org.agrona.concurrent

Class CachedEpochClock

java.lang.Object

org.agrona.concurrent.CachedEpochClock

All Implemented Interfaces:

EpochClock

public class CachedEpochClock
extends Object
implements EpochClock

An EpochClock that caches a timestamp which can be updated with update(long).

Instances are threadsafe with the read being volatile.

Field Summary

Fields

Modifier and Type	Field and Description
protected long	timeMs Time in milliseconds.

Constructor Summary

Constructors

Constructor and Description
CachedEpochClock()

Method Summary

Modifier and Type	Method and Description
void	advance(long millis) Advance the value of the timestamp in with release ordered semantics.
long	time() Time in milliseconds since 1 Jan 1970 UTC.
void	update(long timeMs) Update the value of the timestamp in with release ordered semantics.

Methods inherited from class java.lang.Object

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

Field Detail

timeMs

protected volatile long timeMs

Time in milliseconds.

Constructor Detail

CachedEpochClock

public CachedEpochClock()

Method Detail

time

public long time()

Time in milliseconds since 1 Jan 1970 UTC.

Specified by:

time in interface EpochClock

Returns:

the number of milliseconds since 1 Jan 1970 UTC.

update

public void update(long timeMs)

Update the value of the timestamp in with release ordered semantics.

Parameters:

timeMs - value to update the timestamp.

advance

public void advance(long millis)

Advance the value of the timestamp in with release ordered semantics.

Parameters:

millis - to advance the timestamp.