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annotate engine/core/util/resource/pool.h @ 384:621b062e752d

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Modified the code blocks project files to fit with the new build system. Code blocks now uses scons to build each of the configurations. The python configurations build properly but fail during link with a bunch of undefined references insides of the swig generated dll, not sure why. Also updated the win32-config.py so that it no longer relies on variables defined outside of itself, this was causing code blocks to not be able to build. Updated a couple of the batch scripts so they run properly.
author vtchill@33b003aa-7bff-0310-803a-e67f0ece8222
date Wed, 20 Jan 2010 05:56:18 +0000
parents 54bfd1015b35
children b84dbc4665b0
rev   line source
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1 /***************************************************************************
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2 * Copyright (C) 2005-2008 by the FIFE team *
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3 * http://www.fifengine.de *
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4 * This file is part of FIFE. *
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5 * *
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6 * FIFE is free software; you can redistribute it and/or *
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7 * modify it under the terms of the GNU Lesser General Public *
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8 * License as published by the Free Software Foundation; either *
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9 * version 2.1 of the License, or (at your option) any later version. *
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10 * *
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11 * This library is distributed in the hope that it will be useful, *
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12 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
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14 * Lesser General Public License for more details. *
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15 * *
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16 * You should have received a copy of the GNU Lesser General Public *
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17 * License along with this library; if not, write to the *
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18 * Free Software Foundation, Inc., *
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19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA *
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20 ***************************************************************************/
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21
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22 #ifndef FIFE_POOL_H
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23 #define FIFE_POOL_H
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24
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25 // Standard C++ library includes
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26 #include <map>
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27 #include <vector>
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28 #include <string>
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29 #include <iostream>
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30 #include <cassert>
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31
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32 // 3rd party library includes
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33
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34 // FIFE includes
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35 // These includes are split up in two parts, separated by one empty line
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36 // First block: files included from the FIFE root src directory
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37 // Second block: files included from the same folder
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38 #include "resource.h"
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39 #include "resource_location.h"
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40
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41 namespace FIFE {
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42
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43 struct ResourceLocationComparator {
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44 bool operator()(const ResourceLocation* r1, const ResourceLocation* r2) const
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45 {
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46 return r1->operator<(*r2);
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47 }
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48 };
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49
0
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50 class IResource;
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51
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52 enum { RES_LOADED = 0x01, RES_NON_LOADED = 0x02};
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53
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54 /** Pool is used to optimize memory usage for resources
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55 *
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56 * Pool guarantees that there is minimal amount of resources
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57 * used in cases when it is would possible that multiple
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58 * instances of the same data would be loaded into the memory.
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59 * Pool is the owner for resources taking care of their deletion.
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60 */
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61 class Pool {
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62 public:
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63 /** Indicates invalid index for pool
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64 */
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65 static const int INVALID_ID = -1;
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66
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67 /** Default constructor.
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68 * @param name The name used in debug output.
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69 */
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70 Pool(const std::string& name);
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71
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72 /** Destructor.
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73 */
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74 virtual ~Pool();
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75
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76 /** Adds new resource provider. Transfers provider ownership to the pool
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77 */
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78 virtual void addResourceLoader(ResourceLoader* loader);
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79
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80 /** Adds new resource into the pool using the given location.
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81 * @return The index of the resource in the pool.
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82 */
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83 virtual int addResourceFromLocation(ResourceLocation* loc);
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84
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85 /** This is a convenience version of addResourceFromLocation().
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86 * It converts the filename into a ResourceLocation and then
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87 * calls addResourceFromLocation.
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88 *
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89 * @param filename The file to be loaded.
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90 * @return The index of the resource in the pool.
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91 */
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92 virtual int addResourceFromFile(const std::string& filename);
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93
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94 /** Gets resource from pool with given index
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95 *
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96 * @param inc Specifies weither this call will increase the ref counter
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97 */
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98 virtual IResource& get(unsigned int index, bool inc = false);
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99
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100 /** Removes the resource from pool if reference counter is null
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101 *
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102 * @param dec Specifies weither the ref counter will be decreased
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103 * before checking
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104 */
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105 virtual void release(unsigned int index, bool dec = false);
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106
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107 /** Purge all loaded resources.
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108 * This will purge all loaded resources with a ref count of zero.
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109 * Indices remain valid, though.
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110 * @return Number of resources deleted.
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111 */
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112 virtual int purgeLoadedResources();
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113
0
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114 /** Gets amount of resources in the pool with given status
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115 */
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116 virtual int getResourceCount(int status);
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117
147
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118 /** Prints the cache statistics to the log
0
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119 */
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120 virtual void printStatistics();
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121
147
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122 /** Performs a sanity check for the location map.
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123 */
148
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124 void sanityCheck();
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125
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126 /** Resets the pool.
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127 * This will purge all loaded resources with a ref count of zero.
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128 * The location and loader information for the locations is lost.
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129 * Only the resource loaders are retained.
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130 */
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131 virtual void reset();
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132
0
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133 private:
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134 class PoolEntry {
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135 public:
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136 PoolEntry(): resource(0), location(0), loader(0) {}
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137 ~PoolEntry() {
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138 delete location;
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139 delete resource;
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140 }
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141
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142 // Pointer to the resource that is loaded.
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143 IResource* resource;
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144 // Location of the resource.
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145 ResourceLocation* location;
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146 // Resource loader.
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147 ResourceLoader* loader;
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148 };
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149
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150 void findAndSetProvider(PoolEntry& entry);
146
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151
0
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152 std::vector<PoolEntry*> m_entries;
156
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153 typedef std::map<ResourceLocation*, int, ResourceLocationComparator> ResourceLocationToEntry;
100
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154 ResourceLocationToEntry m_location_to_entry;
0
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155 std::vector<ResourceLoader*> m_loaders;
146
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156 std::string m_name;
0
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157 };
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158
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159 } // FIFE
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160
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161 #endif