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// SPDX-FileCopyrightText: Copyright 2021 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include "common/assert.h"
#include "common/common_types.h"
#include "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/result.h"
namespace Core {
class System;
}
namespace Kernel {
class KConditionVariable {
public:
using ThreadTree = typename KThread::ConditionVariableThreadTreeType;
explicit KConditionVariable(Core::System& system_);
~KConditionVariable();
// Arbitration
[[nodiscard]] Result SignalToAddress(VAddr addr);
[[nodiscard]] Result WaitForAddress(Handle handle, VAddr addr, u32 value);
// Condition variable
void Signal(u64 cv_key, s32 count);
[[nodiscard]] Result Wait(VAddr addr, u64 key, u32 value, s64 timeout);
private:
void SignalImpl(KThread* thread);
ThreadTree thread_tree;
Core::System& system;
KernelCore& kernel;
};
inline void BeforeUpdatePriority(const KernelCore& kernel, KConditionVariable::ThreadTree* tree,
KThread* thread) {
ASSERT(kernel.GlobalSchedulerContext().IsLocked());
tree->erase(tree->iterator_to(*thread));
}
inline void AfterUpdatePriority(const KernelCore& kernel, KConditionVariable::ThreadTree* tree,
KThread* thread) {
ASSERT(kernel.GlobalSchedulerContext().IsLocked());
tree->insert(*thread);
}
} // namespace Kernel
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