org.apache.calcite.util.trace

Class CalciteTimingTracer

java.lang.Object

org.apache.calcite.util.trace.CalciteTimingTracer

public class CalciteTimingTracer
extends Object

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

Constructor Summary

Constructors

Constructor and Description
CalciteTimingTracer(org.slf4j.Logger logger, String startEvent) Creates a new timing tracer, publishing an initial event (at elapsed time 0).

Method Summary

Modifier and Type	Method and Description
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

Constructor Detail

CalciteTimingTracer

public CalciteTimingTracer(org.slf4j.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