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/*
*
* Copyright (c) 2018 Nest Labs, Inc.
* All rights reserved.
*
* 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.
*/
/**
* @file
* Provides implementations of the CHIP System Layer platform
* time/clock functions that are suitable for use on the Posix platform.
*/
#include <platform/internal/CHIPDeviceLayerInternal.h>
#include <lib/support/TimeUtils.h>
#include <lib/support/logging/CHIPLogging.h>
#include <chrono>
#include <errno.h>
#include <inttypes.h>
#include <sys/time.h>
namespace chip {
namespace System {
namespace Clock {
namespace Internal {
ClockImpl gClockImpl;
} // namespace Internal
Microseconds64 ClockImpl::GetMonotonicMicroseconds64()
{
return std::chrono::duration_cast<Microseconds64>(std::chrono::steady_clock::now().time_since_epoch());
}
Milliseconds64 ClockImpl::GetMonotonicMilliseconds64()
{
return std::chrono::duration_cast<Milliseconds64>(std::chrono::steady_clock::now().time_since_epoch());
}
CHIP_ERROR ClockImpl::GetClock_RealTime(Microseconds64 & aCurTime)
{
struct timeval tv;
if (gettimeofday(&tv, nullptr) != 0)
{
return CHIP_ERROR_POSIX(errno);
}
if (tv.tv_sec < CHIP_SYSTEM_CONFIG_VALID_REAL_TIME_THRESHOLD)
{
return CHIP_ERROR_REAL_TIME_NOT_SYNCED;
}
if (tv.tv_usec < 0)
{
return CHIP_ERROR_REAL_TIME_NOT_SYNCED;
}
static_assert(CHIP_SYSTEM_CONFIG_VALID_REAL_TIME_THRESHOLD >= 0, "We might be letting through negative tv_sec values!");
aCurTime = Microseconds64((static_cast<uint64_t>(tv.tv_sec) * UINT64_C(1000000)) + static_cast<uint64_t>(tv.tv_usec));
return CHIP_NO_ERROR;
}
CHIP_ERROR ClockImpl::GetClock_RealTimeMS(Milliseconds64 & aCurTime)
{
Microseconds64 curTimeUs;
auto err = GetClock_RealTime(curTimeUs);
aCurTime = std::chrono::duration_cast<Milliseconds64>(curTimeUs);
return err;
}
CHIP_ERROR ClockImpl::SetClock_RealTime(Microseconds64 aNewCurTime)
{
struct timeval tv;
tv.tv_sec = static_cast<time_t>(aNewCurTime.count() / UINT64_C(1000000));
tv.tv_usec = static_cast<long>(aNewCurTime.count() % UINT64_C(1000000));
if (settimeofday(&tv, nullptr) != 0)
{
return (errno == EPERM) ? CHIP_ERROR_ACCESS_DENIED : CHIP_ERROR_POSIX(errno);
}
#if CHIP_PROGRESS_LOGGING
{
const time_t timep = tv.tv_sec;
struct tm calendar;
localtime_r(&timep, &calendar);
ChipLogProgress(DeviceLayer, "Real time clock set to %lld (%04d/%02d/%02d %02d:%02d:%02d UTC)",
static_cast<long long>(tv.tv_sec), calendar.tm_year, calendar.tm_mon, calendar.tm_mday, calendar.tm_hour,
calendar.tm_min, calendar.tm_sec);
}
#endif // CHIP_PROGRESS_LOGGING
return CHIP_NO_ERROR;
}
} // namespace Clock
} // namespace System
} // namespace chip