blob: 1f1ce15b1605b38f2e7f9254c7a43448f05d3ff8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "android-base/chrono_utils.h"
#include <err.h>
#include <time.h>
#include <chrono>
#include <gtest/gtest.h>
namespace android {
namespace base {
#if defined(__linux__)
std::chrono::seconds GetBootTimeSeconds() {
struct timespec now;
if (clock_gettime(CLOCK_BOOTTIME, &now) != 0) {
err(1, "clock_gettime failed");
}
auto now_tp = boot_clock::time_point(std::chrono::seconds(now.tv_sec) +
std::chrono::nanoseconds(now.tv_nsec));
return std::chrono::duration_cast<std::chrono::seconds>(now_tp.time_since_epoch());
}
// Tests (at least) the seconds accuracy of the boot_clock::now() method.
TEST(ChronoUtilsTest, BootClockNowSeconds) {
auto now = GetBootTimeSeconds();
auto boot_seconds =
std::chrono::duration_cast<std::chrono::seconds>(boot_clock::now().time_since_epoch());
EXPECT_EQ(now, boot_seconds);
}
#endif // defined(__linux__)
} // namespace base
} // namespace android
|
