early-access version 1355

README.md

@@ -1,7 +1,7 @@
 yuzu emulator early access
 =============
 
-This is the source code for early-access 1350.
+This is the source code for early-access 1355.
 
 ## Legal Notice
 

src/common/bit_util.h

@@ -4,13 +4,10 @@
 
 #pragma once
 
+#include <bit>
 #include <climits>
 #include <cstddef>
 
-#ifdef _MSC_VER
-#include <intrin.h>
-#endif
-
 #include "common/common_types.h"
 
 namespace Common {
@@ -21,48 +18,30 @@ template <typename T>
     return sizeof(T) * CHAR_BIT;
 }
 
-#ifdef _MSC_VER
+[[nodiscard]] constexpr u32 MostSignificantBit32(const u32 value) {
-
+    return 31U - static_cast<u32>(std::countl_zero(value));
-[[nodiscard]] inline u32 MostSignificantBit32(const u32 value) {
-    unsigned long result;
-    _BitScanReverse(&result, value);
-    return static_cast<u32>(result);
 }
 
-[[nodiscard]] inline u32 MostSignificantBit64(const u64 value) {
+[[nodiscard]] constexpr u32 MostSignificantBit64(const u64 value) {
-    unsigned long result;
+    return 63U - static_cast<u32>(std::countl_zero(value));
-    _BitScanReverse64(&result, value);
-    return static_cast<u32>(result);
 }
 
-#else
+[[nodiscard]] constexpr u32 Log2Floor32(const u32 value) {
-
-[[nodiscard]] inline u32 MostSignificantBit32(const u32 value) {
-    return 31U - static_cast<u32>(__builtin_clz(value));
-}
-
-[[nodiscard]] inline u32 MostSignificantBit64(const u64 value) {
-    return 63U - static_cast<u32>(__builtin_clzll(value));
-}
-
-#endif
-
-[[nodiscard]] inline u32 Log2Floor32(const u32 value) {
     return MostSignificantBit32(value);
 }
 
-[[nodiscard]] inline u32 Log2Ceil32(const u32 value) {
+[[nodiscard]] constexpr u32 Log2Floor64(const u64 value) {
-    const u32 log2_f = Log2Floor32(value);
-    return log2_f + ((value ^ (1U << log2_f)) != 0U);
-}
-
-[[nodiscard]] inline u32 Log2Floor64(const u64 value) {
     return MostSignificantBit64(value);
 }
 
-[[nodiscard]] inline u32 Log2Ceil64(const u64 value) {
+[[nodiscard]] constexpr u32 Log2Ceil32(const u32 value) {
-    const u64 log2_f = static_cast<u64>(Log2Floor64(value));
+    const u32 log2_f = Log2Floor32(value);
-    return static_cast<u32>(log2_f + ((value ^ (1ULL << log2_f)) != 0ULL));
+    return log2_f + static_cast<u32>((value ^ (1U << log2_f)) != 0U);
+}
+
+[[nodiscard]] constexpr u32 Log2Ceil64(const u64 value) {
+    const u64 log2_f = Log2Floor64(value);
+    return static_cast<u32>(log2_f + static_cast<u64>((value ^ (1ULL << log2_f)) != 0ULL));
 }
 
 } // namespace Common

src/common/common_funcs.h

@@ -101,6 +101,20 @@ __declspec(dllimport) void __stdcall DebugBreak(void);
         }                                                                                          \
     }
 
+#define R_SUCCEEDED(res) (res.IsSuccess())
+
+/// Evaluates an expression that returns a result, and returns the result if it would fail.
+#define R_TRY(res_expr)                                                                            \
+    {                                                                                              \
+        const auto _tmp_r_try_rc = (res_expr);                                                     \
+        if (_tmp_r_try_rc.IsError()) {                                                             \
+            return _tmp_r_try_rc;                                                                  \
+        }                                                                                          \
+    }
+
+/// Evaluates a boolean expression, and succeeds if that expression is true.
+#define R_SUCCEED_IF(expr) R_UNLESS(!(expr), RESULT_SUCCESS)
+
 namespace Common {
 
 [[nodiscard]] constexpr u32 MakeMagic(char a, char b, char c, char d) {

src/core/CMakeLists.txt

@@ -159,6 +159,8 @@ add_library(core STATIC
     hle/kernel/k_affinity_mask.h
     hle/kernel/k_condition_variable.cpp
     hle/kernel/k_condition_variable.h
+    hle/kernel/k_light_lock.cpp
+    hle/kernel/k_light_lock.h
     hle/kernel/k_priority_queue.h
     hle/kernel/k_scheduler.cpp
     hle/kernel/k_scheduler.h
@@ -167,6 +169,9 @@ add_library(core STATIC
     hle/kernel/k_scoped_scheduler_lock_and_sleep.h
     hle/kernel/k_synchronization_object.cpp
     hle/kernel/k_synchronization_object.h
+    hle/kernel/k_thread.cpp
+    hle/kernel/k_thread.h
+    hle/kernel/k_thread_queue.h
     hle/kernel/kernel.cpp
     hle/kernel/kernel.h
     hle/kernel/memory/address_space_info.cpp
@@ -215,8 +220,6 @@ add_library(core STATIC
     hle/kernel/svc_results.h
     hle/kernel/svc_types.h
     hle/kernel/svc_wrap.h
-    hle/kernel/thread.cpp
-    hle/kernel/thread.h
     hle/kernel/time_manager.cpp
     hle/kernel/time_manager.h
     hle/kernel/transfer_memory.cpp

src/core/arm/dynarmic/arm_dynarmic_32.cpp

@@ -251,10 +251,16 @@ void ARM_Dynarmic_32::SetTPIDR_EL0(u64 value) {
 }
 
 void ARM_Dynarmic_32::ChangeProcessorID(std::size_t new_core_id) {
+    if (!jit) {
+        return;
+    }
     jit->ChangeProcessorID(new_core_id);
 }
 
 void ARM_Dynarmic_32::SaveContext(ThreadContext32& ctx) {
+    if (!jit) {
+        return;
+    }
     Dynarmic::A32::Context context;
     jit->SaveContext(context);
     ctx.cpu_registers = context.Regs();
@@ -264,6 +270,9 @@ void ARM_Dynarmic_32::SaveContext(ThreadContext32& ctx) {
 }
 
 void ARM_Dynarmic_32::LoadContext(const ThreadContext32& ctx) {
+    if (!jit) {
+        return;
+    }
     Dynarmic::A32::Context context;
     context.Regs() = ctx.cpu_registers;
     context.ExtRegs() = ctx.extension_registers;
@@ -273,6 +282,9 @@ void ARM_Dynarmic_32::LoadContext(const ThreadContext32& ctx) {
 }
 
 void ARM_Dynarmic_32::PrepareReschedule() {
+    if (!jit) {
+        return;
+    }
     jit->HaltExecution();
 }
 

src/core/arm/dynarmic/arm_dynarmic_64.cpp

@@ -290,10 +290,16 @@ void ARM_Dynarmic_64::SetTPIDR_EL0(u64 value) {
 }
 
 void ARM_Dynarmic_64::ChangeProcessorID(std::size_t new_core_id) {
+    if (!jit) {
+        return;
+    }
     jit->ChangeProcessorID(new_core_id);
 }
 
 void ARM_Dynarmic_64::SaveContext(ThreadContext64& ctx) {
+    if (!jit) {
+        return;
+    }
     ctx.cpu_registers = jit->GetRegisters();
     ctx.sp = jit->GetSP();
     ctx.pc = jit->GetPC();
@@ -305,6 +311,9 @@ void ARM_Dynarmic_64::SaveContext(ThreadContext64& ctx) {
 }
 
 void ARM_Dynarmic_64::LoadContext(const ThreadContext64& ctx) {
+    if (!jit) {
+        return;
+    }
     jit->SetRegisters(ctx.cpu_registers);
     jit->SetSP(ctx.sp);
     jit->SetPC(ctx.pc);
@@ -316,6 +325,9 @@ void ARM_Dynarmic_64::LoadContext(const ThreadContext64& ctx) {
 }
 
 void ARM_Dynarmic_64::PrepareReschedule() {
+    if (!jit) {
+        return;
+    }
     jit->HaltExecution();
 }
 

src/core/core.cpp

@@ -28,10 +28,10 @@
 #include "core/hardware_interrupt_manager.h"
 #include "core/hle/kernel/client_port.h"
 #include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/physical_core.h"
 #include "core/hle/kernel/process.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/service/am/applets/applets.h"
 #include "core/hle/service/apm/controller.h"
 #include "core/hle/service/filesystem/filesystem.h"

src/core/cpu_manager.cpp

@@ -11,9 +11,9 @@
 #include "core/core_timing.h"
 #include "core/cpu_manager.h"
 #include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/physical_core.h"
-#include "core/hle/kernel/thread.h"
 #include "video_core/gpu.h"
 
 namespace Core {
@@ -147,7 +147,7 @@ void CpuManager::MultiCoreRunSuspendThread() {
     while (true) {
         auto core = kernel.GetCurrentHostThreadID();
         auto& scheduler = *kernel.CurrentScheduler();
-        Kernel::Thread* current_thread = scheduler.GetCurrentThread();
+        Kernel::KThread* current_thread = scheduler.GetCurrentThread();
         Common::Fiber::YieldTo(current_thread->GetHostContext(), core_data[core].host_context);
         ASSERT(scheduler.ContextSwitchPending());
         ASSERT(core == kernel.GetCurrentHostThreadID());
@@ -208,7 +208,6 @@ void CpuManager::SingleCoreRunGuestThread() {
 
