Is it safe to share MySQL query results object between several threads like this: 
use DBI;
use threads;

my $dbh = DBI->connect(...);
my $sth = $dbh->prepare("SELECT ...");
$sth->execute();

$thr1 = threads->new(\&some_sub, $sth);
$thr2 = threads->new(\&some_sub, $sth);

$sth->finish();
$dbh->disconnect();

$thr1->join; $thr2-join;

sub some_sub {
my ($db_source) = @_;
while (my $ref = $sth->fetchrow_hashref()) {
   ... do some processing there ...
}
}
The reason for this is to create a web scrapper which runs several threads each using different proxy/network interface and each thread sleeps some time between requests to avoid ban. I was thinking about Threads::Queue object first, but think it would be inefficient in terms of memory usage if database returns large set (because threads pause between requests a lot of data will be in memory for long time waiting for one of threads to dequeue them);

In reply to Sharing DBI between threads by bagent

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