Hello, I try to avoid blocking reads to a FIFO with using select. It works, but only if I first write something to the FIFO. Is it the normal behaviour, or do I still something wrong? 
my $s = IO::Select->new;
my $dxc_fifo="/tmp/dxc_fifo"; 
my $fifo_str;

open my $fifo_fh, "+>", "$dxc_fifo"
or die "could not open $dxc_fifo\n";

$s->add($fifo_fh);

print $fifo_fh "START\n";
        
my $i=0;
while (1) {
    sleep 1;
    $i++;
    print "loop #$i \n";
    my @files = $s->can_read(.25);
    if (@files) {
        for my $fh (@files) {
            my $line = <$fh>;
            if ($line) {
            print "from pipe: $line";
        }            
        }
    }      
}

[download]
When I open FIFO with "<" and omit the print "START", loop starts running only after printing something from external program to the FIFO. But I want the loop to run immediately. Thanks, A.

In reply to First SELECT of FIFO still blocked ? by Anonymous Monk

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