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Annotation of 43BSD/sys/h/text.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1982, 1986 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  *
        !             6:  *     @(#)text.h      7.1 (Berkeley) 6/4/86
        !             7:  */
        !             8: 
        !             9: /*
        !            10:  * Text structure.
        !            11:  * One allocated per pure
        !            12:  * procedure on swap device.
        !            13:  * Manipulated by text.c
        !            14:  */
        !            15: #define        NXDAD   12              /* param.h:MAXTSIZ / vmparam.h:DMTEXT */
        !            16: 
        !            17: struct text
        !            18: {
        !            19:        struct  text *x_forw;   /* forward link in free list */
        !            20:        struct  text **x_back;  /* backward link in free list */
        !            21:        swblk_t x_daddr[NXDAD]; /* disk addresses of dmtext-page segments */
        !            22:        swblk_t x_ptdaddr;      /* disk address of page table */
        !            23:        size_t  x_size;         /* size (clicks) */
        !            24:        struct proc *x_caddr;   /* ptr to linked proc, if loaded */
        !            25:        struct inode *x_iptr;   /* inode of prototype */
        !            26:        short   x_rssize;
        !            27:        short   x_swrss;
        !            28:        short   x_count;        /* reference count */
        !            29:        short   x_ccount;       /* number of loaded references */
        !            30:        char    x_flag;         /* traced, written flags */
        !            31:        char    x_slptime;
        !            32:        short   x_poip;         /* page out in progress count */
        !            33: };
        !            34: 
        !            35: #ifdef KERNEL
        !            36: struct text *text, *textNTEXT;
        !            37: int    ntext;
        !            38: #endif
        !            39: 
        !            40: #define        XTRC    0x01            /* Text may be written, exclusive use */
        !            41: #define        XWRIT   0x02            /* Text written into, must swap out */
        !            42: #define        XLOAD   0x04            /* Currently being read from file */
        !            43: #define        XLOCK   0x08            /* Being swapped in or out */
        !            44: #define        XWANT   0x10            /* Wanted for swapping */
        !            45: #define        XPAGI   0x20            /* Page in on demand from inode */
        !            46: #define        XUNUSED 0x40            /* unused since swapped out for cache */
        !            47: 
        !            48: /*
        !            49:  * Text table statistics
        !            50:  */
        !            51: struct xstats {
        !            52:        u_long  alloc;                  /* calls to xalloc */
        !            53:        u_long  alloc_inuse;            /*      found in use/sticky */
        !            54:        u_long  alloc_cachehit;         /*      found in cache */
        !            55:        u_long  alloc_cacheflush;       /*      flushed cached text */
        !            56:        u_long  alloc_unused;           /*      flushed unused cached text */
        !            57:        u_long  free;                   /* calls to xfree */
        !            58:        u_long  free_inuse;             /*      still in use/sticky */
        !            59:        u_long  free_cache;             /*      placed in cache */
        !            60:        u_long  free_cacheswap;         /*      swapped out to place in cache */
        !            61: };

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