Le Mercredi 30 mars 2005 à 14:17 -0400, zean zean a écrit : > Hi Hackers: > > Excuse for my badly English. which is the best form to wait the > finish of execution of a child.
It depends on the context of your program
(synchronous/asynchronous).
> My idea is:
>
> pid_t chilpid;
>
> while(childpid != wait(&status))
> ;
That's a possibility, you can catch SIGCHLD with a signal
handler (see signal(3), sigprocmask(2), sigaction(2)) which
would set a global flag, and then use a non-blocking waitpid(2)
or wait4(2) instead.
Note: What you suggested isn't really safe. You shouldn't
ignore wait(2) return status (could be -1 because something
unexpected happened, see ERRORS section from the manpage).
--
Florent Thoumie
[EMAIL PROTECTED]
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