mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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61 lines
2.1 KiB
C++
61 lines
2.1 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <mesosphere/kern_common.hpp>
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#include <mesosphere/kern_select_cpu.hpp>
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namespace ams::kern {
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class KAffinityMask {
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private:
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static constexpr u64 AllowedAffinityMask = (1ul << cpu::NumCores) - 1;
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private:
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u64 m_mask;
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private:
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static constexpr ALWAYS_INLINE u64 GetCoreBit(s32 core) {
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MESOSPHERE_ASSERT(0 <= core && core < static_cast<s32>(cpu::NumCores));
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return (1ul << core);
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}
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public:
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constexpr ALWAYS_INLINE KAffinityMask() : m_mask(0) { MESOSPHERE_ASSERT_THIS(); }
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constexpr ALWAYS_INLINE u64 GetAffinityMask() const { return m_mask; }
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constexpr ALWAYS_INLINE void SetAffinityMask(u64 new_mask) {
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MESOSPHERE_ASSERT((new_mask & ~AllowedAffinityMask) == 0);
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m_mask = new_mask;
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}
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constexpr ALWAYS_INLINE bool GetAffinity(s32 core) const {
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return m_mask & GetCoreBit(core);
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}
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constexpr ALWAYS_INLINE void SetAffinity(s32 core, bool set) {
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MESOSPHERE_ASSERT(0 <= core && core < static_cast<s32>(cpu::NumCores));
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if (set) {
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m_mask |= GetCoreBit(core);
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} else {
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m_mask &= ~GetCoreBit(core);
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}
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}
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constexpr ALWAYS_INLINE void SetAll() {
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m_mask = AllowedAffinityMask;
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}
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};
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}
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