mirror of
https://github.com/Atmosphere-NX/Atmosphere
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55 lines
1.9 KiB
C++
55 lines
1.9 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_thread.hpp>
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#include <mesosphere/kern_k_scheduler.hpp>
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namespace ams::kern {
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class KConditionVariable {
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public:
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using ThreadTree = typename KThread::ConditionVariableThreadTreeType;
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private:
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ThreadTree m_tree;
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public:
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constexpr KConditionVariable() : m_tree() { /* ... */ }
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/* Arbitration. */
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Result SignalToAddress(KProcessAddress addr);
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Result WaitForAddress(ams::svc::Handle handle, KProcessAddress addr, u32 value);
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/* Condition variable. */
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void Signal(uintptr_t cv_key, s32 count);
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Result Wait(KProcessAddress addr, uintptr_t key, u32 value, s64 timeout);
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private:
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KThread *SignalImpl(KThread *thread);
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};
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ALWAYS_INLINE void BeforeUpdatePriority(KConditionVariable::ThreadTree *tree, KThread *thread) {
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MESOSPHERE_ASSERT(KScheduler::IsSchedulerLockedByCurrentThread());
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tree->erase(tree->iterator_to(*thread));
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}
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ALWAYS_INLINE void AfterUpdatePriority(KConditionVariable::ThreadTree *tree, KThread *thread) {
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MESOSPHERE_ASSERT(KScheduler::IsSchedulerLockedByCurrentThread());
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tree->insert(*thread);
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}
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}
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