Package io.helidon.metrics

Interface Clock

public interface Clock

Clock interface to allow replacing system clock with a custom one (e.g. for unit testing).

Field Summary

Fields

Modifier and Type	Field and Description
static Clock	SYSTEM System clock.

Method Summary

Modifier and Type	Method and Description
long	milliTime() A millisecond precision current time, such as provided by System.currentTimeMillis().
long	nanoTick() A nanosecond precision tick to use for time measurements.
static Clock	system() Create a clock based on system time.

Field Detail

SYSTEM

static final Clock SYSTEM

System clock. Please do not use directly, use system(). This is only visible as we cannot do private modifier in interfaces yet.

Method Detail

system

static Clock system()

Create a clock based on system time.

Returns:

clock based on system time

nanoTick

long nanoTick()

A nanosecond precision tick to use for time measurements. The value is meaningless, it just must increase correctly during a JVM runtime.

Returns:

nanosecond value

milliTime

long milliTime()

A millisecond precision current time, such as provided by System.currentTimeMillis().

Returns:

current time in milliseconds