mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-11 09:18:05 +03:00
1219c65249
The coarse clocks in time.h are a linux extension that we've adopted. MacOS and the BSDs don't have it, so we need an alias in a platform header for Lagom builds.
207 lines
6.5 KiB
C++
207 lines
6.5 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Platform.h>
|
|
|
|
namespace AK {
|
|
|
|
// Month and day start at 1. Month must be >= 1 and <= 12.
|
|
// The return value is 0-indexed, that is 0 is Sunday, 1 is Monday, etc.
|
|
// Day may be negative or larger than the number of days
|
|
// in the given month.
|
|
unsigned day_of_week(int year, unsigned month, int day);
|
|
|
|
// Month and day start at 1. Month must be >= 1 and <= 12.
|
|
// The return value is 0-indexed, that is Jan 1 is day 0.
|
|
// Day may be negative or larger than the number of days
|
|
// in the given month. If day is negative enough, the result
|
|
// can be negative.
|
|
int day_of_year(int year, unsigned month, int day);
|
|
|
|
// Month starts at 1. Month must be >= 1 and <= 12.
|
|
int days_in_month(int year, unsigned month);
|
|
|
|
inline bool is_leap_year(int year)
|
|
{
|
|
return year % 4 == 0 && (year % 100 != 0 || year % 400 == 0);
|
|
}
|
|
|
|
inline unsigned days_in_year(int year)
|
|
{
|
|
return 365 + is_leap_year(year);
|
|
}
|
|
|
|
inline int years_to_days_since_epoch(int year)
|
|
{
|
|
int days = 0;
|
|
for (int current_year = 1970; current_year < year; ++current_year)
|
|
days += days_in_year(current_year);
|
|
for (int current_year = year; current_year < 1970; ++current_year)
|
|
days -= days_in_year(current_year);
|
|
return days;
|
|
}
|
|
|
|
template<typename TimevalType>
|
|
inline void timeval_sub(const TimevalType& a, const TimevalType& b, TimevalType& result)
|
|
{
|
|
result.tv_sec = a.tv_sec - b.tv_sec;
|
|
result.tv_usec = a.tv_usec - b.tv_usec;
|
|
if (result.tv_usec < 0) {
|
|
--result.tv_sec;
|
|
result.tv_usec += 1'000'000;
|
|
}
|
|
}
|
|
|
|
template<typename TimevalType>
|
|
inline void timeval_add(const TimevalType& a, const TimevalType& b, TimevalType& result)
|
|
{
|
|
result.tv_sec = a.tv_sec + b.tv_sec;
|
|
result.tv_usec = a.tv_usec + b.tv_usec;
|
|
if (result.tv_usec >= 1'000'000) {
|
|
++result.tv_sec;
|
|
result.tv_usec -= 1'000'000;
|
|
}
|
|
}
|
|
|
|
template<typename TimespecType>
|
|
inline void timespec_sub(const TimespecType& a, const TimespecType& b, TimespecType& result)
|
|
{
|
|
result.tv_sec = a.tv_sec - b.tv_sec;
|
|
result.tv_nsec = a.tv_nsec - b.tv_nsec;
|
|
if (result.tv_nsec < 0) {
|
|
--result.tv_sec;
|
|
result.tv_nsec += 1'000'000'000;
|
|
}
|
|
}
|
|
|
|
template<typename TimespecType, typename TimevalType>
|
|
inline void timespec_sub_timeval(const TimespecType& a, const TimevalType& b, TimespecType& result)
|
|
{
|
|
result.tv_sec = a.tv_sec - b.tv_sec;
|
|
result.tv_nsec = a.tv_nsec - b.tv_usec * 1000;
|
|
if (result.tv_nsec < 0) {
|
|
--result.tv_sec;
|
|
result.tv_nsec += 1'000'000'000;
