92 lines
1.7 KiB
C++
92 lines
1.7 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__BUFFER_CACHE_H_
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#define _PACKAGE__HPKG__PRIVATE__BUFFER_CACHE_H_
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#include <stddef.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 : public DoublyLinkedListLinkImpl<CachedBuffer> {
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public:
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CachedBuffer(size_t size);
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~CachedBuffer();
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void* Buffer() const { return fBuffer; }
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size_t Size() const { return fSize; }
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// implementation private
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CachedBuffer** Owner() const { return fOwner; }
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void SetOwner(CachedBuffer** owner)
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{ fOwner = owner; }
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void SetCached(bool cached) { fCached = cached; }
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bool IsCached() const { return fCached; }
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private:
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CachedBuffer** fOwner;
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void* fBuffer;
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size_t fSize;
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bool fCached;
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};
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class CachedBufferPutter {
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public:
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CachedBufferPutter(BBufferCache* cache, CachedBuffer** owner)
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:
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fCache(cache),
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fOwner(owner),
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fBuffer(NULL)
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{
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}
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CachedBufferPutter(BBufferCache* cache, CachedBuffer* buffer)
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:
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fCache(cache),
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fOwner(NULL),
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fBuffer(buffer)
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{
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}
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~CachedBufferPutter()
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{
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if (fCache != NULL) {
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if (fOwner != NULL)
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fCache->PutBufferAndCache(fOwner);
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else if (fBuffer != NULL)
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fCache->PutBuffer(&fBuffer);
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}
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}
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private:
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BBufferCache* fCache;
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CachedBuffer** fOwner;
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CachedBuffer* fBuffer;
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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__BUFFER_CACHE_H_
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