clockwerk-opensim – Blame information for rev 1

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