org.javasimon.clock

Class SimonClockUtils

java.lang.Object

org.javasimon.clock.SimonClockUtils

public class SimonClockUtils
extends Object

Utils related to timers and Clock class, especially default implementation based on system timers (SimonClock.SYSTEM).

Since:

3.5

Field Summary

Fields

Modifier and Type	Field and Description
static long	INIT_MILLIS Value of System.currentTimeMillis() at a particular time, when INIT_NANOS is initialized as well.
static long	INIT_NANOS Value of System.nanoTime() at a particular time, when INIT_MILLIS is initialized as well.
static long	MILLIS_GRANULARITY Measured difference in System.currentTimeMillis() during calibration.
static long	NANOS_GRANULARITY Average difference in System.nanoTime() during calibration.

Constructor Summary

Constructors

Constructor and Description
SimonClockUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static long	millisForNano(long nanos) Converts nano timer value into millis timestamp compatible with System.currentTimeMillis().

Methods inherited from class java.lang.Object

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

Field Detail

INIT_NANOS

public static final long INIT_NANOS

Value of System.nanoTime() at a particular time, when INIT_MILLIS is initialized as well. Used in millisForNano(long).

Since:

3.3

INIT_MILLIS

public static final long INIT_MILLIS

Value of System.currentTimeMillis() at a particular time, when INIT_NANOS is initialized as well. Used in millisForNano(long).

Since:

3.3

MILLIS_GRANULARITY

public static final long MILLIS_GRANULARITY

Measured difference in System.currentTimeMillis() during calibration.

Since:

3.5

NANOS_GRANULARITY

public static final long NANOS_GRANULARITY

Average difference in System.nanoTime() during calibration.

Since:

3.5

Constructor Detail

SimonClockUtils

public SimonClockUtils()

Method Detail

millisForNano

public static long millisForNano(long nanos)

Converts nano timer value into millis timestamp compatible with System.currentTimeMillis(). Method does not just divide nanos by one million, but also works with remembered values for milli- and nano-timers at one particular moment.

Parameters:

nanos - nano timer value

Returns:

ms timestamp

Since:

3.3 (moved from SimonManager where it was since 3.1)