666 lines
20 KiB
C++
666 lines
20 KiB
C++
// Copyright 2014 Citra Emulator Project / PPSSPP 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 <functional>
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#include <string>
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#include <vector>
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#include "common/common_types.h"
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#include "common/spin_lock.h"
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#include "core/arm/arm_interface.h"
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#include "core/hle/kernel/object.h"
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#include "core/hle/kernel/synchronization_object.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 System;
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} // namespace Core
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namespace Kernel {
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class GlobalScheduler;
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class KernelCore;
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class Process;
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class Scheduler;
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enum ThreadPriority : u32 {
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THREADPRIO_HIGHEST = 0, ///< Highest thread priority
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THREADPRIO_MAX_CORE_MIGRATION = 2, ///< Highest priority for a core migration
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THREADPRIO_USERLAND_MAX = 24, ///< Highest thread priority for userland apps
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THREADPRIO_DEFAULT = 44, ///< Default thread priority for userland apps
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THREADPRIO_LOWEST = 63, ///< Lowest thread priority
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THREADPRIO_COUNT = 64, ///< Total number of possible thread priorities.
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};
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enum ThreadType : u32 {
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THREADTYPE_USER = 0x1,
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THREADTYPE_KERNEL = 0x2,
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THREADTYPE_HLE = 0x4,
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THREADTYPE_IDLE = 0x8,
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THREADTYPE_SUSPEND = 0x10,
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};
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enum ThreadProcessorId : s32 {
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/// Indicates that no particular processor core is preferred.
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THREADPROCESSORID_DONT_CARE = -1,
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/// Run thread on the ideal core specified by the process.
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THREADPROCESSORID_IDEAL = -2,
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/// Indicates that the preferred processor ID shouldn't be updated in
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/// a core mask setting operation.
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THREADPROCESSORID_DONT_UPDATE = -3,
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THREADPROCESSORID_0 = 0, ///< Run thread on core 0
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THREADPROCESSORID_1 = 1, ///< Run thread on core 1
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THREADPROCESSORID_2 = 2, ///< Run thread on core 2
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THREADPROCESSORID_3 = 3, ///< Run thread on core 3
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THREADPROCESSORID_MAX = 4, ///< Processor ID must be less than this
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/// Allowed CPU mask
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THREADPROCESSORID_DEFAULT_MASK = (1 << THREADPROCESSORID_0) | (1 << THREADPROCESSORID_1) |
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(1 << THREADPROCESSORID_2) | (1 << THREADPROCESSORID_3)
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};
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enum class ThreadStatus {
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Running, ///< Currently running
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Ready, ///< Ready to run
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Paused, ///< Paused by SetThreadActivity or debug
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WaitHLEEvent, ///< Waiting for hle event to finish
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WaitSleep, ///< Waiting due to a SleepThread SVC
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WaitIPC, ///< Waiting for the reply from an IPC request
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WaitSynch, ///< Waiting due to WaitSynchronization
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WaitMutex, ///< Waiting due to an ArbitrateLock svc
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WaitCondVar, ///< Waiting due to an WaitProcessWideKey svc
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WaitArb, ///< Waiting due to a SignalToAddress/WaitForAddress svc
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Dormant, ///< Created but not yet made ready
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Dead ///< Run to completion, or forcefully terminated
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};
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enum class ThreadWakeupReason {
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Signal, // The thread was woken up by WakeupAllWaitingThreads due to an object signal.
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Timeout // The thread was woken up due to a wait timeout.
