3c839f3f7b
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@4396 a95241bf-73f2-0310-859d-f6bbb57e9c96
78 lines
2.2 KiB
C++
78 lines
2.2 KiB
C++
/*
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* Copyright (c) 2003 Marcus Overhagen
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _BLOCK_CACHE_H
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#define _BLOCK_CACHE_H
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#include <BeBuild.h>
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#include <Locker.h>
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/* The OpenBeOS implementation of the BBlockCache.
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* A class used to manage a pool of memory blocks.
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*/
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/* The allocation type to be used in the constructor
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*/
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enum {
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B_OBJECT_CACHE = 0,
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B_MALLOC_CACHE = 1
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};
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/* The BBlockCache class:
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*/
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class BBlockCache
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{
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public:
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BBlockCache(uint32 blockCount,
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size_t blockSize,
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uint32 allocationType);
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virtual ~BBlockCache();
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void * Get(size_t blockSize);
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void Save(void *pointer, size_t blockSize);
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/* Private or reserved functions and data
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*/
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private:
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virtual void _ReservedBlockCache1();
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virtual void _ReservedBlockCache2();
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BBlockCache(const BBlockCache &);
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BBlockCache &operator=(const BBlockCache &);
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struct _FreeBlock
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{
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uint32 magic1;
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_FreeBlock *next;
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uint32 magic2;
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};
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_FreeBlock *fFreeList;
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size_t fBlockSize;
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int32 fExcessBlocks;
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BLocker fLocker;
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void * (*fAlloc)(size_t size);
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void (*fFree)(void *pointer);
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uint32 _reserved[3];
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};
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#endif /* _BLOCK_CACHE_H */
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