org.eigenbase.trace
Class EigenbaseTimingTracer

java.lang.Object
  org.eigenbase.trace.EigenbaseTimingTracer

public class EigenbaseTimingTracer
extends Object

EigenbaseTimingTracer provides a mechanism for tracing the timing of a call sequence at nanosecond resolution.

Version:

$Id: //open/dev/farrago/src/org/eigenbase/trace/EigenbaseTimingTracer.java#6 $

Author:

John V. Sichi

Field Summary

private static DecimalFormat	decimalFormat
private long	lastNanoTime
private Logger	logger

Constructor Summary

EigenbaseTimingTracer(Logger logger, String startEvent)
Creates a new timing tracer, publishing an initial event (at elapsed time 0).

Method Summary

void	traceTime(String event) Publishes an event with the time elapsed since the previous event.

Methods inherited from class java.lang.Object

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

Field Detail

decimalFormat

private static final DecimalFormat decimalFormat

logger

private final Logger logger

lastNanoTime

private long lastNanoTime

Constructor Detail

EigenbaseTimingTracer

public EigenbaseTimingTracer(Logger logger,
                             String startEvent)

Creates a new timing tracer, publishing an initial event (at elapsed time 0).

Parameters:

logger - logger on which to log timing events; level FINE will be used

startEvent - event to trace as start of timing

Method Detail

traceTime

public void traceTime(String event)

Publishes an event with the time elapsed since the previous event.

Parameters:

event - event to trace