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annotate src/org/eclipse/jetty/util/Atomics.java @ 803:166b16bda630

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remove org.eclipse.jetty.util.preventers
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 07 Sep 2016 21:21:32 -0600
parents 3428c60d7cfc
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.util;
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20
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21 import java.util.concurrent.atomic.AtomicInteger;
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22 import java.util.concurrent.atomic.AtomicLong;
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23
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24 public class Atomics
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25 {
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26 private Atomics()
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27 {
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28 }
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29
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30 public static void updateMin(AtomicLong currentMin, long newValue)
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31 {
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32 long oldValue = currentMin.get();
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33 while (newValue < oldValue)
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34 {
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35 if (currentMin.compareAndSet(oldValue, newValue))
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36 break;
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37 oldValue = currentMin.get();
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38 }
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39 }
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40
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41 public static void updateMax(AtomicLong currentMax, long newValue)
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42 {
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43 long oldValue = currentMax.get();
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44 while (newValue > oldValue)
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45 {
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46 if (currentMax.compareAndSet(oldValue, newValue))
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47 break;
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48 oldValue = currentMax.get();
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49 }
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50 }
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51
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52 public static void updateMin(AtomicInteger currentMin, int newValue)
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53 {
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54 int oldValue = currentMin.get();
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55 while (newValue < oldValue)
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56 {
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57 if (currentMin.compareAndSet(oldValue, newValue))
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58 break;
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59 oldValue = currentMin.get();
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60 }
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61 }
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62
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63 public static void updateMax(AtomicInteger currentMax, int newValue)
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64 {
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65 int oldValue = currentMax.get();
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66 while (newValue > oldValue)
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67 {
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68 if (currentMax.compareAndSet(oldValue, newValue))
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69 break;
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70 oldValue = currentMax.get();
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71 }
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72 }
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73 }