text.h

Variables

ntext             X
text              X
textNTEXT         X

Macros

NXDAD             X
XLOAD             X
XLOCK             X
XPAGI             X
XTRC              X
XUNUSED           X
XWANT             X
XWRIT             X

struct's

text              X
xstats            X

   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: };