gdb/complaints.c

   1 /* Support for complaint handling during symbol reading in GDB.
   2    Copyright (C) 1990, 1991, 1992  Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include "defs.h"
  22 #include "complaints.h"
  23 #include "gdbcmd.h"
  24
  25 extern void _initialize_complaints (void);
  26
  27 /* Structure to manage complaints about symbol file contents.  */
  28
  29 struct complaint complaint_root[1] =
  30 {
  31   {
  32     (char *) NULL,              /* Complaint message */
  33     0,                          /* Complaint counter */
  34     complaint_root              /* Next complaint. */
  35   }
  36 };
  37
  38 /* How many complaints about a particular thing should be printed before
  39    we stop whining about it?  Default is no whining at all, since so many
  40    systems have ill-constructed symbol files.  */
  41
  42 static unsigned int stop_whining = 0;
  43
  44 /* Should each complaint be self explanatory, or should we assume that
  45    a series of complaints is being produced?
  46    case 0:  self explanatory message.
  47    case 1:  First message of a series that must start off with explanation.
  48    case 2:  Subsequent message, when user already knows we are reading
  49    symbols and we can just state our piece.  */
  50
  51 static int complaint_series = 0;
  52
  53 /* External variables and functions referenced. */
  54
  55 extern int info_verbose;
  56 \f
  57
  58 /* Functions to handle complaints during symbol reading.  */
  59
  60 /* Print a complaint about the input symbols, and link the complaint block
  61    into a chain for later handling.  */
  62
  63 void
  64 complain (struct complaint *complaint,...)
  65 {
  66   va_list args;
  67   va_start (args, complaint);
  68
  69   complaint->counter++;
  70   if (complaint->next == NULL)
  71     {
  72       complaint->next = complaint_root->next;
  73       complaint_root->next = complaint;
  74     }
  75   if (complaint->counter > stop_whining)
  76     {
  77       return;
  78     }
  79   wrap_here ("");
  80
  81   switch (complaint_series + (info_verbose << 1))
  82     {
  83
  84       /* Isolated messages, must be self-explanatory.  */
  85     case 0:
  86       if (warning_hook)
  87         (*warning_hook) (complaint->message, args);
  88       else
  89         {
  90           begin_line ();
  91           fputs_filtered ("During symbol reading, ", gdb_stderr);
  92           wrap_here ("");
  93           vfprintf_filtered (gdb_stderr, complaint->message, args);
  94           fputs_filtered (".\n", gdb_stderr);
  95         }
  96       break;
  97
  98       /* First of a series, without `set verbose'.  */
  99     case 1:
 100       if (warning_hook)
 101         (*warning_hook) (complaint->message, args);
 102       else
 103         {
 104           begin_line ();
 105           fputs_filtered ("During symbol reading...", gdb_stderr);
 106           vfprintf_filtered (gdb_stderr, complaint->message, args);
 107           fputs_filtered ("...", gdb_stderr);
 108           wrap_here ("");
 109           complaint_series++;
 110         }
 111       break;
 112
 113       /* Subsequent messages of a series, or messages under `set verbose'.
 114          (We'll already have produced a "Reading in symbols for XXX..."
 115          message and will clean up at the end with a newline.)  */
 116     default:
 117       if (warning_hook)
 118         (*warning_hook) (complaint->message, args);
 119       else
 120         {
 121           vfprintf_filtered (gdb_stderr, complaint->message, args);
 122           fputs_filtered ("...", gdb_stderr);
 123           wrap_here ("");
 124         }
 125     }
 126   /* If GDB dumps core, we'd like to see the complaints first.  Presumably
 127      GDB will not be sending so many complaints that this becomes a
 128      performance hog.  */
 129   gdb_flush (gdb_stderr);
 130   va_end (args);
 131 }
 132
 133 /* Clear out all complaint counters that have ever been incremented.
 134    If sym_reading is 1, be less verbose about successive complaints,
 135    since the messages are appearing all together during a command that
 136    reads symbols (rather than scattered around as psymtabs get fleshed
 137    out into symtabs at random times).  If noisy is 1, we are in a
 138    noisy symbol reading command, and our caller will print enough
 139    context for the user to figure it out.  */
 140
 141 void
 142 clear_complaints (int sym_reading, int noisy)
 143 {
 144   struct complaint *p;
 145
 146   for (p = complaint_root->next; p != complaint_root; p = p->next)
 147     {
 148       p->counter = 0;
 149     }
 150
 151   if (!sym_reading && !noisy && complaint_series > 1 && !warning_hook)
 152     {
 153       /* Terminate previous series, since caller won't.  */
 154       puts_filtered ("\n");
 155     }
 156
 157   complaint_series = sym_reading ? 1 + noisy : 0;
 158 }
 159
 160 void
 161 _initialize_complaints (void)
 162 {
 163   add_show_from_set
 164     (add_set_cmd ("complaints", class_support, var_zinteger,
 165                   (char *) &stop_whining,
 166                   "Set max number of complaints about incorrect symbols.",
 167                   &setlist),
 168      &showlist);
 169
 170 }