Files
ternfs-XTXMarkets/cpp/Time.cpp
Francesco Mazzoli c1434ae040 Read/write spans
2022-12-13 22:48:35 +00:00

33 lines
936 B
C++

#include <bits/types/struct_timespec.h>
#include <cstdio>
#include <time.h>
#include "Exception.hpp"
#include "Time.hpp"
#include "Assert.hpp"
EggsTime eggsNow() {
struct timespec now;
if (clock_gettime(CLOCK_REALTIME, &now) != 0) {
throw SYSCALL_EXCEPTION("clock_gettime");
}
return EggsTime(((uint64_t)now.tv_nsec + ((uint64_t)now.tv_sec * 1'000'000'000ull)) - EGGS_EPOCH);
}
std::ostream& operator<<(std::ostream& out, EggsTime eggst) {
time_t secs = (EGGS_EPOCH + eggst.ns) / 1'000'000'000ull;
uint64_t nsecs = eggst.ns % 1'000'000'00ull;
struct tm tm;
if (gmtime_r(&secs, &tm) == nullptr) {
throw SYSCALL_EXCEPTION("gmtime_r");
}
// "2006-01-02T15:04:05.999999999"
char buf[31];
ALWAYS_ASSERT(strftime(buf, 29, "%Y-%m-%dT%H:%M:%S.", &tm) == 20);
ALWAYS_ASSERT(snprintf(buf+20, 10, "%09lu", nsecs) == 9);
buf[30] = '\0';
out << buf;
return out;
}