1 /*
2 * Copyright (c) 2025 Tenstorrent AI ULC
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <sys/times.h>
8
9 #include <zephyr/kernel.h>
10 #include <zephyr/sys/util.h>
11 #include <zephyr/ztest.h>
12
ZTEST(posix_multi_process,test_times)13 ZTEST(posix_multi_process, test_times)
14 {
15 static const struct {
16 const char *name;
17 size_t offset;
18 } fields[] = {
19 {
20 .name = "utime",
21 .offset = offsetof(struct tms, tms_utime),
22 },
23 {
24 .name = "stime",
25 .offset = offsetof(struct tms, tms_stime),
26 },
27 {
28 .name = "cutime",
29 .offset = offsetof(struct tms, tms_cutime),
30 },
31 {
32 .name = "cstime",
33 .offset = offsetof(struct tms, tms_cstime),
34 },
35 };
36 struct tms test_tms[2] = {};
37 clock_t rtime[2];
38
39 rtime[0] = times(&test_tms[0]);
40 k_msleep(MSEC_PER_SEC);
41 rtime[1] = times(&test_tms[1]);
42
43 zexpect_not_equal(rtime[0], -1);
44 zexpect_not_equal(rtime[1], -1);
45
46 printk("t0: rtime: %ld utime: %ld stime: %ld cutime: %ld cstime: %ld\n", rtime[0],
47 test_tms[0].tms_utime, test_tms[0].tms_stime, test_tms[0].tms_cutime,
48 test_tms[0].tms_cstime);
49 printk("t1: rtime: %ld utime: %ld stime: %ld cutime: %ld cstime: %ld\n", rtime[1],
50 test_tms[1].tms_utime, test_tms[1].tms_stime, test_tms[1].tms_cutime,
51 test_tms[1].tms_cstime);
52
53 ARRAY_FOR_EACH(fields, i) {
54 const char *name = fields[i].name;
55 size_t offset = fields[i].offset;
56
57 clock_t t0 = *(clock_t *)((uint8_t *)&test_tms[0] + offset);
58 clock_t t1 = *(clock_t *)((uint8_t *)&test_tms[1] + offset);
59
60 zexpect_true(t1 >= t0, "time moved backward for tms_%s: t0: %ld t1: %ld", name, t0,
61 t1);
62 }
63 }
64