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};
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enum class ThreadActivity : u32 {
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Normal = 0,
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Paused = 1,
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};
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enum class ThreadSchedStatus : u32 {
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None = 0,
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Paused = 1,
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Runnable = 2,
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Exited = 3,
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};
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enum class ThreadSchedFlags : u32 {
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ProcessPauseFlag = 1 << 4,
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ThreadPauseFlag = 1 << 5,
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ProcessDebugPauseFlag = 1 << 6,
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KernelInitPauseFlag = 1 << 8,
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};
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enum class ThreadSchedMasks : u32 {
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LowMask = 0x000f,
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HighMask = 0xfff0,
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ForcePauseMask = 0x0070,
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};
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class Thread final : public SynchronizationObject {
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public:
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explicit Thread(KernelCore& kernel);
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~Thread() override;
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using MutexWaitingThreads = std::vector<std::shared_ptr<Thread>>;
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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 ThreadSynchronizationObjects = std::vector<std::shared_ptr<SynchronizationObject>>;
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using WakeupCallback =
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std::function<bool(ThreadWakeupReason reason, std::shared_ptr<Thread> thread,
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std::shared_ptr<SynchronizationObject> object, std::size_t index)>;
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using HLECallback = std::function<bool(std::shared_ptr<Thread> thread)>;
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/**
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* Creates and returns a new thread. The new thread is immediately scheduled
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* @param system The instance of the whole system
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* @param name The friendly name desired for the thread
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* @param entry_point The address at which the thread should start execution
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* @param priority The thread's priority
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* @param arg User data to pass to the thread
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* @param processor_id The ID(s) of the processors on which the thread is desired to be run
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* @param stack_top The address of the thread's stack top
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* @param owner_process The parent process for the thread, if null, it's a kernel thread
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* @return A shared pointer to the newly created thread
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*/
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static ResultVal<std::shared_ptr<Thread>> Create(Core::System& system, ThreadType type_flags,
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std::string name, VAddr entry_point,
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u32 priority, u64 arg, s32 processor_id,
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VAddr stack_top, Process* owner_process);
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/**
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* Creates and returns a new thread. The new thread is immediately scheduled
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* @param system The instance of the whole system
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* @param name The friendly name desired for the thread
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* @param entry_point The address at which the thread should start execution
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* @param priority The thread's priority
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* @param arg User data to pass to the thread
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* @param processor_id The ID(s) of the processors on which the thread is desired to be run
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* @param stack_top The address of the thread's stack top
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* @param owner_process The parent process for the thread, if null, it's a kernel thread
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* @param thread_start_func The function where the host context will start.
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* @param thread_start_parameter The parameter which will passed to host context on init
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* @return A shared pointer to the newly created thread
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*/
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static ResultVal<std::shared_ptr<Thread>> Create(Core::System& system, ThreadType type_flags,
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std::string name, VAddr entry_point,
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u32 priority, u64 arg, s32 processor_id,
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VAddr stack_top, Process* owner_process,
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std::function<void(void*)>&& thread_start_func,
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void* thread_start_parameter);
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std::string GetName() const override {
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return name;
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}
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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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std::string GetTypeName() const override {
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return "Thread";
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}
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static constexpr HandleType HANDLE_TYPE = HandleType::Thread;
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HandleType GetHandleType() const override {
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return HANDLE_TYPE;
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}
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bool ShouldWait(const Thread* thread) const override;
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void Acquire(Thread* thread) override;
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bool IsSignaled() const override;
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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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u32 GetPriority() const {
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return current_priority;
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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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u32 GetNominalPriority() const {
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return nominal_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(u32 priority);
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/// Adds a thread to the list of threads that are waiting for a lock held by this thread.
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void AddMutexWaiter(std::shared_ptr<Thread> thread);
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/// Removes a thread from the list of threads that are waiting for a lock held by this thread.
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void RemoveMutexWaiter(std::shared_ptr<Thread> thread);
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/// Recalculates the current priority taking into account priority inheritance.
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void UpdatePriority();
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/// Changes the core that the thread is running or scheduled to run on.
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ResultCode SetCoreAndAffinityMask(s32 new_core, u64 new_affinity_mask);
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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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u64 GetThreadID() const {
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return thread_id;
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}
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/// Resumes a thread from waiting
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void /* deprecated */ ResumeFromWait();
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void OnWakeUp();
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ResultCode Start();
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/// Cancels a waiting operation that this thread may or may not be within.
