26f40c04c3
Refactored init/utils/boot_clock into base/chrono_utils. Bug: 34352037 Test: none Change-Id: Ied0c00867336b85922369d7ff37520e3d28fc61e
47 lines
No EOL
1.4 KiB
C++
47 lines
No EOL
1.4 KiB
C++
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "android-base/chrono_utils.h"
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#include <time.h>
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#include <chrono>
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#include <gtest/gtest.h>
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namespace android {
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namespace base {
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std::chrono::seconds GetBootTimeSeconds() {
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struct timespec now;
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clock_gettime(CLOCK_BOOTTIME, &now);
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auto now_tp = boot_clock::time_point(
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std::chrono::seconds(now.tv_sec) + std::chrono::nanoseconds(now.tv_nsec));
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return std::chrono::duration_cast<std::chrono::seconds>(
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now_tp.time_since_epoch());
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}
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// Tests (at least) the seconds accuracy of the boot_clock::now() method.
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TEST(ChronoUtilsTest, BootClockNowSeconds) {
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auto now = GetBootTimeSeconds();
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auto boot_seconds = std::chrono::duration_cast<std::chrono::seconds>(
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boot_clock::now().time_since_epoch());
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EXPECT_EQ(now, boot_seconds);
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}
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} // namespace base
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} // namespace android
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