mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-12-25 11:46:05 +00:00
72 lines
3.1 KiB
C++
72 lines
3.1 KiB
C++
/*
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
#include <vapours/svc/svc_common.hpp>
|
|
#include <vapours/svc/svc_select_hardware_constants.hpp>
|
|
|
|
namespace ams::svc {
|
|
|
|
class Tick {
|
|
public:
|
|
static constexpr s64 TicksPerSecond = ::ams::svc::TicksPerSecond;
|
|
static constexpr s64 GetTicksPerSecond() { return TicksPerSecond; }
|
|
private:
|
|
s64 tick;
|
|
private:
|
|
static constexpr s64 NanoSecondsPerSecond = INT64_C(1'000'000'000);
|
|
|
|
static constexpr void DivNs(s64 &out, const s64 value) {
|
|
out = value / NanoSecondsPerSecond;
|
|
}
|
|
|
|
static constexpr void DivModNs(s64 &out_div, s64 &out_mod, const s64 value) {
|
|
out_div = value / NanoSecondsPerSecond;
|
|
out_mod = value % NanoSecondsPerSecond;
|
|
}
|
|
|
|
static constexpr s64 ConvertTimeSpanToTickImpl(TimeSpan ts) {
|
|
/* Split up timespan and ticks-per-second by ns. */
|
|
s64 ts_div = 0, ts_mod = 0;
|
|
s64 tick_div = 0, tick_mod = 0;
|
|
DivModNs(ts_div, ts_mod, ts.GetNanoSeconds());
|
|
DivModNs(tick_div, tick_mod, TicksPerSecond);
|
|
|
|
/* Convert the timespan into a tick count. */
|
|
s64 value = 0;
|
|
DivNs(value, ts_mod * tick_mod + NanoSecondsPerSecond - 1);
|
|
|
|
return (ts_div * tick_div) * NanoSecondsPerSecond + ts_div * tick_mod + ts_mod * tick_div + value;
|
|
}
|
|
public:
|
|
constexpr explicit Tick(s64 t = 0) : tick(t) { /* ... */ }
|
|
constexpr Tick(TimeSpan ts) : tick(ConvertTimeSpanToTickImpl(ts)) { /* ... */ }
|
|
|
|
constexpr operator s64() const { return this->tick; }
|
|
|
|
/* Tick arithmetic. */
|
|
constexpr Tick &operator+=(Tick rhs) { this->tick += rhs.tick; return *this; }
|
|
constexpr Tick &operator-=(Tick rhs) { this->tick -= rhs.tick; return *this; }
|
|
constexpr Tick operator+(Tick rhs) const { Tick r(*this); return r += rhs; }
|
|
constexpr Tick operator-(Tick rhs) const { Tick r(*this); return r -= rhs; }
|
|
|
|
constexpr Tick &operator+=(TimeSpan rhs) { this->tick += Tick(rhs).tick; return *this; }
|
|
constexpr Tick &operator-=(TimeSpan rhs) { this->tick -= Tick(rhs).tick; return *this; }
|
|
constexpr Tick operator+(TimeSpan rhs) const { Tick r(*this); return r += rhs; }
|
|
constexpr Tick operator-(TimeSpan rhs) const { Tick r(*this); return r -= rhs; }
|
|
};
|
|
|
|
}
|