SUMO - Simulation of Urban MObility
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00001 /****************************************************************************/ 00007 // A pool of resuable instances 00008 /****************************************************************************/ 00009 // SUMO, Simulation of Urban MObility; see http://sumo.sourceforge.net/ 00010 // Copyright (C) 2001-2012 DLR (http://www.dlr.de/) and contributors 00011 /****************************************************************************/ 00012 // 00013 // This file is part of SUMO. 00014 // SUMO is free software: you can redistribute it and/or modify 00015 // it under the terms of the GNU General Public License as published by 00016 // the Free Software Foundation, either version 3 of the License, or 00017 // (at your option) any later version. 00018 // 00019 /****************************************************************************/ 00020 #ifndef InstancePool_h 00021 #define InstancePool_h 00022 00023 00024 // =========================================================================== 00025 // included modules 00026 // =========================================================================== 00027 #ifdef _MSC_VER 00028 #include <windows_config.h> 00029 #else 00030 #include <config.h> 00031 #endif 00032 00033 #include <vector> 00034 #include <algorithm> 00035 #include <cassert> 00036 00037 00038 // =========================================================================== 00039 // class definitions 00040 // =========================================================================== 00045 template<typename T> 00046 class InstancePool { 00047 public: 00052 InstancePool(bool deleteOnQuit) : myDeleteOnQuit(deleteOnQuit) { } 00053 00054 00056 ~InstancePool() { 00057 typedef typename std::vector<T*>::iterator It; 00058 if (myDeleteOnQuit) { 00059 for (It i = myFreeInstances.begin(); i != myFreeInstances.end(); i++) { 00060 delete *i; 00061 } 00062 } 00063 } 00064 00065 00073 T* getFreeInstance() { 00074 if (myFreeInstances.size() == 0) { 00075 return 0; 00076 } else { 00077 T* instance = myFreeInstances.back(); 00078 myFreeInstances.pop_back(); 00079 return instance; 00080 } 00081 } 00082 00083 00088 void addFreeInstance(T* instance) { 00089 myFreeInstances.push_back(instance); 00090 } 00091 00092 00097 void addFreeInstances(const std::vector<T*> instances) { 00098 std::copy(instances.begin(), instances.end(), 00099 std::back_inserter(myFreeInstances)); 00100 } 00101 00102 00103 private: 00105 std::vector<T*> myFreeInstances; 00106 00108 bool myDeleteOnQuit; 00109 00110 00111 }; 00112 00113 00114 #endif 00115 00116 /****************************************************************************/ 00117