Notifies waiting consumer threads.
*/
+bool queue_ppd(Queue *queue, void *dat);
+/*
+ [Thread Safe]
+ Enqueues an element at the front of the queue.
+ Returns true if the enqueueing was successful (this is always the case if queue_fin
+ has not been called)
+
+ Notifies waiting consumer threads.
+*/
+
void *queue_deq(Queue *queue, void *trans);
/*
[Thread Safe]