GeoTessCPP
2.0.0
Software to facilitate storage and retrieval of 3D information about the Earth.
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00001 //- **************************************************************************** 00002 //- 00003 //- Copyright 2009 Sandia Corporation. Under the terms of Contract 00004 //- DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government 00005 //- retains certain rights in this software. 00006 //- 00007 //- BSD Open Source License. 00008 //- All rights reserved. 00009 //- 00010 //- Redistribution and use in source and binary forms, with or without 00011 //- modification, are permitted provided that the following conditions are met: 00012 //- 00013 //- * Redistributions of source code must retain the above copyright notice, 00014 //- this list of conditions and the following disclaimer. 00015 //- * Redistributions in binary form must reproduce the above copyright 00016 //- notice, this list of conditions and the following disclaimer in the 00017 //- documentation and/or other materials provided with the distribution. 00018 //- * Neither the name of Sandia National Laboratories nor the names of its 00019 //- contributors may be used to endorse or promote products derived from 00020 //- this software without specific prior written permission. 00021 //- 00022 //- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00023 //- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00024 //- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00025 //- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 00026 //- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00027 //- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00028 //- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00029 //- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00030 //- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00031 //- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00032 //- POSSIBILITY OF SUCH DAMAGE. 00033 //- 00034 //- **************************************************************************** 00035 00036 #ifndef ARRAYREUSE_OBJECT_H 00037 #define ARRAYREUSE_OBJECT_H 00038 00039 // **** _SYSTEM INCLUDES_ ****************************************************** 00040 00041 #include <iostream> 00042 #include <fstream> 00043 #include <vector> 00044 00045 // use standard library objects 00046 using namespace std; 00047 00048 // **** _LOCAL INCLUDES_ ******************************************************* 00049 00050 #include "CPPUtils.h" 00051 00052 // **** _BEGIN GEOTESS NAMESPACE_ ********************************************** 00053 00054 namespace geotess { 00055 00056 // **** _FORWARD REFERENCES_ *************************************************** 00057 00058 // **** _CLASS DEFINITION_ ***************************************************** 00059 00068 template<typename T> 00069 class GEOTESS_EXP_IMP ArrayReuse 00070 { 00071 private: 00072 00077 int arrayLength; 00078 00083 int arraysAddedPerAlloc; 00084 00089 int initArraysAddedPerAlloc; 00090 00094 int allocArrays; 00095 00100 vector<T*> store; 00101 00107 vector<T*> refStore; 00108 00115 void add(int count) 00116 { 00117 store.push_back(new T [count * arrayLength]); 00118 for (int i = 0; i < count; ++i) 00119 refStore.push_back(&store.back()[i * arrayLength]); 00120 00121 allocArrays += count; 00122 } 00123 00127 void destroy() 00128 { 00129 refStore.clear(); 00130 for (int i = 0; i < (int) store.size(); ++i) delete [] store[i]; 00131 } 00132 00133 public: 00134 00138 ArrayReuse() : arrayLength(1), arraysAddedPerAlloc(1), 00139 allocArrays(0) {}; 00140 00154 ArrayReuse(int alngth, int acnt) 00155 { 00156 initialize(alngth, acnt, acnt, 8, acnt + acnt); 00157 } 00158 00174 ArrayReuse(int alngth, int iacnt, int acnt) 00175 { 00176 initialize(alngth, iacnt, acnt, 8, iacnt + acnt); 00177 } 00178 00200 ArrayReuse(int alngth, int iacnt, int acnt, 00201 int rsrvstr, int rsrvrefstr) 00202 { 00203 initialize(alngth, iacnt, acnt, rsrvstr, rsrvrefstr); 00204 } 00205 00209 virtual ~ArrayReuse() { destroy(); } 00210 00216 T* getArray() 00217 { 00218 if (refStore.size() == 0) add(arraysAddedPerAlloc); 00219 00220 T* a = refStore.back(); 00221 refStore.pop_back(); 00222 return a; 00223 } 00224 00230 void reuseArray(T* a) { refStore.push_back(a); } 00231 00239 void reset() 00240 { 00241 refStore.clear(); 00242 for (int i = 0; i < (int) store.size(); ++i) 00243 for (int j = 0; 00244 j < ((i == 0) ? initArraysAddedPerAlloc : arraysAddedPerAlloc); ++j) 00245 { 00246 refStore.push_back(&store[i][j * arrayLength]); 00247 } 00248 } 00249 00254 void resetIfRequired() 00255 { 00256 if ((int) refStore.size() != allocArrays) reset(); 00257 } 00258 00274 void initialize(int alngth, int acnt) 00275 { 00276 initialize(alngth, acnt, acnt, 8, acnt + acnt); 00277 } 00278 00296 void initialize(int alngth, int iacnt, int acnt) 00297 { 00298 initialize(alngth, iacnt, acnt, 8, iacnt + acnt); 00299 } 00300 00322 void initialize(int alngth, int iacnt, int acnt, 00323 int rsrvstr, int rsrvrefstr) 00324 { 00325 // first delete any previous allocation 00326 00327 destroy(); 00328 00329 // reinitialize 00330 00331 arrayLength = alngth; 00332 arraysAddedPerAlloc = acnt; 00333 initArraysAddedPerAlloc = iacnt; 00334 store.reserve(rsrvstr); 00335 refStore.reserve(rsrvrefstr); 00336 add(iacnt); 00337 } 00338 00343 int getAllocatedArrays() const { return allocArrays; } 00344 00349 int getUsedArrayCount() const 00350 { 00351 return allocArrays - (int) refStore.size(); 00352 } 00353 00358 int getUnusedArrayCount() const 00359 { 00360 return (int) refStore.size(); 00361 } 00362 00367 int getArrayLength() const { return arrayLength; } 00368 00369 }; // end class ArrayReuse 00370 00371 } // end namespace geotess 00372 00373 #endif // ARRAYREUSE_OBJECT_H