Merge nucleic/sleek-thistle-egret-fyej into dev

2026-07-18 05:19:31 -07:00
commit b6be87b72d
677 changed files with 102939 additions and 0 deletions
@@ -0,0 +1,31 @@
+//! Resource utilities
+
+use crate::error;
+
+/// Returns the user and system CPU time used by the current process;
+/// expressed as a tuple containing user time and system time, in that order.
+pub fn get_self_user_and_system_time()
+-> Result<(std::time::Duration, std::time::Duration), error::Error> {
+    let usage = nix::sys::resource::getrusage(nix::sys::resource::UsageWho::RUSAGE_SELF)?;
+    Ok((
+        convert_rusage_time(usage.user_time()),
+        convert_rusage_time(usage.system_time()),
+    ))
+}
+
+/// Returns the user and system CPU time used by child processes; expressed
+/// as a tuple containing user time and system time, in that order.
+pub fn get_children_user_and_system_time()
+-> Result<(std::time::Duration, std::time::Duration), error::Error> {
+    let usage = nix::sys::resource::getrusage(nix::sys::resource::UsageWho::RUSAGE_CHILDREN)?;
+    Ok((
+        convert_rusage_time(usage.user_time()),
+        convert_rusage_time(usage.system_time()),
+    ))
+}
+
+const fn convert_rusage_time(time: nix::sys::time::TimeVal) -> std::time::Duration {
+    #[allow(clippy::cast_sign_loss)]
+    #[allow(clippy::cast_possible_truncation)]
+    std::time::Duration::new(time.tv_sec() as u64, time.tv_usec() as u32 * 1000)
+}