mirror of
https://gitlab.com/suyu-emu/suyu.git
synced 2024-03-15 23:15:44 +00:00
03884b7ea6
- This makes our implementations of these more closely match HOS.
812 lines
22 KiB
C++
812 lines
22 KiB
C++
// Copyright 2021 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <array>
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#include <span>
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#include <string>
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#include <utility>
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#include <vector>
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#include <boost/intrusive/list.hpp>
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#include "common/common_types.h"
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#include "common/intrusive_red_black_tree.h"
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#include "core/arm/arm_interface.h"
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#include "core/hle/kernel/k_affinity_mask.h"
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#include "core/hle/kernel/k_light_lock.h"
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#include "core/hle/kernel/k_spin_lock.h"
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#include "core/hle/kernel/k_synchronization_object.h"
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#include "core/hle/kernel/slab_helpers.h"
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#include "core/hle/kernel/svc_common.h"
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#include "core/hle/kernel/svc_types.h"
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#include "core/hle/result.h"
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namespace Common {
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class Fiber;
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}
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namespace Core {
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class ARM_Interface;
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class System;
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} // namespace Core
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namespace Kernel {
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class GlobalSchedulerContext;
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class KernelCore;
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class KProcess;
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class KScheduler;
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class KThreadQueue;
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using KThreadFunction = VAddr;
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enum class ThreadType : u32 {
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Main = 0,
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Kernel = 1,
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HighPriority = 2,
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User = 3,
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Dummy = 100, // Special thread type for emulation purposes only
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};
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DECLARE_ENUM_FLAG_OPERATORS(ThreadType);
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enum class SuspendType : u32 {
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Process = 0,
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Thread = 1,
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Debug = 2,
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Backtrace = 3,
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Init = 4,
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Count,
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};
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enum class ThreadState : u16 {
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Initialized = 0,
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Waiting = 1,
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Runnable = 2,
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Terminated = 3,
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SuspendShift = 4,
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Mask = (1 << SuspendShift) - 1,
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ProcessSuspended = (1 << (0 + SuspendShift)),
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ThreadSuspended = (1 << (1 + SuspendShift)),
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DebugSuspended = (1 << (2 + SuspendShift)),
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BacktraceSuspended = (1 << (3 + SuspendShift)),
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InitSuspended = (1 << (4 + SuspendShift)),
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SuspendFlagMask = ((1 << 5) - 1) << SuspendShift,
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};
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DECLARE_ENUM_FLAG_OPERATORS(ThreadState);
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enum class DpcFlag : u32 {
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Terminating = (1 << 0),
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Terminated = (1 << 1),
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};
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enum class ThreadWaitReasonForDebugging : u32 {
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None, ///< Thread is not waiting
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Sleep, ///< Thread is waiting due to a SleepThread SVC
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IPC, ///< Thread is waiting for the reply from an IPC request
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Synchronization, ///< Thread is waiting due to a WaitSynchronization SVC
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ConditionVar, ///< Thread is waiting due to a WaitProcessWideKey SVC
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Arbitration, ///< Thread is waiting due to a SignalToAddress/WaitForAddress SVC
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Suspended, ///< Thread is waiting due to process suspension
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};
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[[nodiscard]] KThread* GetCurrentThreadPointer(KernelCore& kernel);
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[[nodiscard]] KThread& GetCurrentThread(KernelCore& kernel);
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[[nodiscard]] s32 GetCurrentCoreId(KernelCore& kernel);
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class KThread final : public KAutoObjectWithSlabHeapAndContainer<KThread, KSynchronizationObject>,
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public boost::intrusive::list_base_hook<> {
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KERNEL_AUTOOBJECT_TRAITS(KThread, KSynchronizationObject);
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private:
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friend class KScheduler;
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friend class KProcess;
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public:
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static constexpr s32 DefaultThreadPriority = 44;
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static constexpr s32 IdleThreadPriority = Svc::LowestThreadPriority + 1;
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explicit KThread(KernelCore& kernel_);
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~KThread() override;
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public:
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using ThreadContext32 = Core::ARM_Interface::ThreadContext32;
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using ThreadContext64 = Core::ARM_Interface::ThreadContext64;
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using WaiterList = boost::intrusive::list<KThread>;
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void SetName(std::string new_name) {
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name = std::move(new_name);
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}
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/**
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* Gets the thread's current priority
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* @return The current thread's priority
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*/
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[[nodiscard]] s32 GetPriority() const {
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return priority;
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}
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/**
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* Sets the thread's current priority.