 void CpuManager::SingleCoreRunGuestLoop() {
     auto& kernel = system.Kernel();
-    auto* thread = kernel.CurrentScheduler()->GetCurrentThread();
     while (true) {
         auto* physical_core = &kernel.CurrentPhysicalCore();
         system.EnterDynarmicProfile();
@@ -217,9 +216,9 @@ void CpuManager::SingleCoreRunGuestLoop() {
             physical_core = &kernel.CurrentPhysicalCore();
         }
         system.ExitDynarmicProfile();
-        thread->SetPhantomMode(true);
+        kernel.SetIsPhantomModeForSingleCore(true);
         system.CoreTiming().Advance();
-        thread->SetPhantomMode(false);
+        kernel.SetIsPhantomModeForSingleCore(false);
         physical_core->ArmInterface().ClearExclusiveState();
         PreemptSingleCore();
         auto& scheduler = kernel.Scheduler(current_core);
@@ -245,7 +244,7 @@ void CpuManager::SingleCoreRunSuspendThread() {
     while (true) {
         auto core = kernel.GetCurrentHostThreadID();
         auto& scheduler = *kernel.CurrentScheduler();
-        Kernel::Thread* current_thread = scheduler.GetCurrentThread();
+        Kernel::KThread* current_thread = scheduler.GetCurrentThread();
         Common::Fiber::YieldTo(current_thread->GetHostContext(), core_data[0].host_context);
         ASSERT(scheduler.ContextSwitchPending());
         ASSERT(core == kernel.GetCurrentHostThreadID());
@@ -255,22 +254,23 @@ void CpuManager::SingleCoreRunSuspendThread() {
 
 void CpuManager::PreemptSingleCore(bool from_running_enviroment) {
     {
-        auto& scheduler = system.Kernel().Scheduler(current_core);
+        auto& kernel = system.Kernel();
-        Kernel::Thread* current_thread = scheduler.GetCurrentThread();
+        auto& scheduler = kernel.Scheduler(current_core);
+        Kernel::KThread* current_thread = scheduler.GetCurrentThread();
         if (idle_count >= 4 || from_running_enviroment) {
             if (!from_running_enviroment) {
                 system.CoreTiming().Idle();
                 idle_count = 0;
             }
-            current_thread->SetPhantomMode(true);
+            kernel.SetIsPhantomModeForSingleCore(true);
             system.CoreTiming().Advance();
-            current_thread->SetPhantomMode(false);
+            kernel.SetIsPhantomModeForSingleCore(false);
         }
         current_core.store((current_core + 1) % Core::Hardware::NUM_CPU_CORES);
         system.CoreTiming().ResetTicks();
         scheduler.Unload(scheduler.GetCurrentThread());
 
-        auto& next_scheduler = system.Kernel().Scheduler(current_core);
+        auto& next_scheduler = kernel.Scheduler(current_core);
         Common::Fiber::YieldTo(current_thread->GetHostContext(), next_scheduler.ControlContext());
     }
 
@@ -278,8 +278,7 @@ void CpuManager::PreemptSingleCore(bool from_running_enviroment) {
     {
         auto& scheduler = system.Kernel().Scheduler(current_core);
         scheduler.Reload(scheduler.GetCurrentThread());
-        auto* currrent_thread2 = scheduler.GetCurrentThread();
+        if (!scheduler.IsIdle()) {
-        if (!currrent_thread2->IsIdleThread()) {
             idle_count = 0;
         }
     }

src/core/hardware_properties.h

@@ -4,8 +4,10 @@
 
 #pragma once
 
+#include <array>
 #include <tuple>
 
+#include "common/bit_util.h"
 #include "common/common_types.h"
 
 namespace Core {
@@ -18,34 +20,12 @@ constexpr u64 BASE_CLOCK_RATE = 1019215872; // Switch cpu frequency is 1020MHz u
 constexpr u64 CNTFREQ = 19200000;           // Switch's hardware clock speed
 constexpr u32 NUM_CPU_CORES = 4;            // Number of CPU Cores
 
-} // namespace Hardware
+// Virtual to Physical core map.
-
+constexpr std::array<s32, Common::BitSize<u64>()> VirtualToPhysicalCoreMap{
-constexpr u32 INVALID_HOST_THREAD_ID = 0xFFFFFFFF;
+    0, 1, 2, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3,
-struct EmuThreadHandle {
-    u32 host_handle;
-    u32 guest_handle;
-
-    u64 GetRaw() const {
-        return (static_cast<u64>(host_handle) << 32) | guest_handle;
-    }
-
-    bool operator==(const EmuThreadHandle& rhs) const {
-        return std::tie(host_handle, guest_handle) == std::tie(rhs.host_handle, rhs.guest_handle);
-    }
-
-    bool operator!=(const EmuThreadHandle& rhs) const {
-        return !operator==(rhs);
-    }
-
-    static constexpr EmuThreadHandle InvalidHandle() {
-        constexpr u32 invalid_handle = 0xFFFFFFFF;
-        return {invalid_handle, invalid_handle};
-    }
-
-    bool IsInvalid() const {
-        return (*this) == InvalidHandle();
-    }
 };
 
+} // namespace Hardware
+
 } // namespace Core

src/core/hle/kernel/client_port.h

@@ -51,6 +51,8 @@ public:
      */
     void ConnectionClosed();
 
+    void Finalize() override {}
+
 private:
     std::shared_ptr<ServerPort> server_port; ///< ServerPort associated with this client port.
     u32 max_sessions = 0;    ///< Maximum number of simultaneous sessions the port can have

src/core/hle/kernel/client_session.cpp

@@ -5,9 +5,9 @@
 #include "core/hle/kernel/client_session.h"
 #include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/hle_ipc.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/server_session.h"
 #include "core/hle/kernel/session.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/result.h"
 
 namespace Kernel {
@@ -38,7 +38,7 @@ ResultVal<std::shared_ptr<ClientSession>> ClientSession::Create(KernelCore& kern
     return MakeResult(std::move(client_session));
 }
 
-ResultCode ClientSession::SendSyncRequest(std::shared_ptr<Thread> thread,
+ResultCode ClientSession::SendSyncRequest(std::shared_ptr<KThread> thread,
                                           Core::Memory::Memory& memory,
                                           Core::Timing::CoreTiming& core_timing) {
     // Keep ServerSession alive until we're done working with it.

src/core/hle/kernel/client_session.h

@@ -24,7 +24,7 @@ namespace Kernel {
 
 class KernelCore;
 class Session;
-class Thread;
+class KThread;
 
 class ClientSession final : public KSynchronizationObject {
 public:
@@ -46,11 +46,13 @@ public:
         return HANDLE_TYPE;
     }
 
-    ResultCode SendSyncRequest(std::shared_ptr<Thread> thread, Core::Memory::Memory& memory,
+    ResultCode SendSyncRequest(std::shared_ptr<KThread> thread, Core::Memory::Memory& memory,
                                Core::Timing::CoreTiming& core_timing);
 
     bool IsSignaled() const override;
 
+    void Finalize() override {}
+
 private:
     static ResultVal<std::shared_ptr<ClientSession>> Create(KernelCore& kernel,
                                                             std::shared_ptr<Session> parent,

src/core/hle/kernel/global_scheduler_context.cpp

@@ -17,12 +17,12 @@ GlobalSchedulerContext::GlobalSchedulerContext(KernelCore& kernel)
 
 GlobalSchedulerContext::~GlobalSchedulerContext() = default;
 
-void GlobalSchedulerContext::AddThread(std::shared_ptr<Thread> thread) {
+void GlobalSchedulerContext::AddThread(std::shared_ptr<KThread> thread) {
     std::scoped_lock lock{global_list_guard};
     thread_list.push_back(std::move(thread));
 }
 
-void GlobalSchedulerContext::RemoveThread(std::shared_ptr<Thread> thread) {
+void GlobalSchedulerContext::RemoveThread(std::shared_ptr<KThread> thread) {
     std::scoped_lock lock{global_list_guard};
     thread_list.erase(std::remove(thread_list.begin(), thread_list.end(), thread),
                       thread_list.end());

src/core/hle/kernel/global_scheduler_context.h

@@ -12,7 +12,8 @@
 #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/thread.h"
+#include "core/hle/kernel/k_thread.h"
+#include "core/hle/kernel/svc_types.h"
 
 namespace Kernel {
 
@@ -20,8 +21,12 @@ class KernelCore;
 class SchedulerLock;
 
 using KSchedulerPriorityQueue =
-    KPriorityQueue<Thread, Core::Hardware::NUM_CPU_CORES, THREADPRIO_LOWEST, THREADPRIO_HIGHEST>;
+    KPriorityQueue<KThread, Core::Hardware::NUM_CPU_CORES, Svc::LowestThreadPriority,
-constexpr s32 HighestCoreMigrationAllowedPriority = 2;
+                   Svc::HighestThreadPriority>;
+
+static constexpr s32 HighestCoreMigrationAllowedPriority = 2;
+static_assert(Svc::LowestThreadPriority >= HighestCoreMigrationAllowedPriority);
+static_assert(Svc::HighestThreadPriority <= HighestCoreMigrationAllowedPriority);
 
 class GlobalSchedulerContext final {
     friend class KScheduler;
@@ -33,13 +38,13 @@ public:
     ~GlobalSchedulerContext();
 
     /// Adds a new thread to the scheduler
-    void AddThread(std::shared_ptr<Thread> thread);
+    void AddThread(std::shared_ptr<KThread> thread);
 
     /// Removes a thread from the scheduler
-    void RemoveThread(std::shared_ptr<Thread> thread);
+    void RemoveThread(std::shared_ptr<KThread> thread);
 
     /// Returns a list of all threads managed by the scheduler
-    [[nodiscard]] const std::vector<std::shared_ptr<Thread>>& GetThreadList() const {
+    [[nodiscard]] const std::vector<std::shared_ptr<KThread>>& GetThreadList() const {
         return thread_list;
     }
 
@@ -74,7 +79,7 @@ private:
     LockType scheduler_lock;
 
