feat(timeout): add benchmarking support with divan

.github/workflows/benchmarks.yml

@@ -40,7 +40,8 @@ jobs:
           - { package: uu_shuf }
           - { package: uu_sort }
           - { package: uu_split }
-          - { package: uu_tsort }
+          - { package: uu_timeout }
+          - { package: uu_tsort } 
           - { package: uu_unexpand }
           - { package: uu_uniq }
           - { package: uu_wc }

src/uu/timeout/Cargo.toml

@@ -27,3 +27,11 @@ fluent = { workspace = true }
 [[bin]]
 name = "timeout"
 path = "src/main.rs"
+
+[dev-dependencies]
+divan = { workspace = true }
+uucore = { workspace = true, features = ["benchmark"] }
+
+[[bench]]
+name = "timeout_bench"
+harness = false

src/uu/timeout/benches/timeout_bench.rs

@@ -0,0 +1,37 @@
+// This file is part of the uutils coreutils package.
+//
+// For the full copyright and license information, please view the LICENSE
+// file that was distributed with this source code.
+
+#[cfg(unix)]
+use divan::{Bencher, black_box};
+#[cfg(unix)]
+use uu_timeout::uumain;
+#[cfg(unix)]
+use uucore::benchmark::run_util_function;
+
+#[cfg(unix)]
+fn bench_timeout(bencher: Bencher, args: &[&str]) {
+    bencher.bench(|| {
+        black_box(run_util_function(uumain, args));
+    });
+}
+
+/// Benchmark the fast path where the command exits immediately.
+#[cfg(unix)]
+#[divan::bench]
+fn timeout_quick_exit(bencher: Bencher) {
+    bench_timeout(bencher, &["0.02", "true"]);
+}
+
+/// Benchmark a command that runs longer than the threshold and receives the default signal.
+#[cfg(unix)]
+#[divan::bench]
+fn timeout_enforced(bencher: Bencher) {
+    bench_timeout(bencher, &["0.02", "sleep", "0.2"]);
+}
+
+fn main() {
+    #[cfg(unix)]
+    divan::main();
+}