1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Artificial memory access program for testing DAMON.
4 *
5 * Receives number of regions and size of each region from user. Allocate the
6 * regions and repeatedly access even numbered (starting from zero) regions.
7 */
8
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12 #include <time.h>
13
14 int main(int argc, char *argv[])
15 {
16 char **regions;
17 clock_t start_clock;
18 int nr_regions;
19 int sz_region;
20 int access_time_ms;
21 int i;
22
23 if (argc != 3) {
24 printf("Usage: %s <number> <size (bytes)>\n", argv[0]);
25 return -1;
26 }
27
28 nr_regions = atoi(argv[1]);
29 sz_region = atoi(argv[2]);
30
31 regions = malloc(sizeof(*regions) * nr_regions);
32 for (i = 0; i < nr_regions; i++)
33 regions[i] = malloc(sz_region);
34
35 while (1) {
36 for (i = 0; i < nr_regions; i++) {
37 if (i % 2 == 0)
38 memset(regions[i], i, sz_region);
39 }
40 }
41 return 0;
42 }
43
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