// SPDX-License-Identifier: GPL-2.0
/*
 * Artificial memory access program for testing DAMON.
 *
 * Receives number of regions and size of each region from user.  Allocate the
 * regions and repeatedly access even numbered (starting from zero) regions.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char *argv[])
{
        char **regions;
        int nr_regions;
        int sz_region;
        int i;

        if (argc != 3) {
                printf("Usage: %s <number> <size (bytes)>\n", argv[0]);
                return -1;
        }

        nr_regions = atoi(argv[1]);
        sz_region = atoi(argv[2]);

        regions = malloc(sizeof(*regions) * nr_regions);
        for (i = 0; i < nr_regions; i++)
                regions[i] = malloc(sz_region);

        while (1) {
                for (i = 0; i < nr_regions; i++) {
                        if (i % 2 == 0)
                                memset(regions[i], i, sz_region);
                }
        }
        return 0;
}