opensim-development – Blame information for rev 1
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1 | eva | 1 | /* |
2 | * Copyright (c) Contributors, http://opensimulator.org/ |
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3 | * See CONTRIBUTORS.TXT for a full list of copyright holders. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions are met: |
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7 | * * Redistributions of source code must retain the above copyright |
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8 | * notice, this list of conditions and the following disclaimer. |
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9 | * * Redistributions in binary form must reproduce the above copyright |
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10 | * notice, this list of conditions and the following disclaimer in the |
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11 | * documentation and/or other materials provided with the distribution. |
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12 | * * Neither the name of the OpenSimulator Project nor the |
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13 | * names of its contributors may be used to endorse or promote products |
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14 | * derived from this software without specific prior written permission. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY |
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17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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19 | * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY |
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20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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26 | */ |
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27 | |||
28 | using System; |
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29 | using System.Collections.Generic; |
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30 | |||
31 | namespace OpenSim.Framework |
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32 | { |
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33 | /// <summary> |
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34 | /// Naive pool implementation. |
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35 | /// </summary> |
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36 | /// <remarks> |
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37 | /// Currently assumes that objects are in a useable state when returned. |
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38 | /// </remarks> |
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39 | public class Pool<T> |
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40 | { |
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41 | /// <summary> |
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42 | /// Number of objects in the pool. |
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43 | /// </summary> |
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44 | public int Count |
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45 | { |
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46 | get |
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47 | { |
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48 | lock (m_pool) |
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49 | return m_pool.Count; |
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50 | } |
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51 | } |
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52 | |||
53 | private Stack<T> m_pool; |
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54 | |||
55 | /// <summary> |
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56 | /// Maximum pool size. Beyond this, any returned objects are not pooled. |
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57 | /// </summary> |
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58 | private int m_maxPoolSize; |
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59 | |||
60 | private Func<T> m_createFunction; |
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61 | |||
62 | public Pool(Func<T> createFunction, int maxSize) |
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63 | { |
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64 | m_maxPoolSize = maxSize; |
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65 | m_createFunction = createFunction; |
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66 | m_pool = new Stack<T>(m_maxPoolSize); |
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67 | } |
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68 | |||
69 | public T GetObject() |
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70 | { |
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71 | lock (m_pool) |
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72 | { |
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73 | if (m_pool.Count > 0) |
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74 | return m_pool.Pop(); |
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75 | else |
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76 | return m_createFunction(); |
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77 | } |
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78 | } |
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79 | |||
80 | public void ReturnObject(T obj) |
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81 | { |
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82 | lock (m_pool) |
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83 | { |
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84 | if (m_pool.Count >= m_maxPoolSize) |
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85 | return; |
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86 | else |
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87 | m_pool.Push(obj); |
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88 | } |
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89 | } |
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90 | } |
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91 | } |