com.sun.marlin.stats.StatLong Maven / Gradle / Ivy
/*
* Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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*/
package com.sun.marlin.stats;
/**
* Statistics as long values
*/
public class StatLong {
public final String name;
public long count = 0l;
public long sum = 0l;
public long min = Integer.MAX_VALUE;
public long max = Integer.MIN_VALUE;
public StatLong(final String name) {
this.name = name;
}
public void reset() {
count = 0l;
sum = 0l;
min = Integer.MAX_VALUE;
max = Integer.MIN_VALUE;
}
public void add(final int val) {
count++;
sum += val;
if (val < min) {
min = val;
}
if (val > max) {
max = val;
}
}
public void add(final long val) {
count++;
sum += val;
if (val < min) {
min = val;
}
if (val > max) {
max = val;
}
}
@Override
public String toString() {
return toString(new StringBuilder(128)).toString();
}
public final StringBuilder toString(final StringBuilder sb) {
sb.append(name).append('[').append(count);
sb.append("] sum: ").append(sum).append(" avg: ");
sb.append(trimTo3Digits(((double) sum) / count));
sb.append(" [").append(min).append(" | ").append(max).append("]");
return sb;
}
/**
* Adjust the given double value to keep only 3 decimal digits
*
* @param value value to adjust
* @return double value with only 3 decimal digits
*/
public static double trimTo3Digits(final double value) {
return ((long) (1e3d * value)) / 1e3d;
}
}