/*
* The MIT License
*
* Copyright (c) 2009 The Broad Institute
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package htsjdk.samtools.util;
/**
* Utility to help in performance testing.
*/
public class StopWatch {
private long startTime = 0;
private long elapsedTime = 0;
private boolean running = false;
public void start() {
this.startTime = System.currentTimeMillis();
this.running = true;
}
public void stop() {
long stopTime = System.currentTimeMillis();
elapsedTime += stopTime - startTime;
this.running = false;
}
public void reset() {
stop();
elapsedTime = 0;
startTime = 0;
}
/**
* Returns the cumulative time between all the start() and stop() calls made to this object. If the
* StopWatch is currently running, also includes the time between the most recent start() and now.
* @return elapsedTime in milliseconds
*/
public long getElapsedTime() {
final long currentElapsed;
if (running) {
currentElapsed = (System.currentTimeMillis() - startTime);
} else {
currentElapsed = 0;
}
return currentElapsed + elapsedTime;
}
/**
* @return same as getElapsedTime(), but truncated to seconds.
*/
public long getElapsedTimeSecs() {
return getElapsedTime() / 1000;
}
}