// queue.h -- interface for a queue
#ifndef SAbstractQueue_H_
#define SAbstractQueue_H_
#include "mm.h" 
#include "pcsem.h"

template <typename T>
class SAbstractQueue
{
	public:
		SAbstractQueue() {}
		virtual unsigned int size() const = 0;
	    virtual bool add(const T &item)  = 0;// add item to end
	    virtual bool add_nowait(const T &item) = 0;
	    virtual bool add_timeout(const T &item, struct timespec *timeout) = 0;
	    virtual bool remove(T &item) = 0;
	    virtual bool remove_nowait(T &item) = 0;
	    virtual bool remove_timeout(T &item, struct timespec * timeout) = 0;


	    virtual T& operator[](unsigned i) = 0;
	    virtual ~SAbstractQueue() {}
};
#endif