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Annotation of researchv10dc/lsys/sys/text.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Text structure.
        !             3:  * One allocated per pure
        !             4:  * procedure on swap device.
        !             5:  * Manipulated by text.c
        !             6:  */
        !             7: #define        NXDAD   12              /* param.h:MAXTSIZ / dmap.h:DMTEXT */
        !             8: 
        !             9: struct text
        !            10: {
        !            11:        swblk_t x_daddr[NXDAD]; /* disk addresses of dmtext-page segments */
        !            12:        swblk_t x_ptdaddr;      /* disk address of page table */
        !            13:        clicks_t        x_size;         /* size (clicks) */
        !            14:        struct proc *x_caddr;   /* ptr to linked proc, if loaded */
        !            15:        struct inode *x_iptr;   /* inode of prototype */
        !            16:        short   x_rssize;
        !            17:        short   x_swrss;
        !            18:        short   x_count;        /* reference count */
        !            19:        short   x_ccount;       /* number of loaded references */
        !            20:        char    x_flag;         /* traced, written flags */
        !            21:        char    x_slptime;
        !            22:        short   x_poip;         /* page out in progress count */
        !            23: };
        !            24: 
        !            25: #ifdef KERNEL
        !            26: extern struct text text[];
        !            27: struct text *textNTEXT;
        !            28: extern int textcnt;
        !            29: extern int dmtext;
        !            30: #endif
        !            31: 
        !            32: #define        XTRC    01              /* Text may be written, exclusive use */
        !            33: #define        XWRIT   02              /* Text written into, must swap out */
        !            34: #define        XLOAD   04              /* Currently being read from file */
        !            35: #define        XLOCK   010             /* Being swapped in or out */
        !            36: #define        XWANT   020             /* Wanted for swapping */
        !            37: #define        XPAGI   040             /* Page in on demand from inode */

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