gdb/complaints.c

   1 /* Support for complaint handling during symbol reading in GDB.
   2    Copyright 1990, 1991, 1992, 1993, 1995, 1998, 1999, 2000
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #include "defs.h"
  23 #include "complaints.h"
  24 #include "gdbcmd.h"
  25
  26 extern void _initialize_complaints (void);
  27
  28 /* Structure to manage complaints about symbol file contents.  */
  29
  30 struct complaint complaint_root[1] =
  31 {
  32   {
  33     (char *) NULL,              /* Complaint message */
  34     0,                          /* Complaint counter */
  35     complaint_root              /* Next complaint. */
  36   }
  37 };
  38
  39 /* How many complaints about a particular thing should be printed before
  40    we stop whining about it?  Default is no whining at all, since so many
  41    systems have ill-constructed symbol files.  */
  42
  43 static unsigned int stop_whining = 0;
  44
  45 /* Should each complaint be self explanatory, or should we assume that
  46    a series of complaints is being produced?
  47    case 0:  self explanatory message.
  48    case 1:  First message of a series that must start off with explanation.
  49    case 2:  Subsequent message, when user already knows we are reading
  50    symbols and we can just state our piece.  */
  51
  52 static int complaint_series = 0;
  53
  54 \f
  55
  56 /* Functions to handle complaints during symbol reading.  */
  57
  58 /* Print a complaint about the input symbols, and link the complaint block
  59    into a chain for later handling.  */
  60
  61 void
  62 complain (struct complaint *complaint,...)
  63 {
  64   va_list args;
  65   va_start (args, complaint);
  66
  67   complaint->counter++;
  68   if (complaint->next == NULL)
  69     {
  70       complaint->next = complaint_root->next;
  71       complaint_root->next = complaint;
  72     }
  73   if (complaint->counter > stop_whining)
  74     {
  75       return;
  76     }
  77   wrap_here ("");
  78
  79   switch (complaint_series + (info_verbose << 1))
  80     {
  81
  82       /* Isolated messages, must be self-explanatory.  */
  83     case 0:
  84       if (warning_hook)
  85         (*warning_hook) (complaint->message, args);
  86       else
  87         {
  88           begin_line ();
  89           fputs_filtered ("During symbol reading, ", gdb_stderr);
  90           wrap_here ("");
  91           vfprintf_filtered (gdb_stderr, complaint->message, args);
  92           fputs_filtered (".\n", gdb_stderr);
  93         }
  94       break;
  95
  96       /* First of a series, without `set verbose'.  */
  97     case 1:
  98       if (warning_hook)
  99         (*warning_hook) (complaint->message, args);
 100       else
 101         {
 102           begin_line ();
 103           fputs_filtered ("During symbol reading...", gdb_stderr);
 104           vfprintf_filtered (gdb_stderr, complaint->message, args);
 105           fputs_filtered ("...", gdb_stderr);
 106           wrap_here ("");
 107           complaint_series++;
 108         }
 109       break;
 110
 111       /* Subsequent messages of a series, or messages under `set verbose'.
 112          (We'll already have produced a "Reading in symbols for XXX..."
 113          message and will clean up at the end with a newline.)  */
 114     default:
 115       if (warning_hook)
 116         (*warning_hook) (complaint->message, args);
 117       else
 118         {
 119           vfprintf_filtered (gdb_stderr, complaint->message, args);
 120           fputs_filtered ("...", gdb_stderr);
 121           wrap_here ("");
 122         }
 123     }
 124   /* If GDB dumps core, we'd like to see the complaints first.  Presumably
 125      GDB will not be sending so many complaints that this becomes a
 126      performance hog.  */
 127   gdb_flush (gdb_stderr);
 128   va_end (args);
 129 }
 130
 131 /* Clear out all complaint counters that have ever been incremented.
 132    If sym_reading is 1, be less verbose about successive complaints,
 133    since the messages are appearing all together during a command that
 134    reads symbols (rather than scattered around as psymtabs get fleshed
 135    out into symtabs at random times).  If noisy is 1, we are in a
 136    noisy symbol reading command, and our caller will print enough
 137    context for the user to figure it out.  */
 138
 139 void
 140 clear_complaints (int sym_reading, int noisy)
 141 {
 142   struct complaint *p;
 143
 144   for (p = complaint_root->next; p != complaint_root; p = p->next)
 145     {
 146       p->counter = 0;
 147     }
 148
 149   if (!sym_reading && !noisy && complaint_series > 1 && !warning_hook)
 150     {
 151       /* Terminate previous series, since caller won't.  */
 152       puts_filtered ("\n");
 153     }
 154
 155   complaint_series = sym_reading ? 1 + noisy : 0;
 156 }
 157
 158 void
 159 _initialize_complaints (void)
 160 {
 161   add_show_from_set
 162     (add_set_cmd ("complaints", class_support, var_zinteger,
 163                   (char *) &stop_whining,
 164                   "Set max number of complaints about incorrect symbols.",
 165                   &setlist),
 166      &showlist);
 167
 168 }