glib/gerror.c
CDT 1999 Shawn T. Amundson 499c9786d1 Port to BeOS by myself and Richard Offer.
Sat May  8 01:52:29 CDT 1999 Shawn T. Amundson <amundson@gtk.org>

        * configure.in
          gerror.c
          gmain.c
          gstrfuncs.c
          gutils.c
          ltconfig
          ltmain.sh
          gmodule/Makefile.am
          gmodule/gmodule.c
          gmodule/gmoduleconf.h.in
          gmodule/gmodule-beos.c
          gthread/Makefile.am: Port to BeOS by myself and Richard Offer.
1999-05-08 07:40:44 +00:00

296 lines
6.3 KiB
C

/* GLIB - Library of useful routines for C programming
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GLib Team and others 1997-1999. See the AUTHORS
* file for a list of people on the GLib Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GLib at ftp://ftp.gtk.org/pub/gtk/.
*/
/*
* MT safe ; except for g_on_error_stack_trace, but who wants thread safety
* then
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include "glib.h"
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SYS_TIMES_H
#include <sys/times.h>
#endif
#include <sys/types.h>
#include <time.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif /* HAVE_SYS_SELECT_H */
#ifdef STDC_HEADERS
#include <string.h> /* for bzero on BSD systems */
#endif
#ifdef NATIVE_WIN32
# define STRICT /* Strict typing, please */
# include <windows.h>
# include <process.h> /* For _getpid() */
#endif
#ifndef NO_FD_SET
# define SELECT_MASK fd_set
#else
# if defined(_IBMR2)
# define SELECT_MASK void
# else
# define SELECT_MASK int
# endif
#endif
static void stack_trace (char **args);
extern volatile gboolean glib_on_error_halt;
volatile gboolean glib_on_error_halt = TRUE;
void
g_on_error_query (const gchar *prg_name)
{
#ifndef NATIVE_WIN32
static const gchar *query1 = "[E]xit, [H]alt";
static const gchar *query2 = ", show [S]tack trace";
static const gchar *query3 = " or [P]roceed";
gchar buf[16];
if (!prg_name)
prg_name = g_get_prgname ();
retry:
if (prg_name)
fprintf (stdout,
"%s (pid:%u): %s%s%s: ",
prg_name,
(guint) getpid (),
query1,
query2,
query3);
else
fprintf (stdout,
"(process:%u): %s%s: ",
(guint) getpid (),
query1,
query3);
fflush (stdout);
fgets (buf, 8, stdin);
if ((buf[0] == 'E' || buf[0] == 'e')
&& buf[1] == '\n')
_exit (0);
else if ((buf[0] == 'P' || buf[0] == 'p')
&& buf[1] == '\n')
return;
else if (prg_name
&& (buf[0] == 'S' || buf[0] == 's')
&& buf[1] == '\n')
{
g_on_error_stack_trace (prg_name);
goto retry;
}
else if ((buf[0] == 'H' || buf[0] == 'h')
&& buf[1] == '\n')
{
while (glib_on_error_halt)
;
glib_on_error_halt = TRUE;
return;
}
else
goto retry;
#else
if (!prg_name)
prg_name = g_get_prgname ();
MessageBox (NULL, "Terminating",
(prg_name && *prg_name) ? prg_name : NULL,
MB_OK|MB_ICONERROR);
_exit(0);
#endif
}
void
g_on_error_stack_trace (const gchar *prg_name)
{
#if !defined(NATIVE_WIN32) && ! defined(GLIB_NATIVE_BEOS)
pid_t pid;
gchar buf[16];
gchar *args[4] = { "gdb", NULL, NULL, NULL };
if (!prg_name)
return;
sprintf (buf, "%u", (guint) getpid ());
args[1] = (gchar*) prg_name;
args[2] = buf;
pid = fork ();
if (pid == 0)
{
stack_trace (args);
_exit (0);
}
else if (pid == (pid_t) -1)
{
perror ("unable to fork gdb");
return;
}
while (glib_on_error_halt)
;
glib_on_error_halt = TRUE;
#else
abort ();
#endif
}
static gboolean stack_trace_done = FALSE;
static void
stack_trace_sigchld (int signum)
{
stack_trace_done = TRUE;
}
static void
stack_trace (char **args)
{
#if !defined(NATIVE_WIN32) && !defined(GLIB_NATIVE_BEOS)
pid_t pid;
int in_fd[2];
int out_fd[2];
SELECT_MASK fdset;
SELECT_MASK readset;
struct timeval tv;
int sel, index, state;
char buffer[256];
char c;
stack_trace_done = FALSE;
signal (SIGCHLD, stack_trace_sigchld);
if ((pipe (in_fd) == -1) || (pipe (out_fd) == -1))
{
perror ("unable to open pipe");
_exit (0);
}
pid = fork ();
if (pid == 0)
{
close (0); dup (in_fd[0]); /* set the stdin to the in pipe */
close (1); dup (out_fd[1]); /* set the stdout to the out pipe */
close (2); dup (out_fd[1]); /* set the stderr to the out pipe */
execvp (args[0], args); /* exec gdb */
perror ("exec failed");
_exit (0);
}
else if (pid == (pid_t) -1)
{
perror ("unable to fork");
_exit (0);
}
FD_ZERO (&fdset);
FD_SET (out_fd[0], &fdset);
write (in_fd[1], "backtrace\n", 10);
write (in_fd[1], "p x = 0\n", 8);
write (in_fd[1], "quit\n", 5);
index = 0;
state = 0;
while (1)
{
readset = fdset;
tv.tv_sec = 1;
tv.tv_usec = 0;
sel = select (FD_SETSIZE, &readset, NULL, NULL, &tv);
if (sel == -1)
break;
if ((sel > 0) && (FD_ISSET (out_fd[0], &readset)))
{
if (read (out_fd[0], &c, 1))
{
switch (state)
{
case 0:
if (c == '#')
{
state = 1;
index = 0;
buffer[index++] = c;
}
break;
case 1:
buffer[index++] = c;
if ((c == '\n') || (c == '\r'))
{
buffer[index] = 0;
fprintf (stdout, "%s", buffer);
state = 0;
index = 0;
}
break;
default:
break;
}
}
}
else if (stack_trace_done)
break;
}
close (in_fd[0]);
close (in_fd[1]);
close (out_fd[0]);
close (out_fd[1]);
_exit (0);
#else
abort ();
#endif
}