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* @param priority The new priority.
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*/
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void SetPriority(s32 value) {
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priority = value;
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}
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/**
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* Gets the thread's nominal priority.
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* @return The current thread's nominal priority.
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*/
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[[nodiscard]] s32 GetBasePriority() const {
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return base_priority;
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}
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/**
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* Gets the thread's thread ID
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* @return The thread's ID
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*/
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[[nodiscard]] u64 GetThreadID() const {
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return thread_id;
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}
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void ContinueIfHasKernelWaiters() {
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if (GetNumKernelWaiters() > 0) {
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Continue();
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}
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}
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void SetBasePriority(s32 value);
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[[nodiscard]] ResultCode Run();
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void Exit();
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[[nodiscard]] u32 GetSuspendFlags() const {
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return suspend_allowed_flags & suspend_request_flags;
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}
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[[nodiscard]] bool IsSuspended() const {
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return GetSuspendFlags() != 0;
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}
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[[nodiscard]] bool IsSuspendRequested(SuspendType type) const {
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return (suspend_request_flags &
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(1u << (static_cast<u32>(ThreadState::SuspendShift) + static_cast<u32>(type)))) !=
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0;
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}
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[[nodiscard]] bool IsSuspendRequested() const {
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return suspend_request_flags != 0;
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}
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void RequestSuspend(SuspendType type);
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void Resume(SuspendType type);
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void TrySuspend();
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void UpdateState();
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void Continue();
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constexpr void SetSyncedIndex(s32 index) {
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synced_index = index;
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}
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[[nodiscard]] constexpr s32 GetSyncedIndex() const {
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return synced_index;
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}
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constexpr void SetWaitResult(ResultCode wait_res) {
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wait_result = wait_res;
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}
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[[nodiscard]] constexpr ResultCode GetWaitResult() const {
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return wait_result;
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}
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/*
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* Returns the Thread Local Storage address of the current thread
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* @returns VAddr of the thread's TLS
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*/
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[[nodiscard]] VAddr GetTLSAddress() const {
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return tls_address;
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}
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/*
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* Returns the value of the TPIDR_EL0 Read/Write system register for this thread.
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* @returns The value of the TPIDR_EL0 register.
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*/
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[[nodiscard]] u64 GetTPIDR_EL0() const {
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return thread_context_64.tpidr;
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}
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/// Sets the value of the TPIDR_EL0 Read/Write system register for this thread.
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void SetTPIDR_EL0(u64 value) {
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thread_context_64.tpidr = value;
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thread_context_32.tpidr = static_cast<u32>(value);
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}
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[[nodiscard]] ThreadContext32& GetContext32() {
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return thread_context_32;
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}
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[[nodiscard]] const ThreadContext32& GetContext32() const {
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return thread_context_32;
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}
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[[nodiscard]] ThreadContext64& GetContext64() {
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return thread_context_64;
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}
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[[nodiscard]] const ThreadContext64& GetContext64() const {
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return thread_context_64;
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}
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[[nodiscard]] std::shared_ptr<Common::Fiber>& GetHostContext();
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[[nodiscard]] ThreadState GetState() const {
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return thread_state & ThreadState::Mask;
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}
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[[nodiscard]] ThreadState GetRawState() const {
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return thread_state;
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}
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void SetState(ThreadState state);
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[[nodiscard]] s64 GetLastScheduledTick() const {
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return last_scheduled_tick;
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}
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void SetLastScheduledTick(s64 tick) {
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last_scheduled_tick = tick;
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}
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void AddCpuTime([[maybe_unused]] s32 core_id_, s64 amount) {
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cpu_time += amount;
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// TODO(bunnei): Debug kernels track per-core tick counts. Should we?
