velox.api.layer1.common

Class NanoClock

java.lang.Object

velox.api.layer1.common.NanoClock

public class NanoClock
extends java.lang.Object

Provides high precision timestamps. It's around System.currentTimeMillis() * 1000_000, but it increases smoothly between neighboring milliseconds.

Field Summary

Fields

Modifier and Type	Field and Description
private static int	ADJUSTMENT_BACK_SAFETY_INTERVAL
private static long	ADJUSTMENT_STEP_MS
private static java.lang.Object	monitor
private static long	nanoOffset
private static long	RAPID_FORWARD_ADJUSTMENT_THRESHOLD_MS When clock moves forward by more then this value it will be rapidly adjusted.
private static long	stopUntil
private static long	stopValue

Constructor Summary

Constructors

Constructor and Description
NanoClock()

Method Summary

Modifier and Type	Method and Description
static long	currentTimeNanos() Get current time in nanoseconds.

Methods inherited from class java.lang.Object

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

Field Detail

ADJUSTMENT_STEP_MS

private static final long ADJUSTMENT_STEP_MS

See Also:

Constant Field Values

ADJUSTMENT_BACK_SAFETY_INTERVAL

private static final int ADJUSTMENT_BACK_SAFETY_INTERVAL

See Also:

Constant Field Values

RAPID_FORWARD_ADJUSTMENT_THRESHOLD_MS

private static final long RAPID_FORWARD_ADJUSTMENT_THRESHOLD_MS

When clock moves forward by more then this value it will be rapidly adjusted. Happens inside VM when host goes to sleep.

nanoOffset

private static long nanoOffset

stopUntil

private static long stopUntil

stopValue

private static long stopValue

monitor

private static final java.lang.Object monitor

Constructor Detail

NanoClock

public NanoClock()

Method Detail

currentTimeNanos

public static long currentTimeNanos()

Get current time in nanoseconds. Expected to be fast, less than ~50 nanoseconds per call if called sequentially (~33ns/call on Ryzen 7 2700X)