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- /*
- This file is part of GNUnet
- Copyright (C) 2010 Christian Grothoff (and other contributing authors)
- GNUnet 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 3, or (at your
- option) any later version.
- GNUnet 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 GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
- */
- /**
- * @file contrib/timeout_watchdog.c
- * @brief small tool starting a child process, waiting that it terminates or killing it after a given timeout period
- * @author Matthias Wachs
- */
- #include <sys/types.h>
- #include <sys/wait.h>
- #include <signal.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <unistd.h>
- static pid_t child;
- static void
- sigchld_handler (int val)
- {
- int status = 0;
- int ret = 0;
- waitpid (child, &status, 0);
- if (WIFEXITED (status) != 0)
- {
- ret = WEXITSTATUS (status);
- printf ("Test process exited with result %u\n", ret);
- }
- if (WIFSIGNALED (status) != 0)
- {
- ret = WTERMSIG (status);
- printf ("Test process was signaled %u\n", ret);
- }
- exit (ret);
- }
- static void
- sigint_handler (int val)
- {
- kill (0, val);
- exit (val);
- }
- int
- main (int argc, char *argv[])
- {
- int timeout = 0;
- pid_t gpid = 0;
- if (argc < 3)
- {
- printf
- ("arg 1: timeout in sec., arg 2: executable, arg<n> arguments\n");
- exit (1);
- }
- timeout = atoi (argv[1]);
- if (timeout == 0)
- timeout = 600;
- /* with getpgid() it does not compile, but getpgrp is the BSD version and working */
- gpid = getpgrp ();
- signal (SIGCHLD, sigchld_handler);
- signal (SIGABRT, sigint_handler);
- signal (SIGFPE, sigint_handler);
- signal (SIGILL, sigint_handler);
- signal (SIGINT, sigint_handler);
- signal (SIGSEGV, sigint_handler);
- signal (SIGTERM, sigint_handler);
- child = fork ();
- if (child == 0)
- {
- /* int setpgrp(pid_t pid, pid_t pgid); is not working on this machine */
- //setpgrp (0, pid_t gpid);
- if (-1 != gpid)
- setpgid (0, gpid);
- execvp (argv[2], &argv[2]);
- exit (1);
- }
- if (child > 0)
- {
- sleep (timeout);
- printf ("Child processes were killed after timeout of %u seconds\n",
- timeout);
- kill (0, SIGTERM);
- exit (1);
- }
- exit (1);
- }
- /* end of timeout_watchdog.c */
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