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}
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[[nodiscard]] s64 GetCpuTime() const {
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return cpu_time;
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}
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[[nodiscard]] s32 GetActiveCore() const {
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return core_id;
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}
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void SetActiveCore(s32 core) {
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core_id = core;
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}
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[[nodiscard]] s32 GetCurrentCore() const {
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return current_core_id;
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}
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void SetCurrentCore(s32 core) {
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current_core_id = core;
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}
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[[nodiscard]] KProcess* GetOwnerProcess() {
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return parent;
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}
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[[nodiscard]] const KProcess* GetOwnerProcess() const {
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return parent;
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}
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[[nodiscard]] bool IsUserThread() const {
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return parent != nullptr;
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}
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u16 GetUserDisableCount() const;
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void SetInterruptFlag();
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void ClearInterruptFlag();
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[[nodiscard]] KThread* GetLockOwner() const {
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return lock_owner;
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}
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void SetLockOwner(KThread* owner) {
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lock_owner = owner;
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}
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[[nodiscard]] const KAffinityMask& GetAffinityMask() const {
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return physical_affinity_mask;
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}
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[[nodiscard]] ResultCode GetCoreMask(s32* out_ideal_core, u64* out_affinity_mask);
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[[nodiscard]] ResultCode GetPhysicalCoreMask(s32* out_ideal_core, u64* out_affinity_mask);
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[[nodiscard]] ResultCode SetCoreMask(s32 cpu_core_id, u64 v_affinity_mask);
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[[nodiscard]] ResultCode SetActivity(Svc::ThreadActivity activity);
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[[nodiscard]] ResultCode Sleep(s64 timeout);
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[[nodiscard]] s64 GetYieldScheduleCount() const {
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return schedule_count;
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}
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void SetYieldScheduleCount(s64 count) {
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schedule_count = count;
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}
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void WaitCancel();
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[[nodiscard]] bool IsWaitCancelled() const {
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return wait_cancelled;
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}
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void ClearWaitCancelled() {
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wait_cancelled = false;
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}
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[[nodiscard]] bool IsCancellable() const {
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return cancellable;
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}
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void SetCancellable() {
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cancellable = true;
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}
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void ClearCancellable() {
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cancellable = false;
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}
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[[nodiscard]] bool IsTerminationRequested() const {
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return termination_requested || GetRawState() == ThreadState::Terminated;
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}
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[[nodiscard]] u64 GetId() const override {
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return this->GetThreadID();
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}
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[[nodiscard]] bool IsInitialized() const override {
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return initialized;
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}
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[[nodiscard]] uintptr_t GetPostDestroyArgument() const override {
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return reinterpret_cast<uintptr_t>(parent) | (resource_limit_release_hint ? 1 : 0);
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}
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void Finalize() override;
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[[nodiscard]] bool IsSignaled() const override;
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void OnTimer();
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static void PostDestroy(uintptr_t arg);
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[[nodiscard]] static ResultCode InitializeDummyThread(KThread* thread);
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[[nodiscard]] static ResultCode InitializeIdleThread(Core::System& system, KThread* thread,
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s32 virt_core);
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[[nodiscard]] static ResultCode InitializeHighPriorityThread(Core::System& system,
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KThread* thread,
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KThreadFunction func,
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uintptr_t arg, s32 virt_core);
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[[nodiscard]] static ResultCode InitializeUserThread(Core::System& system, KThread* thread,
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KThreadFunction func, uintptr_t arg,
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VAddr user_stack_top, s32 prio,
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s32 virt_core, KProcess* owner);
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public:
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struct StackParameters {
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u8 svc_permission[0x10];
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std::atomic<u8> dpc_flags;
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u8 current_svc_id;
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bool is_calling_svc;
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bool is_in_exception_handler;
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bool is_pinned;
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s32 disable_count;
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KThread* cur_thread;
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};
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[[nodiscard]] StackParameters& GetStackParameters() {
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return stack_parameters;
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}
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[[nodiscard]] const StackParameters& GetStackParameters() const {
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return stack_parameters;
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}
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class QueueEntry {
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public:
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constexpr QueueEntry() = default;
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constexpr void Initialize() {
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prev = nullptr;
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next = nullptr;
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}
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constexpr KThread* GetPrev() const {
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return prev;
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}
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constexpr KThread* GetNext() const {
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return next;
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}
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constexpr void SetPrev(KThread* thread) {
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prev = thread;
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}
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constexpr void SetNext(KThread* thread) {
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next = thread;
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}
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private:
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KThread* prev{};
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KThread* next{};
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};
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[[nodiscard]] QueueEntry& GetPriorityQueueEntry(s32 core) {
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return per_core_priority_queue_entry[core];
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}
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[[nodiscard]] const QueueEntry& GetPriorityQueueEntry(s32 core) const {
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return per_core_priority_queue_entry[core];
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}
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[[nodiscard]] bool IsKernelThread() const {
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return GetActiveCore() == 3;
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}
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[[nodiscard]] bool IsDispatchTrackingDisabled() const {
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return is_single_core || IsKernelThread();
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}
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[[nodiscard]] s32 GetDisableDispatchCount() const {
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if (IsDispatchTrackingDisabled()) {
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// TODO(bunnei): Until kernel threads are emulated, we cannot enable/disable dispatch.
