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