opensim – 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 log4net; |
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29 | using System; |
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30 | using System.IO; |
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31 | using System.Collections.Generic; |
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32 | using System.Reflection; |
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33 | using GlynnTucker.Cache; |
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34 | using Mono.Addins; |
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35 | using Nini.Config; |
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36 | using OpenSim.Framework; |
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37 | using OpenSim.Region.Framework.Interfaces; |
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38 | using OpenSim.Region.Framework.Scenes; |
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39 | using OpenSim.Services.Interfaces; |
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40 | |||
41 | namespace OpenSim.Region.CoreModules.Asset |
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42 | { |
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43 | [Extension(Path = "/OpenSim/RegionModules", NodeName = "RegionModule", Id = "GlynnTuckerAssetCache")] |
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44 | public class GlynnTuckerAssetCache : ISharedRegionModule, IImprovedAssetCache |
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45 | { |
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46 | private static readonly ILog m_log = |
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47 | LogManager.GetLogger( |
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48 | MethodBase.GetCurrentMethod().DeclaringType); |
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49 | |||
50 | private bool m_Enabled; |
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51 | private ICache m_Cache; |
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52 | private ulong m_Hits; |
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53 | private ulong m_Requests; |
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54 | |||
55 | // Instrumentation |
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56 | private uint m_DebugRate; |
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57 | |||
58 | public Type ReplaceableInterface |
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59 | { |
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60 | get { return null; } |
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61 | } |
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62 | |||
63 | public string Name |
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64 | { |
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65 | get { return "GlynnTuckerAssetCache"; } |
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66 | } |
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67 | |||
68 | public void Initialise(IConfigSource source) |
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69 | { |
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70 | IConfig moduleConfig = source.Configs["Modules"]; |
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71 | |||
72 | if (moduleConfig != null) |
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73 | { |
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74 | string name = moduleConfig.GetString("AssetCaching"); |
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75 | //m_log.DebugFormat("[ASSET CACHE] name = {0} (this module's name: {1}). Sync? ", name, Name, m_Cache.IsSynchronized); |
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76 | |||
77 | if (name == Name) |
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78 | { |
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79 | m_Cache = new GlynnTucker.Cache.SimpleMemoryCache(); |
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80 | m_Enabled = true; |
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81 | |||
82 | m_log.Info("[ASSET CACHE]: GlynnTucker asset cache enabled"); |
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83 | |||
84 | // Instrumentation |
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85 | IConfig cacheConfig = source.Configs["AssetCache"]; |
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86 | if (cacheConfig != null) |
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87 | m_DebugRate = (uint)cacheConfig.GetInt("DebugRate", 0); |
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88 | } |
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89 | } |
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90 | } |
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91 | |||
92 | public void PostInitialise() |
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93 | { |
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94 | } |
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95 | |||
96 | public void Close() |
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97 | { |
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98 | } |
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99 | |||
100 | public void AddRegion(Scene scene) |
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101 | { |
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102 | if (m_Enabled) |
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103 | scene.RegisterModuleInterface<IImprovedAssetCache>(this); |
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104 | } |
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105 | |||
106 | public void RemoveRegion(Scene scene) |
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107 | { |
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108 | } |
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109 | |||
110 | public void RegionLoaded(Scene scene) |
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111 | { |
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112 | } |
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113 | |||
114 | //////////////////////////////////////////////////////////// |
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115 | // IImprovedAssetCache |
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116 | // |
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117 | |||
118 | public bool Check(string id) |
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119 | { |
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120 | return m_Cache.Contains(id); |
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121 | } |
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122 | |||
123 | public void Cache(AssetBase asset) |
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124 | { |
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125 | if (asset != null) |
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126 | m_Cache.AddOrUpdate(asset.ID, asset); |
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127 | } |
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128 | |||
129 | public AssetBase Get(string id) |
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130 | { |
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131 | Object asset = null; |
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132 | m_Cache.TryGet(id, out asset); |
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133 | |||
134 | Debug(asset); |
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135 | |||
136 | return (AssetBase)asset; |
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137 | } |
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138 | |||
139 | public void Expire(string id) |
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140 | { |
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141 | Object asset = null; |
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142 | if (m_Cache.TryGet(id, out asset)) |
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143 | m_Cache.Remove(id); |
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144 | } |
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145 | |||
146 | public void Clear() |
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147 | { |
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148 | m_Cache.Clear(); |
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149 | } |
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150 | |||
151 | private void Debug(Object asset) |
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152 | { |
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153 | // Temporary instrumentation to measure the hit/miss rate |
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154 | if (m_DebugRate > 0) |
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155 | { |
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156 | ++m_Requests; |
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157 | if (asset != null) |
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158 | ++m_Hits; |
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159 | |||
160 | if ((m_Requests % m_DebugRate) == 0) |
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161 | m_log.DebugFormat("[ASSET CACHE]: Hit Rate {0} / {1} == {2}%", m_Hits, m_Requests, ((float)m_Hits / (float)m_Requests) * 100.0f); |
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162 | } |
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163 | // End instrumentation |
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164 | } |
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165 | } |
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166 | } |