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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #include "defs.h"
  21 #include "complaints.h"
  22 #include "gdbcmd.h"
  23 #include <varargs.h>
  24
  25 /* Structure to manage complaints about symbol file contents.  */
  26
  27 struct complaint complaint_root[1] = {
  28   {
  29     (char *) NULL,      /* Complaint message */
  30     0,                  /* Complaint counter */
  31     complaint_root      /* Next complaint. */
  32   }
  33 };
  34
  35 /* How many complaints about a particular thing should be printed before
  36    we stop whining about it?  Default is no whining at all, since so many
  37    systems have ill-constructed symbol files.  */
  38
  39 static unsigned int stop_whining = 0;
  40
  41 /* Should each complaint be self explanatory, or should we assume that
  42    a series of complaints is being produced?
  43    case 0:  self explanatory message.
  44    case 1:  First message of a series that must start off with explanation.
  45    case 2:  Subsequent message, when user already knows we are reading
  46             symbols and we can just state our piece.  */
  47
  48 static int complaint_series = 0;
  49
  50 /* External variables and functions referenced. */
  51
  52 extern int info_verbose;
  53
  54 \f
  55 /* Functions to handle complaints during symbol reading.  */
  56
  57 /* Print a complaint about the input symbols, and link the complaint block
  58    into a chain for later handling.  */
  59
  60 /* VARARGS */
  61 void
  62 complain (va_alist)
  63      va_dcl
  64 {
  65   va_list args;
  66   struct complaint *complaint;
  67
  68   va_start (args);
  69   complaint = va_arg (args, struct complaint *);
  70   complaint -> counter++;
  71   if (complaint -> next == NULL)
  72     {
  73       complaint -> next = complaint_root -> next;
  74       complaint_root -> next = complaint;
  75     }
  76   if (complaint -> counter > stop_whining)
  77     {
  78       return;
  79     }
  80   wrap_here ("");
  81
  82   switch (complaint_series + (info_verbose << 1))
  83     {
  84
  85       /* Isolated messages, must be self-explanatory.  */
  86       case 0:
  87         begin_line ();
  88         puts_filtered ("During symbol reading, ");
  89         wrap_here ("");
  90         vprintf_filtered (complaint -> message, args);
  91         puts_filtered (".\n");
  92         break;
  93
  94       /* First of a series, without `set verbose'.  */
  95       case 1:
  96         begin_line ();
  97         puts_filtered ("During symbol reading...");
  98         vprintf_filtered (complaint -> message, args);
  99         puts_filtered ("...");
 100         wrap_here ("");
 101         complaint_series++;
 102         break;
 103
 104       /* Subsequent messages of a series, or messages under `set verbose'.
 105          (We'll already have produced a "Reading in symbols for XXX..."
 106          message and will clean up at the end with a newline.)  */
 107       default:
 108         vprintf_filtered (complaint -> message, args);
 109         puts_filtered ("...");
 110         wrap_here ("");
 111     }
 112   /* If GDB dumps core, we'd like to see the complaints first.  Presumably
 113      GDB will not be sending so many complaints that this becomes a
 114      performance hog.  */
 115   fflush (stdout);
 116   va_end (args);
 117 }
 118
 119 /* Clear out all complaint counters that have ever been incremented.
 120    If sym_reading is 1, be less verbose about successive complaints,
 121    since the messages are appearing all together during a command that
 122    reads symbols (rather than scattered around as psymtabs get fleshed
 123    out into symtabs at random times).  If noisy is 1, we are in a
 124    noisy symbol reading command, and our caller will print enough
 125    context for the user to figure it out.  */
 126
 127 void
 128 clear_complaints (sym_reading, noisy)
 129      int sym_reading;
 130      int noisy;
 131 {
 132   struct complaint *p;
 133
 134   for (p = complaint_root -> next; p != complaint_root; p = p -> next)
 135     {
 136       p -> counter = 0;
 137     }
 138
 139   if (!sym_reading && !noisy && complaint_series > 1)
 140     {
 141       /* Terminate previous series, since caller won't.  */
 142       puts_filtered ("\n");
 143     }
 144
 145   complaint_series = sym_reading ? 1 + noisy : 0;
 146 }
 147
 148 void
 149 _initialize_complaints ()
 150 {
 151   add_show_from_set
 152     (add_set_cmd ("complaints", class_support, var_zinteger,
 153                   (char *) &stop_whining,
 154                   "Set max number of complaints about incorrect symbols.",
 155                   &setlist),
 156      &showlist);
 157
 158 }