     /// Lists all thread ids that aren't deleted/etc.
-    std::vector<std::shared_ptr<Thread>> thread_list;
+    std::vector<std::shared_ptr<KThread>> thread_list;
     Common::SpinLock global_list_guard{};
 };
 

src/core/hle/kernel/handle_table.cpp

@@ -9,9 +9,9 @@
 #include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/process.h"
-#include "core/hle/kernel/thread.h"
 
 namespace Kernel {
 namespace {
@@ -89,6 +89,10 @@ ResultCode HandleTable::Close(Handle handle) {
 
     const u16 slot = GetSlot(handle);
 
+    if (objects[slot].use_count() == 1) {
+        objects[slot]->Finalize();
+    }
+
     objects[slot] = nullptr;
 
     generations[slot] = next_free_slot;

src/core/hle/kernel/hle_ipc.cpp

@@ -19,12 +19,12 @@
 #include "core/hle/kernel/hle_ipc.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/object.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/readable_event.h"
 #include "core/hle/kernel/server_session.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/time_manager.h"
 #include "core/hle/kernel/writable_event.h"
 #include "core/memory.h"
@@ -48,7 +48,7 @@ void SessionRequestHandler::ClientDisconnected(
 
 HLERequestContext::HLERequestContext(KernelCore& kernel, Core::Memory::Memory& memory,
                                      std::shared_ptr<ServerSession> server_session,
-                                     std::shared_ptr<Thread> thread)
+                                     std::shared_ptr<KThread> thread)
     : server_session(std::move(server_session)),
       thread(std::move(thread)), kernel{kernel}, memory{memory} {
     cmd_buf[0] = 0;
@@ -182,7 +182,7 @@ ResultCode HLERequestContext::PopulateFromIncomingCommandBuffer(const HandleTabl
     return RESULT_SUCCESS;
 }
 
-ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(Thread& thread) {
+ResultCode HLERequestContext::WriteToOutgoingCommandBuffer(KThread& thread) {
     auto& owner_process = *thread.GetOwnerProcess();
     auto& handle_table = owner_process.GetHandleTable();
 

src/core/hle/kernel/hle_ipc.h

@@ -40,7 +40,7 @@ class HLERequestContext;
 class KernelCore;
 class Process;
 class ServerSession;
-class Thread;
+class KThread;
 class ReadableEvent;
 class WritableEvent;
 
@@ -110,7 +110,7 @@ class HLERequestContext {
 public:
     explicit HLERequestContext(KernelCore& kernel, Core::Memory::Memory& memory,
                                std::shared_ptr<ServerSession> session,
-                               std::shared_ptr<Thread> thread);
+                               std::shared_ptr<KThread> thread);
     ~HLERequestContext();
 
     /// Returns a pointer to the IPC command buffer for this request.
@@ -126,15 +126,12 @@ public:
         return server_session;
     }
 
-    using WakeupCallback = std::function<void(
-        std::shared_ptr<Thread> thread, HLERequestContext& context, ThreadWakeupReason reason)>;
-
     /// Populates this context with data from the requesting process/thread.
     ResultCode PopulateFromIncomingCommandBuffer(const HandleTable& handle_table,
                                                  u32_le* src_cmdbuf);
 
     /// Writes data from this context back to the requesting process/thread.
-    ResultCode WriteToOutgoingCommandBuffer(Thread& thread);
+    ResultCode WriteToOutgoingCommandBuffer(KThread& thread);
 
     u32_le GetCommand() const {
         return command;
@@ -261,11 +258,11 @@ public:
 
     std::string Description() const;
 
-    Thread& GetThread() {
+    KThread& GetThread() {
         return *thread;
     }
 
-    const Thread& GetThread() const {
+    const KThread& GetThread() const {
         return *thread;
     }
 
@@ -280,7 +277,7 @@ private:
 
     std::array<u32, IPC::COMMAND_BUFFER_LENGTH> cmd_buf;
     std::shared_ptr<Kernel::ServerSession> server_session;
-    std::shared_ptr<Thread> thread;
+    std::shared_ptr<KThread> thread;
     // TODO(yuriks): Check common usage of this and optimize size accordingly
     boost::container::small_vector<std::shared_ptr<Object>, 8> move_objects;
     boost::container::small_vector<std::shared_ptr<Object>, 8> copy_objects;

src/core/hle/kernel/k_address_arbiter.cpp

@@ -7,9 +7,9 @@
 #include "core/hle/kernel/k_address_arbiter.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/svc_results.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/time_manager.h"
 #include "core/memory.h"
 
@@ -96,7 +96,7 @@ ResultCode KAddressArbiter::Signal(VAddr addr, s32 count) {
         auto it = thread_tree.nfind_light({addr, -1});
         while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) &&
                (it->GetAddressArbiterKey() == addr)) {
-            Thread* target_thread = std::addressof(*it);
+            KThread* target_thread = std::addressof(*it);
             target_thread->SetSyncedObject(nullptr, RESULT_SUCCESS);
 
             ASSERT(target_thread->IsWaitingForAddressArbiter());
@@ -125,7 +125,7 @@ ResultCode KAddressArbiter::SignalAndIncrementIfEqual(VAddr addr, s32 value, s32
         auto it = thread_tree.nfind_light({addr, -1});
         while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) &&
                (it->GetAddressArbiterKey() == addr)) {
-            Thread* target_thread = std::addressof(*it);
+            KThread* target_thread = std::addressof(*it);
             target_thread->SetSyncedObject(nullptr, RESULT_SUCCESS);
 
             ASSERT(target_thread->IsWaitingForAddressArbiter());
@@ -215,7 +215,7 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32
 
         while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) &&
                (it->GetAddressArbiterKey() == addr)) {
-            Thread* target_thread = std::addressof(*it);
+            KThread* target_thread = std::addressof(*it);
             target_thread->SetSyncedObject(nullptr, RESULT_SUCCESS);
 
             ASSERT(target_thread->IsWaitingForAddressArbiter());
@@ -231,11 +231,10 @@ ResultCode KAddressArbiter::SignalAndModifyByWaitingCountIfEqual(VAddr addr, s32
 
 ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement, s64 timeout) {
     // Prepare to wait.
-    Thread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
+    KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
-    Handle timer = InvalidHandle;
 
     {
-        KScopedSchedulerLockAndSleep slp(kernel, timer, cur_thread, timeout);
+        KScopedSchedulerLockAndSleep slp{kernel, cur_thread, timeout};
 
         // Check that the thread isn't terminating.
         if (cur_thread->IsTerminationRequested()) {
@@ -280,10 +279,7 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
     }
 
     // Cancel the timer wait.
-    if (timer != InvalidHandle) {
+    kernel.TimeManager().UnscheduleTimeEvent(cur_thread);
-        auto& time_manager = kernel.TimeManager();
-        time_manager.UnscheduleTimeEvent(timer);
-    }
 
     // Remove from the address arbiter.
     {
@@ -302,11 +298,10 @@ ResultCode KAddressArbiter::WaitIfLessThan(VAddr addr, s32 value, bool decrement
 
 ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
     // Prepare to wait.
-    Thread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
+    KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
-    Handle timer = InvalidHandle;
 
     {
-        KScopedSchedulerLockAndSleep slp(kernel, timer, cur_thread, timeout);
+        KScopedSchedulerLockAndSleep slp{kernel, cur_thread, timeout};
 
         // Check that the thread isn't terminating.
         if (cur_thread->IsTerminationRequested()) {
@@ -344,10 +339,7 @@ ResultCode KAddressArbiter::WaitIfEqual(VAddr addr, s32 value, s64 timeout) {
     }
 
     // Cancel the timer wait.
-    if (timer != InvalidHandle) {
+    kernel.TimeManager().UnscheduleTimeEvent(cur_thread);
-        auto& time_manager = kernel.TimeManager();
-        time_manager.UnscheduleTimeEvent(timer);
-    }
 
     // Remove from the address arbiter.
     {

src/core/hle/kernel/k_condition_variable.cpp

@@ -10,11 +10,11 @@
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
 #include "core/hle/kernel/k_synchronization_object.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/svc_common.h"
 #include "core/hle/kernel/svc_results.h"
-#include "core/hle/kernel/thread.h"
 #include "core/memory.h"
 
 namespace Kernel {
@@ -66,7 +66,7 @@ KConditionVariable::KConditionVariable(Core::System& system_)
 KConditionVariable::~KConditionVariable() = default;
 
 ResultCode KConditionVariable::SignalToAddress(VAddr addr) {
-    Thread* owner_thread = kernel.CurrentScheduler()->GetCurrentThread();
+    KThread* owner_thread = kernel.CurrentScheduler()->GetCurrentThread();
 
     // Signal the address.
     {
@@ -74,7 +74,7 @@ ResultCode KConditionVariable::SignalToAddress(VAddr addr) {
 
         // Remove waiter thread.
         s32 num_waiters{};
-        Thread* next_owner_thread =
+        KThread* next_owner_thread =
             owner_thread->RemoveWaiterByKey(std::addressof(num_waiters), addr);
 
         // Determine the next tag.
@@ -103,11 +103,11 @@ ResultCode KConditionVariable::SignalToAddress(VAddr addr) {
 }
 
 ResultCode KConditionVariable::WaitForAddress(Handle handle, VAddr addr, u32 value) {
-    Thread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
+    KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
 
     // Wait for the address.
     {
-        std::shared_ptr<Thread> owner_thread;
+        std::shared_ptr<KThread> owner_thread;
         ASSERT(!owner_thread);
         {
             KScopedSchedulerLock sl(kernel);
@@ -126,7 +126,7 @@ ResultCode KConditionVariable::WaitForAddress(Handle handle, VAddr addr, u32 val
                 R_UNLESS(test_tag == (handle | Svc::HandleWaitMask), RESULT_SUCCESS);
 
                 // Get the lock owner thread.
-                owner_thread = kernel.CurrentProcess()->GetHandleTable().Get<Thread>(handle);
+                owner_thread = kernel.CurrentProcess()->GetHandleTable().Get<KThread>(handle);
                 R_UNLESS(owner_thread, Svc::ResultInvalidHandle);
 
