sys/h/text.h

/*      text.h  4.4     81/03/09        */

/*
 * Text structure.
 * One allocated per pure
 * procedure on swap device.
 * Manipulated by text.c
 */
#define NXDAD   12              /* param.h:MAXTSIZ / dmap.h:DMTEXT */

struct text
{
        swblk_t x_daddr[NXDAD]; /* disk addresses of DMTEXT-page segments */
        swblk_t x_ptdaddr;      /* disk address of page table */
        size_t  x_size;         /* size (clicks) */
        struct proc *x_caddr;   /* ptr to linked proc, if loaded */
        struct inode *x_iptr;   /* inode of prototype */
        short   x_rssize;
        short   x_swrss;
        char    x_count;        /* reference count */
        char    x_ccount;       /* number of loaded references */
        char    x_flag;         /* traced, written flags */
        char    x_slptime;
        short   x_poip;         /* page out in progress count */
};

#ifdef  KERNEL
struct  text *text, *textNTEXT;
int     ntext;
#endif

#define XTRC    01              /* Text may be written, exclusive use */
#define XWRIT   02              /* Text written into, must swap out */
#define XLOAD   04              /* Currently being read from file */
#define XLOCK   010             /* Being swapped in or out */
#define XWANT   020             /* Wanted for swapping */
#define XPAGI   040             /* Page in on demand from inode */