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///
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/// When the thread is within a waiting state, this will set the thread's
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/// waiting result to signal a canceled wait. The function will then resume
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/// this thread.
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///
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void CancelWait();
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/**
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* Schedules an event to wake up the specified thread after the specified delay
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* @param nanoseconds The time this thread will be allowed to sleep for
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*/
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void /* deprecated */ WakeAfterDelay(s64 nanoseconds);
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/// Cancel any outstanding wakeup events for this thread
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void /* deprecated */ CancelWakeupTimer();
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/**
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* Sets the result after the thread awakens (from svcWaitSynchronization)
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* @param result Value to set to the returned result
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*/
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void /*deprecated*/ SetWaitSynchronizationResult(ResultCode result);
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/**
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* Sets the output parameter value after the thread awakens (from svcWaitSynchronization)
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* @param output Value to set to the output parameter
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*/
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void /*deprecated*/ SetWaitSynchronizationOutput(s32 output);
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void SetSynchronizationResults(SynchronizationObject* object, ResultCode result);
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SynchronizationObject* GetSignalingObject() const {
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return signaling_object;
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}
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ResultCode GetSignalingResult() const {
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return signaling_result;
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}
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/**
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* Retrieves the index that this particular object occupies in the list of objects
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* that the thread passed to WaitSynchronization, starting the search from the last element.
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*
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* It is used to set the output index of WaitSynchronization when the thread is awakened.
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*
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* When a thread wakes up due to an object signal, the kernel will use the index of the last
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* matching object in the wait objects list in case of having multiple instances of the same
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* object in the list.
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*
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* @param object Object to query the index of.
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*/
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s32 GetSynchronizationObjectIndex(std::shared_ptr<SynchronizationObject> object) const;
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/**
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* Stops a thread, invalidating it from further use
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*/
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void Stop();
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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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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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u64 GetTPIDR_EL0() const {
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return tpidr_el0;
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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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tpidr_el0 = value;
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}
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/*
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* Returns the address of the current thread's command buffer, located in the TLS.
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* @returns VAddr of the thread's command buffer.
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*/
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VAddr GetCommandBufferAddress() const;
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/// Returns whether this thread is waiting on objects from a WaitSynchronization call.
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bool IsSleepingOnWait() const {
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return status == ThreadStatus::WaitSynch;
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}
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ThreadContext32& GetContext32() {
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return context_32;
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}
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const ThreadContext32& GetContext32() const {
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return context_32;
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}
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ThreadContext64& GetContext64() {
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return context_64;
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}
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const ThreadContext64& GetContext64() const {
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return context_64;
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}
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bool IsHLEThread() const {
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return (type & THREADTYPE_HLE) != 0;
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}
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std::shared_ptr<Common::Fiber> GetHostContext() const;
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ThreadStatus GetStatus() const {
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return status;
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}
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void SetStatus(ThreadStatus new_status);
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u64 GetLastRunningTicks() const {
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return last_running_ticks;
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}
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u64 GetTotalCPUTimeTicks() const {
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return total_cpu_time_ticks;
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}
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void UpdateCPUTimeTicks(u64 ticks) {
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total_cpu_time_ticks += ticks;
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}
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s32 GetProcessorID() const {
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return processor_id;
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}
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void SetProcessorID(s32 new_core) {
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processor_id = new_core;
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}
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Process* GetOwnerProcess() {
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return owner_process;
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}
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const Process* GetOwnerProcess() const {
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return owner_process;
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}
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const ThreadSynchronizationObjects& GetSynchronizationObjects() const {
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return *wait_objects;
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}
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void SetSynchronizationObjects(ThreadSynchronizationObjects* objects) {
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wait_objects = objects;
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}
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void ClearSynchronizationObjects() {
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for (const auto& waiting_object : *wait_objects) {
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waiting_object->RemoveWaitingThread(SharedFrom(this));
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}
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wait_objects->clear();
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}
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/// Determines whether all the objects this thread is waiting on are ready.
