// SPDX-License-Identifier: GPL-2.0 /* * Artificial memory access program for testing DAMON. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> int main(int argc, char *argv[]) { char **regions; clock_t start_clock; int nr_regions; int sz_region; int access_time_ms; int i; if (argc != 4) { printf("Usage: %s <number> <size (bytes)> <time (ms)>\n", argv[0]); return -1; } nr_regions = atoi(argv[1]); sz_region = atoi(argv[2]); access_time_ms = atoi(argv[3]); regions = malloc(sizeof(*regions) * nr_regions); for (i = 0; i < nr_regions; i++) regions[i] = malloc(sz_region); for (i = 0; i < nr_regions; i++) { start_clock = clock(); while ((clock() - start_clock) * 1000 / CLOCKS_PER_SEC < access_time_ms) memset(regions[i], i, 1024 * 1024 * 10); } return 0; }