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return 1;
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}
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return this->GetStackParameters().disable_count;
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}
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void DisableDispatch() {
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if (IsDispatchTrackingDisabled()) {
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// TODO(bunnei): Until kernel threads are emulated, we cannot enable/disable dispatch.
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return;
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}
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ASSERT(GetCurrentThread(kernel).GetDisableDispatchCount() >= 0);
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this->GetStackParameters().disable_count++;
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}
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void EnableDispatch() {
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if (IsDispatchTrackingDisabled()) {
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// TODO(bunnei): Until kernel threads are emulated, we cannot enable/disable dispatch.
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return;
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}
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ASSERT(GetCurrentThread(kernel).GetDisableDispatchCount() > 0);
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this->GetStackParameters().disable_count--;
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}
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void Pin(s32 current_core);
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void Unpin();
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void SetInExceptionHandler() {
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this->GetStackParameters().is_in_exception_handler = true;
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}
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void ClearInExceptionHandler() {
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this->GetStackParameters().is_in_exception_handler = false;
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}
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[[nodiscard]] bool IsInExceptionHandler() const {
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return this->GetStackParameters().is_in_exception_handler;
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}
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void SetIsCallingSvc() {
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this->GetStackParameters().is_calling_svc = true;
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}
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void ClearIsCallingSvc() {
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this->GetStackParameters().is_calling_svc = false;
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}
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[[nodiscard]] bool IsCallingSvc() const {
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return this->GetStackParameters().is_calling_svc;
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}
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[[nodiscard]] u8 GetSvcId() const {
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return this->GetStackParameters().current_svc_id;
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}
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void RegisterDpc(DpcFlag flag) {
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this->GetStackParameters().dpc_flags |= static_cast<u8>(flag);
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}
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void ClearDpc(DpcFlag flag) {
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this->GetStackParameters().dpc_flags &= ~static_cast<u8>(flag);
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}
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[[nodiscard]] u8 GetDpc() const {
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return this->GetStackParameters().dpc_flags;
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}
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[[nodiscard]] bool HasDpc() const {
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return this->GetDpc() != 0;
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}
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void SetWaitReasonForDebugging(ThreadWaitReasonForDebugging reason) {
