00001 00002 // 00003 // Thor C++ Library 00004 // Copyright (c) 2011-2012 Jan Haller 00005 // 00006 // This software is provided 'as-is', without any express or implied 00007 // warranty. In no event will the authors be held liable for any damages 00008 // arising from the use of this software. 00009 // 00010 // Permission is granted to anyone to use this software for any purpose, 00011 // including commercial applications, and to alter it and redistribute it 00012 // freely, subject to the following restrictions: 00013 // 00014 // 1. The origin of this software must not be misrepresented; you must not 00015 // claim that you wrote the original software. If you use this software 00016 // in a product, an acknowledgment in the product documentation would be 00017 // appreciated but is not required. 00018 // 00019 // 2. Altered source versions must be plainly marked as such, and must not be 00020 // misrepresented as being the original software. 00021 // 00022 // 3. This notice may not be removed or altered from any source distribution. 00023 // 00025 00028 00029 #ifndef THOR_RESOURCEMANAGER_HPP 00030 #define THOR_RESOURCEMANAGER_HPP 00031 00032 #include <Thor/Resources/ResourcePtr.hpp> 00033 #include <Thor/Resources/ResourceStrategies.hpp> 00034 #include <Thor/Resources/ResourceKeyTraits.hpp> 00035 #include <Thor/SmartPtr/MovedPtr.hpp> 00036 #include <Thor/Tools/Exceptions.hpp> 00037 #include <Thor/Tools/NonCopyable.hpp> 00038 #include <Thor/Tools/ForEach.hpp> 00039 #include <Thor/Detail/ResourceSlot.hpp> 00040 #include <Thor/Config.hpp> 00041 00042 #include THOR_TR1_HEADER(functional) 00043 #include THOR_TR1_HEADER(type_traits) 00044 #include <map> 00045 00046 00047 namespace thor 00048 { 00049 00052 00065 template <class Resource, class ResourceKey = typename Resources::KeyTraits<Resource>::Type > 00066 class ResourceManager : private NonCopyable 00067 { 00068 // --------------------------------------------------------------------------------------------------------------------------- 00069 // Public member functions 00070 public: 00074 ResourceManager(); 00075 00080 ResourcePtr<Resource> Search(const ResourceKey& key); 00081 00086 ResourcePtr<const Resource> Search(const ResourceKey& key) const; 00087 00096 ResourcePtr<Resource> Acquire(const ResourceKey& key); 00097 00106 bool Release(const ResourceKey& key); 00107 00110 void SetLoadingFailureStrategy(Resources::LoadingFailureStrategy strategy); 00111 00116 void SetReleaseStrategy(Resources::ReleaseStrategy strategy); 00117 00118 00119 // --------------------------------------------------------------------------------------------------------------------------- 00120 // Private types 00121 private: 00122 typedef typename std::tr1::remove_const<Resource>::type MutableResource; 00123 typedef detail::ResourceSlot<MutableResource> ResourceSlot; 00124 typedef std::map<ResourceKey, ResourceSlot> ResourceMap; 00125 typedef typename ResourceMap::iterator SlotIterator; 00126 typedef typename ResourceMap::const_iterator SlotConstIterator; 00127 00128 00129 // --------------------------------------------------------------------------------------------------------------------------- 00130 // Private member functions 00131 private: 00132 // Loads and inserts a resource. 00133 ResourcePtr<Resource> AddResource(const ResourceKey& key); 00134 00135 // Unloads and erases a resource. 00136 void RemoveResource(SlotIterator itr); 00137 00138 00139 // --------------------------------------------------------------------------------------------------------------------------- 00140 // Private variables 00141 private: 00142 std::tr1::shared_ptr<ResourceMap> mMap; 00143 Resources::ReleaseStrategy mReleaseStrategy; 00144 Resources::LoadingFailureStrategy mLoadingFailureStrategy; 00145 00146 00147 // --------------------------------------------------------------------------------------------------------------------------- 00148 // Friends 00149 friend class detail::ResourceDeleter<MutableResource, ResourceKey>; 00150 }; 00151 00153 00154 } // namespace thor 00155 00156 #include <Thor/Detail/ResourceManager.inl> 00157 #endif // THOR_RESOURCEMANAGER_HPP