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https://github.com/Atmosphere-NX/Atmosphere.git
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61 lines
2.7 KiB
C++
61 lines
2.7 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_k_condition_variable.hpp>
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namespace ams::kern {
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class KAddressArbiter {
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public:
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using ThreadTree = KConditionVariable::ThreadTree;
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private:
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ThreadTree tree;
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public:
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constexpr KAddressArbiter() : tree() { /* ... */ }
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Result SignalToAddress(uintptr_t addr, ams::svc::SignalType type, s32 value, s32 count) {
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switch (type) {
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case ams::svc::SignalType_Signal:
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return this->Signal(addr, count);
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case ams::svc::SignalType_SignalAndIncrementIfEqual:
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return this->SignalAndIncrementIfEqual(addr, value, count);
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case ams::svc::SignalType_SignalAndModifyByWaitingCountIfEqual:
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return this->SignalAndModifyByWaitingCountIfEqual(addr, value, count);
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MESOSPHERE_UNREACHABLE_DEFAULT_CASE();
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}
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}
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Result WaitForAddress(uintptr_t addr, ams::svc::ArbitrationType type, s32 value, s64 timeout) {
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switch (type) {
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case ams::svc::ArbitrationType_WaitIfLessThan:
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return this->WaitIfLessThan(addr, value, false, timeout);
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case ams::svc::ArbitrationType_DecrementAndWaitIfLessThan:
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return this->WaitIfLessThan(addr, value, true, timeout);
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case ams::svc::ArbitrationType_WaitIfEqual:
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return this->WaitIfEqual(addr, value, timeout);
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MESOSPHERE_UNREACHABLE_DEFAULT_CASE();
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}
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}
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private:
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Result Signal(uintptr_t addr, s32 count);
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Result SignalAndIncrementIfEqual(uintptr_t addr, s32 value, s32 count);
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Result SignalAndModifyByWaitingCountIfEqual(uintptr_t addr, s32 value, s32 count);
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Result WaitIfLessThan(uintptr_t addr, s32 value, bool decrement, s64 timeout);
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Result WaitIfEqual(uintptr_t addr, s32 value, s64 timeout);
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};
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}
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