marble 16.0.2

garbage-collecting on-disk object store
Documentation 
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/// This function is useful for inducing random jitter into
/// our atomic operations, shaking out more possible
/// interleavings quickly. It gets fully eliminated by the
/// compiler in non-test code.
pub fn debug_delay() {
    #[cfg(feature = "runtime_validation")]
    {
        use std::thread;
        use std::time::Duration;

        use rand::{thread_rng, Rng};

        let mut rng = thread_rng();

        match rng.gen_range(0..100) {
            0..=90 => thread::yield_now(),
            _ => thread::sleep(Duration::from_millis(5)),
        }
    }
}