1/* $NetBSD: rf_general.h,v 1.21 2014/03/25 16:19:14 christos Exp $ */
2/*
3 * Copyright (c) 1995 Carnegie-Mellon University.
4 * All rights reserved.
5 *
6 * Author: Mark Holland
7 *
8 * Permission to use, copy, modify and distribute this software and
9 * its documentation is hereby granted, provided that both the copyright
10 * notice and this permission notice appear in all copies of the
11 * software, derivative works or modified versions, and any portions
12 * thereof, and that both notices appear in supporting documentation.
13 *
14 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
15 * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
16 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
17 *
18 * Carnegie Mellon requests users of this software to return to
19 *
20 * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
21 * School of Computer Science
22 * Carnegie Mellon University
23 * Pittsburgh PA 15213-3890
24 *
25 * any improvements or extensions that they make and grant Carnegie the
26 * rights to redistribute these changes.
27 */
28
29/*
30 * rf_general.h -- some general-use definitions
31 */
32
33/* #define NOASSERT */
34
35#ifndef _RF__RF_GENERAL_H_
36#define _RF__RF_GENERAL_H_
37
38#ifdef _KERNEL_OPT
39#include "opt_raid_diagnostic.h"
40#endif /* _KERNEL_OPT */
41
42/* error reporting and handling */
43
44#include <sys/systm.h> /* printf, snprintf, and friends */
45
46#define RF_ERRORMSG(s) printf((s))
47#define RF_ERRORMSG1(s,a) printf((s),(a))
48#define RF_ERRORMSG2(s,a,b) printf((s),(a),(b))
49#define RF_ERRORMSG3(s,a,b,c) printf((s),(a),(b),(c))
50
51void rf_print_panic_message(int, const char *);
52void rf_print_assert_panic_message(int, const char *, const char *);
53void rf_print_unable_to_init_mutex(const char *, int, int);
54void rf_print_unable_to_add_shutdown(const char *, int, int);
55
56
57extern char rf_panicbuf[];
58#define RF_PANIC() {rf_print_panic_message(__LINE__,__FILE__); panic("%s", rf_panicbuf);}
59
60#if defined(RAID_DIAGNOSTIC) || defined(__COVERITY__)
61#define RF_ASSERT(_x_) { \
62 if (!(_x_)) { \
63 rf_print_assert_panic_message(__LINE__, __FILE__, #_x_); \
64 panic(rf_panicbuf); \
65 } \
66}
67#else /* RAID_DIAGNOSTIC */
68#define RF_ASSERT(x) { /*noop*/ (void)(x); }
69#endif /* RAID_DIAGNOSTIC */
70
71/* random stuff */
72#define RF_MAX(a,b) (((a) > (b)) ? (a) : (b))
73#define RF_MIN(a,b) (((a) < (b)) ? (a) : (b))
74
75/* divide-by-zero check */
76#define RF_DB0_CHECK(a,b) ( ((b)==0) ? 0 : (a)/(b) )
77
78/* get time of day */
79#define RF_GETTIME(_t) microtime(&(_t))
80
81#define RF_UL(x) ((unsigned long) (x))
82#define RF_PGMASK PAGE_MASK
83#define RF_BLIP(x) (PAGE_SIZE - (RF_UL(x) & RF_PGMASK)) /* bytes left in page */
84#define RF_PAGE_ALIGNED(x) ((RF_UL(x) & RF_PGMASK) == 0)
85
86#ifdef __STDC__
87#define RF_STRING(_str_) #_str_
88#else /* __STDC__ */
89#define RF_STRING(_str_) "_str_"
90#endif /* __STDC__ */
91
92#endif /* !_RF__RF_GENERAL_H_ */
93