                 // Update the lock.
@@ -143,7 +143,7 @@ ResultCode KConditionVariable::WaitForAddress(Handle handle, VAddr addr, u32 val
     // Remove the thread as a waiter from the lock owner.
     {
         KScopedSchedulerLock sl(kernel);
-        Thread* owner_thread = cur_thread->GetLockOwner();
+        KThread* owner_thread = cur_thread->GetLockOwner();
         if (owner_thread != nullptr) {
             owner_thread->RemoveWaiter(cur_thread);
         }
@@ -154,7 +154,7 @@ ResultCode KConditionVariable::WaitForAddress(Handle handle, VAddr addr, u32 val
     return cur_thread->GetWaitResult(std::addressof(dummy));
 }
 
-Thread* KConditionVariable::SignalImpl(Thread* thread) {
+KThread* KConditionVariable::SignalImpl(KThread* thread) {
     // Check pre-conditions.
     ASSERT(kernel.GlobalSchedulerContext().IsLocked());
 
@@ -174,7 +174,7 @@ Thread* KConditionVariable::SignalImpl(Thread* thread) {
         }
     }
 
-    Thread* thread_to_close = nullptr;
+    KThread* thread_to_close = nullptr;
     if (can_access) {
         if (prev_tag == InvalidHandle) {
             // If nobody held the lock previously, we're all good.
@@ -182,7 +182,7 @@ Thread* KConditionVariable::SignalImpl(Thread* thread) {
             thread->Wakeup();
         } else {
             // Get the previous owner.
-            auto owner_thread = kernel.CurrentProcess()->GetHandleTable().Get<Thread>(
+            auto owner_thread = kernel.CurrentProcess()->GetHandleTable().Get<KThread>(
                 prev_tag & ~Svc::HandleWaitMask);
 
             if (owner_thread) {
@@ -210,8 +210,8 @@ void KConditionVariable::Signal(u64 cv_key, s32 count) {
 
     // TODO(bunnei): This should just be Thread once we implement KAutoObject instead of using
     // std::shared_ptr.
-    std::vector<std::shared_ptr<Thread>> thread_list;
+    std::vector<std::shared_ptr<KThread>> thread_list;
-    std::array<Thread*, MaxThreads> thread_array;
+    std::array<KThread*, MaxThreads> thread_array;
     s32 num_to_close{};
 
     // Perform signaling.
@@ -222,9 +222,9 @@ void KConditionVariable::Signal(u64 cv_key, s32 count) {
         auto it = thread_tree.nfind_light({cv_key, -1});
         while ((it != thread_tree.end()) && (count <= 0 || num_waiters < count) &&
                (it->GetConditionVariableKey() == cv_key)) {
-            Thread* target_thread = std::addressof(*it);
+            KThread* target_thread = std::addressof(*it);
 
-            if (Thread* thread = SignalImpl(target_thread); thread != nullptr) {
+            if (KThread* thread = SignalImpl(target_thread); thread != nullptr) {
                 if (num_to_close < MaxThreads) {
                     thread_array[num_to_close++] = thread;
                 } else {
@@ -257,11 +257,10 @@ void KConditionVariable::Signal(u64 cv_key, s32 count) {
 
 ResultCode KConditionVariable::Wait(VAddr addr, u64 key, u32 value, s64 timeout) {
     // Prepare to wait.
-    Thread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
+    KThread* cur_thread = kernel.CurrentScheduler()->GetCurrentThread();
-    Handle timer = InvalidHandle;
 
     {
-        KScopedSchedulerLockAndSleep slp(kernel, timer, cur_thread, timeout);
+        KScopedSchedulerLockAndSleep slp{kernel, cur_thread, timeout};
 
         // Set the synced object.
         cur_thread->SetSyncedObject(nullptr, Svc::ResultTimedOut);
@@ -276,7 +275,7 @@ ResultCode KConditionVariable::Wait(VAddr addr, u64 key, u32 value, s64 timeout)
         {
             // Remove waiter thread.
             s32 num_waiters{};
-            Thread* next_owner_thread =
+            KThread* next_owner_thread =
                 cur_thread->RemoveWaiterByKey(std::addressof(num_waiters), addr);
 
             // Update for the next owner thread.
@@ -322,16 +321,13 @@ ResultCode KConditionVariable::Wait(VAddr addr, u64 key, u32 value, s64 timeout)
     }
 
     // Cancel the timer wait.
-    if (timer != InvalidHandle) {
+    kernel.TimeManager().UnscheduleTimeEvent(cur_thread);
-        auto& time_manager = kernel.TimeManager();
-        time_manager.UnscheduleTimeEvent(timer);
-    }
 
     // Remove from the condition variable.
     {
         KScopedSchedulerLock sl(kernel);
 
-        if (Thread* owner = cur_thread->GetLockOwner(); owner != nullptr) {
+        if (KThread* owner = cur_thread->GetLockOwner(); owner != nullptr) {
             owner->RemoveWaiter(cur_thread);
         }
 

src/core/hle/kernel/k_condition_variable.h

@@ -8,8 +8,8 @@
 #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/kernel/thread.h"
 #include "core/hle/result.h"
 
 namespace Core {
@@ -20,7 +20,7 @@ namespace Kernel {
 
 class KConditionVariable {
 public:
-    using ThreadTree = typename Thread::ConditionVariableThreadTreeType;
+    using ThreadTree = typename KThread::ConditionVariableThreadTreeType;
 
     explicit KConditionVariable(Core::System& system_);
     ~KConditionVariable();
@@ -34,7 +34,7 @@ public:
     [[nodiscard]] ResultCode Wait(VAddr addr, u64 key, u32 value, s64 timeout);
 
 private:
-    [[nodiscard]] Thread* SignalImpl(Thread* thread);
+    [[nodiscard]] KThread* SignalImpl(KThread* thread);
 
     ThreadTree thread_tree;
 
@@ -43,14 +43,14 @@ private:
 };
 
 inline void BeforeUpdatePriority(const KernelCore& kernel, KConditionVariable::ThreadTree* tree,
-                                 Thread* thread) {
+                                 KThread* thread) {
     ASSERT(kernel.GlobalSchedulerContext().IsLocked());
 
     tree->erase(tree->iterator_to(*thread));
 }
 
 inline void AfterUpdatePriority(const KernelCore& kernel, KConditionVariable::ThreadTree* tree,
-                                Thread* thread) {
+                                KThread* thread) {
     ASSERT(kernel.GlobalSchedulerContext().IsLocked());
 
     tree->insert(*thread);

src/core/hle/kernel/k_light_lock.cpp

@@ -9,12 +9,6 @@
 
 namespace Kernel {
 
-static KThread* ToThread(uintptr_t thread_) {
-    ASSERT((thread_ & EmuThreadHandleReserved) == 0);
-    ASSERT((thread_ & 1) == 0);
-    return reinterpret_cast<KThread*>(thread_);
-}
-
 void KLightLock::Lock() {
     const uintptr_t cur_thread = reinterpret_cast<uintptr_t>(GetCurrentThreadPointer(kernel));
     const uintptr_t cur_thread_tag = (cur_thread | 1);
@@ -48,7 +42,7 @@ void KLightLock::Unlock() {
 }
 
 void KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) {
-    KThread* cur_thread = ToThread(_cur_thread);
+    KThread* cur_thread = reinterpret_cast<KThread*>(_cur_thread);
 
     // Pend the current thread waiting on the owner thread.
     {
@@ -60,7 +54,7 @@ void KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) {
         }
 
         // Add the current thread as a waiter on the owner.
-        KThread* owner_thread = ToThread(_owner & ~1ul);
+        KThread* owner_thread = reinterpret_cast<KThread*>(_owner & ~1ul);
         cur_thread->SetAddressKey(reinterpret_cast<uintptr_t>(std::addressof(tag)));
         owner_thread->AddWaiter(cur_thread);
 
@@ -88,7 +82,7 @@ void KLightLock::LockSlowPath(uintptr_t _owner, uintptr_t _cur_thread) {
 }
 
 void KLightLock::UnlockSlowPath(uintptr_t _cur_thread) {
-    KThread* owner_thread = ToThread(_cur_thread);
+    KThread* owner_thread = reinterpret_cast<KThread*>(_cur_thread);
 
     // Unlock.
     {

src/core/hle/kernel/k_priority_queue.h

@@ -18,7 +18,7 @@
 
 namespace Kernel {
 
-class Thread;
+class KThread;
 
 template <typename T>
 concept KPriorityQueueAffinityMask = !std::is_reference_v<T> && requires(T & t) {
@@ -367,7 +367,7 @@ public:
         this->scheduled_queue.MoveToFront(member->GetPriority(), member->GetActiveCore(), member);
     }
 
-    constexpr Thread* MoveToScheduledBack(Member* member) {
+    constexpr KThread* MoveToScheduledBack(Member* member) {
         return this->scheduled_queue.MoveToBack(member->GetPriority(), member->GetActiveCore(),
                                                 member);
     }

src/core/hle/kernel/k_scheduler.cpp

@@ -17,25 +17,30 @@
 #include "core/cpu_manager.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/physical_core.h"
 #include "core/hle/kernel/process.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/time_manager.h"
 
 namespace Kernel {
 
-static void IncrementScheduledCount(Kernel::Thread* thread) {
+static void IncrementScheduledCount(Kernel::KThread* thread) {
     if (auto process = thread->GetOwnerProcess(); process) {
         process->IncrementScheduledCount();
     }
 }
 
