org.apache.flink.util.clock

Class SystemClock

java.lang.Object

org.apache.flink.util.clock.Clock

org.apache.flink.util.clock.SystemClock

All Implemented Interfaces:

RelativeClock

@PublicEvolving
public final class SystemClock
extends Clock

A clock that returns the time of the system / process.

This clock uses System.currentTimeMillis() for absolute time and System.nanoTime() for relative time.

This SystemClock exists as a singleton instance.

Method Summary

Modifier and Type	Method and Description
long	absoluteTimeMillis() Gets the current absolute time, in milliseconds.
static SystemClock	getInstance()
long	relativeTimeMillis() Gets the current relative time, in milliseconds.
long	relativeTimeNanos() Gets the current relative time, in nanoseconds.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

getInstance

public static SystemClock getInstance()

absoluteTimeMillis

public long absoluteTimeMillis()

Description copied from class: Clock

Gets the current absolute time, in milliseconds.

Specified by:

absoluteTimeMillis in class Clock

relativeTimeMillis

public long relativeTimeMillis()

Description copied from class: Clock

Gets the current relative time, in milliseconds.

Specified by:

relativeTimeMillis in interface RelativeClock

Specified by:

relativeTimeMillis in class Clock

relativeTimeNanos

public long relativeTimeNanos()

Description copied from class: Clock

Gets the current relative time, in nanoseconds.

Specified by:

relativeTimeNanos in interface RelativeClock

Specified by:

relativeTimeNanos in class Clock