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/* GLIB - Library of useful routines for C programming
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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* Modified by the GLib Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GLib Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GLib at ftp://ftp.gtk.org/pub/gtk/.
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* MT safe ; except for g_on_error_stack_trace, but who wants thread safety
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#include "gprintfint.h"
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#ifdef HAVE_SYS_TIME_H
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#ifdef HAVE_SYS_TIMES_H
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#include <sys/times.h>
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#include <sys/types.h>
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#ifdef HAVE_SYS_WAIT_H
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif /* HAVE_SYS_SELECT_H */
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#include <string.h> /* for bzero on BSD systems */
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# define STRICT /* Strict typing, please */
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# define _WIN32_WINDOWS 0x0401 /* to get IsDebuggerPresent */
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# define SELECT_MASK fd_set
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# define SELECT_MASK void
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# define SELECT_MASK int
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static void stack_trace (char **args);
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extern volatile gboolean glib_on_error_halt;
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volatile gboolean glib_on_error_halt = TRUE;
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g_on_error_query (const gchar *prg_name)
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static const gchar * const query1 = "[E]xit, [H]alt";
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static const gchar * const query2 = ", show [S]tack trace";
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static const gchar * const query3 = " or [P]roceed";
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prg_name = g_get_prgname ();
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"%s (pid:%u): %s%s%s: ",
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"(process:%u): %s%s: ",
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if (isatty(0) && isatty(1))
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fgets (buf, 8, stdin);
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if ((buf[0] == 'E' || buf[0] == 'e')
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else if ((buf[0] == 'P' || buf[0] == 'p')
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&& (buf[0] == 'S' || buf[0] == 's')
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g_on_error_stack_trace (prg_name);
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else if ((buf[0] == 'H' || buf[0] == 'h')
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while (glib_on_error_halt)
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glib_on_error_halt = TRUE;
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prg_name = g_get_prgname ();
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MessageBox (NULL, "g_on_error_query called, program terminating",
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(prg_name && *prg_name) ? prg_name : NULL,
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g_on_error_stack_trace (const gchar *prg_name)
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#if defined(G_OS_UNIX) || defined(G_OS_BEOS)
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gchar *args[4] = { "gdb", NULL, NULL, NULL };
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_g_sprintf (buf, "%u", (guint) getpid ());
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args[1] = (gchar*) prg_name;
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else if (pid == (pid_t) -1)
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perror ("unable to fork gdb");
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waitpid (pid, &status, 0);
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if (IsDebuggerPresent ())
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static gboolean stack_trace_done = FALSE;
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stack_trace_sigchld (int signum)
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stack_trace_done = TRUE;
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stack_trace (char **args)
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int sel, index, state;
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stack_trace_done = FALSE;
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signal (SIGCHLD, stack_trace_sigchld);
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if ((pipe (in_fd) == -1) || (pipe (out_fd) == -1))
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perror ("unable to open pipe");
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close (0); dup (in_fd[0]); /* set the stdin to the in pipe */
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close (1); dup (out_fd[1]); /* set the stdout to the out pipe */
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close (2); dup (out_fd[1]); /* set the stderr to the out pipe */
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execvp (args[0], args); /* exec gdb */
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perror ("exec failed");
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else if (pid == (pid_t) -1)
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perror ("unable to fork");
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FD_SET (out_fd[0], &fdset);
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write (in_fd[1], "backtrace\n", 10);
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write (in_fd[1], "p x = 0\n", 8);
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write (in_fd[1], "quit\n", 5);
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sel = select (FD_SETSIZE, &readset, NULL, NULL, &tv);
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if ((sel > 0) && (FD_ISSET (out_fd[0], &readset)))
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if (read (out_fd[0], &c, 1))
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if ((c == '\n') || (c == '\r'))
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_g_fprintf (stdout, "%s", buffer);
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else if (stack_trace_done)
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#endif /* !G_OS_WIN32 */
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#define __G_BACKTRACE_C__
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#include "galiasdef.c"