comment on

on second thought..this doesn't work that well with more then one fd open...it hangs on close($fd). Maybe there's an error in my code:

print "I'm $$\n;";
use FileHandle;

$fh = new FileHandle;
$fh1 = new FileHandle;
my $sleep_count = 0;

do {
        $pid = open($fh, "|-");
        unless (defined $pid) {
                warn "cannot fork: $!";
                die "bailing out" if $sleep_count++ > 6;
                sleep 10;
        }
} until defined $pid;
if ($pid) {
        print "I'm master($$) $pid...\n";
} else {
        print "Waiting for commands($$)..\n";
        while (<STDIN>) {
                print "GOT: $_\n"; # child's STDIN is parent's KID
        }
        exit;  # don't forget this
};


do {
        $pid1 = open($fh1, "|-");
        unless (defined $pid1) {
                warn "cannot fork: $!";
                die "bailing out" if $sleep_count++ > 6;
                sleep 10;
        }
} until defined $pid1;
if ($pid1) {
        print "I'm master($$) $pid1...\n";
} else {
        print "Waiting for commands($$)..\n";
        while (<STDIN>) {
                print "GOT: $_\n"; # child's STDIN is parent's KID
        }
        exit;  # don't forget this
};


my (@some_data)=qw[a be ce];
print "($$)PID: $pid\n";
print $fh @some_data;
print "($$) printing done, let's close:\n";
close($fh) || warn "kid exited $?";

print "($$)PID: $pid1\n";
print $fh1 @some_data;
print "($$) printing done, let's close:\n";
close($fh1) || warn "kid exited $?";


print "END FH TEST\n\n\n";
[download]

In reply to Re^3: How to tell a child what to do? by Eyck
in thread How to tell a child what to do? by Eyck

Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!

Titles consisting of a single word are discouraged, and in most cases are disallowed outright.

Read Where should I post X? if you're not absolutely sure you're posting in the right place.

Please read these before you post! —

Posts may use any of the Perl Monks Approved HTML tags:

a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr

You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)

	For:		Use:
	&		`&`
	<		`<`
	>		`>`
	[		`[`
	]		`]`

Link using PerlMonks shortcuts! What shortcuts can I use for linking?

See Writeup Formatting Tips and other pages linked from there for more info.


XP is just a number
	PerlMonks