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construct/ircd/timedate.cc
2020-12-22 18:40:30 -08:00

256 lines
4.3 KiB
C++

// Matrix Construct
//
// Copyright (C) Matrix Construct Developers, Authors & Contributors
// Copyright (C) 2016-2019 Jason Volk <jason@zemos.net>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice is present in all copies. The
// full license for this software is available in the LICENSE file.
#include <RB_INC_SYS_TIME_H
decltype(ircd::rfc7231_fmt)
ircd::rfc7231_fmt
{
// "Load bearing comment"
"%a, %d %b %Y %T %z"
};
std::ostream &
ircd::operator<<(std::ostream &s, const system_point &tp)
{
char buf[96];
return (s << timef(buf, tp));
}
std::ostream &
ircd::operator<<(std::ostream &s, const microtime_t &t)
{
char buf[64];
s << microtime(buf);
return s;
}
ircd::string_view
ircd::smalldate(const mutable_buffer &buf,
const time_t &ltime)
{
struct tm lt;
localtime_r(&ltime, &lt);
const auto len
{
::snprintf(data(buf), size(buf), "%04d/%02d/%02d %02d:%02d:%02d",
lt.tm_year + 1900,
lt.tm_mon + 1,
lt.tm_mday,
lt.tm_hour,
lt.tm_min,
lt.tm_sec)
};
return
{
data(buf), size_t(len)
};
}
ircd::string_view
ircd::microdate(const mutable_buffer &buf)
{
auto mt
{
microtime()
};
struct tm lt;
localtime_r(&mt.first, &lt);
const auto length
{
::snprintf(data(buf), size(buf), "%04d/%02d/%02d %02d:%02d:%02d.%06d",
lt.tm_year + 1900,
lt.tm_mon + 1,
lt.tm_mday,
lt.tm_hour,
lt.tm_min,
lt.tm_sec,
mt.second)
};
return string_view
{
data(buf), size_t(length)
};
}
ircd::string_view
ircd::ago(const mutable_buffer &buf,
const system_point &tp,
const uint &fmt)
{
const auto diff
{
now<system_point>() - tp
};
char tmp[64];
return fmt::sprintf
{
buf, "%s ago",
pretty(tmp, diff, fmt),
};
}
ircd::string_view
ircd::timef(const mutable_buffer &out,
const char *const &fmt)
{
const auto epoch
{
time()
};
return timef(out, epoch, fmt);
}
ircd::string_view
ircd::timef(const mutable_buffer &out,
localtime_t,
const char *const &fmt)
{
const auto epoch
{
time()
};
return timef(out, epoch, localtime, fmt);
}
ircd::string_view
ircd::timef(const mutable_buffer &out,
const system_point &epoch,
localtime_t,
const char *const &fmt)
{
const time_t t
{
duration_cast<seconds>(tse(epoch)).count()
};
return timef(out, t, localtime, fmt);
}
ircd::string_view
ircd::timef(const mutable_buffer &out,
const system_point &epoch,
const char *const &fmt)
{
const time_t t
{
duration_cast<seconds>(tse(epoch)).count()
};
return timef(out, t, fmt);
}
ircd::string_view
ircd::timef(const mutable_buffer &out,
const time_t &epoch,
localtime_t,
const char *const &fmt)
{
struct tm tm;
localtime_r(&epoch, &tm);
return timef(out, tm, fmt);
}
ircd::string_view
ircd::timef(const mutable_buffer &out,
const time_t &epoch,
const char *const &fmt)
{
struct tm tm;
gmtime_r(&epoch, &tm);
return timef(out, tm, fmt);
}
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat-nonliteral"
ircd::string_view
ircd::timef(const mutable_buffer &out,
const struct tm &tm,
const char *const &fmt)
{
const auto length
{
::strftime(data(out), size(out), fmt, &tm)
};
return
{
data(out), size_t(length)
};
}
#pragma GCC diagnostic pop
//
// microtime suite
//
ircd::string_view
ircd::microtime(const mutable_buffer &buf)
{
const auto mt
{
microtime()
};
const auto length
{
::snprintf(data(buf), size(buf), "%zd.%06d", mt.first, mt.second)
};
return string_view
{
data(buf), size_t(length)
};
}
#if defined(HAVE_GETTIMEOFDAY)
[[gnu::hot]]
ircd::microtime_t
ircd::microtime()
{
struct timeval tv;
if(unlikely(gettimeofday(&tv, nullptr) == -1))
{
throw_system_error(errno);
__builtin_unreachable();
}
return
{
tv.tv_sec, tv.tv_usec
};
}
#else
[[gnu::hot]]
ircd::microtime_t
ircd::microtime()
{
const time_t time
{
ircd::time<microseconds>()
};
const time_t remain
{
time % 1'000'000L,
};
return
{
(time - remain) / 1'000'000, remain
};
}
#endif