Escalonador SJF

 
void requestPrinter(int fileSize) {

		 lock(mutex);

		 		 while (busy) { enterQueue(Q, fileSize, mutex); }

		 		 busy = true;

		 unlock(mutex);

}

void releasePrinter(void) {

		 lock(mutex);

		 		 busy = false;

		 		 select(Q, mutex);

		 unlock(mutex);

}

void enterQueue(queue Q; int priority; key mutex) {

		 int s = freeSlot(Q);

		 Q.slots[s].free = false;

		 Q.slots[s].priority = priority;

		 Q.n++;

		 sleep(Q.slots[s].b, mutex);

		 Q.slots[s].free = true;

}

void select(queue Q; key mutex) {

		 if(Q.n > 0) {

		 		 int s = bestSlot(Q);

		 		 wakeup(Q.slots[s].b, mutex);

		 		 Q.n-;

		 }

}