blob: fea222bda9c135689c371a4c548627cfae06fae2 [file] [log] [blame]
//
// Copyright (C) 2013 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 "update_engine/clock.h"
#include <time.h>
namespace chromeos_update_engine {
base::Time Clock::GetWallclockTime() {
return base::Time::Now();
}
base::Time Clock::GetMonotonicTime() {
struct timespec now_ts;
if (clock_gettime(CLOCK_MONOTONIC_RAW, &now_ts) != 0) {
// Avoid logging this as an error as call-sites may call this very
// often and we don't want to fill up the disk. Note that this
// only fails if running on ancient kernels (CLOCK_MONOTONIC_RAW
// was added in Linux 2.6.28) so it never fails on a ChromeOS
// device.
return base::Time();
}
struct timeval now_tv;
now_tv.tv_sec = now_ts.tv_sec;
now_tv.tv_usec = now_ts.tv_nsec/base::Time::kNanosecondsPerMicrosecond;
return base::Time::FromTimeVal(now_tv);
}
base::Time Clock::GetBootTime() {
struct timespec now_ts;
if (clock_gettime(CLOCK_BOOTTIME, &now_ts) != 0) {
// Avoid logging this as an error as call-sites may call this very
// often and we don't want to fill up the disk. Note that this
// only fails if running on ancient kernels (CLOCK_BOOTTIME was
// added in Linux 2.6.39) so it never fails on a ChromeOS device.
return base::Time();
}
struct timeval now_tv;
now_tv.tv_sec = now_ts.tv_sec;
now_tv.tv_usec = now_ts.tv_nsec/base::Time::kNanosecondsPerMicrosecond;
return base::Time::FromTimeVal(now_tv);
}
} // namespace chromeos_update_engine