<?php
function feeds_cron_import_cron() {

  $myFeed1 = feeds_source('diamond_product_type_importer_3');
  while (FEEDS_BATCH_COMPLETE != $myFeed1->import());

}

function feeds_cron_import_feeds_after_import(FeedsSource $source) {

if ($source->id == 'diamond_product_type_importer_3') {

    $myFeed2 = feeds_source('diamond_node_importer_3');
    while (FEEDS_BATCH_COMPLETE != $myFeed2->import());

  }

}