Fixes test 4

Assignment8/code/main.c

@@ -25,6 +25,11 @@ double timeToProcessRequest(int position, int destination) {
 	return time;
 }
 
+int diskMovement(int position, int destination) {
+	int distance = destination - position;
+	return abs(distance);
+}
+
 // Your simulated disk is of size 10000, numbered from 0 to 9999.
 
 // In first come first the time the request comes in is irrelevant
@@ -34,7 +39,7 @@ void fcfs(int start) {
 		DiskRequest request = dequeue(queue);
 		while (seekTime < request.time) { seekTime++; }
 		seekTime += timeToProcessRequest(position, request.position);
-		movement += abs(position - request.position);
+		movement += diskMovement(position, request.position);
 		position = request.position;
 	}
 }
@@ -47,18 +52,24 @@ void cscan(int start) {
 		if (request == NULL) {
 			seekTime++;
 		} else {
-			// There is a bug here, will need to revisit
 			if (request->position < position) {
-				//seekTime += timeToProcessRequest(position, 9999);
+				seekTime += timeToProcessRequest(position, 9999);
-				//seekTime += timeToProcessRequest(9999, 0);
+				movement += diskMovement(position, 9999);
-				//movement += abs(position - 9999);
+				// Special case for when we are at the end of the disk, wrap around to the beginning
-				//movement += abs(9999 - 0);
+				seekTime += timeToProcessRequest(9999, 10000); // 10000 is the beginning of the disk
+				movement += diskMovement(9999, 10000);
 				position = 0;
+				// Rescan for closest, so we can efficiently handle requests
+				request = findClosest(queue, position, seekTime);
 			}
 			seekTime += timeToProcessRequest(position, request->position);
-			movement += abs(position - request->position);
+			movement += diskMovement(position, request->position);
 			position = request->position;
 		}
+		if (request != NULL) {
+			delete(queue, *request);
+		}
+		//printf("Movement: %i Time:%.1lf\n", movement, seekTime);
 	}
 }