xref: /third_party/libuv/test/test-hrtime.c (revision e66f31c5)
1/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to
5 * deal in the Software without restriction, including without limitation the
6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 * sell copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
19 * IN THE SOFTWARE.
20 */
21
22#include "uv.h"
23#include "task.h"
24
25#ifndef MILLISEC
26# define MILLISEC 1000
27#endif
28
29#ifndef NANOSEC
30# define NANOSEC ((uint64_t) 1e9)
31#endif
32
33
34TEST_IMPL(hrtime) {
35  uint64_t a, b, diff;
36  int i = 75;
37  while (i > 0) {
38    a = uv_hrtime();
39    uv_sleep(45);
40    b = uv_hrtime();
41
42    diff = b - a;
43
44    /* The windows Sleep() function has only a resolution of 10-20 ms. Check
45     * that the difference between the two hrtime values has a reasonable
46     * lower bound.
47     */
48    ASSERT_UINT64_GT(diff, (uint64_t) 25 * NANOSEC / MILLISEC);
49    --i;
50  }
51  return 0;
52}
53
54
55TEST_IMPL(clock_gettime) {
56  uv_timespec64_t t;
57
58  ASSERT_EQ(UV_EINVAL, uv_clock_gettime(1337, &t));
59  ASSERT_EQ(UV_EFAULT, uv_clock_gettime(1337, NULL));
60  ASSERT_OK(uv_clock_gettime(UV_CLOCK_MONOTONIC, &t));
61  ASSERT_OK(uv_clock_gettime(UV_CLOCK_REALTIME, &t));
62  ASSERT_GT(1682500000000ll, t.tv_sec);  /* 2023-04-26T09:06:40.000Z */
63
64  return 0;
65}
66