mirror of
https://github.com/matrix-construct/construct
synced 2024-08-17 07:04:43 +02:00
220 lines
5.1 KiB
C++
220 lines
5.1 KiB
C++
/*
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* Copyright (C) 2016 Charybdis Development Team
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* Copyright (C) 2016 Jason Volk <jason@zemos.net>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#pragma once
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#define HAVE_IRCD_UTIL_DATE_H
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namespace ircd
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{
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using std::chrono::hours;
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using std::chrono::seconds;
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using std::chrono::milliseconds;
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using std::chrono::microseconds;
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using std::chrono::nanoseconds;
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using std::chrono::duration_cast;
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using std::chrono::system_clock;
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using std::chrono::steady_clock;
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using std::chrono::high_resolution_clock;
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using std::chrono::time_point;
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using namespace std::literals::chrono_literals;
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using microtime_t = std::pair<time_t, int32_t>;
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using steady_point = time_point<steady_clock>;
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using system_point = time_point<system_clock>;
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microtime_t microtime();
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string_view microtime(const mutable_buffer &);
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std::ostream &operator<<(std::ostream &, const microtime_t &);
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template<class unit = seconds> unit now();
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template<> steady_point now();
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template<> system_point now();
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template<class unit = seconds> time_t &time(time_t &ref);
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template<class unit = seconds> time_t time();
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template<class unit = seconds> time_t time(time_t *const &ptr);
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const char *const rfc7231_fmt
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{
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"%a, %d %b %Y %T %z"
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};
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IRCD_OVERLOAD(localtime)
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string_view timef(const mutable_buffer &out, const struct tm &tm, const char *const &fmt = rfc7231_fmt);
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string_view timef(const mutable_buffer &out, const time_t &epoch, const char *const &fmt = rfc7231_fmt);
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string_view timef(const mutable_buffer &out, const time_t &epoch, localtime_t, const char *const &fmt = rfc7231_fmt);
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string_view timef(const mutable_buffer &out, localtime_t, const char *const &fmt = rfc7231_fmt);
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string_view timef(const mutable_buffer &out, const char *const &fmt = rfc7231_fmt);
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template<class... args> std::string timestr(args&&...);
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}
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template<class... args>
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std::string
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ircd::timestr(args&&... a)
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{
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std::string ret(128, char{});
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const mutable_buffer buf
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{
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const_cast<char *>(ret.data()), ret.size()
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};
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ret.resize(timef(buf, std::forward<args>(a)...).size());
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return ret;
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}
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inline ircd::string_view
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ircd::timef(const mutable_buffer &out,
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const char *const &fmt)
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{
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const auto epoch{time()};
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return timef(out, epoch, fmt);
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}
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inline ircd::string_view
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ircd::timef(const mutable_buffer &out,
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localtime_t,
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const char *const &fmt)
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{
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const auto epoch{time()};
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return timef(out, epoch, localtime, fmt);
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}
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inline ircd::string_view
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ircd::timef(const mutable_buffer &out,
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const time_t &epoch,
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localtime_t,
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const char *const &fmt)
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{
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struct tm tm;
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localtime_r(&epoch, &tm);
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return timef(out, tm, fmt);
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}
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inline ircd::string_view
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ircd::timef(const mutable_buffer &out,
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const time_t &epoch,
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const char *const &fmt)
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{
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struct tm tm;
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gmtime_r(&epoch, &tm);
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return timef(out, tm, fmt);
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}
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inline ircd::string_view
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ircd::timef(const mutable_buffer &out,
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const struct tm &tm,
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const char *const &fmt)
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{
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const auto len
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{
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strftime(data(out), size(out), fmt, &tm)
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};
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return { data(out), len };
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}
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template<class unit>
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time_t
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ircd::time(time_t *const &ptr)
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{
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time_t buf, &ret{ptr? *ptr : buf};
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return time<unit>(ret);
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}
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template<class unit>
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time_t
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ircd::time()
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{
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time_t ret;
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return time<unit>(ret);
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}
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template<class unit>
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time_t &
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ircd::time(time_t &ref)
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{
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ref = duration_cast<unit>(system_clock::now().time_since_epoch()).count();
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return ref;
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}
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template<> inline
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ircd::steady_point
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ircd::now()
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{
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return steady_clock::now();
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}
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template<> inline
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ircd::system_point
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ircd::now()
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{
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return system_clock::now();
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}
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template<class unit>
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unit
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ircd::now()
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{
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const auto now
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{
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steady_clock::now()
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};
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const auto tse
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{
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now.time_since_epoch()
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};
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return std::chrono::duration_cast<unit>(tse);
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}
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inline std::ostream &
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ircd::operator<<(std::ostream &s, const microtime_t &t)
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{
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char buf[64];
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s << microtime(buf);
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return s;
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}
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inline ircd::string_view
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ircd::microtime(const mutable_buffer &buf)
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{
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const auto mt{microtime()};
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const auto length
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{
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snprintf(data(buf), size(buf), "%zd.%06d", mt.first, mt.second)
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};
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return string_view
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{
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data(buf), size_t(length)
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};
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}
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inline ircd::microtime_t
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ircd::microtime()
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{
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struct timeval tv;
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syscall(::gettimeofday, &tv, nullptr);
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return { tv.tv_sec, tv.tv_usec };
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}
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