1 // Copyright (c) 2008 Roberto Raggi <roberto.raggi@gmail.com> 2 // 3 // Permission is hereby granted, free of charge, to any person obtaining a copy 4 // of this software and associated documentation files (the "Software"), to deal 5 // in the Software without restriction, including without limitation the rights 6 // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 7 // copies of the Software, and to permit persons to whom the Software is 8 // furnished to do so, subject to the following conditions: 9 // 10 // The above copyright notice and this permission notice shall be included in 11 // all copies or substantial portions of the Software. 12 // 13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 14 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 15 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 16 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 17 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 18 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 19 // THE SOFTWARE. 20 21 #pragma once 22 23 #include "CPlusPlusForwardDeclarations.h" 24 #include <new> 25 26 namespace CPlusPlus { 27 28 class MemoryPool; 29 30 class CPLUSPLUS_EXPORT MemoryPool 31 { 32 MemoryPool(const MemoryPool &other); 33 void operator =(const MemoryPool &other); 34 35 public: 36 MemoryPool(); 37 ~MemoryPool(); 38 39 void reset(); 40 allocate(size_t size)41 inline void *allocate(size_t size) 42 { 43 size = (size + 7) & ~7; 44 if (_ptr && (_ptr + size < _end)) { 45 void *addr = _ptr; 46 _ptr += size; 47 return addr; 48 } 49 return allocate_helper(size); 50 } 51 52 private: 53 void *allocate_helper(size_t size); 54 55 private: 56 char **_blocks; 57 int _allocatedBlocks; 58 int _blockCount; 59 char *_ptr; 60 char *_end; 61 62 enum 63 { 64 BLOCK_SIZE = 8 * 1024, 65 DEFAULT_BLOCK_COUNT = 8 66 }; 67 }; 68 69 class CPLUSPLUS_EXPORT Managed 70 { 71 Managed(const Managed &other); 72 void operator = (const Managed &other); 73 74 public: 75 Managed(); 76 virtual ~Managed(); 77 78 void *operator new(size_t size, MemoryPool *pool); 79 void operator delete(void *); 80 void operator delete(void *, MemoryPool *); 81 }; 82 83 } // namespace CPlusPlus 84