-void KScheduler::RescheduleCores(KernelCore& kernel, u64 cores_pending_reschedule,
+void KScheduler::RescheduleCores(KernelCore& kernel, u64 cores_pending_reschedule) {
-                                 Core::EmuThreadHandle global_thread) {
+    auto scheduler = kernel.CurrentScheduler();
-    const u32 current_core = global_thread.host_handle;
+
-    bool must_context_switch = global_thread.guest_handle != InvalidHandle &&
+    u32 current_core{0xF};
-                               (current_core < Core::Hardware::NUM_CPU_CORES);
+    bool must_context_switch{};
+    if (scheduler) {
+        current_core = scheduler->core_id;
+        // TODO(bunnei): Should be set to true when we deprecate single core
+        must_context_switch = !kernel.IsPhantomModeForSingleCore();
+    }
 
     while (cores_pending_reschedule != 0) {
         const auto core = static_cast<u32>(std::countr_zero(cores_pending_reschedule));
@@ -56,28 +61,27 @@ void KScheduler::RescheduleCores(KernelCore& kernel, u64 cores_pending_reschedul
     }
 }
 
-u64 KScheduler::UpdateHighestPriorityThread(Thread* highest_thread) {
+u64 KScheduler::UpdateHighestPriorityThread(KThread* highest_thread) {
     std::scoped_lock lock{guard};
-    if (Thread* prev_highest_thread = this->state.highest_priority_thread;
+    if (KThread* prev_highest_thread = state.highest_priority_thread;
         prev_highest_thread != highest_thread) {
         if (prev_highest_thread != nullptr) {
             IncrementScheduledCount(prev_highest_thread);
             prev_highest_thread->SetLastScheduledTick(system.CoreTiming().GetCPUTicks());
         }
-        if (this->state.should_count_idle) {
+        if (state.should_count_idle) {
             if (highest_thread != nullptr) {
-                // if (Process* process = highest_thread->GetOwnerProcess(); process != nullptr) {
+                if (Process* process = highest_thread->GetOwnerProcess(); process != nullptr) {
-                //    process->SetRunningThread(this->core_id, highest_thread,
+                    process->SetRunningThread(core_id, highest_thread, state.idle_count);
-                //                              this->state.idle_count);
+                }
-                //}
             } else {
-                this->state.idle_count++;
+                state.idle_count++;
             }
         }
 
-        this->state.highest_priority_thread = highest_thread;
+        state.highest_priority_thread = highest_thread;
-        this->state.needs_scheduling = true;
+        state.needs_scheduling.store(true);
-        return (1ULL << this->core_id);
+        return (1ULL << core_id);
     } else {
         return 0;
     }
@@ -90,16 +94,29 @@ u64 KScheduler::UpdateHighestPriorityThreadsImpl(KernelCore& kernel) {
     ClearSchedulerUpdateNeeded(kernel);
 
     u64 cores_needing_scheduling = 0, idle_cores = 0;
-    Thread* top_threads[Core::Hardware::NUM_CPU_CORES];
+    KThread* top_threads[Core::Hardware::NUM_CPU_CORES];
     auto& priority_queue = GetPriorityQueue(kernel);
 
     /// We want to go over all cores, finding the highest priority thread and determining if
     /// scheduling is needed for that core.
     for (size_t core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) {
-        Thread* top_thread = priority_queue.GetScheduledFront(static_cast<s32>(core_id));
+        KThread* top_thread = priority_queue.GetScheduledFront(static_cast<s32>(core_id));
         if (top_thread != nullptr) {
             // If the thread has no waiters, we need to check if the process has a thread pinned.
-            // TODO(bunnei): Implement thread pinning
+            if (top_thread->GetNumKernelWaiters() == 0) {
+                if (Process* parent = top_thread->GetOwnerProcess(); parent != nullptr) {
+                    if (KThread* pinned = parent->GetPinnedThread(static_cast<s32>(core_id));
+                        pinned != nullptr && pinned != top_thread) {
+                        // We prefer our parent's pinned thread if possible. However, we also don't
+                        // want to schedule un-runnable threads.
+                        if (pinned->GetRawState() == ThreadState::Runnable) {
+                            top_thread = pinned;
+                        } else {
+                            top_thread = nullptr;
+                        }
+                    }
+                }
+            }
         } else {
             idle_cores |= (1ULL << core_id);
         }
@@ -112,7 +129,7 @@ u64 KScheduler::UpdateHighestPriorityThreadsImpl(KernelCore& kernel) {
     // Idle cores are bad. We're going to try to migrate threads to each idle core in turn.
     while (idle_cores != 0) {
         const auto core_id = static_cast<u32>(std::countr_zero(idle_cores));
-        if (Thread* suggested = priority_queue.GetSuggestedFront(core_id); suggested != nullptr) {
+        if (KThread* suggested = priority_queue.GetSuggestedFront(core_id); suggested != nullptr) {
             s32 migration_candidates[Core::Hardware::NUM_CPU_CORES];
             size_t num_candidates = 0;
 
@@ -120,7 +137,7 @@ u64 KScheduler::UpdateHighestPriorityThreadsImpl(KernelCore& kernel) {
             while (suggested != nullptr) {
                 // Check if the suggested thread is the top thread on its core.
                 const s32 suggested_core = suggested->GetActiveCore();
-                if (Thread* top_thread =
+                if (KThread* top_thread =
                         (suggested_core >= 0) ? top_threads[suggested_core] : nullptr;
                     top_thread != suggested) {
                     // Make sure we're not dealing with threads too high priority for migration.
@@ -152,7 +169,7 @@ u64 KScheduler::UpdateHighestPriorityThreadsImpl(KernelCore& kernel) {
                     // Check if there's some other thread that can run on the candidate core.
                     const s32 candidate_core = migration_candidates[i];
                     suggested = top_threads[candidate_core];
-                    if (Thread* next_on_candidate_core =
+                    if (KThread* next_on_candidate_core =
                             priority_queue.GetScheduledNext(candidate_core, suggested);
                         next_on_candidate_core != nullptr) {
                         // The candidate core can run some other thread! We'll migrate its current
@@ -182,7 +199,20 @@ u64 KScheduler::UpdateHighestPriorityThreadsImpl(KernelCore& kernel) {
     return cores_needing_scheduling;
 }
 
-void KScheduler::OnThreadStateChanged(KernelCore& kernel, Thread* thread, ThreadState old_state) {
+void KScheduler::ClearPreviousThread(KernelCore& kernel, KThread* thread) {
+    ASSERT(kernel.GlobalSchedulerContext().IsLocked());
+    for (size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; ++i) {
+        // Get an atomic reference to the core scheduler's previous thread.
+        std::atomic_ref<KThread*> prev_thread(kernel.Scheduler(static_cast<s32>(i)).prev_thread);
+        static_assert(std::atomic_ref<KThread*>::is_always_lock_free);
+
+        // Atomically clear the previous thread if it's our target.
+        KThread* compare = thread;
+        prev_thread.compare_exchange_strong(compare, nullptr);
+    }
+}
+
+void KScheduler::OnThreadStateChanged(KernelCore& kernel, KThread* thread, ThreadState old_state) {
     ASSERT(kernel.GlobalSchedulerContext().IsLocked());
 
     // Check if the state has changed, because if it hasn't there's nothing to do.
@@ -205,7 +235,7 @@ void KScheduler::OnThreadStateChanged(KernelCore& kernel, Thread* thread, Thread
     }
 }
 
-void KScheduler::OnThreadPriorityChanged(KernelCore& kernel, Thread* thread, s32 old_priority) {
+void KScheduler::OnThreadPriorityChanged(KernelCore& kernel, KThread* thread, s32 old_priority) {
     ASSERT(kernel.GlobalSchedulerContext().IsLocked());
 
     // If the thread is runnable, we want to change its priority in the queue.
@@ -217,7 +247,7 @@ void KScheduler::OnThreadPriorityChanged(KernelCore& kernel, Thread* thread, s32
     }
 }
 
-void KScheduler::OnThreadAffinityMaskChanged(KernelCore& kernel, Thread* thread,
+void KScheduler::OnThreadAffinityMaskChanged(KernelCore& kernel, KThread* thread,
                                              const KAffinityMask& old_affinity, s32 old_core) {
     ASSERT(kernel.GlobalSchedulerContext().IsLocked());
 
@@ -237,8 +267,8 @@ void KScheduler::RotateScheduledQueue(s32 core_id, s32 priority) {
     auto& priority_queue = GetPriorityQueue(kernel);
 
     // Rotate the front of the queue to the end.
-    Thread* top_thread = priority_queue.GetScheduledFront(core_id, priority);
+    KThread* top_thread = priority_queue.GetScheduledFront(core_id, priority);
-    Thread* next_thread = nullptr;
+    KThread* next_thread = nullptr;
     if (top_thread != nullptr) {
         next_thread = priority_queue.MoveToScheduledBack(top_thread);
         if (next_thread != top_thread) {
@@ -249,11 +279,11 @@ void KScheduler::RotateScheduledQueue(s32 core_id, s32 priority) {
 
     // While we have a suggested thread, try to migrate it!
     {
-        Thread* suggested = priority_queue.GetSuggestedFront(core_id, priority);
+        KThread* suggested = priority_queue.GetSuggestedFront(core_id, priority);
         while (suggested != nullptr) {
             // Check if the suggested thread is the top thread on its core.
             const s32 suggested_core = suggested->GetActiveCore();
-            if (Thread* top_on_suggested_core =
+            if (KThread* top_on_suggested_core =
                     (suggested_core >= 0) ? priority_queue.GetScheduledFront(suggested_core)
                                           : nullptr;
                 top_on_suggested_core != suggested) {
@@ -285,7 +315,7 @@ void KScheduler::RotateScheduledQueue(s32 core_id, s32 priority) {
     // Now that we might have migrated a thread with the same priority, check if we can do better.
 
