* 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
+ * modify it under the terms of the GNU Lesser 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.
+ * Lesser 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.
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
-/*
- * MT safe ; except for g_on_error_stack_trace, but who wants thread safety
+/*
+ * Modified by the GLib Team and others 1997-2000. 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 "config.h"
+#include "glibconfig.h"
#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 G_OS_UNIX
+#include <unistd.h>
+#include <sys/wait.h>
#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 _MSC_VER
-#include <process.h> /* For _getpid() */
+#include <string.h>
+
+#ifdef G_OS_WIN32
+# define STRICT /* Strict typing, please */
+# define _WIN32_WINDOWS 0x0401 /* to get IsDebuggerPresent */
+# include <windows.h>
+# undef STRICT
+#else
+# include <fcntl.h>
#endif
+#include "gbacktrace.h"
+
+#include "gtypes.h"
+#include "gmain.h"
+#include "gprintfint.h"
+#include "gutils.h"
+
+
#ifndef NO_FD_SET
# define SELECT_MASK fd_set
#else
-# ifndef _AIX
- typedef long fd_mask;
-# endif
# if defined(_IBMR2)
# define SELECT_MASK void
# else
#endif
+#ifndef G_OS_WIN32
static void stack_trace (char **args);
+#endif
-extern volatile gboolean glib_on_error_halt;
+/* People want to hit this from their debugger... */
+GLIB_AVAILABLE_IN_ALL volatile gboolean glib_on_error_halt;
volatile gboolean glib_on_error_halt = TRUE;
+/**
+ * g_on_error_query:
+ * @prg_name: the program name, needed by gdb for the "[S]tack trace"
+ * option. If @prg_name is %NULL, g_get_prgname() is called to get
+ * the program name (which will work correctly if gdk_init() or
+ * gtk_init() has been called)
+ *
+ * Prompts the user with
+ * `[E]xit, [H]alt, show [S]tack trace or [P]roceed`.
+ * This function is intended to be used for debugging use only.
+ * The following example shows how it can be used together with
+ * the g_log() functions.
+ *
+ * |[<!-- language="C" -->
+ * #include <glib.h>
+ *
+ * static void
+ * log_handler (const gchar *log_domain,
+ * GLogLevelFlags log_level,
+ * const gchar *message,
+ * gpointer user_data)
+ * {
+ * g_log_default_handler (log_domain, log_level, message, user_data);
+ *
+ * g_on_error_query (MY_PROGRAM_NAME);
+ * }
+ *
+ * int
+ * main (int argc, char *argv[])
+ * {
+ * g_log_set_handler (MY_LOG_DOMAIN,
+ * G_LOG_LEVEL_WARNING |
+ * G_LOG_LEVEL_ERROR |
+ * G_LOG_LEVEL_CRITICAL,
+ * log_handler,
+ * NULL);
+ * ...
+ * ]|
+ *
+ * If "[E]xit" is selected, the application terminates with a call
+ * to _exit(0).
+ *
+ * If "[S]tack" trace is selected, g_on_error_stack_trace() is called.
+ * This invokes gdb, which attaches to the current process and shows
+ * a stack trace. The prompt is then shown again.
+ *
+ * If "[P]roceed" is selected, the function returns.
+ *
+ * This function may cause different actions on non-UNIX platforms.
