On Fri, Jun 14, 2019 at 1:13 AM Valdis Klētnieks <valdis.kletnieks@xxxxxx> wrote: > > On Thu, 13 Jun 2019 13:22:12 +0530, Shyam Saini said: > > > from command line we use ctrl-z to stop execution of a foreground > > process but you can program > > SIGTSTP signal handler in your application code to do the same. > > Note that if you simply fail to include a signal handler for SIGSTOP and > SIGCONT, it will Do The Right Thing. The only programs that need worry about > SIGTSTP are ones like 'vi' that may want to do something (like restore the > terminal state from raw to cooked mode, etc) before they stop. That's why you > can control-z /bin/cat without it having to include a signal handler for it. > > % kill -STOP `pidof process-to-stop` # stop it > % kill -CONT `pidof process-to-stop` # and make it run again. > > No source code modifications needed. No source needed. > > Now, if you want to make it stop at a *specific point*, then you're into > ptrace territory, and source will be helpful. > Yes, I think ptrace can serve our purpose. Thank you so much. _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