     {
-        Thread* best_thread = priority_queue.GetScheduledFront(core_id);
+        KThread* best_thread = priority_queue.GetScheduledFront(core_id);
         if (best_thread == GetCurrentThread()) {
             best_thread = priority_queue.GetScheduledNext(core_id, best_thread);
         }
@@ -293,7 +323,7 @@ void KScheduler::RotateScheduledQueue(s32 core_id, s32 priority) {
         // If the best thread we can choose has a priority the same or worse than ours, try to
         // migrate a higher priority thread.
         if (best_thread != nullptr && best_thread->GetPriority() >= priority) {
-            Thread* suggested = priority_queue.GetSuggestedFront(core_id);
+            KThread* suggested = priority_queue.GetSuggestedFront(core_id);
             while (suggested != nullptr) {
                 // If the suggestion's priority is the same as ours, don't bother.
                 if (suggested->GetPriority() >= best_thread->GetPriority()) {
@@ -302,7 +332,7 @@ void KScheduler::RotateScheduledQueue(s32 core_id, s32 priority) {
 
                 // Check if the suggested thread is the top thread on its core.
                 const s32 suggested_core = suggested->GetActiveCore();
-                if (Thread* top_on_suggested_core =
+                if (KThread* top_on_suggested_core =
                         (suggested_core >= 0) ? priority_queue.GetScheduledFront(suggested_core)
                                               : nullptr;
                     top_on_suggested_core != suggested) {
@@ -352,12 +382,14 @@ void KScheduler::DisableScheduling(KernelCore& kernel) {
     }
 }
 
-void KScheduler::EnableScheduling(KernelCore& kernel, u64 cores_needing_scheduling,
+void KScheduler::EnableScheduling(KernelCore& kernel, u64 cores_needing_scheduling) {
-                                  Core::EmuThreadHandle global_thread) {
     if (auto* scheduler = kernel.CurrentScheduler(); scheduler) {
-        scheduler->GetCurrentThread()->EnableDispatch();
+        ASSERT(scheduler->GetCurrentThread()->GetDisableDispatchCount() >= 1);
+        if (scheduler->GetCurrentThread()->GetDisableDispatchCount() >= 1) {
+            scheduler->GetCurrentThread()->EnableDispatch();
+        }
     }
-    RescheduleCores(kernel, cores_needing_scheduling, global_thread);
+    RescheduleCores(kernel, cores_needing_scheduling);
 }
 
 u64 KScheduler::UpdateHighestPriorityThreads(KernelCore& kernel) {
@@ -372,15 +404,13 @@ KSchedulerPriorityQueue& KScheduler::GetPriorityQueue(KernelCore& kernel) {
     return kernel.GlobalSchedulerContext().priority_queue;
 }
 
-void KScheduler::YieldWithoutCoreMigration() {
+void KScheduler::YieldWithoutCoreMigration(KernelCore& kernel) {
-    auto& kernel = system.Kernel();
-
     // Validate preconditions.
     ASSERT(CanSchedule(kernel));
     ASSERT(kernel.CurrentProcess() != nullptr);
 
     // Get the current thread and process.
-    Thread& cur_thread = *GetCurrentThread();
+    KThread& cur_thread = Kernel::GetCurrentThread(kernel);
     Process& cur_process = *kernel.CurrentProcess();
 
     // If the thread's yield count matches, there's nothing for us to do.
@@ -398,7 +428,7 @@ void KScheduler::YieldWithoutCoreMigration() {
         const auto cur_state = cur_thread.GetRawState();
         if (cur_state == ThreadState::Runnable) {
             // Put the current thread at the back of the queue.
-            Thread* next_thread = priority_queue.MoveToScheduledBack(std::addressof(cur_thread));
+            KThread* next_thread = priority_queue.MoveToScheduledBack(std::addressof(cur_thread));
             IncrementScheduledCount(std::addressof(cur_thread));
 
             // If the next thread is different, we have an update to perform.
@@ -413,15 +443,13 @@ void KScheduler::YieldWithoutCoreMigration() {
     }
 }
 
-void KScheduler::YieldWithCoreMigration() {
+void KScheduler::YieldWithCoreMigration(KernelCore& kernel) {
-    auto& kernel = system.Kernel();
-
     // Validate preconditions.
     ASSERT(CanSchedule(kernel));
     ASSERT(kernel.CurrentProcess() != nullptr);
 
     // Get the current thread and process.
-    Thread& cur_thread = *GetCurrentThread();
+    KThread& cur_thread = Kernel::GetCurrentThread(kernel);
     Process& cur_process = *kernel.CurrentProcess();
 
     // If the thread's yield count matches, there's nothing for us to do.
@@ -442,17 +470,17 @@ void KScheduler::YieldWithCoreMigration() {
             const s32 core_id = cur_thread.GetActiveCore();
 
             // Put the current thread at the back of the queue.
-            Thread* next_thread = priority_queue.MoveToScheduledBack(std::addressof(cur_thread));
+            KThread* next_thread = priority_queue.MoveToScheduledBack(std::addressof(cur_thread));
             IncrementScheduledCount(std::addressof(cur_thread));
 
             // While we have a suggested thread, try to migrate it!
             bool recheck = false;
-            Thread* suggested = priority_queue.GetSuggestedFront(core_id);
+            KThread* suggested = priority_queue.GetSuggestedFront(core_id);
             while (suggested != nullptr) {
                 // Check if the suggested thread is the thread running on its core.
                 const s32 suggested_core = suggested->GetActiveCore();
 
-                if (Thread* running_on_suggested_core =
+                if (KThread* running_on_suggested_core =
                         (suggested_core >= 0)
                             ? kernel.Scheduler(suggested_core).state.highest_priority_thread
                             : nullptr;
@@ -503,15 +531,13 @@ void KScheduler::YieldWithCoreMigration() {
     }
 }
 
-void KScheduler::YieldToAnyThread() {
+void KScheduler::YieldToAnyThread(KernelCore& kernel) {
-    auto& kernel = system.Kernel();
-
     // Validate preconditions.
     ASSERT(CanSchedule(kernel));
     ASSERT(kernel.CurrentProcess() != nullptr);
 
     // Get the current thread and process.
-    Thread& cur_thread = *GetCurrentThread();
+    KThread& cur_thread = Kernel::GetCurrentThread(kernel);
     Process& cur_process = *kernel.CurrentProcess();
 
     // If the thread's yield count matches, there's nothing for us to do.
@@ -539,11 +565,11 @@ void KScheduler::YieldToAnyThread() {
             // If there's nothing scheduled, we can try to perform a migration.
             if (priority_queue.GetScheduledFront(core_id) == nullptr) {
                 // While we have a suggested thread, try to migrate it!
-                Thread* suggested = priority_queue.GetSuggestedFront(core_id);
+                KThread* suggested = priority_queue.GetSuggestedFront(core_id);
                 while (suggested != nullptr) {
                     // Check if the suggested thread is the top thread on its core.
                     const s32 suggested_core = suggested->GetActiveCore();
-                    if (Thread* top_on_suggested_core =
+                    if (KThread* top_on_suggested_core =
                             (suggested_core >= 0) ? priority_queue.GetScheduledFront(suggested_core)
                                                   : nullptr;
                         top_on_suggested_core != suggested) {
@@ -581,22 +607,21 @@ void KScheduler::YieldToAnyThread() {
     }
 }
 
-KScheduler::KScheduler(Core::System& system, std::size_t core_id)
+KScheduler::KScheduler(Core::System& system, s32 core_id) : system(system), core_id(core_id) {
-    : system(system), core_id(core_id) {
     switch_fiber = std::make_shared<Common::Fiber>(OnSwitch, this);
-    this->state.needs_scheduling = true;
+    state.needs_scheduling.store(true);
-    this->state.interrupt_task_thread_runnable = false;
+    state.interrupt_task_thread_runnable = false;
-    this->state.should_count_idle = false;
+    state.should_count_idle = false;
-    this->state.idle_count = 0;
+    state.idle_count = 0;
-    this->state.idle_thread_stack = nullptr;
+    state.idle_thread_stack = nullptr;
-    this->state.highest_priority_thread = nullptr;
+    state.highest_priority_thread = nullptr;
 }
 
 KScheduler::~KScheduler() = default;
 
-Thread* KScheduler::GetCurrentThread() const {
+KThread* KScheduler::GetCurrentThread() const {
-    if (current_thread) {
+    if (auto result = current_thread.load(); result) {
-        return current_thread;
+        return result;
     }
     return idle_thread;
 }
@@ -613,7 +638,7 @@ void KScheduler::RescheduleCurrentCore() {
         phys_core.ClearInterrupt();
     }
     guard.lock();
-    if (this->state.needs_scheduling) {
+    if (state.needs_scheduling.load()) {
         Schedule();
     } else {
         guard.unlock();
@@ -624,66 +649,76 @@ void KScheduler::OnThreadStart() {
     SwitchContextStep2();
 }
 
-void KScheduler::Unload(Thread* thread) {
+void KScheduler::Unload(KThread* thread) {
+    LOG_TRACE(Kernel, "core {}, unload thread {}", core_id, thread ? thread->GetName() : "nullptr");
+
     if (thread) {
-        thread->SetIsRunning(false);
+        if (thread->IsCallingSvc()) {
-        if (thread->IsContinuousOnSVC() && !thread->IsHLEThread()) {
             system.ArmInterface(core_id).ExceptionalExit();
-            thread->SetContinuousOnSVC(false);
+            thread->ClearIsCallingSvc();
         }
-        if (!thread->IsHLEThread() && !thread->HasExited()) {
+        if (!thread->IsTerminationRequested()) {
+            prev_thread = thread;
+
             Core::ARM_Interface& cpu_core = system.ArmInterface(core_id);
             cpu_core.SaveContext(thread->GetContext32());
             cpu_core.SaveContext(thread->GetContext64());
             // Save the TPIDR_EL0 system register in case it was modified.
             thread->SetTPIDR_EL0(cpu_core.GetTPIDR_EL0());
             cpu_core.ClearExclusiveState();
+        } else {
+            prev_thread = nullptr;
         }
         thread->context_guard.unlock();
     }
 }
 
-void KScheduler::Reload(Thread* thread) {
+void KScheduler::Reload(KThread* thread) {
+    LOG_TRACE(Kernel, "core {}, reload thread {}", core_id, thread ? thread->GetName() : "nullptr");
+
     if (thread) {
         ASSERT_MSG(thread->GetState() == ThreadState::Runnable, "Thread must be runnable.");
 
