what about multiple threads :-)

page 572-574 of camel3 suggests something along the lines of...

$fn = "filename_20020723141223_";
my $c = 1;
do {
    $fn .= "$c";
    $c++;
} until sysopen(FH, $fn, O_RDWR | O_CREAT | O_EXCL, 0600);
# now do I/O using $fh handle...
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