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15637ed4 RG |
1 | /* |
2 | * Copyright (c) 1992 William Jolitz. All rights reserved. | |
3 | * Written by William Jolitz 1/92 | |
4 | * | |
5 | * Redistribution and use in source and binary forms are freely permitted | |
6 | * provided that the above copyright notice and attribution and date of work | |
7 | * and this paragraph are duplicated in all such forms. | |
8 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
9 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
10 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
11 | * | |
12 | * Resource lists. | |
13 | * | |
14 | * Usage: | |
15 | * rlist_free(&swapmap, 100, 200); add space to swapmap | |
16 | * rlist_alloc(&swapmap, 100, &loc); obtain 100 sectors from swap | |
fea210d0 | 17 | * $Header: /a/cvs/386BSD/src/sys.386bsd/sys/rlist.h,v 1.1.1.1 1993/06/12 14:58:17 rgrimes Exp $ |
15637ed4 RG |
18 | */ |
19 | ||
20 | /* A resource list element. */ | |
21 | struct rlist { | |
22 | unsigned rl_start; /* boundaries of extent - inclusive */ | |
23 | unsigned rl_end; /* boundaries of extent - inclusive */ | |
24 | struct rlist *rl_next; /* next list entry, if present */ | |
25 | }; | |
26 | ||
27 | /* Functions to manipulate resource lists. */ | |
28 | extern rlist_free __P((struct rlist **, unsigned, unsigned)); | |
29 | int rlist_alloc __P((struct rlist **, unsigned, unsigned *)); | |
30 | extern rlist_destroy __P((struct rlist **)); | |
31 | ||
32 | ||
33 | /* heads of lists */ | |
34 | struct rlist *swapmap; |