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93938: Merged BRANCHES/DEV/mward/post50_hbf_fixes to BRANCHES/DEV/HEAD-BUG-FIX: 93561: Cache stats: Fixed concurrency issue with 'get' count. Added method to retrieve stats snapshot. git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@95014 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261
71 lines
2.0 KiB
Java
71 lines
2.0 KiB
Java
/*
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* Copyright (C) 2005-2015 Alfresco Software Limited.
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*
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* This file is part of Alfresco
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*
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* Alfresco is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser 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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* Alfresco 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 Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.alfresco.repo.cache;
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/**
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* Represents a single cache operation type's statistics.
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* For example, the cummalative time spent performing a cache's remove operation
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* and the number of times that the remove was performed.
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* <p>
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* Instances are immutable.
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*/
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public final class OperationStats
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{
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/** Total time spent in operations of this type */
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private final double totalTime;
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/** Count of how many instances of this operation occurred. */
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private final long count;
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public OperationStats(double totalTime, long count)
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{
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this.totalTime = totalTime;
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this.count = count;
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}
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public OperationStats(OperationStats source, double totalTime, long count)
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{
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if (Double.compare(source.totalTime, Double.NaN) == 0)
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{
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// No previous time to add new time to.
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this.totalTime = totalTime;
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}
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else
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{
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this.totalTime = source.totalTime + totalTime;
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}
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this.count = source.count + count;
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}
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public double meanTime()
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{
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return totalTime / count;
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}
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public double getTotalTime()
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{
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return this.totalTime;
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}
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public long getCount()
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{
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return this.count;
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}
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}
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