|
Packit |
db3073 |
/* GLIB - Library of useful routines for C programming
|
|
Packit |
db3073 |
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* This library is free software; you can redistribute it and/or
|
|
Packit |
db3073 |
* modify it under the terms of the GNU Lesser General Public
|
|
Packit |
db3073 |
* License as published by the Free Software Foundation; either
|
|
Packit |
db3073 |
* version 2 of the License, or (at your option) any later version.
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* This library is distributed in the hope that it will be useful,
|
|
Packit |
db3073 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
db3073 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Packit |
db3073 |
* Lesser General Public License for more details.
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* You should have received a copy of the GNU Lesser General Public
|
|
Packit |
db3073 |
* License along with this library; if not, write to the
|
|
Packit |
db3073 |
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Packit |
db3073 |
* Boston, MA 02111-1307, USA.
|
|
Packit |
db3073 |
*/
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
/*
|
|
Packit |
db3073 |
* Modified by the GLib Team and others 1997-2000. See the AUTHORS
|
|
Packit |
db3073 |
* file for a list of people on the GLib Team. See the ChangeLog
|
|
Packit |
db3073 |
* files for a list of changes. These files are distributed with
|
|
Packit |
db3073 |
* GLib at ftp://ftp.gtk.org/pub/gtk/.
|
|
Packit |
db3073 |
*/
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
/*
|
|
Packit |
db3073 |
* MT safe ; except for g_on_error_stack_trace, but who wants thread safety
|
|
Packit |
db3073 |
* then
|
|
Packit |
db3073 |
*/
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#include "config.h"
|
|
Packit |
db3073 |
#include "glibconfig.h"
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#include <signal.h>
|
|
Packit |
db3073 |
#include <stdarg.h>
|
|
Packit |
db3073 |
#include <stdio.h>
|
|
Packit |
db3073 |
#include <stdlib.h>
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#ifdef HAVE_SYS_TIME_H
|
|
Packit |
db3073 |
#include <sys/time.h>
|
|
Packit |
db3073 |
#endif
|
|
Packit |
db3073 |
#ifdef HAVE_SYS_TIMES_H
|
|
Packit |
db3073 |
#include <sys/times.h>
|
|
Packit |
db3073 |
#endif
|
|
Packit |
db3073 |
#include <sys/types.h>
|
|
Packit |
db3073 |
#ifdef HAVE_SYS_WAIT_H
|
|
Packit |
db3073 |
#include <sys/wait.h>
|
|
Packit |
db3073 |
#endif
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#include <time.h>
|
|
Packit |
db3073 |
#ifdef HAVE_UNISTD_H
|
|
Packit |
db3073 |
#include <unistd.h>
|
|
Packit |
db3073 |
#endif
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#ifdef HAVE_SYS_SELECT_H
|
|
Packit |
db3073 |
#include <sys/select.h>
|
|
Packit |
db3073 |
#endif /* HAVE_SYS_SELECT_H */
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#include <string.h> /* for bzero on BSD systems */
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#ifdef G_OS_WIN32
|
|
Packit |
db3073 |
# define STRICT /* Strict typing, please */
|
|
Packit |
db3073 |
# define _WIN32_WINDOWS 0x0401 /* to get IsDebuggerPresent */
|
|
Packit |
db3073 |
# include <windows.h>
|
|
Packit |
db3073 |
# undef STRICT
|
|
Packit |
db3073 |
#endif
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#include "gbacktrace.h"
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#include "gtypes.h"
|
|
Packit |
db3073 |
#include "gmain.h"
|
|
Packit |
db3073 |
#include "gprintfint.h"
|
|
Packit |
db3073 |
#include "gutils.h"
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#ifndef NO_FD_SET
|
|
Packit |
db3073 |
# define SELECT_MASK fd_set
|
|
Packit |
db3073 |
#else
|
|
Packit |
db3073 |
# if defined(_IBMR2)
|
|
Packit |
db3073 |
# define SELECT_MASK void
|
|
Packit |
db3073 |
# else
|
|
Packit |
db3073 |
# define SELECT_MASK int
|
|
Packit |
db3073 |
# endif
|
|
Packit |
db3073 |
#endif
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#ifndef G_OS_WIN32
|
|
Packit |
db3073 |
static void stack_trace (char **args);
|
|
Packit |
db3073 |
#endif
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
extern volatile gboolean glib_on_error_halt;
|
|
Packit |
db3073 |
volatile gboolean glib_on_error_halt = TRUE;
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
/**
|
|
Packit |
db3073 |
* g_on_error_query:
|
|
Packit |
db3073 |
* @prg_name: the program name, needed by <command>gdb</command>
|
|
Packit |
db3073 |
* for the [S]tack trace option. If @prg_name is %NULL, g_get_prgname()
|
|
Packit |
db3073 |
* is called to get the program name (which will work correctly if
|
|
Packit |
db3073 |
* gdk_init() or gtk_init() has been called)
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* Prompts the user with
|
|
Packit |
db3073 |
* <computeroutput>[E]xit, [H]alt, show [S]tack trace or [P]roceed</computeroutput>.
