com.caucho.env.meter.AbstractMeter Maven / Gradle / Ivy
/*
* Copyright (c) 1998-2018 Caucho Technology -- all rights reserved
*
* This file is part of Resin(R) Open Source
*
* Each copy or derived work must preserve the copyright notice and this
* notice unmodified.
*
* Resin Open Source is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* Resin Open Source is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
* of NON-INFRINGEMENT. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with Resin Open Source; if not, write to the
*
* Free Software Foundation, Inc.
* 59 Temple Place, Suite 330
* Boston, MA 02111-1307 USA
*
* @author Scott Ferguson
*/
package com.caucho.env.meter;
abstract public class AbstractMeter implements Meter {
private final String _name;
protected AbstractMeter(String name)
{
_name = name;
}
/**
* Returns the meter's name.
*/
@Override
public final String getName()
{
return _name;
}
/**
* Sample the meter, resetting any counters for the next sample.
*/
@Override
abstract public void sample();
/**
* Calculate the current value based on the previous sample().
*/
@Override
abstract public double calculate();
/**
* Returns the current value.
*/
@Override
public double peek()
{
return 0;
}
@Override
public String toString()
{
return getClass().getSimpleName() + "[" + _name + "]";
}
}
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