org.biojava.nbio.ronn.Timer Maven / Gradle / Ivy
/*
* @(#)Timer.java 1.0 June 2010
*
* Copyright (c) 2010 Peter Troshin
*
* BioJava development code
*
* This code may be freely distributed and modified under the
* terms of the GNU Lesser General Public Licence. This should
* be distributed with the code. If you do not have a copy,
* see:
*
* http://www.gnu.org/copyleft/lesser.html
*
* Copyright for this code is held jointly by the individual
* authors. These should be listed in @author doc comments.
*
* For more information on the BioJava project and its aims,
* or to join the biojava-l mailing list, visit the home page
* at:
*
* http://www.biojava.org/
*
*/
package org.biojava.nbio.ronn;
import java.util.concurrent.TimeUnit;
/**
* A simple timer, calculates the time interval between two events. Keeps two
* counters, one for long time intervals, to measure time between the start and
* end of the application for instance, and another for short events, to measure
* how long it took to reach a next block of code.
*
* @author Peter Troshin
* @version 1.0
* @since 3.0.2
*/
public class Timer {
private long checkPoint;
private final long startTime;
private TimeUnit reportTimeUnit;
public Timer() {
startTime = System.nanoTime();
checkPoint = startTime;
// set default time unit for reporting
reportTimeUnit = TimeUnit.SECONDS;
}
public Timer(final TimeUnit reportIn) {
this();
reportTimeUnit = reportIn;
}
public void checkPoint() {
checkPoint = System.nanoTime();
}
long getStepTime(final TimeUnit tunit) {
final long duration = tunit.convert(System.nanoTime() - checkPoint,
TimeUnit.NANOSECONDS);
checkPoint();
return duration;
}
long getStepTime() {
return getStepTime(reportTimeUnit);
}
long getTotalTime() {
return getTotalTime(reportTimeUnit);
}
long getTotalTime(final TimeUnit tunit) {
return tunit.convert(System.nanoTime() - startTime,
TimeUnit.NANOSECONDS);
}
}