68 lines
1.4 KiB
C++
68 lines
1.4 KiB
C++
/*
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* Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
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* Copyright 2011, Oliver Tappe <zooey@hirschkaefer.de>
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* Distributed under the terms of the MIT License.
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*/
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#ifndef _PACKAGE__HPKG__PRIVATE__BLOCK_BUFFER_CACHE_H_
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#define _PACKAGE__HPKG__PRIVATE__BLOCK_BUFFER_CACHE_H_
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#include <SupportDefs.h>
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#include <util/DoublyLinkedList.h>
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#include <package/hpkg/BufferCache.h>
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namespace BPackageKit {
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namespace BHPKG {
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namespace BPrivate {
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class CachedBuffer;
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class BlockBufferCacheImpl : public BBufferCache {
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public:
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BlockBufferCacheImpl(size_t blockSize,
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uint32 maxCachedBlocks,
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BBufferCacheLockable* lockable);
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~BlockBufferCacheImpl();
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status_t Init();
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CachedBuffer* GetBuffer(size_t size,
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CachedBuffer** owner = NULL,
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bool* _newBuffer = NULL);
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void PutBufferAndCache(CachedBuffer** owner);
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void PutBuffer(CachedBuffer** owner);
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private:
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typedef DoublyLinkedList<CachedBuffer> BufferList;
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private:
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CachedBuffer* _AllocateBuffer(size_t size,
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CachedBuffer** owner, bool* _newBuffer);
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// object must not be locked
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private:
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size_t fBlockSize;
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uint32 fMaxCachedBlocks;
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uint32 fAllocatedBlocks;
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BufferList fUnusedBuffers;
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BufferList fCachedBuffers;
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BBufferCacheLockable* fLockable;
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};
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} // namespace BPrivate
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} // namespace BHPKG
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} // namespace BPackageKit
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#endif // _PACKAGE__HPKG__PRIVATE__BLOCK_BUFFER_CACHE_H_
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