Slightly OT: SIGKILL (force quit) and child process termination
Slightly OT: SIGKILL (force quit) and child process termination
- Subject: Slightly OT: SIGKILL (force quit) and child process termination
- From: Guy Meyer <email@hidden>
- Date: Tue, 28 Nov 2006 18:18:29 +0200
My application uses a child process, which is launched by NSTask.
If the parent process is sent a SIGKILL the child process is left
orphaned and continues to run, while I am interested in termination.
One solution to the problem is to implement a periodic IPC between
the processes. Another is to regularly check parent pid existence. I
am not interested in these solutions.
Looking at Terminal.app and it is child processes (login, bash), when
you SIGKILL one of them, for example bash, the child process that
had been launched through it is also being killed. If you SIGKILL the
terminal all its child processes are also killed.
Obviously, as SIGKILL is none catchable the SIGKILL is also being
sent by the Kernel to the child processes.
How can I achieve same behavior ?
Thanks
Guy
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