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A Service Queue in the NMS
Listing 2 shows a queue element type and a class interface that provides a simple queue.
Listing 2 Queue Type and Class
struct QueueElement
{
char* requiredOperation;
QueueElement* nextQueueElement;
};
typedef QueueElement* QueueElementPtr;
class NMSServiceQueue
{
public:
explicit NMSServiceQueue(void);
virtual ~NMSServiceQueue(void);
void add(QueueElementPtr serviceRequest);
const QueueElementPtr remove(void);
void examineQueue(void);
bool queueIsEmpty() const;
private:
QueueElementPtr startOfQueue;
QueueElementPtr endOfQueue;
};
Listing 2 shows a queue data type and a class for manipulating data structures made up of a queue instance. The queue allows for elements to be added at one end and removed at the opposite end.