1 /* monitor.c - monitors the wmaker process
3 * Window Maker window manager
5 * Copyright (c) 1997-2004 Alfredo K. Kojima
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
30 #include <sys/signal.h>
34 #include <X11/Xutil.h>
35 #include <X11/Xproto.h>
37 #include "WindowMaker.h"
43 /****** Global Variables ******/
45 extern WPreferences wPreferences
;
47 extern int wScreenCount
;
52 int showCrashDialog(int sig
)
57 dpy
= XOpenDisplay("");
59 /* XXX TODO make sure that window states are saved and restored via netwm */
62 crashAction
= wShowCrashingDialogPanel(sig
);
66 wsyserror(_("cannot open connection for crashing dialog panel. Aborting."));
67 crashAction
= WMAbort
;
70 if (crashAction
== WMRestart
)
74 wmessage(_("trying to start alternate window manager..."));
76 for (i
=0; i
<WMGetArrayItemCount(wPreferences
.fallbackWMs
); i
++) {
77 Restart(WMGetFromArray(wPreferences
.fallbackWMs
, i
), False
);
80 wfatal(_("failed to start alternate window manager. Aborting."));
84 else if (crashAction
== WMAbort
)
91 int MonitorLoop(int argc
, char **argv
)
94 char **child_argv
= wmalloc(sizeof(char*)*(argc
+2));
98 for (i
= 0; i
< argc
; i
++)
99 child_argv
[i
]= argv
[i
];
100 child_argv
[i
++]= "--for-real";
105 last_start
= time(NULL
);
107 /* Start Window Maker */
111 execvp(child_argv
[0], child_argv
);
112 wsyserror(_("Error respawning Window Maker"));
117 wsyserror(_("Error respawning Window Maker"));
121 if (waitpid(pid
, &status
, 0) < 0)
123 wsyserror(_("Error during monitoring of Window Maker process."));
127 child_argv
[argc
]= "--for-real-";
129 /* Check if the wmaker process exited due to a crash */
130 if (WIFSIGNALED(status
) &&
131 (WTERMSIG(status
) == SIGSEGV
||
132 WTERMSIG(status
) == SIGBUS
||
133 WTERMSIG(status
) == SIGILL
||
134 WTERMSIG(status
) == SIGFPE
))
136 /* If so, we check when was the last restart.
137 * If it was less than 3s ago, it's a bad sign, so we show
138 * the crash panel and ask the user what to do */
139 if (time(NULL
) - last_start
< 3)
141 if (showCrashDialog(WTERMSIG(status
)) == 0)
144 wwarning(_("Window Maker exited due to a crash (signal %i) and will be restarted."),