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1d42c4f6de
Per XLS-0095, we are taking steps to rename ripple(d) to xrpl(d). This change specifically removes all copyright notices referencing Ripple, XRPLF, and certain affiliated contributors upon mutual agreement, so the notice in the LICENSE.md file applies throughout. Copyright notices referencing external contributions remain as-is. Duplicate verbiage is also removed.
110 lines
2.6 KiB
C++
110 lines
2.6 KiB
C++
#ifndef XRPL_BASICS_CHRONO_H_INCLUDED
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#define XRPL_BASICS_CHRONO_H_INCLUDED
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#include <xrpl/beast/clock/abstract_clock.h>
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#include <xrpl/beast/clock/basic_seconds_clock.h>
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#include <xrpl/beast/clock/manual_clock.h>
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#include <date/date.h>
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#include <chrono>
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#include <cstdint>
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#include <ratio>
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#include <string>
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namespace ripple {
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// A few handy aliases
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using days = std::chrono::duration<
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int,
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std::ratio_multiply<std::chrono::hours::period, std::ratio<24>>>;
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using weeks = std::chrono::
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duration<int, std::ratio_multiply<days::period, std::ratio<7>>>;
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/** Clock for measuring the network time.
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The epoch is January 1, 2000
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epoch_offset
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= date(2000-01-01) - date(1970-0-01)
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= days(10957)
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= seconds(946684800)
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*/
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constexpr static std::chrono::seconds epoch_offset =
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date::sys_days{date::year{2000} / 1 / 1} -
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date::sys_days{date::year{1970} / 1 / 1};
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static_assert(epoch_offset.count() == 946684800);
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class NetClock
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{
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public:
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explicit NetClock() = default;
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using rep = std::uint32_t;
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using period = std::ratio<1>;
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using duration = std::chrono::duration<rep, period>;
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using time_point = std::chrono::time_point<NetClock>;
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static bool const is_steady = false;
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};
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template <class Duration>
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std::string
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to_string(date::sys_time<Duration> tp)
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{
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return date::format("%Y-%b-%d %T %Z", tp);
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}
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inline std::string
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to_string(NetClock::time_point tp)
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{
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// 2000-01-01 00:00:00 UTC is 946684800s from 1970-01-01 00:00:00 UTC
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using namespace std::chrono;
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return to_string(
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system_clock::time_point{tp.time_since_epoch() + epoch_offset});
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}
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template <class Duration>
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std::string
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to_string_iso(date::sys_time<Duration> tp)
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{
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using namespace std::chrono;
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return date::format("%FT%TZ", tp);
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}
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inline std::string
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to_string_iso(NetClock::time_point tp)
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{
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// 2000-01-01 00:00:00 UTC is 946684800s from 1970-01-01 00:00:00 UTC
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// Note, NetClock::duration is seconds, as checked by static_assert
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static_assert(std::is_same_v<NetClock::duration::period, std::ratio<1>>);
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return to_string_iso(date::sys_time<NetClock::duration>{
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tp.time_since_epoch() + epoch_offset});
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}
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/** A clock for measuring elapsed time.
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The epoch is unspecified.
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*/
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using Stopwatch = beast::abstract_clock<std::chrono::steady_clock>;
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/** A manual Stopwatch for unit tests. */
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using TestStopwatch = beast::manual_clock<std::chrono::steady_clock>;
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/** Returns an instance of a wall clock. */
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inline Stopwatch&
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stopwatch()
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{
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using Clock = beast::basic_seconds_clock;
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using Facade = Clock::Clock;
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return beast::get_abstract_clock<Facade, Clock>();
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}
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} // namespace ripple
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#endif
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