0f044e2f47
Move the Scylla JMX code under "com.scylladb.jmx" package. Signed-off-by: Pekka Enberg <penberg@scylladb.com>
66 lines
2.0 KiB
Java
66 lines
2.0 KiB
Java
package com.scylladb.jmx.utils;
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/*
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* Copyright (C) 2015 ScyllaDB
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*/
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/*
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* This file is part of Scylla.
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*
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* Scylla is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Scylla is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Scylla. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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*
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* RecentEstimatedHistogram In the (deprecated) 'recent' functionality, each
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* call to get the values cleans the value.
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*
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* The RecentEstimatedHistogram support recent call to EstimatedHistogram.
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* It holds the latest total values and a call to getBuckets return the delta.
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*
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*/
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public class RecentEstimatedHistogram extends EstimatedHistogram {
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public RecentEstimatedHistogram() {
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}
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public RecentEstimatedHistogram(int bucketCount) {
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super(bucketCount);
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}
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public RecentEstimatedHistogram(long[] offsets, long[] bucketData) {
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super(offsets, bucketData);
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}
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/**
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* Set the current buckets to new value and return the delta from the last
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* getBuckets call
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*
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* @param bucketData
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* - new bucket value
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* @return a long[] containing the current histogram difference buckets
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*/
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public long[] getBuckets(long[] bucketData) {
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if (bucketData.length == 0) {
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return new long[0];
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}
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final int len = buckets.length();
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long[] rv = new long[len];
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for (int i = 0; i < len; i++) {
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rv[i] = bucketData[i];
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rv[i] -= buckets.getAndSet(i, bucketData[i]);
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}
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return rv;
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}
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}
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