mirror of
https://github.com/gryf/wmaker.git
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d517d5cac0
- remove extern declaration in source file, use header instead - add inclusion of header defining the functions of the file to get the compiler to cross-check them - marked static the functions that should not be visible ouside their file
141 lines
3.5 KiB
C
141 lines
3.5 KiB
C
/* monitor.c - monitors the wmaker process
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*
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* Window Maker window manager
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*
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* Copyright (c) 1997-2004 Alfredo K. Kojima
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "wconfig.h"
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#include <unistd.h>
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#include <stdlib.h>
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#include <time.h>
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#include <signal.h>
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#include <sys/wait.h>
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#ifdef __FreeBSD__
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#include <sys/signal.h>
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#endif
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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#include <X11/Xproto.h>
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#include "WindowMaker.h"
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#include "screen.h"
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#include "window.h"
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#include "dialog.h"
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#include "main.h"
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#include "funcs.h"
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/****** Global Variables ******/
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extern WPreferences wPreferences;
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static int showCrashDialog(int sig)
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{
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int crashAction;
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dpy = XOpenDisplay(NULL);
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if (dpy) {
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/* XXX TODO make sure that window states are saved and restored via netwm */
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XGrabServer(dpy);
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crashAction = wShowCrashingDialogPanel(sig);
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XCloseDisplay(dpy);
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dpy = NULL;
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} else {
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werror(_("cannot open connection for crashing dialog panel. Aborting."));
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crashAction = WMAbort;
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}
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if (crashAction == WMStartAlternate) {
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int i;
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wmessage(_("trying to start alternate window manager..."));
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for (i = 0; i < WMGetArrayItemCount(wPreferences.fallbackWMs); i++) {
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Restart(WMGetFromArray(wPreferences.fallbackWMs, i), False);
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}
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wfatal(_("failed to start alternate window manager. Aborting."));
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return 0;
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} else if (crashAction == WMAbort)
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return 0;
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else
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return 1;
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}
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int MonitorLoop(int argc, char **argv)
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{
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pid_t pid, exited;
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char **child_argv = wmalloc(sizeof(char *) * (argc + 2));
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int i, status;
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time_t last_start;
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Bool error = False;
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for (i = 0; i < argc; i++)
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child_argv[i] = argv[i];
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child_argv[i++] = "--for-real";
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child_argv[i] = NULL;
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for (;;) {
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last_start = time(NULL);
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/* Start Window Maker */
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pid = fork();
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if (pid == 0) {
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execvp(child_argv[0], child_argv);
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werror(_("Error respawning Window Maker"));
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exit(1);
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} else if (pid < 0) {
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werror(_("Error respawning Window Maker"));
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exit(1);
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}
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do {
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if ((exited = waitpid(-1, &status, 0)) < 0) {
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werror(_("Error during monitoring of Window Maker process."));
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error = True;
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break;
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}
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} while (exited != pid);
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if (error)
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break;
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child_argv[argc] = "--for-real-";
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/* Check if the wmaker process exited due to a crash */
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if (WIFSIGNALED(status) &&
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(WTERMSIG(status) == SIGSEGV ||
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WTERMSIG(status) == SIGBUS ||
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WTERMSIG(status) == SIGILL || WTERMSIG(status) == SIGABRT || WTERMSIG(status) == SIGFPE)) {
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/* If so, we check when was the last restart.
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* If it was less than 3s ago, it's a bad sign, so we show
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* the crash panel and ask the user what to do */
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if (time(NULL) - last_start < 3) {
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if (showCrashDialog(WTERMSIG(status)) == 0) {
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return 1;
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}
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}
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wwarning(_("Window Maker exited due to a crash (signal %i) and will be restarted."),
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WTERMSIG(status));
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} else
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break;
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}
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return 0;
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}
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