If the child dies, the parent should receive SIGCHLD. The CHLD handler can set a global flag to restart the child before sleeping again.

Another handy way to check that a child is running is to call kill 0, $childpid or spawn_another_child();

Don't wait inside a signal handler until a child starts. That gets you nested handlers, playing dangerous games with the kernel. Instead, try something in the parent's mainline code like:

sleep 1 until kill 0, $childpid;

After Compline,
Zaxo

In reply to Re: Awake from sleep() by Zaxo
in thread Awake from sleep() by cmilfo

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