#ifndef BUFFER_H
#define BUFFER_H
#include <iostream.h>
#include "linktable.h"
#include "locker.h"

const int E_OK    = 0;
const int E_FALSE = -1;
const long C_MAX_BUFFERNUM   =  10000;

//存取數據結構
typedef struct
{
        unsigned char *data;
        int datalen;
}BUFFER;

class CBUFFER
{
      private:  
              LNode* ReadHead;         //讀取頭指針
              int AppendReadTable(int index);
              int DeleteReadTable(int index);
              int FindReadNode();

              LNode* WriteHead;        //寫入頭指針
              int AppendWriteTable(int index);
              int DeleteWriteTable(int index);
              int FindWriteNode();
              //
              LINKTABLE linktable;
              Locker    bufferlock;
      private:
              BUFFER m_buff[C_MAX_BUFFERNUM];
              BUFFER *m_pointerbuff;
              void Initialize();
      public:
              CBUFFER();
              ~CBUFFER();
              int WriteData(unsigned char *data,int len);
              unsigned char *ReadData(int number);
              unsigned char *ReadData();
              int IsEmpty();
      protected:

};

#endif