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Annotation of researchv10dc/cmd/p/pad.h, revision 1.1.1.1

1.1       root        1: typedef struct _PCBL{
                      2:        struct _PCBL *Pnextp;
                      3:        struct _PCBL *Pprevp;
                      4:        char *Pbase;            /* Pointer to head of character buffer */
                      5:        char *Pptr;             /* Pointer to current read position */
                      6:        char *Phiwat;           /* Pointer to high water mark for this buffer */
                      7:        int Pcnt;               /* Phiwat-Pptr.  for speed. */
                      8: }_PCBL;                /* Pad circular buffer list */
                      9: 
                     10: typedef struct _PAD{
                     11:        _PCBL   *Pcbl;          /* Circular list for this file descriptor */
                     12:        _PCBL   *Pcbb;          /* base of list so we can free it */
                     13:        int     Pfile;          /* file descriptor */
                     14: }PAD;
                     15: 
                     16: #define        Pgetc(p)        (--(p)->Pcbl->Pcnt>=0? *(p)->Pcbl->Pptr++&0377:_Pfilbuf(p))
                     17: PAD *Pfopen();
                     18: PAD *Pfdopen();

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