Package de.iip_ecosphere.platform.support.metrics

Interface Clock

public interface Clock
Represents a clock.
Author:
Holger Eichelberger, SSE

  • Method Summary

    Modifier and Type
    Method
    Description
    long
    monotonicTime()
    Current time from a monotonic clock source.
    long
    wallTime()
    Current wall time in milliseconds since the epoch.

  • Method Details

    • wallTime

      long wallTime()
      Current wall time in milliseconds since the epoch. Typically equivalent to System.currentTimeMillis. Should not be used to determine durations. Used for timestamping metrics being pushed to a monitoring system or for determination of step boundaries.
      Returns:
      Wall time in milliseconds

    • monotonicTime

      long monotonicTime()
      Current time from a monotonic clock source. The value is only meaningful when compared with another snapshot to determine the elapsed time for an operation. The difference between two samples will have a unit of nanoseconds. The returned value is typically equivalent to System.nanoTime.
      Returns:
      Monotonic time in nanoseconds