func: bool qemu_co_enter_next(CoQueue *queue)
  
  {
  
      Coroutine *next;
  
  
  
      next = QSIMPLEQ_FIRST(&queue->entries);
  
      if (!next) {
  
          return false;
  
      }
  
  
  
      QSIMPLEQ_REMOVE_HEAD(&queue->entries, co_queue_next);
  
      qemu_coroutine_enter(next, NULL);
  
      return true;
  
  }
  