+ */
void
g_on_error_query (const gchar *prg_name)
{
- static const gchar *query1 = "[E]xit, [H]alt";
- static const gchar *query2 = ", show [S]tack trace";
- static const gchar *query3 = " or [P]roceed";
+#ifndef G_OS_WIN32
+ static const gchar * const query1 = "[E]xit, [H]alt";
+ static const gchar * const query2 = ", show [S]tack trace";
+ static const gchar * const 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);
+ _g_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);
+ _g_fprintf (stdout,
+ "(process:%u): %s%s: ",
+ (guint) getpid (),
+ query1,
+ query3);
fflush (stdout);
-
- fgets (buf, 8, stdin);
+
+ if (isatty(0) && isatty(1))
+ fgets (buf, 8, stdin);
+ else
+ strcpy (buf, "E\n");
if ((buf[0] == 'E' || buf[0] == 'e')
&& buf[1] == '\n')
_exit (0);
else if ((buf[0] == 'P' || buf[0] == 'p')
- && buf[1] == '\n')
+ && buf[1] == '\n')
return;
else if (prg_name
- && (buf[0] == 'S' || buf[0] == 's')
- && buf[1] == '\n')
+ && (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')
+ && 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, "g_on_error_query called, program terminating",
+ (prg_name && *prg_name) ? prg_name : NULL,
+ MB_OK|MB_ICONERROR);
+ _exit(0);
+#endif
}
+/**
+ * g_on_error_stack_trace:
+ * @prg_name: the program name, needed by gdb for the "[S]tack trace"
+ * option
+ *
+ * Invokes gdb, which attaches to the current process and shows a
+ * stack trace. Called by g_on_error_query() when the "[S]tack trace"
+ * option is selected. You can get the current process's program name
+ * with g_get_prgname(), assuming that you have called gtk_init() or
+ * gdk_init().
+ *
+ * This function may cause different actions on non-UNIX platforms.
+ */
void
g_on_error_stack_trace (const gchar *prg_name)
{
-#ifndef NATIVE_WIN32
+#if defined(G_OS_UNIX)
pid_t pid;
gchar buf[16];
gchar *args[4] = { "gdb", NULL, NULL, NULL };
+ int status;
if (!prg_name)
return;
- sprintf (buf, "%u", (guint) getpid ());
+ _g_sprintf (buf, "%u", (guint) getpid ());
args[1] = (gchar*) prg_name;
args[2] = buf;
perror ("unable to fork gdb");
return;
}
-
- while (glib_on_error_halt)
- ;
- glib_on_error_halt = TRUE;
+
+ waitpid (pid, &status, 0);
#else
- abort ();
+ if (IsDebuggerPresent ())
+ G_BREAKPOINT ();
+ else
+ abort ();
#endif
}
+#ifndef G_OS_WIN32
+
static gboolean stack_trace_done = FALSE;
static void
static void
stack_trace (char **args)
{
-#ifndef NATIVE_WIN32
pid_t pid;
int in_fd[2];
int out_fd[2];
SELECT_MASK fdset;
SELECT_MASK readset;
struct timeval tv;
- int sel, index, state;
+ int sel, idx, state;
char buffer[256];
char c;
pid = fork ();
if (pid == 0)
{
+ /* Save stderr for printing failure below */
+ int old_err = dup (2);
+ fcntl (old_err, F_SETFD, fcntl (old_err, F_GETFD) | FD_CLOEXEC);
+
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");
+
+ /* Print failure to original stderr */
+ close (2); dup (old_err);
+ perror ("exec gdb failed");
_exit (0);
}
else if (pid == (pid_t) -1)
write (in_fd[1], "p x = 0\n", 8);
write (in_fd[1], "quit\n", 5);
- index = 0;
+ idx = 0;
state = 0;
while (1)
if (c == '#')
{
state = 1;
- index = 0;
- buffer[index++] = c;
+ idx = 0;
+ buffer[idx++] = c;
}
break;
case 1:
- buffer[index++] = c;
+ buffer[idx++] = c;
if ((c == '\n') || (c == '\r'))
{
- buffer[index] = 0;
- fprintf (stdout, "%s", buffer);
+ buffer[idx] = 0;
+ _g_fprintf (stdout, "%s", buffer);
state = 0;
- index = 0;
+ idx = 0;
}
break;
default:
close (out_fd[0]);
close (out_fd[1]);
_exit (0);
-#else
- abort ();
-#endif
}
+
+#endif /* !G_OS_WIN32 */
projects / platform / upstream / glib.git / blobdiff