#ifndef _SPECIFIC_COMM_H_
#define _SPECIFIC_COMM_H_ 1

/* Non standard include */
#include <commtech.h>

#define SLOTS 64 /* Value used in the article, section V.A */
#define SUB_SLOTS (BUF_SIZE / sizeof(void *))

struct lvl_2
{
	volatile void *chunk[SUB_SLOTS];
	volatile unsigned int flag : 1;
} __attribute__ ((aligned (CACHE_LINE_SIZE)));

struct comm
{
	struct lvl_2 queue[SLOTS] __attribute__ ((aligned (CACHE_LINE_SIZE)));
};

union ctrl
{
	int head;
	int tail;
};

__BEGIN_DECLS

extern __thread struct comm *comm;
extern __thread union ctrl ctrl __attribute__ ((aligned (CACHE_LINE_SIZE)));

// TODO: Make it send only one data
static inline void send(void **addr)
{
	static __thread int chkidx = 0;

	// If all slots are full, spin
	if (!chkidx)
		while (comm->queue[ctrl.tail].flag);

	// Enqueue a data item
	comm->queue[ctrl.tail].chunk[chkidx++] = addr;
	if (!(chkidx % SUB_SLOTS))
	{
		chkidx = 0;
		comm->queue[ctrl.tail].flag = 1;
		ctrl.tail = (ctrl.tail + 1) % SLOTS;
	}
}

__END_DECLS

#endif