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Annotation of researchv9/cmd/p/pad.h, revision 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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