com.zynaptic.reaction.util
Class JavaMonotonicClock

java.lang.Object
  com.zynaptic.reaction.util.JavaMonotonicClock

All Implemented Interfaces:

MonotonicClockSource

public final class JavaMonotonicClock
extends java.lang.Object
implements MonotonicClockSource

Implements a monotonic clock source using the standard Java monotonic clock. This monotonic clock variant makes use of the nanoTime system call which provides a monotonic clock source on supported platforms. Note that some platforms, including many standard Linux distributions, do not provide native monotonic clock support and these should use the fixed up monotonic clock source instead.

This simple implementation does not wrap correctly and will fail after 292 years of uptime.

Constructor Summary

JavaMonotonicClock()

Method Summary

long	getMsTime() Gets the elapsed time since the monotonic clock source was initialised.
void	init() Initialises the monotonic clock source.

Methods inherited from class java.lang.Object

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

Constructor Detail

JavaMonotonicClock

public JavaMonotonicClock()

Method Detail

getMsTime

public final long getMsTime()

Description copied from interface: MonotonicClockSource

Gets the elapsed time since the monotonic clock source was initialised. This method is called in order to obtain the current time, defined as the integer number of milliseconds since the monotonic clock source was initialised.

Specified by:

getMsTime in interface MonotonicClockSource

Returns:

Returns the monotonic time since the clock was initialised, specified in milliseconds. Returns invalid data if the clock has not been initialised.

init

public final void init()

Description copied from interface: MonotonicClockSource

Initialises the monotonic clock source. This method is called on startup by the reactor in order to initialise the timebase clock. It resets the current clock time value to 0 and then sets the timer counter running.

Specified by:

init in interface MonotonicClockSource