projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 95f51977 | 1 | /* |
| 1c15e888 C |
2 | * Copyright (c) 1982, 1986, 1989 Regents of the University of California. |
| 3 | * All rights reserved. | |
| 95f51977 | 4 | * |
| 1c15e888 C |
5 | * Redistribution is only permitted until one year after the first shipment |
| 6 | * of 4.4BSD by the Regents. Otherwise, redistribution and use in source and | |
| 7 | * binary forms are permitted provided that: (1) source distributions retain | |
| 8 | * this entire copyright notice and comment, and (2) distributions including | |
| 9 | * binaries display the following acknowledgement: This product includes | |
| 10 | * software developed by the University of California, Berkeley and its | |
| 11 | * contributors'' in the documentation or other materials provided with the | |
| 12 | * distribution and in all advertising materials mentioning features or use | |
| 13 | * of this software. Neither the name of the University nor the names of | |
| 14 | * its contributors may be used to endorse or promote products derived from | |
| 15 | * this software without specific prior written permission. | |
| 16 | * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED | |
| 17 | * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF | |
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
| 19 | * | |
| 20 | * @(#)text.h 7.7 (Berkeley) 6/28/90 | |
| 95f51977 | 21 | */ |
| 59703a43 C |
22 | |
| 23 | /* | |
| 24 | * Text structure. | |
| 25 | * One allocated per pure | |
| 26 | * procedure on swap device. | |
| 27 | * Manipulated by text.c | |
| 28 | */ | |
| 95f51977 | 29 | #define NXDAD 12 /* param.h:MAXTSIZ / vmparam.h:DMTEXT */ |
| 59703a43 C |
30 | |
| 31 | struct text | |
| 32 | { | |
| 95f51977 C |
33 | struct text *x_forw; /* forward link in free list */ |
| 34 | struct text **x_back; /* backward link in free list */ | |
| 35 | swblk_t x_daddr[NXDAD]; /* disk addresses of dmtext-page segments */ | |
| 59703a43 | 36 | swblk_t x_ptdaddr; /* disk address of page table */ |
| 1c15e888 | 37 | segsz_t x_size; /* size (clicks) */ |
| 59703a43 | 38 | struct proc *x_caddr; /* ptr to linked proc, if loaded */ |
| 1c15e888 C |
39 | struct vnode *x_vptr; /* vnode of prototype */ |
| 40 | time_t x_mtime; /* last time modified */ | |
| 59703a43 C |
41 | short x_rssize; |
| 42 | short x_swrss; | |
| 95f51977 C |
43 | short x_count; /* reference count */ |
| 44 | short x_ccount; /* number of loaded references */ | |
| 59703a43 C |
45 | char x_flag; /* traced, written flags */ |
| 46 | char x_slptime; | |
| 47 | short x_poip; /* page out in progress count */ | |
| ca67e7b4 C |
48 | #if defined(tahoe) |
| 49 | short x_ckey; /* code cache key */ | |
| 50 | #endif | |
| 59703a43 C |
51 | }; |
| 52 | ||
| 53 | #ifdef KERNEL | |
| 54 | struct text *text, *textNTEXT; | |
| 55 | int ntext; | |
| 56 | #endif | |
| 57 | ||
| 95f51977 C |
58 | #define XTRC 0x01 /* Text may be written, exclusive use */ |
| 59 | #define XWRIT 0x02 /* Text written into, must swap out */ | |
| 60 | #define XLOAD 0x04 /* Currently being read from file */ | |
| 61 | #define XLOCK 0x08 /* Being swapped in or out */ | |
| 62 | #define XWANT 0x10 /* Wanted for swapping */ | |
| 1c15e888 C |
63 | #define XPAGV 0x20 /* Page in on demand from vnode */ |
| 64 | #define XUNUSED 0x40 /* Unused since swapped out for cache */ | |
| 65 | #define XCACHED 0x80 /* Cached but not sticky */ | |
| 95f51977 C |
66 | |
| 67 | /* | |
| 68 | * Text table statistics | |
| 69 | */ | |
| 70 | struct xstats { | |
| 71 | u_long alloc; /* calls to xalloc */ | |
| 72 | u_long alloc_inuse; /* found in use/sticky */ | |
| 73 | u_long alloc_cachehit; /* found in cache */ | |
| 74 | u_long alloc_cacheflush; /* flushed cached text */ | |
| 75 | u_long alloc_unused; /* flushed unused cached text */ | |
| 76 | u_long free; /* calls to xfree */ | |
| 77 | u_long free_inuse; /* still in use/sticky */ | |
| 78 | u_long free_cache; /* placed in cache */ | |
| 79 | u_long free_cacheswap; /* swapped out to place in cache */ | |
| 1c15e888 | 80 | u_long purge; /* calls to xpurge */ |
| 95f51977 | 81 | }; |