org.apache.cassandra.utils

Class Clock

java.lang.Object

org.apache.cassandra.utils.Clock

public class Clock
extends java.lang.Object

Wrapper around time related functions that are either implemented by using the default JVM calls or by using a custom implementation for testing purposes. See instance for how to use a custom implementation. Please note that Clock wasn't used, as it would not be possible to provide an implementation for nanoTime() with the exact same properties of System.nanoTime().

Field Summary

Fields

Modifier and Type	Field and Description
static Clock	instance Static singleton object that will be instanciated by default with a system clock implementation.

Constructor Summary

Constructors

Constructor and Description
Clock()

Method Summary

Modifier and Type	Method and Description
long	currentTimeMillis()
long	nanoTime()

Methods inherited from class java.lang.Object

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

Field Detail

instance

public static Clock instance

Static singleton object that will be instanciated by default with a system clock implementation. Set cassandra.clock system property to a FQCN to use a different implementation instead.

Constructor Detail

Clock

public Clock()

Method Detail

nanoTime

public long nanoTime()

See Also:

System.nanoTime()

currentTimeMillis

public long currentTimeMillis()

See Also:

System.currentTimeMillis()