protected function splitTask(Gpf_Db_Task $task)
{
$workingAreaTo = $task->getWorkingAreaTo();
$splitNumber = intval(($task->getWorkingAreaTo() - $task->getWorkingAreaFrom()) / 2);
$task->setWorkingAreaTo($task->getWorkingAreaFrom() + $splitNumber);
$task->update();
if ($task->get(Gpf_Db_Table_Tasks::ID) == $this->task->get(Gpf_Db_Table_Tasks::ID)) {
$this->task = $task;
}
$this->createWorker($task->getWorkingAreaFrom() + $splitNumber + 1, $workingAreaTo);
}