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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 "core/hle/kernel/k_scheduler.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/k_typed_address.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.
static Result SignalToAddress(KernelCore& kernel, KProcessAddress addr);
static Result WaitForAddress(KernelCore& kernel, Handle handle, KProcessAddress addr,
u32 value);
// Condition variable.
void Signal(u64 cv_key, s32 count);
Result Wait(KProcessAddress addr, u64 key, u32 value, s64 timeout);
private:
void SignalImpl(KThread* thread);
private:
Core::System& m_system;
KernelCore& m_kernel;
ThreadTree m_tree{};
};
inline void BeforeUpdatePriority(KernelCore& kernel, KConditionVariable::ThreadTree* tree,
KThread* thread) {
ASSERT(KScheduler::IsSchedulerLockedByCurrentThread(kernel));
tree->erase(tree->iterator_to(*thread));
}
inline void AfterUpdatePriority(KernelCore& kernel, KConditionVariable::ThreadTree* tree,
KThread* thread) {
ASSERT(KScheduler::IsSchedulerLockedByCurrentThread(kernel));
tree->insert(*thread);
}
} // namespace Kernel
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