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bool AllSynchronizationObjectsReady() const;
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const MutexWaitingThreads& GetMutexWaitingThreads() const {
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return wait_mutex_threads;
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}
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Thread* GetLockOwner() const {
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return lock_owner.get();
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}
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void SetLockOwner(std::shared_ptr<Thread> owner) {
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lock_owner = std::move(owner);
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}
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VAddr GetCondVarWaitAddress() const {
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return condvar_wait_address;
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}
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void SetCondVarWaitAddress(VAddr address) {
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condvar_wait_address = address;
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}
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VAddr GetMutexWaitAddress() const {
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return mutex_wait_address;
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}
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void SetMutexWaitAddress(VAddr address) {
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mutex_wait_address = address;
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}
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Handle GetWaitHandle() const {
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return wait_handle;
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}
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void SetWaitHandle(Handle handle) {
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wait_handle = handle;
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}
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VAddr GetArbiterWaitAddress() const {
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return arb_wait_address;
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}
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void SetArbiterWaitAddress(VAddr address) {
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arb_wait_address = address;
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}
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bool HasWakeupCallback() const {
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return wakeup_callback != nullptr;
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}
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bool HasHLECallback() const {
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return hle_callback != nullptr;
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}
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void SetWakeupCallback(WakeupCallback callback) {
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wakeup_callback = std::move(callback);
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}
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void SetHLECallback(HLECallback callback) {
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hle_callback = std::move(callback);
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}
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void SetHLETimeEvent(Handle time_event) {
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hle_time_event = time_event;
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}
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Handle GetHLETimeEvent() const {
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return hle_time_event;
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}
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void InvalidateWakeupCallback() {
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SetWakeupCallback(nullptr);
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}
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void InvalidateHLECallback() {
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SetHLECallback(nullptr);
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}
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/**
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* Invokes the thread's wakeup callback.
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*
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* @pre A valid wakeup callback has been set. Violating this precondition
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* will cause an assertion to trigger.
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*/
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bool InvokeWakeupCallback(ThreadWakeupReason reason, std::shared_ptr<Thread> thread,
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std::shared_ptr<SynchronizationObject> object, std::size_t index);
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bool InvokeHLECallback(std::shared_ptr<Thread> thread);
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u32 GetIdealCore() const {
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return ideal_core;
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}
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u64 GetAffinityMask() const {
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return affinity_mask;
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}
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ThreadActivity GetActivity() const {
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return activity;
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}
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void SetActivity(ThreadActivity value);
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/// Sleeps this thread for the given amount of nanoseconds.
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ResultCode Sleep(s64 nanoseconds);
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/// Yields this thread without rebalancing loads.
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ResultCode YieldSimple();
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/// Yields this thread and does a load rebalancing.
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ResultCode YieldAndBalanceLoad();
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/// Yields this thread and if the core is left idle, loads are rebalanced
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ResultCode YieldAndWaitForLoadBalancing();
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void IncrementYieldCount() {
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yield_count++;
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}
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u64 GetYieldCount() const {
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return yield_count;
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}
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ThreadSchedStatus GetSchedulingStatus() const {
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return static_cast<ThreadSchedStatus>(scheduling_state &
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static_cast<u32>(ThreadSchedMasks::LowMask));
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}
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bool IsRunning() const {
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return is_running;
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}
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void SetIsRunning(bool value) {
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is_running = value;
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}
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bool IsSyncCancelled() const {
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return is_sync_cancelled;
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}
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void SetSyncCancelled(bool value) {
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is_sync_cancelled = value;
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}
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Handle GetGlobalHandle() const {
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return global_handle;
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}
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bool IsWaitingForArbitration() const {
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return waiting_for_arbitration;
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}
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void WaitForArbitration(bool set) {
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waiting_for_arbitration = set;
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}
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private:
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friend class GlobalScheduler;
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friend class Scheduler;
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void SetSchedulingStatus(ThreadSchedStatus new_status);
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void SetCurrentPriority(u32 new_priority);
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void AdjustSchedulingOnAffinity(u64 old_affinity_mask, s32 old_core);
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ThreadContext32 context_32{};
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ThreadContext64 context_64{};
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Common::SpinLock context_guard{};
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std::shared_ptr<Common::Fiber> host_context{};
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u64 thread_id = 0;
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ThreadStatus status = ThreadStatus::Dormant;
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VAddr entry_point = 0;
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VAddr stack_top = 0;
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ThreadType type;
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|
|
/// Nominal thread priority, as set by the emulated application.