|
|
Packit |
db3073 |
* This function is intended to be used for debugging use only.
|
|
Packit |
db3073 |
* The following example shows how it can be used together with
|
|
Packit |
db3073 |
* the g_log() functions.
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* |[
|
|
Packit |
db3073 |
* #include <glib.h>
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* static void
|
|
Packit |
db3073 |
* log_handler (const gchar *log_domain,
|
|
Packit |
db3073 |
* GLogLevelFlags log_level,
|
|
Packit |
db3073 |
* const gchar *message,
|
|
Packit |
db3073 |
* gpointer user_data)
|
|
Packit |
db3073 |
* {
|
|
Packit |
db3073 |
* g_log_default_handler (log_domain, log_level, message, user_data);
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* g_on_error_query (MY_PROGRAM_NAME);
|
|
Packit |
db3073 |
* }
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* int
|
|
Packit |
db3073 |
* main (int argc, char *argv[])
|
|
Packit |
db3073 |
* {
|
|
Packit |
db3073 |
* g_log_set_handler (MY_LOG_DOMAIN,
|
|
Packit |
db3073 |
* G_LOG_LEVEL_WARNING |
|
|
Packit |
db3073 |
* G_LOG_LEVEL_ERROR |
|
|
Packit |
db3073 |
* G_LOG_LEVEL_CRITICAL,
|
|
Packit |
db3073 |
* log_handler,
|
|
Packit |
db3073 |
* NULL);
|
|
Packit |
db3073 |
* /* ... */
|
|
Packit |
db3073 |
* ]|
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* If [E]xit is selected, the application terminates with a call
|
|
Packit |
db3073 |
* to <literal>_exit(0)</literal>.
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* If [S]tack trace is selected, g_on_error_stack_trace() is called.
|
|
Packit |
db3073 |
* This invokes <command>gdb</command>, which attaches to the current
|
|
Packit |
db3073 |
* process and shows a stack trace. The prompt is then shown again.
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* If [P]roceed is selected, the function returns.
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* This function may cause different actions on non-UNIX platforms.
|
|
Packit |
db3073 |
*/
|
|
Packit |
db3073 |
void
|
|
Packit |
db3073 |
g_on_error_query (const gchar *prg_name)
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
#ifndef G_OS_WIN32
|
|
Packit |
db3073 |
static const gchar * const query1 = "[E]xit, [H]alt";
|
|
Packit |
db3073 |
static const gchar * const query2 = ", show [S]tack trace";
|
|
Packit |
db3073 |
static const gchar * const query3 = " or [P]roceed";
|
|
Packit |
db3073 |
gchar buf[16];
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
if (!prg_name)
|
|
Packit |
db3073 |
prg_name = g_get_prgname ();
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
retry:
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
if (prg_name)
|
|
Packit |
db3073 |
_g_fprintf (stdout,
|
|
Packit |
db3073 |
"%s (pid:%u): %s%s%s: ",
|
|
Packit |
db3073 |
prg_name,
|
|
Packit |
db3073 |
(guint) getpid (),
|
|
Packit |
db3073 |
query1,
|
|
Packit |
db3073 |
query2,
|
|
Packit |
db3073 |
query3);
|
|
Packit |
db3073 |
else
|
|
Packit |
db3073 |
_g_fprintf (stdout,
|
|
Packit |
db3073 |
"(process:%u): %s%s: ",
|
|
Packit |
db3073 |
(guint) getpid (),
|
|
Packit |
db3073 |
query1,
|
|
Packit |
db3073 |
query3);
|
|
Packit |
db3073 |
fflush (stdout);
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
if (isatty(0) && isatty(1))
|
|
Packit |
db3073 |
fgets (buf, 8, stdin);
|
|
Packit |
db3073 |
else
|
|
Packit |
db3073 |
strcpy (buf, "E\n");
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
if ((buf[0] == 'E' || buf[0] == 'e')
|
|
Packit |
db3073 |
&& buf[1] == '\n')
|
|
Packit |
db3073 |
_exit (0);
|
|
Packit |
db3073 |
else if ((buf[0] == 'P' || buf[0] == 'p')
|
|
Packit |
db3073 |
&& buf[1] == '\n')
|
|
Packit |
db3073 |
return;
|
|
Packit |
db3073 |
else if (prg_name
