1 /* 2 * Copyright (c) 2003 Marcus Overhagen 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 20 * DEALINGS IN THE SOFTWARE. 21 */ 22 #ifndef _BLOCK_CACHE_H 23 #define _BLOCK_CACHE_H 24 25 26 #include <BeBuild.h> 27 #include <Locker.h> 28 29 30 // The allocation type to be used in the constructor 31 enum { 32 B_OBJECT_CACHE = 0, 33 B_MALLOC_CACHE = 1 34 }; 35 36 class BBlockCache { 37 public: 38 BBlockCache(uint32 blockCount, size_t blockSize, 39 uint32 allocationType); 40 virtual ~BBlockCache(); 41 42 void* Get(size_t blockSize); 43 void Save(void *pointer, size_t blockSize); 44 45 private: 46 virtual void _ReservedBlockCache1(); 47 virtual void _ReservedBlockCache2(); 48 49 BBlockCache(const BBlockCache &); 50 BBlockCache &operator=(const BBlockCache &); 51 52 struct _FreeBlock; 53 54 _FreeBlock* fFreeList; 55 size_t fBlockSize; 56 int32 fFreeBlocks; 57 int32 fBlockCount; 58 BLocker fLocker; 59 void* (*fAlloc)(size_t size); 60 void (*fFree)(void *pointer); 61 uint32 _reserved[2]; 62 }; 63 64 65 #endif // _BLOCK_CACHE_H 66