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/// The nominal priority is the thread priority without priority
|
|
/// inheritance taken into account.
|
|
u32 nominal_priority = 0;
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|
|
|
/// Current thread priority. This may change over the course of the
|
|
/// thread's lifetime in order to facilitate priority inheritance.
|
|
u32 current_priority = 0;
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|
|
|
u64 total_cpu_time_ticks = 0; ///< Total CPU running ticks.
|
|
u64 last_running_ticks = 0; ///< CPU tick when thread was last running
|
|
u64 yield_count = 0; ///< Number of redundant yields carried by this thread.
|
|
///< a redundant yield is one where no scheduling is changed
|
|
|
|
s32 processor_id = 0;
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|
|
|
VAddr tls_address = 0; ///< Virtual address of the Thread Local Storage of the thread
|
|
u64 tpidr_el0 = 0; ///< TPIDR_EL0 read/write system register.
|
|
|
|
/// Process that owns this thread
|
|
Process* owner_process;
|
|
|
|
/// Objects that the thread is waiting on, in the same order as they were
|
|
/// passed to WaitSynchronization.
|
|
ThreadSynchronizationObjects* wait_objects;
|
|
|
|
SynchronizationObject* signaling_object;
|
|
ResultCode signaling_result{RESULT_SUCCESS};
|
|
|
|
/// List of threads that are waiting for a mutex that is held by this thread.
|
|
MutexWaitingThreads wait_mutex_threads;
|
|
|
|
/// Thread that owns the lock that this thread is waiting for.
|
|
std::shared_ptr<Thread> lock_owner;
|
|
|
|
/// If waiting on a ConditionVariable, this is the ConditionVariable address
|
|
VAddr condvar_wait_address = 0;
|
|
/// If waiting on a Mutex, this is the mutex address
|
|
VAddr mutex_wait_address = 0;
|
|
/// The handle used to wait for the mutex.
|
|
Handle wait_handle = 0;
|
|
|
|
/// If waiting for an AddressArbiter, this is the address being waited on.
|
|
VAddr arb_wait_address{0};
|
|
bool waiting_for_arbitration{};
|
|
|
|
/// Handle used as userdata to reference this object when inserting into the CoreTiming queue.
|
|
Handle global_handle = 0;
|
|
|
|
/// Callback that will be invoked when the thread is resumed from a waiting state. If the thread
|
|
/// was waiting via WaitSynchronization then the object will be the last object that became
|
|
/// available. In case of a timeout, the object will be nullptr. DEPRECATED
|
|
WakeupCallback wakeup_callback;
|
|
|
|
/// Callback for HLE Events
|
|
HLECallback hle_callback;
|
|
Handle hle_time_event;
|
|
|
|
Scheduler* scheduler = nullptr;
|
|
|
|
u32 ideal_core{0xFFFFFFFF};
|
|
u64 affinity_mask{0x1};
|
|
|
|
ThreadActivity activity = ThreadActivity::Normal;
|
|
|
|
s32 ideal_core_override = -1;
|
|
u64 affinity_mask_override = 0x1;
|
|
u32 affinity_override_count = 0;
|
|
|
|
u32 scheduling_state = 0;
|
|
bool is_running = false;
|
|
bool is_sync_cancelled = false;
|
|
|
|
bool will_be_terminated{};
|
|
|
|
std::string name;
|
|
};
|
|
|
|
/**
|
|
* Gets the current thread
|
|
*/
|
|
Thread* GetCurrentThread();
|
|
|
|
} // namespace Kernel
|