-        // Cancel any outstanding wakeup events for this thread
-        thread->SetIsRunning(true);
-        thread->SetWasRunning(false);
-
         auto* const thread_owner_process = thread->GetOwnerProcess();
         if (thread_owner_process != nullptr) {
             system.Kernel().MakeCurrentProcess(thread_owner_process);
         }
-        if (!thread->IsHLEThread()) {
+
-            Core::ARM_Interface& cpu_core = system.ArmInterface(core_id);
+        Core::ARM_Interface& cpu_core = system.ArmInterface(core_id);
-            cpu_core.LoadContext(thread->GetContext32());
+        cpu_core.LoadContext(thread->GetContext32());
-            cpu_core.LoadContext(thread->GetContext64());
+        cpu_core.LoadContext(thread->GetContext64());
-            cpu_core.SetTlsAddress(thread->GetTLSAddress());
+        cpu_core.SetTlsAddress(thread->GetTLSAddress());
-            cpu_core.SetTPIDR_EL0(thread->GetTPIDR_EL0());
+        cpu_core.SetTPIDR_EL0(thread->GetTPIDR_EL0());
-            cpu_core.ClearExclusiveState();
+        cpu_core.ClearExclusiveState();
-        }
     }
 }
 
 void KScheduler::SwitchContextStep2() {
     // Load context of new thread
-    Reload(current_thread);
+    Reload(current_thread.load());
 
     RescheduleCurrentCore();
 }
 
 void KScheduler::ScheduleImpl() {
-    Thread* previous_thread = current_thread;
+    KThread* previous_thread = current_thread.load();
-    current_thread = state.highest_priority_thread;
+    KThread* next_thread = state.highest_priority_thread;
 
-    this->state.needs_scheduling = false;
+    state.needs_scheduling = false;
 
-    if (current_thread == previous_thread) {
+    // We never want to schedule a null thread, so use the idle thread if we don't have a next.
+    if (next_thread == nullptr) {
+        next_thread = idle_thread;
+    }
+
+    // If we're not actually switching thread, there's nothing to do.
+    if (next_thread == current_thread.load()) {
         guard.unlock();
         return;
     }
 
+    current_thread.store(next_thread);
+
     Process* const previous_process = system.Kernel().CurrentProcess();
 
     UpdateLastContextSwitchTime(previous_thread, previous_process);
@@ -714,28 +749,29 @@ void KScheduler::SwitchToCurrent() {
     while (true) {
         {
             std::scoped_lock lock{guard};
-            current_thread = state.highest_priority_thread;
+            current_thread.store(state.highest_priority_thread);
-            this->state.needs_scheduling = false;
+            state.needs_scheduling.store(false);
         }
         const auto is_switch_pending = [this] {
             std::scoped_lock lock{guard};
-            return state.needs_scheduling.load(std::memory_order_relaxed);
+            return state.needs_scheduling.load();
         };
         do {
-            if (current_thread != nullptr && !current_thread->IsHLEThread()) {
+            auto next_thread = current_thread.load();
-                current_thread->context_guard.lock();
+            if (next_thread != nullptr) {
-                if (current_thread->GetRawState() != ThreadState::Runnable) {
+                next_thread->context_guard.lock();
-                    current_thread->context_guard.unlock();
+                if (next_thread->GetRawState() != ThreadState::Runnable) {
+                    next_thread->context_guard.unlock();
                     break;
                 }
-                if (static_cast<u32>(current_thread->GetProcessorID()) != core_id) {
+                if (next_thread->GetActiveCore() != core_id) {
-                    current_thread->context_guard.unlock();
+                    next_thread->context_guard.unlock();
                     break;
                 }
             }
             std::shared_ptr<Common::Fiber>* next_context;
-            if (current_thread != nullptr) {
+            if (next_thread != nullptr) {
-                next_context = &current_thread->GetHostContext();
+                next_context = &next_thread->GetHostContext();
             } else {
                 next_context = &idle_thread->GetHostContext();
             }
@@ -744,13 +780,13 @@ void KScheduler::SwitchToCurrent() {
     }
 }
 
-void KScheduler::UpdateLastContextSwitchTime(Thread* thread, Process* process) {
+void KScheduler::UpdateLastContextSwitchTime(KThread* thread, Process* process) {
     const u64 prev_switch_ticks = last_context_switch_time;
     const u64 most_recent_switch_ticks = system.CoreTiming().GetCPUTicks();
     const u64 update_ticks = most_recent_switch_ticks - prev_switch_ticks;
 
     if (thread != nullptr) {
-        thread->UpdateCPUTimeTicks(update_ticks);
+        thread->AddCpuTime(core_id, update_ticks);
     }
 
     if (process != nullptr) {
@@ -764,15 +800,10 @@ void KScheduler::Initialize() {
     std::string name = "Idle Thread Id:" + std::to_string(core_id);
     std::function<void(void*)> init_func = Core::CpuManager::GetIdleThreadStartFunc();
     void* init_func_parameter = system.GetCpuManager().GetStartFuncParamater();
-    ThreadType type = static_cast<ThreadType>(THREADTYPE_KERNEL | THREADTYPE_HLE | THREADTYPE_IDLE);
+    auto thread_res = KThread::Create(system, ThreadType::Main, name, 0,
-    auto thread_res = Thread::Create(system, type, name, 0, 64, 0, static_cast<u32>(core_id), 0,
+                                      KThread::IdleThreadPriority, 0, static_cast<u32>(core_id), 0,
-                                     nullptr, std::move(init_func), init_func_parameter);
+                                      nullptr, std::move(init_func), init_func_parameter);
     idle_thread = thread_res.Unwrap().get();
-
-    {
-        KScopedSchedulerLock lock{system.Kernel()};
-        idle_thread->SetState(ThreadState::Runnable);
-    }
 }
 
 KScopedSchedulerLock::KScopedSchedulerLock(KernelCore& kernel)

src/core/hle/kernel/k_scheduler.h

@@ -29,29 +29,33 @@ namespace Kernel {
 class KernelCore;
 class Process;
 class SchedulerLock;
-class Thread;
+class KThread;
 
 class KScheduler final {
 public:
-    explicit KScheduler(Core::System& system, std::size_t core_id);
+    explicit KScheduler(Core::System& system, s32 core_id);
     ~KScheduler();
 
     /// Reschedules to the next available thread (call after current thread is suspended)
     void RescheduleCurrentCore();
 
     /// Reschedules cores pending reschedule, to be called on EnableScheduling.
-    static void RescheduleCores(KernelCore& kernel, u64 cores_pending_reschedule,
+    static void RescheduleCores(KernelCore& kernel, u64 cores_pending_reschedule);
-                                Core::EmuThreadHandle global_thread);
 
     /// The next two are for SingleCore Only.
     /// Unload current thread before preempting core.
-    void Unload(Thread* thread);
+    void Unload(KThread* thread);
 
     /// Reload current thread after core preemption.
-    void Reload(Thread* thread);
+    void Reload(KThread* thread);
 
     /// Gets the current running thread
-    [[nodiscard]] Thread* GetCurrentThread() const;
+    [[nodiscard]] KThread* GetCurrentThread() const;
+
+    /// Returns true if the scheduler is idle
+    [[nodiscard]] bool IsIdle() const {
+        return GetCurrentThread() == idle_thread;
+    }
 
     /// Gets the timestamp for the last context switch in ticks.
     [[nodiscard]] u64 GetLastContextSwitchTicks() const;
@@ -72,14 +76,14 @@ public:
         return switch_fiber;
     }
 
-    [[nodiscard]] u64 UpdateHighestPriorityThread(Thread* highest_thread);
+    [[nodiscard]] u64 UpdateHighestPriorityThread(KThread* highest_thread);
 
     /**
      * Takes a thread and moves it to the back of the it's priority list.
      *
      * @note This operation can be redundant and no scheduling is changed if marked as so.
      */
-    void YieldWithoutCoreMigration();
+    static void YieldWithoutCoreMigration(KernelCore& kernel);
 
     /**
      * Takes a thread and moves it to the back of the it's priority list.
@@ -88,7 +92,7 @@ public:
      *
      * @note This operation can be redundant and no scheduling is changed if marked as so.
      */
-    void YieldWithCoreMigration();
+    static void YieldWithCoreMigration(KernelCore& kernel);
 
     /**
      * Takes a thread and moves it out of the scheduling queue.
@@ -97,16 +101,18 @@ public:
      *
      * @note This operation can be redundant and no scheduling is changed if marked as so.
      */
-    void YieldToAnyThread();
+    static void YieldToAnyThread(KernelCore& kernel);
+
+    static void ClearPreviousThread(KernelCore& kernel, KThread* thread);
 
     /// Notify the scheduler a thread's status has changed.
-    static void OnThreadStateChanged(KernelCore& kernel, Thread* thread, ThreadState old_state);
+    static void OnThreadStateChanged(KernelCore& kernel, KThread* thread, ThreadState old_state);
 
     /// Notify the scheduler a thread's priority has changed.
-    static void OnThreadPriorityChanged(KernelCore& kernel, Thread* thread, s32 old_priority);
+    static void OnThreadPriorityChanged(KernelCore& kernel, KThread* thread, s32 old_priority);
 
     /// Notify the scheduler a thread's core and/or affinity mask has changed.
-    static void OnThreadAffinityMaskChanged(KernelCore& kernel, Thread* thread,
+    static void OnThreadAffinityMaskChanged(KernelCore& kernel, KThread* thread,
                                             const KAffinityMask& old_affinity, s32 old_core);
 
     static bool CanSchedule(KernelCore& kernel);
@@ -114,8 +120,7 @@ public:
     static void SetSchedulerUpdateNeeded(KernelCore& kernel);
     static void ClearSchedulerUpdateNeeded(KernelCore& kernel);
     static void DisableScheduling(KernelCore& kernel);
-    static void EnableScheduling(KernelCore& kernel, u64 cores_needing_scheduling,
+    static void EnableScheduling(KernelCore& kernel, u64 cores_needing_scheduling);
-                                 Core::EmuThreadHandle global_thread);
     [[nodiscard]] static u64 UpdateHighestPriorityThreads(KernelCore& kernel);
 
 private:
@@ -163,13 +168,15 @@ private:
      * most recent tick count retrieved. No special arithmetic is
      * applied to it.
      */
-    void UpdateLastContextSwitchTime(Thread* thread, Process* process);
+    void UpdateLastContextSwitchTime(KThread* thread, Process* process);
 
     static void OnSwitch(void* this_scheduler);
     void SwitchToCurrent();
 