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wait_reason_for_debugging = reason;
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}
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[[nodiscard]] ThreadWaitReasonForDebugging GetWaitReasonForDebugging() const {
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return wait_reason_for_debugging;
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}
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[[nodiscard]] ThreadType GetThreadTypeForDebugging() const {
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return thread_type_for_debugging;
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}
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void SetWaitObjectsForDebugging(const std::span<KSynchronizationObject*>& objects) {
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wait_objects_for_debugging.clear();
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wait_objects_for_debugging.reserve(objects.size());
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for (const auto& object : objects) {
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wait_objects_for_debugging.emplace_back(object);
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}
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}
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[[nodiscard]] const std::vector<KSynchronizationObject*>& GetWaitObjectsForDebugging() const {
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return wait_objects_for_debugging;
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}
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void SetMutexWaitAddressForDebugging(VAddr address) {
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mutex_wait_address_for_debugging = address;
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}
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[[nodiscard]] VAddr GetMutexWaitAddressForDebugging() const {
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return mutex_wait_address_for_debugging;
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}
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[[nodiscard]] s32 GetIdealCoreForDebugging() const {
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return virtual_ideal_core_id;
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}
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void AddWaiter(KThread* thread);
|
|
|
|
void RemoveWaiter(KThread* thread);
|
|
|
|
[[nodiscard]] ResultCode GetThreadContext3(std::vector<u8>& out);
|
|
|
|
[[nodiscard]] KThread* RemoveWaiterByKey(s32* out_num_waiters, VAddr key);
|
|
|
|
[[nodiscard]] VAddr GetAddressKey() const {
|
|
return address_key;
|
|
}
|
|
|
|
[[nodiscard]] u32 GetAddressKeyValue() const {
|
|
return address_key_value;
|
|
}
|
|
|
|
void SetAddressKey(VAddr key) {
|
|
address_key = key;
|
|
}
|
|
|
|
void SetAddressKey(VAddr key, u32 val) {
|
|
address_key = key;
|
|
address_key_value = val;
|
|
}
|
|
|
|
void ClearWaitQueue() {
|
|
wait_queue = nullptr;
|
|
}
|
|
|
|
void BeginWait(KThreadQueue* queue);
|
|
void NotifyAvailable(KSynchronizationObject* signaled_object, ResultCode wait_result_);
|
|
void EndWait(ResultCode wait_result_);
|
|
void CancelWait(ResultCode wait_result_, bool cancel_timer_task);
|
|
|
|
[[nodiscard]] bool HasWaiters() const {
|
|
return !waiter_list.empty();
|
|
}
|
|
|
|
[[nodiscard]] s32 GetNumKernelWaiters() const {
|
|
return num_kernel_waiters;
|
|
}
|
|
|
|
[[nodiscard]] u64 GetConditionVariableKey() const {
|
|
return condvar_key;
|
|
}
|
|
|
|
[[nodiscard]] u64 GetAddressArbiterKey() const {
|
|
return condvar_key;
|
|
}
|
|
|
|
private:
|
|
static constexpr size_t PriorityInheritanceCountMax = 10;
|
|
union SyncObjectBuffer {
|
|
std::array<KSynchronizationObject*, Svc::ArgumentHandleCountMax> sync_objects{};
|
|
std::array<Handle,
|
|
Svc::ArgumentHandleCountMax*(sizeof(KSynchronizationObject*) / sizeof(Handle))>
|
|
handles;
|
|
constexpr SyncObjectBuffer() {}
|
|
};
|
|
static_assert(sizeof(SyncObjectBuffer::sync_objects) == sizeof(SyncObjectBuffer::handles));
|
|
|
|
struct ConditionVariableComparator {
|
|
struct LightCompareType {
|
|
u64 cv_key{};
|
|
s32 priority{};
|
|
|
|
[[nodiscard]] constexpr u64 GetConditionVariableKey() const {
|
|
return cv_key;
|
|
}
|
|
|
|
[[nodiscard]] constexpr s32 GetPriority() const {
|
|
return priority;
|
|
}
|
|
};
|
|
|
|
template <typename T>
|
|
requires(
|
|
std::same_as<T, KThread> ||
|
|
std::same_as<T, LightCompareType>) static constexpr int Compare(const T& lhs,
|
|
const KThread& rhs) {
|
|
