FreeBSD/Linux Kernel Cross Reference
sys/dev/raidframe/rf_general.h

     /*      $NetBSD: rf_general.h,v 1.13 2004/01/01 20:39:58 oster Exp $    */
     /*
      * Copyright (c) 1995 Carnegie-Mellon University.
      * All rights reserved.
      *
      * Author: Mark Holland
      *
      * Permission to use, copy, modify and distribute this software and
      * its documentation is hereby granted, provided that both the copyright
     * notice and this permission notice appear in all copies of the
     * software, derivative works or modified versions, and any portions
     * thereof, and that both notices appear in supporting documentation.
     *
     * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     *
     * Carnegie Mellon requests users of this software to return to
     *
     *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
     *  School of Computer Science
     *  Carnegie Mellon University
     *  Pittsburgh PA 15213-3890
     *
     * any improvements or extensions that they make and grant Carnegie the
     * rights to redistribute these changes.
     */
    
    /*
     * rf_general.h -- some general-use definitions
     */
    
    /* #define NOASSERT */
    
    #ifndef _RF__RF_GENERAL_H_
    #define _RF__RF_GENERAL_H_
    
    #ifdef _KERNEL_OPT
    #include "opt_raid_diagnostic.h"
    #endif /* _KERNEL_OPT */
    
    /* error reporting and handling */
    
    #include <sys/systm.h>          /* printf, sprintf, and friends */
    #include <uvm/uvm_extern.h>     /* PAGE_SIZE, PAGE_MASK */
    
    #define RF_ERRORMSG(s)            printf((s))
    #define RF_ERRORMSG1(s,a)         printf((s),(a))
    #define RF_ERRORMSG2(s,a,b)       printf((s),(a),(b))
    #define RF_ERRORMSG3(s,a,b,c)     printf((s),(a),(b),(c))
    
    void rf_print_panic_message(int, char *);
    void rf_print_assert_panic_message(int, char *, char *);
    void rf_print_unable_to_init_mutex(char *, int, int);
    void rf_print_unable_to_add_shutdown(char *, int, int);
    
            
    extern char rf_panicbuf[];
    #define RF_PANIC() {rf_print_panic_message(__LINE__,__FILE__); panic(rf_panicbuf);}
    
    #ifdef RAID_DIAGNOSTIC
    #define RF_ASSERT(_x_) { \
      if (!(_x_)) { \
        rf_print_assert_panic_message(__LINE__, __FILE__, #_x_); \
        panic(rf_panicbuf); \
      } \
    }
    #else /* RAID_DIAGNOSTIC */
    #define RF_ASSERT(x) {/*noop*/}
    #endif /* RAID_DIAGNOSTIC */
    
    /* random stuff */
    #define RF_MAX(a,b) (((a) > (b)) ? (a) : (b))
    #define RF_MIN(a,b) (((a) < (b)) ? (a) : (b))
    
    /* divide-by-zero check */
    #define RF_DB0_CHECK(a,b) ( ((b)==0) ? 0 : (a)/(b) )
    
    /* get time of day */
    #define RF_GETTIME(_t) microtime(&(_t))
    
    #define RF_UL(x)           ((unsigned long) (x))
    #define RF_PGMASK          PAGE_MASK
    #define RF_BLIP(x)         (PAGE_SIZE - (RF_UL(x) & RF_PGMASK)) /* bytes left in page */
    #define RF_PAGE_ALIGNED(x) ((RF_UL(x) & RF_PGMASK) == 0)
    
    #ifdef __STDC__
    #define RF_STRING(_str_) #_str_
    #else                           /* __STDC__ */
    #define RF_STRING(_str_) "_str_"
    #endif                          /* __STDC__ */
    
    #endif                          /* !_RF__RF_GENERAL_H_ */

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