Waitpid in c EXIT STATUS top waitpid has the following exit status values: 0 success 1 unspecified failure 2 system does not provide necessary functionality 3 timeout expired AUTHORS top Oct 19, 2013 · It's the shorthand for waitpid(-1, NULL, 0);, which will suspends the execution of the calling process until any one child process exits. int pid = fork(); . I know that it doesnot segfault or anything because i have a traceback function written that prints the last 10 addresses that the program accessed. what does the parameters in waitpid means? You can look up the manual of waitpid(3) for the meanings of its arguments. Nov 11, 2008 · Call wait (or waitpid) in a loop until all children are accounted for. Nov 3, 2015 · But we don't want wait()/waitpid() to block, because, in this case, our process has other things that it needs to do. Jan 21, 2014 · pid_t waitpid(pid_t pid, int *statusPtr, int options); 1. If you really want to wait for all children to exit, either omit the WNOHANG option to waitpid() or simply use wait() instead. #include <sys/wait. // In the parent process ProcessWatchdog wd(pid, 20s); // start a watchdog thread to kill the process after the timeout int rc; waitpid(pid, &rc, 0); // guaranteed to not hang forever And here's an example implementation of ProcessWatchdog that first tries SIGTERM, then SIGKILL. sxetm vco rflyc jjbum fkedgtm mqaqgq hqc ipicib vlfla pmvqj