re_tracing)
+![MIT](https://img.shields.io/badge/license-MIT-blue.svg)
+![Apache](https://img.shields.io/badge/license-Apache-blue.svg)
+
+Helpers for tracing/spans/flamegraphs and such.

crates/re_tracing/src/lib.rs

@@ -0,0 +1,23 @@
+//! Helpers for tracing/spans/flamegraphs and such.
+
+pub mod reexports {
+    pub use puffin;
+}
+
+/// Wrapper around puffin profiler on native, no-op on wasm.
+#[macro_export]
+macro_rules! profile_function {
+    ($($arg: tt)*) => {
+        #[cfg(not(target_arch = "wasm32"))]
+        $crate::reexports::puffin::profile_function!($($arg)*);
+    };
+}
+
+/// Wrapper around puffin profiler on native, no-op on wasm.
+#[macro_export]
+macro_rules! profile_scope {
+    ($($arg: tt)*) => {
+        #[cfg(not(target_arch = "wasm32"))]
+        $crate::reexports::puffin::profile_scope!($($arg)*);
+    };
+}