mdw@git.distorted.org.uk Git - jog/blob - err.h

   1 /* -*-c-*-
   2  *
   3  * $Id: err.h,v 1.1 2002/01/25 19:34:45 mdw Exp $
   4  *
   5  * Error reporting
   6  *
   7  * (c) 2001 Mark Wooding
   8  */
   9
  10 /*----- Licensing notice --------------------------------------------------*
  11  *
  12  * This file is part of Jog: Programming for a jogging machine.
  13  *
  14  * Jog is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * Jog is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with Jog; if not, write to the Free Software Foundation,
  26  * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  27  */
  28
  29 /*----- Revision history --------------------------------------------------*
  30  *
  31  * $Log: err.h,v $
  32  * Revision 1.1  2002/01/25 19:34:45  mdw
  33  * Initial revision
  34  *
  35  */
  36
  37 #ifndef ERR_H
  38 #define ERR_H
  39
  40 #ifdef __cplusplus
  41   extern "C" {
  42 #endif
  43
  44 /*----- Header files ------------------------------------------------------*/
  45
  46 #ifdef HAVE_CONFIG_H
  47 #  include "config.h"
  48 #endif
  49
  50 #include <stdarg.h>
  51
  52 /*----- Error codes -------------------------------------------------------*/
  53
  54 /* --- Abort codes --- *
  55  *
  56  * Only for the most serious errors, pertaining to the log file.
  57  */
  58
  59 #define ERRABORT_LOGOPEN 1u             /* Log file wouldn't open */
  60 #define ERRABORT_LOGWRITE 2u            /* Couldn't write to log file */
  61
  62 /* --- Error contexts and reason codes --- *
  63  *
  64  * Most errors are reported as a group of three numeric codes.  These are, in
  65  * order:
  66  *
  67  *   * the `context' code, which describes where whatever it was went wrong
  68  *     went wrong;
  69  *
  70  *   * the `reason' code (specific to a particular context), which describes
  71  *     what the program was trying to do at the time; and
  72  *
  73  *   * the `error' code (again specific to a particular context, but usually
  74  *     an @errno@ error code), which explains what the problem actually was.
  75  */
  76
  77 #define ERR_EXC 1u                      /* mLib exception error code */
  78   /* Reason code is zero; error code is exception number */
  79
  80 #define ERR_RXGLUE 2u                   /* REXX interface stuff */
  81 #  define ERRRX_SCRIPTREAD 1u           /* Problem reading script file */
  82 #  define ERRRX_INTERP 2u               /* Error code from interpreter */
  83 #  define ERRRX_INIT 3u                 /* Initialization error */
  84
  85 #define ERR_RXERR 3u                    /* REXX error */
  86   /* Reason code is line number; error code is REXX error number */
  87
  88 #define ERR_TXPORT 4u                   /* Transport switch stuff */
  89 #  define ERRTX_BADTX 1u                /* Unknown transport name */
  90 #  define ERRTX_CREATE 2u               /* Error creating transport */
  91 #  define ERRTX_WRITE 3u                /* Error writing to transport */
  92 #  define ERRTX_READ 4u                 /* Read error from transport */
  93 #  define ERRTX_CONFIG 5u               /* Error in configuration */
  94
  95 /*----- Functions provided ------------------------------------------------*/
  96
  97 /* --- @err_abort@ --- *
  98  *
  99  * Arguments:   @int reason@ = abort reason code
 100  *              @unsigned long err@ = abort error code
 101  *              @const char *msg@ = error message
 102  *
 103  * Returns:     Doesn't.
 104  *
 105  * Use:         Reports a fatal error.
 106  */
 107
 108 extern void err_abortv(int /*reason*/, unsigned long /*err*/,
 109                        const char */*msg*/, va_list */*ap*/);
 110
 111 extern void err_abort(int /*reason*/, unsigned long /*err*/,
 112                       const char */*msg*/, ...);
 113
 114 /* --- @err_init@ --- *
 115  *
 116  * Arguments:   ---
 117  *
 118  * Returns:     ---
 119  *
 120  * Use:         Attempts to initialize the logging system.  It is a
 121  *              catastrophic failure if logging can't start up.
 122  */
 123
 124 extern void err_init(void);
 125
 126 /* --- @err_report@ --- *
 127  *
 128  * Arguments:   @int ctx@ = context code
 129  *              @int reason@ = reason code
 130  *              @unsigned long err@ = system error code
 131  *              @const char *msg@ = textual message to log
 132  *
 133  * Returns:     ---
 134  *
 135  * Use:         Reports an error.  Doesn't abort anything unless something
 136  *              really serious happens.
 137  */
 138
 139 extern void err_reportv(int /*ctx*/, int /*reason*/, unsigned long /*err*/,
 140                         const char */*msg*/, va_list */*ap*/);
 141
 142 extern void err_report(int /*ctx*/, int /*reason*/, unsigned long /*err*/,
 143                        const char */*msg*/, ...);
 144
 145 /* --- @err_log@ --- *
 146  *
 147  * Arguments:    @const char *msg@ = textual message to log
 148  *
 149  * Returns:     ---
 150  *
 151  * Use:         Logs a message.
 152  */
 153
 154 extern void err_logv(const char */*msg*/, va_list */*ap*/);
 155
 156 extern void err_log(const char */*msg*/, ...);
 157
 158 /*----- That's all, folks -------------------------------------------------*/
 159
 160 #ifdef __cplusplus
 161   }
 162 #endif
 163
 164 #endif