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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "timestamp.h"
#include <cmath>
#include <sys/time.h>
namespace fastos {
const TimeStamp::TimeT TimeStamp::MILLI;
const TimeStamp::TimeT TimeStamp::MICRO;
const TimeStamp::TimeT TimeStamp::NANO;
const TimeStamp::TimeT TimeStamp::US;
const TimeStamp::TimeT TimeStamp::MS;
const TimeStamp::TimeT TimeStamp::SEC;
const TimeStamp::TimeT TimeStamp::MINUTE;
std::string
TimeStamp::asString(double timeInSeconds)
{
double intpart;
double fractpart = std::modf(timeInSeconds, &intpart);
time_t timeStamp = (time_t)intpart;
struct tm timeStruct;
gmtime_r(&timeStamp, &timeStruct);
char timeString[128];
strftime(timeString, sizeof(timeString), "%F %T", &timeStruct);
char retval[128];
uint32_t milliSeconds = std::min((uint32_t)(fractpart * 1000.0), 999u);
snprintf(retval, sizeof(retval), "%s.%03u UTC", timeString, milliSeconds);
return std::string(retval);
}
int64_t ClockSystem::now()
{
struct timeval timeNow;
gettimeofday(&timeNow, nullptr);
int64_t ns = timeNow.tv_sec;
ns *= TimeStamp::NANO;
ns += timeNow.tv_usec*1000;
return ns;
}
}
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