org.apache.logging.log4j.core.util

Class CachedClock

java.lang.Object

org.apache.logging.log4j.core.util.CachedClock

All Implemented Interfaces:

Clock

public final class CachedClock
extends Object
implements Clock

Implementation of the Clock interface that tracks the time in a private long field that is updated by a background thread once every millisecond. Timers on most platforms do not have millisecond granularity, so the returned value may "jump" every 10 or 16 milliseconds. To reduce this problem, this class also updates the internal time value every 1024 calls to currentTimeMillis().

Method Summary

Modifier and Type	Method and Description
long	currentTimeMillis() Returns the value of a private long field that is updated by a background thread once every millisecond.
static CachedClock	instance()

Methods inherited from class java.lang.Object

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

Method Detail

instance

public static CachedClock instance()

currentTimeMillis

public long currentTimeMillis()

Returns the value of a private long field that is updated by a background thread once every millisecond. Timers on most platforms do not have millisecond granularity, the returned value may "jump" every 10 or 16 milliseconds. To reduce this problem, this method also updates the internal time value every 1024 calls.

Specified by:

currentTimeMillis in interface Clock

Returns:

the cached time