Class ClockErrorBoundV3

clock-bound/src/shm.rs:586–663

#[repr(C)]
#[derive(Debug, Copy, Clone, PartialEq)]
pub struct ClockErrorBoundV3 {
    /// TSC counter value identifying this clock update.
    ///
    /// The TSC counter timestamp marking the time the clock and the clock error bound where
    /// updated last. It represents the same instant as `as_of`.
    as_of_tsc: u64,

    /// Timestamp of this clock update.
    ///
    /// The nanosecond resolution timestamp marking the time the clock and the clock error bound
    /// where updated last. This timestamp is derived from `as_of_tsc`.
    as_of: TimeSpec,

    /// Time after which this clock update is void.
    ///
    /// The nanosecond timestamp beyond which the bound on clock error should not be trusted. This
    /// is a useful signal that the communication with the synchronization daemon is has failed,
    /// for example.
    void_after: TimeSpec,

    /// Oscillator period estimate.
    ///
    /// The period of the oscillator, represented as a fractional part of a second.
    period_frac: u64,

    /// Oscillator period estimate error.
    ///
    /// The error on the estimate of the period of the oscillator, in ppb, represented as a
    /// fractional part of a second.
    period_err_frac: u64,

    /// Clock Error Bound
    ///
    /// An absolute upper bound on the accuracy of the feed-forward synchronization clock with
    /// regards to true time at the instant represented by `as_of` and `as_of_tsc`.
    bound_nsec: i64,

    /// Disruption marker.
    ///
    /// This value is incremented (by an unspecified delta) each time the clock has been disrupted.
    /// This count value is specific to a particular VM/EC2 instance.
    disruption_marker: u64,

    /// Maximum drift rate in part-per-billion.
    ///
    /// Maximum drift rate of the clock between updates of the synchronization daemon. The value
    /// stored in `bound_nsec` should increase by the following to account for the clock drift
    /// since `bound_nsec` was computed:
    /// `bound_nsec += max_drift_ppb * (now - as_of)`
    max_drift_ppb: u32,

    /// Clock status.
    ///
    /// The synchronization daemon status indicates whether the daemon is synchronized,
    /// free-running, etc.
    clock_status: ClockStatus,

    /// Clock disruption support enabled flag.