On Tue, 13 Aug 2002, Ahmed Moustafa wrote:
> Ahmed Moustafa wrote:
> > Drieux wrote:
> >
> >>
> >>
> >> use POSIX ":sys_wait_h";
> >> #...
> >> do {
> >> $kid = waitpid(-1,&WNOHANG);
> >> } until $kid == -1;
> >
> >
> > Does the execution of the program wait to all the forked processes to
> > terminate?
>
> Perl Cookbook says "We use the WNOHANG flag to make waitpid immediately
> return 0 if there are no dead children".
Yes WNOHANG makes waitpid return immediately the -1 means wait for any
child process. This code will do a non-blocking wait for all child
processes.
>
> So, the above code doesn't pause the program, does it?
It will be in the do-until loop until all of it's children are dead.
perldoc -f waitpid
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