58 lines
1.5 KiB
C++
58 lines
1.5 KiB
C++
// Copyright 2020 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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// This file references various implementation details from Atmosphere, an open-source firmware for
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// the Nintendo Switch. Copyright 2018-2020 Atmosphere-NX.
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#pragma once
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "core/hardware_properties.h"
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namespace Kernel {
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class KAffinityMask {
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public:
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constexpr KAffinityMask() = default;
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[[nodiscard]] constexpr u64 GetAffinityMask() const {
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return this->mask;
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}
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constexpr void SetAffinityMask(u64 new_mask) {
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ASSERT((new_mask & ~AllowedAffinityMask) == 0);
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this->mask = new_mask;
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}
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[[nodiscard]] constexpr bool GetAffinity(s32 core) const {
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return this->mask & GetCoreBit(core);
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}
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constexpr void SetAffinity(s32 core, bool set) {
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ASSERT(0 <= core && core < static_cast<s32>(Core::Hardware::NUM_CPU_CORES));
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if (set) {
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this->mask |= GetCoreBit(core);
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} else {
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this->mask &= ~GetCoreBit(core);
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}
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}
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constexpr void SetAll() {
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this->mask = AllowedAffinityMask;
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}
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private:
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[[nodiscard]] static constexpr u64 GetCoreBit(s32 core) {
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ASSERT(0 <= core && core < static_cast<s32>(Core::Hardware::NUM_CPU_CORES));
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return (1ULL << core);
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}
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static constexpr u64 AllowedAffinityMask = (1ULL << Core::Hardware::NUM_CPU_CORES) - 1;
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u64 mask{};
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};
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} // namespace Kernel
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