Method drop

cranelift/codegen/src/timing.rs:292–305

(&mut self)

    /// Dropping a timing token indicated the end of the pass.
    impl Drop for DefaultTimingToken {
        fn drop(&mut self) {
            let now = monotonic_instant();
            let duration = now.duration_since(self.start);
            log::debug!("timing: Ending {}: {}ms", self.pass, duration.as_millis());
            let old_cur = CURRENT_PASS.with(|p| p.replace(self.prev));
            assert_eq!(self.pass, old_cur, "Timing tokens dropped out of order");
            PASS_TIME.with(|rc| {
                let mut table = rc.borrow_mut();
                table.pass[self.pass.idx()].total += duration;
                if let Some(parent) = table.pass.get_mut(self.prev.idx()) {
                    parent.child += duration;
                }
            })
        }
    }
}