Hi,

I have a parent process which spawns 4 child processes. Parent is handling SIGCHLD signal for child termination. Now i am killing one child process like - "kill -9 PID1". After that parent process receives SIGCHLD signal and kills the remaining 3 child processes running.

But these 3 child processes, terminated by parent process are sending SIGCHILD signal to parent process which i don't want. So how to avoid/discard the SIGCHILD signal in parent process for these 3 child processes killed??

And without exiting the parent process i have to spawn these 4 child processes again. so how to do this?

Child process exit causes OS to send SIGCHILD, but it can be ignored. Tell us which prog lang you are using and show relevant code section.