Interface Clock
public interface Clock
Used to measure absolute and relative time.
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Field Summary
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Method Summary
Modifier and TypeMethodDescriptionlongCurrent time from a monotonic clock source.longwallTime()Current wall time in milliseconds since the epoch.
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Field Details
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SYSTEM
Default, system clock.
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Method Details
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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
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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
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