-- test the shared hash
create function setme(key text, val text) returns void language plperl as $$

  my $key = shift;
  my $val = shift;
  $_SHARED{$key}= $val;

$$;
create function getme(key text) returns text language plperl as $$

  my $key = shift;
  return $_SHARED{$key};

$$;
select setme('ourkey','ourval');
 setme 
-------
 
(1 row)

select getme('ourkey');
 getme  
--------
 ourval
(1 row)