/*
***************************************************************************************
* Copyright (C) 2006 EsperTech, Inc. All rights reserved. *
* http://www.espertech.com/esper *
* http://www.espertech.com *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the GPL license *
* a copy of which has been included with this distribution in the license.txt file. *
***************************************************************************************
*/
/***************************************************************************************
* Attribution Notice
*
* This file is imported from Metrics (https://github.com/codahale/metrics subproject metrics-core).
* Metrics is Copyright (c) 2010-2012 Coda Hale, Yammer.com
* Metrics is Published under Apache Software License 2.0, see LICENSE in root folder.
*
* Thank you for the Metrics developers efforts in making their library available under an Apache license.
* EsperTech incorporates Metrics version 0.2.2 in source code form since Metrics depends on SLF4J
* and this dependency is not possible to introduce for Esper.
* *************************************************************************************
*/
package com.espertech.esper.metrics.codahale_metrics.metrics.core;
import java.util.concurrent.TimeUnit;
/**
* A timing context.
*
* @see Timer#time()
*/
public class TimerContext {
private final Timer timer;
private final Clock clock;
private final long startTime;
/**
* Creates a new {@link TimerContext} with the current time as its starting value and with the
* given {@link Timer}.
*
* @param timer the {@link Timer} to report the elapsed time to
*/
TimerContext(Timer timer, Clock clock) {
this.timer = timer;
this.clock = clock;
this.startTime = clock.tick();
}
/**
* Stops recording the elapsed time and updates the timer.
*/
public void stop() {
timer.update(clock.tick() - startTime, TimeUnit.NANOSECONDS);
}
}