|
|
}
|
|
}
|
|
|
|
template<typename TimespecType>
|
|
inline void timespec_add(const TimespecType& a, const TimespecType& b, TimespecType& result)
|
|
{
|
|
result.tv_sec = a.tv_sec + b.tv_sec;
|
|
result.tv_nsec = a.tv_nsec + b.tv_nsec;
|
|
if (result.tv_nsec >= 1000'000'000) {
|
|
++result.tv_sec;
|
|
result.tv_nsec -= 1000'000'000;
|
|
}
|
|
}
|
|
|
|
template<typename TimespecType, typename TimevalType>
|
|
inline void timespec_add_timeval(const TimespecType& a, const TimevalType& b, TimespecType& result)
|
|
{
|
|
result.tv_sec = a.tv_sec + b.tv_sec;
|
|
result.tv_nsec = a.tv_nsec + b.tv_usec * 1000;
|
|
if (result.tv_nsec >= 1000'000'000) {
|
|
++result.tv_sec;
|
|
result.tv_nsec -= 1000'000'000;
|
|
}
|
|
}
|
|
|
|
template<typename TimevalType, typename TimespecType>
|
|
inline void timeval_to_timespec(const TimevalType& tv, TimespecType& ts)
|
|
{
|
|
ts.tv_sec = tv.tv_sec;
|
|
ts.tv_nsec = tv.tv_usec * 1000;
|
|
}
|
|
|
|
template<typename TimespecType, typename TimevalType>
|
|
inline void timespec_to_timeval(const TimespecType& ts, TimevalType& tv)
|
|
{
|
|
tv.tv_sec = ts.tv_sec;
|
|
tv.tv_usec = ts.tv_nsec / 1000;
|
|
}
|
|
|
|
template<typename TimespecType>
|
|
inline bool operator>=(const TimespecType& a, const TimespecType& b)
|
|
{
|
|
return a.tv_sec > b.tv_sec || (a.tv_sec == b.tv_sec && a.tv_nsec >= b.tv_nsec);
|
|
}
|
|
|
|
template<typename TimespecType>
|
|
inline bool operator>(const TimespecType& a, const TimespecType& b)
|
|
{
|
|
return a.tv_sec > b.tv_sec || (a.tv_sec == b.tv_sec && a.tv_nsec > b.tv_nsec);
|
|
}
|
|
|
|
template<typename TimespecType>
|
|
inline bool operator<(const TimespecType& a, const TimespecType& b)
|
|
{
|
|
return a.tv_sec < b.tv_sec || (a.tv_sec == b.tv_sec && a.tv_nsec < b.tv_nsec);
|
|
}
|
|
|
|
template<typename TimespecType>
|
|
inline bool operator<=(const TimespecType& a, const TimespecType& b)
|
|
{
|
|
return a.tv_sec < b.tv_sec || (a.tv_sec == b.tv_sec && a.tv_nsec <= b.tv_nsec);
|
|
}
|
|
|
|
template<typename TimespecType>
|
|
inline bool operator==(const TimespecType& a, const TimespecType& b)
|
|
{
|
|
return a.tv_sec == b.tv_sec && a.tv_nsec == b.tv_nsec;
|
|
}
|
|
|
|
template<typename TimespecType>
|
|
inline bool operator!=(const TimespecType& a, const TimespecType& b)
|
|
{
|
|
return a.tv_sec != b.tv_sec || a.tv_nsec != b.tv_nsec;
|
|
}
|
|
|
|
}
|
|
|
|
using AK::day_of_week;
|
|
using AK::day_of_year;
|
|
using AK::days_in_month;
|
|
using AK::days_in_year;
|
|
using AK::is_leap_year;
|
|
using AK::timespec_add;
|
|
using AK::timespec_add_timeval;
|
|
using AK::timespec_sub;
|
|
using AK::timespec_sub_timeval;
|
|
using AK::timespec_to_timeval;
|
|
using AK::timeval_add;
|
|
using AK::timeval_sub;
|
|
using AK::timeval_to_timespec;
|
|
using AK::years_to_days_since_epoch;
|
|
using AK::operator<=;
|
|
using AK::operator<;
|
|
using AK::operator>;
|
|
using AK::operator>=;
|
|
using AK::operator==;
|
|
using AK::operator!=;
|