|
|
Packit |
db3073 |
&& (buf[0] == 'S' || buf[0] == 's')
|
|
Packit |
db3073 |
&& buf[1] == '\n')
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
g_on_error_stack_trace (prg_name);
|
|
Packit |
db3073 |
goto retry;
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
else if ((buf[0] == 'H' || buf[0] == 'h')
|
|
Packit |
db3073 |
&& buf[1] == '\n')
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
while (glib_on_error_halt)
|
|
Packit |
db3073 |
;
|
|
Packit |
db3073 |
glib_on_error_halt = TRUE;
|
|
Packit |
db3073 |
return;
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
else
|
|
Packit |
db3073 |
goto retry;
|
|
Packit |
db3073 |
#else
|
|
Packit |
db3073 |
if (!prg_name)
|
|
Packit |
db3073 |
prg_name = g_get_prgname ();
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
MessageBox (NULL, "g_on_error_query called, program terminating",
|
|
Packit |
db3073 |
(prg_name && *prg_name) ? prg_name : NULL,
|
|
Packit |
db3073 |
MB_OK|MB_ICONERROR);
|
|
Packit |
db3073 |
_exit(0);
|
|
Packit |
db3073 |
#endif
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
/**
|
|
Packit |
db3073 |
* g_on_error_stack_trace:
|
|
Packit |
db3073 |
* @prg_name: the program name, needed by <command>gdb</command>
|
|
Packit |
db3073 |
* for the [S]tack trace option.
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* Invokes <command>gdb</command>, which attaches to the current
|
|
Packit |
db3073 |
* process and shows a stack trace. Called by g_on_error_query()
|
|
Packit |
db3073 |
* when the [S]tack trace option is selected. You can get the current
|
|
Packit |
db3073 |
* process's "program name" with g_get_prgname(), assuming that you
|
|
Packit |
db3073 |
* have called gtk_init() or gdk_init().
|
|
Packit |
db3073 |
*
|
|
Packit |
db3073 |
* This function may cause different actions on non-UNIX platforms.
|
|
Packit |
db3073 |
*/
|
|
Packit |
db3073 |
void
|
|
Packit |
db3073 |
g_on_error_stack_trace (const gchar *prg_name)
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
#if defined(G_OS_UNIX) || defined(G_OS_BEOS)
|
|
Packit |
db3073 |
pid_t pid;
|
|
Packit |
db3073 |
gchar buf[16];
|
|
Packit |
db3073 |
gchar *args[4] = { "gdb", NULL, NULL, NULL };
|
|
Packit |
db3073 |
int status;
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
if (!prg_name)
|
|
Packit |
db3073 |
return;
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
_g_sprintf (buf, "%u", (guint) getpid ());
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
args[1] = (gchar*) prg_name;
|
|
Packit |
db3073 |
args[2] = buf;
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
pid = fork ();
|
|
Packit |
db3073 |
if (pid == 0)
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
stack_trace (args);
|
|
Packit |
db3073 |
_exit (0);
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
else if (pid == (pid_t) -1)
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
perror ("unable to fork gdb");
|
|
Packit |
db3073 |
return;
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
waitpid (pid, &status, 0);
|
|
Packit |
db3073 |
#else
|
|
Packit |
db3073 |
if (IsDebuggerPresent ())
|
|
Packit |
db3073 |
G_BREAKPOINT ();
|
|
Packit |
db3073 |
else
|
|
Packit |
db3073 |
abort ();
|
|
Packit |
db3073 |
#endif
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#ifndef G_OS_WIN32
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
static gboolean stack_trace_done = FALSE;
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
static void
|
|
Packit |
db3073 |
stack_trace_sigchld (int signum)
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
stack_trace_done = TRUE;
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
static void
|
|
Packit |
db3073 |
stack_trace (char **args)
