> I appreciated the help. But the perl code in the elsif statement
> still doesn't execute until the perl code in the if statement.
> Any other suggestions? I'd like the two perl codes to execute at
> the same time.
> Maybe fork can't do this..
I think you may be misunderstanding what fork() does.
When fork() is called, then *entire* program is replicated (aside from
copy-on-write issues). The original copy receives from fork() the PID
of the new process; the child receives a 0. Aside from this difference,
there is *no* difference in the original and the copy. Thus,
my $pid;
if ($pid=fork()) { # I'm the parent
# ... code
} elsif (0 == $pid) { # I'm the child
# ... code
} else { # there was an error
# ... code
}
will follow an execution path determined by which copy is running, but
all will flow through simultaneously. It's like multithreading, but
with spawned, duplicated processes. Both branches of the code will be
executed at the same time, just in seperate copies of the program.
That help?
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