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Linux: add support for GetClock_RealTimeMS #17672

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merged 2 commits into from
Apr 25, 2022
Merged

Linux: add support for GetClock_RealTimeMS #17672

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d4b1f59
Linux: add support for GetClock_RealTimeMS
bluebin14 Apr 23, 2022
7cf228f
Simplified GetClock_RealTimeMS logic
bluebin14 Apr 25, 2022
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43 changes: 40 additions & 3 deletions src/platform/Linux/SystemTimeSupport.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -52,17 +52,54 @@ Milliseconds64 ClockImpl::GetMonotonicMilliseconds64()

CHIP_ERROR ClockImpl::GetClock_RealTime(Clock::Microseconds64 & aCurTime)
{
return CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE;
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 = Clock::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(Clock::Milliseconds64 & aCurTime)
{
return CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE;
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Clock::Microseconds64 curTimeUs;
CHIP_ERROR err = GetClock_RealTime(curTimeUs);
if (err == CHIP_NO_ERROR)
{
aCurTime = std::chrono::duration_cast<Clock::Milliseconds64>(curTimeUs);
}
return err;
}

CHIP_ERROR ClockImpl::SetClock_RealTime(Clock::Microseconds64 aNewCurTime)
{
return CHIP_ERROR_UNSUPPORTED_CHIP_FEATURE;
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 %ld (%04d/%02d/%02d %02d:%02d:%02d UTC)", 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
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