fsfw/src/fsfw/osal/linux/Clock.cpp

158 lines
4.5 KiB
C++

#include "fsfw/timemanager/Clock.h"
#include <linux/sysinfo.h>
#include <sys/sysinfo.h>
#include <sys/time.h>
#include <time.h>
#include <unistd.h>
#include <fstream>
#include "fsfw/ipc/MutexGuard.h"
#include "fsfw/serviceinterface/ServiceInterface.h"
uint32_t Clock::getTicksPerSecond(void) {
uint32_t ticks = sysconf(_SC_CLK_TCK);
return ticks;
}
ReturnValue_t Clock::setClock(const TimeOfDay_t* time) {
timespec timeUnix;
timeval timeTimeval;
convertTimeOfDayToTimeval(time, &timeTimeval);
timeUnix.tv_sec = timeTimeval.tv_sec;
timeUnix.tv_nsec = (__syscall_slong_t)timeTimeval.tv_usec * 1000;
int status = clock_settime(CLOCK_REALTIME, &timeUnix);
if (status != 0) {
// TODO errno
return HasReturnvaluesIF::RETURN_FAILED;
}
return HasReturnvaluesIF::RETURN_OK;
}
ReturnValue_t Clock::setClock(const timeval* time) {
timespec timeUnix;
timeUnix.tv_sec = time->tv_sec;
timeUnix.tv_nsec = (__syscall_slong_t)time->tv_usec * 1000;
int status = clock_settime(CLOCK_REALTIME, &timeUnix);
if (status != 0) {
// TODO errno
return HasReturnvaluesIF::RETURN_FAILED;
}
return HasReturnvaluesIF::RETURN_OK;
}
ReturnValue_t Clock::getClock_timeval(timeval* time) {
timespec timeUnix;
int status = clock_gettime(CLOCK_REALTIME, &timeUnix);
if (status != 0) {
return HasReturnvaluesIF::RETURN_FAILED;
}
time->tv_sec = timeUnix.tv_sec;
time->tv_usec = timeUnix.tv_nsec / 1000.0;
return HasReturnvaluesIF::RETURN_OK;
}
ReturnValue_t Clock::getClock_usecs(uint64_t* time) {
timeval timeVal;
ReturnValue_t result = getClock_timeval(&timeVal);
if (result != HasReturnvaluesIF::RETURN_OK) {
return result;
}
*time = (uint64_t)timeVal.tv_sec * 1e6 + timeVal.tv_usec;
return HasReturnvaluesIF::RETURN_OK;
}
timeval Clock::getUptime() {
timeval uptime;
auto result = getUptime(&uptime);
if (result != HasReturnvaluesIF::RETURN_OK) {
#if FSFW_CPP_OSTREAM_ENABLED == 1
sif::error << "Clock::getUptime: Error getting uptime" << std::endl;
#endif
}
return uptime;
}
ReturnValue_t Clock::getUptime(timeval* uptime) {
// TODO This is not posix compatible and delivers only seconds precision
// Linux specific file read but more precise.
double uptimeSeconds;
if (std::ifstream("/proc/uptime", std::ios::in) >> uptimeSeconds) {
uptime->tv_sec = uptimeSeconds;
uptime->tv_usec = uptimeSeconds * (double)1e6 - (uptime->tv_sec * 1e6);
}
return HasReturnvaluesIF::RETURN_OK;
}
// Wait for new FSFW Clock function delivering seconds uptime.
// uint32_t Clock::getUptimeSeconds() {
// //TODO This is not posix compatible and delivers only seconds precision
// struct sysinfo sysInfo;
// int result = sysinfo(&sysInfo);
// if(result != 0){
// return HasReturnvaluesIF::RETURN_FAILED;
// }
// return sysInfo.uptime;
//}
ReturnValue_t Clock::getUptime(uint32_t* uptimeMs) {
timeval uptime;
ReturnValue_t result = getUptime(&uptime);
if (result != HasReturnvaluesIF::RETURN_OK) {
return result;
}
*uptimeMs = uptime.tv_sec * 1e3 + uptime.tv_usec / 1e3;
return HasReturnvaluesIF::RETURN_OK;
}
ReturnValue_t Clock::getDateAndTime(TimeOfDay_t* time) {
timespec timeUnix;
int status = clock_gettime(CLOCK_REALTIME, &timeUnix);
if (status != 0) {
// TODO errno
return HasReturnvaluesIF::RETURN_FAILED;
}
ReturnValue_t result = checkOrCreateClockMutex();
if (result != HasReturnvaluesIF::RETURN_OK) {
return result;
}
MutexGuard helper(timeMutex);
// gmtime writes its output in a global buffer which is not Thread Safe
// Therefore we have to use a Mutex here
struct tm* timeInfo;
timeInfo = gmtime(&timeUnix.tv_sec);
time->year = timeInfo->tm_year + 1900;
time->month = timeInfo->tm_mon + 1;
time->day = timeInfo->tm_mday;
time->hour = timeInfo->tm_hour;
time->minute = timeInfo->tm_min;
time->second = timeInfo->tm_sec;
time->usecond = timeUnix.tv_nsec / 1000.0;
return HasReturnvaluesIF::RETURN_OK;
}
ReturnValue_t Clock::convertTimeOfDayToTimeval(const TimeOfDay_t* from, timeval* to) {
tm fromTm;
// Note: Fails for years before AD
fromTm.tm_year = from->year - 1900;
fromTm.tm_mon = from->month - 1;
fromTm.tm_mday = from->day;
fromTm.tm_hour = from->hour;
fromTm.tm_min = from->minute;
fromTm.tm_sec = from->second;
fromTm.tm_isdst = 0;
to->tv_sec = timegm(&fromTm);
to->tv_usec = from->usecond;
return HasReturnvaluesIF::RETURN_OK;
}
ReturnValue_t Clock::convertTimevalToJD2000(timeval time, double* JD2000) {
*JD2000 = (time.tv_sec - 946728000. + time.tv_usec / 1000000.) / 24. / 3600.;
return HasReturnvaluesIF::RETURN_OK;
}