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/* Metacity X error handling */
/*
* Copyright (C) 2001 Havoc Pennington, error trapping inspired by GDK
* code copyrighted by the GTK team.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*/
#include "errors.h"
#include <errno.h>
typedef struct _ErrorTrap ErrorTrap;
struct _ErrorTrap
{
int error_code;
};
static int x_error_handler (Display *display,
XErrorEvent *error);
static int x_io_error_handler (Display *display);
void
meta_errors_init (void)
{
XSetErrorHandler (x_error_handler);
XSetIOErrorHandler (x_io_error_handler);
}
void
meta_error_trap_push (MetaDisplay *display)
{
ErrorTrap *et;
et = g_new (ErrorTrap, 1);
et->error_code = Success;
display->error_traps = g_slist_prepend (display->error_traps, et);
}
int
meta_error_trap_pop (MetaDisplay *display)
{
int result;
ErrorTrap *et;
GSList *next;
if (display->error_traps == NULL)
meta_bug ("No error trap to pop\n");
XSync (display->xdisplay, False);
et = display->error_traps->data;
result = et->error_code;
next = display->error_traps->next;
g_slist_free_1 (display->error_traps);
display->error_traps = next;
g_free (et);
if (result != Success)
{
gchar buf[64];
XGetErrorText (display->xdisplay, result, buf, 63);
meta_verbose ("Popping error code %d (%s)\n",
result, buf);
}
return result;
}
static int
x_error_handler (Display *xdisplay,
XErrorEvent *error)
{
if (error->error_code)
{
MetaDisplay *display;
display = meta_display_for_x_display (xdisplay);
if (display == NULL)
meta_bug ("Error received for unknown display?\n");
if (display->error_traps == NULL)
{
gchar buf[64];
XGetErrorText (xdisplay, error->error_code, buf, 63);
meta_fatal ("Received an X Window System error without handling it.\n"
"The error was '%s'.\n"
" (Details: serial %ld error_code %d request_code %d minor_code %d)\n",
buf,
error->serial,
error->error_code,
error->request_code,
error->minor_code);
}
else
{
ErrorTrap *et;
et = display->error_traps->data;
et->error_code = error->error_code;
}
}
return 0;
}
static int
x_io_error_handler (Display *xdisplay)
{
MetaDisplay *display;
display = meta_display_for_x_display (xdisplay);
if (display == NULL)
meta_bug ("IO error received for unknown display?\n");
if (errno == EPIPE)
{
meta_warning (_("Lost connection to the display '%s';\n"
"most likely the X server was shut down or you killed/destroyed\n"
"the window manager.\n"),
display->name);
}
else
{
meta_warning (_("Fatal IO error %d (%s) on display '%s'.\n"),
errno, g_strerror (errno),
display->name);
}
meta_display_close (display);
/* I believe Xlib will force an exit after we return, which
* seems sort of broken to me, but if true we should probably just
* exit for ourselves. But for now I'm not doing it.
*/
return 0;
}
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