mirror of
https://review.haiku-os.org/haiku
synced 2025-01-24 07:14:48 +01:00
55 lines
1.1 KiB
C
55 lines
1.1 KiB
C
|
/*
|
||
|
|
* Copyright 2009, Ingo Weinhold, ingo_weinhold@gmx.de.
|
||
|
|
* Distributed under the terms of the MIT License.
|
||
|
|
*/
|
||
|
|
#ifndef _PACKAGE__HPKG__BUFFER_CACHE_H_
|
||
|
|
#define _PACKAGE__HPKG__BUFFER_CACHE_H_
|
||
|
|
|
||
|
|
|
||
|
|
#include <stddef.h>
|
||
|
|
|
||
|
|
|
||
|
|
namespace BPackageKit {
|
||
|
|
|
||
|
|
namespace BHPKG {
|
||
|
|
|
||
|
|
|
||
|
|
namespace BPrivate {
|
||
|
|
class CachedBuffer;
|
||
|
|
}
|
||
|
|
using BPrivate::CachedBuffer;
|
||
|
|
|
||
|
|
|
||
|
|
class BBufferCache {
|
||
|
|
public:
|
||
|
|
virtual ~BBufferCache();
|
||
|
|
|
||
|
|
virtual CachedBuffer* GetBuffer(size_t size,
|
||
|
|
CachedBuffer** owner = NULL,
|
||
|
|
bool* _newBuffer = NULL) = 0;
|
||
|
|
virtual void PutBufferAndCache(CachedBuffer** owner) = 0;
|
||
|
|
// caller is buffer owner and wants the
|
||
|
|
// buffer cached, if possible
|
||
|
|
virtual void PutBuffer(CachedBuffer** owner) = 0;
|
||
|
|
// puts the buffer for good, owner might
|
||
|
|
// have called PutBufferAndCache() before
|
||
|
|
// and might not own a buffer anymore
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
class BBufferCacheLockable {
|
||
|
|
public:
|
||
|
|
virtual ~BBufferCacheLockable();
|
||
|
|
|
||
|
|
virtual bool Lock() = 0;
|
||
|
|
virtual void Unlock() = 0;
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
} // namespace BHPKG
|
||
|
|
|
||
|
|
} // namespace BPackageKit
|
||
|
|
|
||
|
|
|
||
|
|
#endif // _PACKAGE__HPKG__BUFFER_CACHE_H_
|