const u64 l_key = lhs.GetConditionVariableKey();
|
|
const u64 r_key = rhs.GetConditionVariableKey();
|
|
|
|
if (l_key < r_key) {
|
|
// Sort first by key
|
|
return -1;
|
|
} else if (l_key == r_key && lhs.GetPriority() < rhs.GetPriority()) {
|
|
// And then by priority.
|
|
return -1;
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
};
|
|
|
|
void AddWaiterImpl(KThread* thread);
|
|
|
|
void RemoveWaiterImpl(KThread* thread);
|
|
|
|
void StartTermination();
|
|
|
|
[[nodiscard]] ResultCode Initialize(KThreadFunction func, uintptr_t arg, VAddr user_stack_top,
|
|
s32 prio, s32 virt_core, KProcess* owner, ThreadType type);
|
|
|
|
[[nodiscard]] static ResultCode InitializeThread(KThread* thread, KThreadFunction func,
|
|
uintptr_t arg, VAddr user_stack_top, s32 prio,
|
|
s32 core, KProcess* owner, ThreadType type,
|
|
std::function<void(void*)>&& init_func,
|
|
void* init_func_parameter);
|
|
|
|
static void RestorePriority(KernelCore& kernel_ctx, KThread* thread);
|
|
|
|
// For core KThread implementation
|
|
ThreadContext32 thread_context_32{};
|
|
ThreadContext64 thread_context_64{};
|
|
Common::IntrusiveRedBlackTreeNode condvar_arbiter_tree_node{};
|
|
s32 priority{};
|
|
using ConditionVariableThreadTreeTraits =
|
|
Common::IntrusiveRedBlackTreeMemberTraitsDeferredAssert<
|
|
&KThread::condvar_arbiter_tree_node>;
|
|
using ConditionVariableThreadTree =
|
|
ConditionVariableThreadTreeTraits::TreeType<ConditionVariableComparator>;
|
|
ConditionVariableThreadTree* condvar_tree{};
|
|
u64 condvar_key{};
|
|
u64 virtual_affinity_mask{};
|
|
KAffinityMask physical_affinity_mask{};
|
|
u64 thread_id{};
|
|
std::atomic<s64> cpu_time{};
|
|
VAddr address_key{};
|
|
KProcess* parent{};
|
|
VAddr kernel_stack_top{};
|
|
u32* light_ipc_data{};
|
|
VAddr tls_address{};
|
|
KLightLock activity_pause_lock;
|
|
s64 schedule_count{};
|
|
s64 last_scheduled_tick{};
|
|
std::array<QueueEntry, Core::Hardware::NUM_CPU_CORES> per_core_priority_queue_entry{};
|
|
KThreadQueue* wait_queue{};
|
|
WaiterList waiter_list{};
|
|
WaiterList pinned_waiter_list{};
|
|
KThread* lock_owner{};
|
|
u32 address_key_value{};
|
|
u32 suspend_request_flags{};
|
|
u32 suspend_allowed_flags{};
|
|
s32 synced_index{};
|
|
ResultCode wait_result{ResultSuccess};
|
|
s32 base_priority{};
|
|
s32 physical_ideal_core_id{};
|
|
s32 virtual_ideal_core_id{};
|
|
s32 num_kernel_waiters{};
|
|
s32 current_core_id{};
|
|
s32 core_id{};
|
|
KAffinityMask original_physical_affinity_mask{};
|
|
s32 original_physical_ideal_core_id{};
|
|
s32 num_core_migration_disables{};
|
|
ThreadState thread_state{};
|
|
std::atomic<bool> termination_requested{};
|
|
bool wait_cancelled{};
|
|
bool cancellable{};
|
|
bool signaled{};
|
|
bool initialized{};
|
|
bool debug_attached{};
|
|
s8 priority_inheritance_count{};
|
|
bool resource_limit_release_hint{};
|
|
StackParameters stack_parameters{};
|
|
KSpinLock context_guard{};
|
|
|
|
// For emulation
|
|
std::shared_ptr<Common::Fiber> host_context{};
|
|
bool is_single_core{};
|
|
|
|
// For debugging
|
|
std::vector<KSynchronizationObject*> wait_objects_for_debugging;
|
|
VAddr mutex_wait_address_for_debugging{};
|
|
ThreadWaitReasonForDebugging wait_reason_for_debugging{};
|
|
ThreadType thread_type_for_debugging{};
|
|
|
|
public:
|
|
using ConditionVariableThreadTreeType = ConditionVariableThreadTree;
|
|
|
|
void SetConditionVariable(ConditionVariableThreadTree* tree, VAddr address, u64 cv_key,
|
|
u32 value) {
|
|
condvar_tree = tree;
|
|
condvar_key = cv_key;
|
|
address_key = address;
|
|
address_key_value = value;
|
|
}
|
|
|
|
void ClearConditionVariable() {
|
|
condvar_tree = nullptr;
|
|
}
|
|
|
|
[[nodiscard]] bool IsWaitingForConditionVariable() const {
|
|
return condvar_tree != nullptr;
|
|
}
|
|
|
|
void SetAddressArbiter(ConditionVariableThreadTree* tree, u64 address) {
|
|
condvar_tree = tree;
|
|
condvar_key = address;
|
|
}
|
|
|
|
void ClearAddressArbiter() {
|
|
condvar_tree = nullptr;
|
|
}
|
|
|
|
[[nodiscard]] bool IsWaitingForAddressArbiter() const {
|
|
return condvar_tree != nullptr;
|
|
}
|
|
|
|
[[nodiscard]] ConditionVariableThreadTree* GetConditionVariableTree() const {
|
|
return condvar_tree;
|
|
}
|
|
};
|
|
|
|
class KScopedDisableDispatch {
|
|
public:
|
|
[[nodiscard]] explicit KScopedDisableDispatch(KernelCore& kernel_) : kernel{kernel_} {
|
|
// If we are shutting down the kernel, none of this is relevant anymore.
|
|
if (kernel.IsShuttingDown()) {
|
|
return;
|
|
}
|
|
GetCurrentThread(kernel).DisableDispatch();
|
|
}
|
|
|
|
~KScopedDisableDispatch();
|
|
|
|
private:
|
|
KernelCore& kernel;
|
|
};
|
|
|
|
} // namespace Kernel
|