//
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// Copyright (C) 2013 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 "update_engine/common/clock.h"
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#include <time.h>
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namespace chromeos_update_engine {
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base::Time Clock::GetWallclockTime() {
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return base::Time::Now();
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}
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base::Time Clock::GetMonotonicTime() {
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struct timespec now_ts;
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if (clock_gettime(CLOCK_MONOTONIC_RAW, &now_ts) != 0) {
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// Avoid logging this as an error as call-sites may call this very
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// often and we don't want to fill up the disk. Note that this
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// only fails if running on ancient kernels (CLOCK_MONOTONIC_RAW
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// was added in Linux 2.6.28) so it never fails on a ChromeOS
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// device.
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return base::Time();
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}
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struct timeval now_tv;
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now_tv.tv_sec = now_ts.tv_sec;
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now_tv.tv_usec = now_ts.tv_nsec / base::Time::kNanosecondsPerMicrosecond;
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return base::Time::FromTimeVal(now_tv);
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}
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base::Time Clock::GetBootTime() {
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struct timespec now_ts;
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if (clock_gettime(CLOCK_BOOTTIME, &now_ts) != 0) {
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// Avoid logging this as an error as call-sites may call this very
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// often and we don't want to fill up the disk. Note that this
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// only fails if running on ancient kernels (CLOCK_BOOTTIME was
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// added in Linux 2.6.39) so it never fails on a ChromeOS device.
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return base::Time();
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}
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struct timeval now_tv;
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now_tv.tv_sec = now_ts.tv_sec;
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now_tv.tv_usec = now_ts.tv_nsec / base::Time::kNanosecondsPerMicrosecond;
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return base::Time::FromTimeVal(now_tv);
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}
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} // namespace chromeos_update_engine
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