* Copyright 2005, Ingo Weinhold <bonefish@cs.tu-berlin.de>.
* All rights reserved. Distributed under the terms of the MIT License.
*/
#ifndef _BOOT_NET_CHAIN_BUFFER_H
#define _BOOT_NET_CHAIN_BUFFER_H
#include <SupportDefs.h>
class ChainBuffer {
public:
ChainBuffer(void *data = 0, uint32 size = 0, ChainBuffer *next = NULL,
bool freeData = false);
~ChainBuffer();
void *Data() const { return fData; }
uint32 Size() const { return fSize; }
uint32 TotalSize() const { return fTotalSize; }
ChainBuffer *Next() const { return fNext; }
ChainBuffer *DetachNext();
void Append(ChainBuffer *next);
void Flatten(void *_buffer) const;
private:
enum {
CHAIN_BUFFER_HEAD = 0x1,
CHAIN_BUFFER_EMBEDDED_DATA = 0x2,
CHAIN_BUFFER_FREE_DATA = 0x4,
CHAIN_BUFFER_ON_STACK = 0x8,
};
void _Init(void *data, uint32 size, ChainBuffer *next, uint32 flags);
void _Destroy();
uint32 fFlags:4;
uint32 fSize:14;
uint32 fTotalSize:14;
void *fData;
ChainBuffer *fNext;
uint8 fBuffer[0];
};
#endif
