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 
51 void rf_print_panic_message(int, const char *);
52 void rf_print_assert_panic_message(int, const char *, const char *);
53 void rf_print_unable_to_init_mutex(const char *, int, int);
54 void rf_print_unable_to_add_shutdown(const char *, int, int);
55 
56 
57 extern 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