fn maybe_warn_about_ordering()

in src/sync/atomic/mod.rs [71:98]

• 25 lines of code
• 7 McCabe index (conditional complexity)

fn maybe_warn_about_ordering(order: Ordering) {
    use ansi_term::Colour;

    #[allow(clippy::collapsible_if)]
    if order != Ordering::SeqCst {
        if PRINTED_ORDERING_WARNING
            .compare_exchange(false, true, Ordering::Relaxed, Ordering::Relaxed)
            .is_ok()
        {
            if std::env::var("SHUTTLE_SILENCE_ORDERING_WARNING").is_ok() {
                return;
            }

            if ExecutionState::with(|state| state.config.silence_atomic_ordering_warning) {
                return;
            }

            eprintln!(
                "{}: Shuttle only correctly models SeqCst atomics and treats all other Orderings \
                as if they were SeqCst. Bugs caused by weaker orderings like {:?} may be missed. \
                See https://docs.rs/shuttle/*/shuttle/sync/atomic/index.html#warning-about-relaxed-behaviors \
                for details or to disable this warning.",
                Colour::Yellow.normal().paint("WARNING"),
                order
            );
        }
    }
}