CODEWITHSUNDEEP
clinuxprocess
Jorge Vega Sánchez
Jorge Vega Sánchez

Reputation: 7590

Kill process when father process ends with Control+C

I have a program with two processes. One of them could terminate or exit because an exception. While i'm testing the program I finish it using Control+c but the child process is still running.

Is there any option to kill the process when I push control+c or when the father process terminates.

Upvotes: 3

Views: 693

Answers (3)

hornetbzz
hornetbzz

Reputation: 9357

You can find all the answers you need here.
For instance, you can trap the CTRL+C and run a sub function on the SIGINT signal, that manages the way you want to exit or kill the running PID(s).

non functional example to illustrate the principle 

SIGINT=2
trap 'clean_exit' $SIGINT
# other thgs in your main prog
function clean_exit(){
   # define SIGTERM and your $pid according to your need
   kill -$SIGTERM $pid
   #other things to  do
}

Upvotes: 0

mah
mah

Reputation: 39797

There's no option to automate this however you can code your applications to support it. A pre-requisite is that the process which wants the other to terminate must have its process id; this is the value the parent receives back from a fork() call.

Give each process a signal handler for SIGINT - when control-C is pressed, SIGINT is sent to the process. In this signal handler, send the signal to your other process and then exit().

Upvotes: 6

Luchian Grigore
Luchian Grigore

Reputation: 258548

You can start a listener on the child process that periodically checks whether the parent process is still running.

Upvotes: 1

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