Hello, Monks,

I'm trying to autoflush pipe, but it doesn't work. 
#!/usr/bin/perl -w

use strict;
use IO::Handle;
use POSIX qw /mkfifo/;

mkfifo "fifo", 0777 unless (-p "fifo");

pipe (PARENTR, SAPW);
pipe (SAPR, PARENTW);
SAPW->autoflush(1);
PARENTW->autoflush(1);

my $pid = fork;
if ($pid) {
    close PARENTR; close PARENTW;

    while (1) {
        open FIFOR, "fifo";
        my $line = <FIFOR>;
        close FIFOR;
        print SAPW $line;
        close SAPW; # don't want this
        print <SAPR>;
    }
} else {
    close SAPR; close SAPW;

    open STDIN , '<&PARENTR';
    open STDOUT, '>&PARENTW';

    exec "cat";
    die $!;
}

[download]
As you see, I have to close pipe SAPW, but I need it for next whiles.

Thank for your help.

In reply to Pipe autoflush by Zielony

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