fn get_limits()

in src/rt_linux.rs [116:153]
33 lines of code
4 McCabe index (conditional complexity)

fn get_limits() -> Result<(i64, u64, libc::rlimit), AudioThreadPriorityError> {
    let c = Connection::get_private(BusType::System)?;

    let p = Props::new(
        &c,
        "org.freedesktop.RealtimeKit1",
        "/org/freedesktop/RealtimeKit1",
        "org.freedesktop.RealtimeKit1",
        DBUS_SOCKET_TIMEOUT,
    );
    let mut current_limit = libc::rlimit {
        rlim_cur: 0,
        rlim_max: 0,
    };

    let max_prio = item_as_i64(p.get("MaxRealtimePriority")?)?;
    if max_prio < 0 {
        return Err(AudioThreadPriorityError::new(
            "invalid negative MaxRealtimePriority",
        ));
    }

    let max_rttime = item_as_i64(p.get("RTTimeUSecMax")?)?;
    if max_rttime < 0 {
        return Err(AudioThreadPriorityError::new(
            "invalid negative RTTimeUSecMax",
        ));
    }

    if unsafe { libc::getrlimit(libc::RLIMIT_RTTIME, &mut current_limit) } < 0 {
        return Err(AudioThreadPriorityError::new_with_inner(
            "getrlimit",
            Box::new(OSError::last_os_error()),
        ));
    }

    Ok((max_prio, (max_rttime as u64), current_limit))
}