#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <unistd.h>

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


__thread volatile void **shared_space;
__thread volatile int cons_idx = 0;
__thread volatile int prod_idx = 0;

int init_thread_comm(struct thread_comm *comm)
{
	if (posix_memalign((void *) &shared_space, CACHE_LINE_SIZE, SHARED_SPACE_SIZE))
	{
		fprintf(stderr, "Unable to allocate space for shared mem communication\n");
		return -1;
	}
	comm->shared_space = shared_space;
	comm->cons_idx = &cons_idx;
	comm->prod_idx = &prod_idx;
	return 0;
}

int end_thread_comm(void)
{
	return 0;
}

void reception(void (*on_receive)(void *))
{
	wait_initialization();
	/* printf("Activate the consumer...\n"); */
	while(cont)
	{
		int i;

		for (i = 0; i < nb_prod; i++)
		{
			int cons_idx;

			for(cons_idx = *tcomms[i].cons_idx; cons_idx != *tcomms[i].prod_idx; cons_idx = (cons_idx + 1) % SHARED_SPACE_VOIDPTR, *tcomms[i].cons_idx = cons_idx)
			{
				/*
				 * The behaviour of this is not documented but we know
				 * the values inside buf won't change during this affectation
				 */
				on_receive((void *) tcomms[i].shared_space[cons_idx]);
			}
		}
	}
}