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
pid_t pid;
|
|
Packit |
db3073 |
int in_fd[2];
|
|
Packit |
db3073 |
int out_fd[2];
|
|
Packit |
db3073 |
SELECT_MASK fdset;
|
|
Packit |
db3073 |
SELECT_MASK readset;
|
|
Packit |
db3073 |
struct timeval tv;
|
|
Packit |
db3073 |
int sel, idx, state;
|
|
Packit |
db3073 |
char buffer[256];
|
|
Packit |
db3073 |
char c;
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
stack_trace_done = FALSE;
|
|
Packit |
db3073 |
signal (SIGCHLD, stack_trace_sigchld);
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
if ((pipe (in_fd) == -1) || (pipe (out_fd) == -1))
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
perror ("unable to open pipe");
|
|
Packit |
db3073 |
_exit (0);
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
pid = fork ();
|
|
Packit |
db3073 |
if (pid == 0)
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
close (0); dup (in_fd[0]); /* set the stdin to the in pipe */
|
|
Packit |
db3073 |
close (1); dup (out_fd[1]); /* set the stdout to the out pipe */
|
|
Packit |
db3073 |
close (2); dup (out_fd[1]); /* set the stderr to the out pipe */
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
execvp (args[0], args); /* exec gdb */
|
|
Packit |
db3073 |
perror ("exec failed");
|
|
Packit |
db3073 |
_exit (0);
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
else if (pid == (pid_t) -1)
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
perror ("unable to fork");
|
|
Packit |
db3073 |
_exit (0);
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
FD_ZERO (&fdset);
|
|
Packit |
db3073 |
FD_SET (out_fd[0], &fdset);
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
write (in_fd[1], "backtrace\n", 10);
|
|
Packit |
db3073 |
write (in_fd[1], "p x = 0\n", 8);
|
|
Packit |
db3073 |
write (in_fd[1], "quit\n", 5);
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
idx = 0;
|
|
Packit |
db3073 |
state = 0;
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
while (1)
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
readset = fdset;
|
|
Packit |
db3073 |
tv.tv_sec = 1;
|
|
Packit |
db3073 |
tv.tv_usec = 0;
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
sel = select (FD_SETSIZE, &readset, NULL, NULL, &tv;;
|
|
Packit |
db3073 |
if (sel == -1)
|
|
Packit |
db3073 |
break;
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
if ((sel > 0) && (FD_ISSET (out_fd[0], &readset)))
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
if (read (out_fd[0], &c, 1))
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
switch (state)
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
case 0:
|
|
Packit |
db3073 |
if (c == '#')
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
state = 1;
|
|
Packit |
db3073 |
idx = 0;
|
|
Packit |
db3073 |
buffer[idx++] = c;
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
break;
|
|
Packit |
db3073 |
case 1:
|
|
Packit |
db3073 |
buffer[idx++] = c;
|
|
Packit |
db3073 |
if ((c == '\n') || (c == '\r'))
|
|
Packit |
db3073 |
{
|
|
Packit |
db3073 |
buffer[idx] = 0;
|
|
Packit |
db3073 |
_g_fprintf (stdout, "%s", buffer);
|
|
Packit |
db3073 |
state = 0;
|
|
Packit |
db3073 |
idx = 0;
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
break;
|
|
Packit |
db3073 |
default:
|
|
Packit |
db3073 |
break;
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
else if (stack_trace_done)
|
|
Packit |
db3073 |
break;
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
close (in_fd[0]);
|
|
Packit |
db3073 |
close (in_fd[1]);
|
|
Packit |
db3073 |
close (out_fd[0]);
|
|
Packit |
db3073 |
close (out_fd[1]);
|
|
Packit |
db3073 |
_exit (0);
|
|
Packit |
db3073 |
}
|
|
Packit |
db3073 |
|
|
Packit |
db3073 |
#endif /* !G_OS_WIN32 */
|