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// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
// SPDX-License-Identifier: GPL-3.0-or-later
// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
// SPDX-License-Identifier: GPL-2.0-or-later
#pragma once
#include <atomic>
#include <boost/container/small_vector.hpp>
#include "common/common_types.h"
#include "core/hardware_properties.h"
#include "core/hle/kernel/k_priority_queue.h"
#include "core/hle/kernel/k_scheduler_lock.h"
#include "core/hle/kernel/k_thread.h"
#include "core/hle/kernel/svc_types.h"
namespace Kernel {
class KernelCore;
class SchedulerLock;
using KSchedulerPriorityQueue =
KPriorityQueue<KThread, Core::Hardware::NUM_CPU_CORES, Svc::LowestThreadPriority,
Svc::HighestThreadPriority>;
static constexpr s32 HighestCoreMigrationAllowedPriority = 2;
static_assert(Svc::LowestThreadPriority >= HighestCoreMigrationAllowedPriority);
static_assert(Svc::HighestThreadPriority <= HighestCoreMigrationAllowedPriority);
class GlobalSchedulerContext final {
friend class KScheduler;
public:
static constexpr size_t MAX_THREADS = 256;
using LockType = KAbstractSchedulerLock<KScheduler>;
using ThreadList = boost::container::small_vector<KThread*, MAX_THREADS>;
explicit GlobalSchedulerContext(KernelCore& kernel);
~GlobalSchedulerContext();
/// @brief Returns a list of all threads managed by the scheduler
/// This is only safe to iterate while holding the scheduler lock
ThreadList const& GetThreadList() const noexcept {
return m_thread_list;
}
LockType& SchedulerLock() noexcept {
return m_scheduler_lock;
}
void AddThread(KThread* thread) noexcept;
void RemoveThread(KThread* thread) noexcept;
void PreemptThreads(KernelCore& kernel) noexcept;
bool IsLocked() const noexcept;
void UnregisterDummyThreadForWakeup(KThread* thread) noexcept;
void RegisterDummyThreadForWakeup(KThread* thread) noexcept;
void WakeupWaitingDummyThreads(KernelCore& kernel) noexcept;
private:
friend class KScopedSchedulerLock;
friend class KScopedSchedulerLockAndSleep;
std::atomic_bool m_scheduler_update_needed{};
KSchedulerPriorityQueue m_priority_queue;
LockType m_scheduler_lock;
std::mutex m_global_list_guard;
/// Lists dummy threads pending wakeup on lock release
ThreadList m_woken_dummy_threads;
/// Lists all thread ids that aren't deleted/etc.
ThreadList m_thread_list;
};
} // namespace Kernel
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