title: Show all current locks from get_lock
body: <p>Is there any way to select / show all current locks that have been taken out using the <a href="http://dev.mysql.com/doc/refman/en/miscellaneous-functions.html#function_get-lock" rel="noreferrer"><code>GET_LOCK</code> function</a>?</p>
  
  <p>Note that <code>GET_LOCK</code> locks are different from table locks, like those acquired with <code>LOCK TABLES</code> - readers who want to know how to see <em>those</em> locks should read <a href="https://stackoverflow.com/q/2499976/1709587">Detecting locked tables (locked by LOCK TABLE)</a></p>