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, Boston, MA 02111-1307, USA.  */
  19
  20 #include "defs.h"
  21 #include "complaints.h"
  22 #include "gdbcmd.h"
  23 #ifdef ANSI_PROTOTYPES
  24 #include <stdarg.h>
  25 #else
  26 #include <varargs.h>
  27 #endif
  28
  29 /* Structure to manage complaints about symbol file contents.  */
  30
  31 struct complaint complaint_root[1] = {
  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 /* External variables and functions referenced. */
  55
  56 extern int info_verbose;
  57
  58 \f
  59 /* Functions to handle complaints during symbol reading.  */
  60
  61 /* Print a complaint about the input symbols, and link the complaint block
  62    into a chain for later handling.  */
  63
  64 /* VARARGS */
  65 void
  66 #ifdef ANSI_PROTOTYPES
  67 complain (struct complaint *complaint, ...)
  68 #else
  69 complain (va_alist)
  70      va_dcl
  71 #endif
  72 {
  73   va_list args;
  74 #ifdef ANSI_PROTOTYPES
  75   va_start (args, complaint);
  76 #else
  77   struct complaint *complaint;
  78
  79   va_start (args);
  80   complaint = va_arg (args, struct complaint *);
  81 #endif
  82
  83   complaint -> counter++;
  84   if (complaint -> next == NULL)
  85     {
  86       complaint -> next = complaint_root -> next;
  87       complaint_root -> next = complaint;
  88     }
  89   if (complaint -> counter > stop_whining)
  90     {
  91       return;
  92     }
  93   wrap_here ("");
  94
  95   switch (complaint_series + (info_verbose << 1))
  96     {
  97
  98       /* Isolated messages, must be self-explanatory.  */
  99       case 0:
 100         begin_line ();
 101         puts_filtered ("During symbol reading, ");
 102         wrap_here ("");
 103         vprintf_filtered (complaint -> message, args);
 104         puts_filtered (".\n");
 105         break;
 106
 107       /* First of a series, without `set verbose'.  */
 108       case 1:
 109         begin_line ();
 110         puts_filtered ("During symbol reading...");
 111         vprintf_filtered (complaint -> message, args);
 112         puts_filtered ("...");
 113         wrap_here ("");
 114         complaint_series++;
 115         break;
 116
 117       /* Subsequent messages of a series, or messages under `set verbose'.
 118          (We'll already have produced a "Reading in symbols for XXX..."
 119          message and will clean up at the end with a newline.)  */
 120       default:
 121         vprintf_filtered (complaint -> message, args);
 122         puts_filtered ("...");
 123         wrap_here ("");
 124     }
 125   /* If GDB dumps core, we'd like to see the complaints first.  Presumably
 126      GDB will not be sending so many complaints that this becomes a
 127      performance hog.  */
 128   gdb_flush (gdb_stdout);
 129   va_end (args);
 130 }
 131
 132 /* Clear out all complaint counters that have ever been incremented.
 133    If sym_reading is 1, be less verbose about successive complaints,
 134    since the messages are appearing all together during a command that
 135    reads symbols (rather than scattered around as psymtabs get fleshed
 136    out into symtabs at random times).  If noisy is 1, we are in a
 137    noisy symbol reading command, and our caller will print enough
 138    context for the user to figure it out.  */
 139
 140 void
 141 clear_complaints (sym_reading, noisy)
 142      int sym_reading;
 143      int noisy;
 144 {
 145   struct complaint *p;
 146
 147   for (p = complaint_root -> next; p != complaint_root; p = p -> next)
 148     {
 149       p -> counter = 0;
 150     }
 151
 152   if (!sym_reading && !noisy && complaint_series > 1)
 153     {
 154       /* Terminate previous series, since caller won't.  */
 155       puts_filtered ("\n");
 156     }
 157
 158   complaint_series = sym_reading ? 1 + noisy : 0;
 159 }
 160
 161 void
 162 _initialize_complaints ()
 163 {
 164   add_show_from_set
 165     (add_set_cmd ("complaints", class_support, var_zinteger,
 166                   (char *) &stop_whining,
 167                   "Set max number of complaints about incorrect symbols.",
 168                   &setlist),
 169      &showlist);
 170
 171 }