atexit

I'm very new to c and programming and need some help. In c on linux(cygwin) I am required to remove all child processes at exit. I have looked at the other similar questions but can't get it to work. I've tried- atexit(killzombies); //in parent process void killzombies(void) { printf("works"); kill(0, SIGTERM); printf("works"); if (waitpid(-1, SIGCHLD, WNOHANG) < 0) printf("works"); } for some reason, "works" doesn't even print ever. I press ctrl + c to exit. ALSO I have tried- prctl(PR_SET_PDEATHSIG, SIGHUP); //in child process signal(SIGHUP, killMe); void killMe() { printf("works"); exit(1);

Sorry in advance, this is going to be long ... Possibly related: Python Multiprocessing atexit Error "Error in atexit._run_exitfuncs" Definitely related: python parallel map (multiprocessing.Pool.map) with global data Keyboard Interrupts with python's multiprocessing Pool Here's a "simple" script I hacked together to illustrate my problem... import time import multiprocessing as multi import atexit cleanup_stuff=multi.Manager().list([]) ################################################## # Some code to allow keyboard interrupts ################################################## was_interrupted

I have a python process which runs in background, and I would like it to generate some output only when the script is terminated. def handle_exit(): print('\nAll files saved in ' + directory) generate_output() atexit.register(handle_exit) Calling raising a KeyboardInterupt exception and sys.exit() calls handle_exit() properly, but if I were to do kill {PID} from the terminal it terminates the script without calling handle_exit(). Is there a way to terminate the process that is running in the background, and still have it run handle_exit() before terminating? Try signal.signal . It allows to

I am new to C programming. I used to think using exit() was the cleanest way of process termination (as it is capable of removing temporary files, closing open files, normal process termination...), but when I tried man exit command on the terminal (Ubuntu 16.04.5, gcc 5.4.0) I saw the following line: The exit() function uses a global variable that is not protected, so it is not thread-safe. After that I tried to make some research about better replacement for exit() (to change my programming behavior from the beginning). While doing that I faced with this question in which side effects of