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      1 /*	$NetBSD: rf_general.h,v 1.22 2016/12/10 23:03:27 maya 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 (at) 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 #define RF_PANIC() {rf_print_panic_message(__LINE__,__FILE__);}
     58 
     59 #if defined(RAID_DIAGNOSTIC) || defined(__COVERITY__)
     60 #define RF_ASSERT(_x_) { \
     61   if (!(_x_)) { \
     62     rf_print_assert_panic_message(__LINE__, __FILE__, #_x_); \
     63   } \
     64 }
     65 #else /* RAID_DIAGNOSTIC */
     66 #define RF_ASSERT(x) { /*noop*/ (void)(x); }
     67 #endif /* RAID_DIAGNOSTIC */
     68 
     69 /* random stuff */
     70 #define RF_MAX(a,b) (((a) > (b)) ? (a) : (b))
     71 #define RF_MIN(a,b) (((a) < (b)) ? (a) : (b))
     72 
     73 /* divide-by-zero check */
     74 #define RF_DB0_CHECK(a,b) ( ((b)==0) ? 0 : (a)/(b) )
     75 
     76 /* get time of day */
     77 #define RF_GETTIME(_t) microtime(&(_t))
     78 
     79 #define RF_UL(x)           ((unsigned long) (x))
     80 #define RF_PGMASK          PAGE_MASK
     81 #define RF_BLIP(x)         (PAGE_SIZE - (RF_UL(x) & RF_PGMASK))	/* bytes left in page */
     82 #define RF_PAGE_ALIGNED(x) ((RF_UL(x) & RF_PGMASK) == 0)
     83 
     84 #ifdef __STDC__
     85 #define RF_STRING(_str_) #_str_
     86 #else				/* __STDC__ */
     87 #define RF_STRING(_str_) "_str_"
     88 #endif				/* __STDC__ */
     89 
     90 #endif				/* !_RF__RF_GENERAL_H_ */
     91