-    Thread* current_thread{};
+    KThread* prev_thread{};
-    Thread* idle_thread{};
+    std::atomic<KThread*> current_thread{};
+
+    KThread* idle_thread;
 
     std::shared_ptr<Common::Fiber> switch_fiber{};
 
@@ -178,7 +185,7 @@ private:
         bool interrupt_task_thread_runnable{};
         bool should_count_idle{};
         u64 idle_count{};
-        Thread* highest_priority_thread{};
+        KThread* highest_priority_thread{};
         void* idle_thread_stack{};
     };
 
@@ -186,7 +193,7 @@ private:
 
     Core::System& system;
     u64 last_context_switch_time{};
-    const std::size_t core_id;
+    const s32 core_id;
 
     Common::SpinLock guard{};
 };

src/core/hle/kernel/k_scheduler_lock.h

@@ -10,6 +10,7 @@
 #include "common/assert.h"
 #include "common/spin_lock.h"
 #include "core/hardware_properties.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 
 namespace Kernel {
@@ -22,46 +23,45 @@ public:
     explicit KAbstractSchedulerLock(KernelCore& kernel_) : kernel{kernel_} {}
 
     bool IsLockedByCurrentThread() const {
-        return this->owner_thread == kernel.GetCurrentEmuThreadID();
+        return this->owner_thread == GetCurrentThreadPointer(kernel);
     }
 
     void Lock() {
         if (this->IsLockedByCurrentThread()) {
             // If we already own the lock, we can just increment the count.
-            ASSERT(this->lock_count > 0);
+            ASSERT(lock_count > 0);
-            this->lock_count++;
+            lock_count++;
         } else {
             // Otherwise, we want to disable scheduling and acquire the spinlock.
             SchedulerType::DisableScheduling(kernel);
-            this->spin_lock.lock();
+            spin_lock.lock();
 
             // For debug, ensure that our state is valid.
-            ASSERT(this->lock_count == 0);
+            ASSERT(lock_count == 0);
-            ASSERT(this->owner_thread == Core::EmuThreadHandle::InvalidHandle());
+            ASSERT(owner_thread == nullptr);
 
             // Increment count, take ownership.
-            this->lock_count = 1;
+            lock_count = 1;
-            this->owner_thread = kernel.GetCurrentEmuThreadID();
+            owner_thread = GetCurrentThreadPointer(kernel);
         }
     }
 
     void Unlock() {
         ASSERT(this->IsLockedByCurrentThread());
-        ASSERT(this->lock_count > 0);
+        ASSERT(lock_count > 0);
 
         // Release an instance of the lock.
-        if ((--this->lock_count) == 0) {
+        if ((--lock_count) == 0) {
             // We're no longer going to hold the lock. Take note of what cores need scheduling.
             const u64 cores_needing_scheduling =
                 SchedulerType::UpdateHighestPriorityThreads(kernel);
-            Core::EmuThreadHandle leaving_thread = owner_thread;
 
             // Note that we no longer hold the lock, and unlock the spinlock.
-            this->owner_thread = Core::EmuThreadHandle::InvalidHandle();
+            owner_thread = nullptr;
-            this->spin_lock.unlock();
+            spin_lock.unlock();
 
             // Enable scheduling, and perform a rescheduling operation.
-            SchedulerType::EnableScheduling(kernel, cores_needing_scheduling, leaving_thread);
+            SchedulerType::EnableScheduling(kernel, cores_needing_scheduling);
         }
     }
 
@@ -69,7 +69,7 @@ private:
     KernelCore& kernel;
     Common::SpinLock spin_lock{};
     s32 lock_count{};
-    Core::EmuThreadHandle owner_thread{Core::EmuThreadHandle::InvalidHandle()};
+    KThread* owner_thread{};
 };
 
 } // namespace Kernel

src/core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h

@@ -9,27 +9,24 @@
 
 #include "common/common_types.h"
 #include "core/hle/kernel/handle_table.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/time_manager.h"
 
 namespace Kernel {
 
 class KScopedSchedulerLockAndSleep {
 public:
-    explicit KScopedSchedulerLockAndSleep(KernelCore& kernel, Handle& event_handle, Thread* t,
+    explicit KScopedSchedulerLockAndSleep(KernelCore& kernel, KThread* t, s64 timeout)
-                                          s64 timeout)
+        : kernel(kernel), thread(t), timeout_tick(timeout) {
-        : kernel(kernel), event_handle(event_handle), thread(t), timeout_tick(timeout) {
-        event_handle = InvalidHandle;
-
         // Lock the scheduler.
         kernel.GlobalSchedulerContext().scheduler_lock.Lock();
     }
 
     ~KScopedSchedulerLockAndSleep() {
         // Register the sleep.
-        if (this->timeout_tick > 0) {
+        if (timeout_tick > 0) {
-            kernel.TimeManager().ScheduleTimeEvent(event_handle, this->thread, this->timeout_tick);
+            kernel.TimeManager().ScheduleTimeEvent(thread, timeout_tick);
         }
 
         // Unlock the scheduler.
@@ -37,13 +34,12 @@ public:
     }
 
     void CancelSleep() {
-        this->timeout_tick = 0;
+        timeout_tick = 0;
     }
 
 private:
     KernelCore& kernel;
-    Handle& event_handle;
+    KThread* thread{};
-    Thread* thread{};
     s64 timeout_tick{};
 };
 

src/core/hle/kernel/k_synchronization_object.cpp

@@ -7,9 +7,9 @@
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
 #include "core/hle/kernel/k_synchronization_object.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/svc_results.h"
-#include "core/hle/kernel/thread.h"
 
 namespace Kernel {
 
@@ -20,12 +20,11 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel, s32* out_index,
     std::vector<ThreadListNode> thread_nodes(num_objects);
 
     // Prepare for wait.
-    Thread* thread = kernel.CurrentScheduler()->GetCurrentThread();
+    KThread* thread = kernel.CurrentScheduler()->GetCurrentThread();
-    Handle timer = InvalidHandle;
 
     {
         // Setup the scheduling lock and sleep.
-        KScopedSchedulerLockAndSleep slp(kernel, timer, thread, timeout);
+        KScopedSchedulerLockAndSleep slp{kernel, thread, timeout};
 
         // Check if any of the objects are already signaled.
         for (auto i = 0; i < num_objects; ++i) {
@@ -90,10 +89,7 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel, s32* out_index,
     thread->SetWaitObjectsForDebugging({});
 
     // Cancel the timer as needed.
-    if (timer != InvalidHandle) {
+    kernel.TimeManager().UnscheduleTimeEvent(thread);
-        auto& time_manager = kernel.TimeManager();
-        time_manager.UnscheduleTimeEvent(timer);
-    }
 
     // Get the wait result.
     ResultCode wait_result{RESULT_SUCCESS};
@@ -136,7 +132,7 @@ ResultCode KSynchronizationObject::Wait(KernelCore& kernel, s32* out_index,
 
 KSynchronizationObject::KSynchronizationObject(KernelCore& kernel) : Object{kernel} {}
 
-KSynchronizationObject ::~KSynchronizationObject() = default;
+KSynchronizationObject::~KSynchronizationObject() = default;
 
 void KSynchronizationObject::NotifyAvailable(ResultCode result) {
     KScopedSchedulerLock lock(kernel);
@@ -148,7 +144,7 @@ void KSynchronizationObject::NotifyAvailable(ResultCode result) {
 
     // Iterate over each thread.
     for (auto* cur_node = thread_list_head; cur_node != nullptr; cur_node = cur_node->next) {
-        Thread* thread = cur_node->thread;
+        KThread* thread = cur_node->thread;
         if (thread->GetState() == ThreadState::Waiting) {
             thread->SetSyncedObject(this, result);
             thread->SetState(ThreadState::Runnable);
@@ -156,8 +152,8 @@ void KSynchronizationObject::NotifyAvailable(ResultCode result) {
     }
 }
 
-std::vector<Thread*> KSynchronizationObject::GetWaitingThreadsForDebugging() const {
+std::vector<KThread*> KSynchronizationObject::GetWaitingThreadsForDebugging() const {
-    std::vector<Thread*> threads;
+    std::vector<KThread*> threads;
 
     // If debugging, dump the list of waiters.
     {

src/core/hle/kernel/k_synchronization_object.h

@@ -13,14 +13,14 @@ namespace Kernel {
 
 class KernelCore;
 class Synchronization;
-class Thread;
+class KThread;
 
 /// Class that represents a Kernel object that a thread can be waiting on
 class KSynchronizationObject : public Object {
 public:
     struct ThreadListNode {
         ThreadListNode* next{};
-        Thread* thread{};
+        KThread* thread{};
     };
 
     [[nodiscard]] static ResultCode Wait(KernelCore& kernel, s32* out_index,
@@ -29,7 +29,7 @@ public:
 
     [[nodiscard]] virtual bool IsSignaled() const = 0;
 
-    [[nodiscard]] std::vector<Thread*> GetWaitingThreadsForDebugging() const;
+    [[nodiscard]] std::vector<KThread*> GetWaitingThreadsForDebugging() const;
 
 protected:
     explicit KSynchronizationObject(KernelCore& kernel);

src/core/hle/kernel/k_thread.cpp

@@ -1015,9 +1015,11 @@ ResultVal<std::shared_ptr<KThread>> KThread::Create(Core::System& system, Thread
 
     std::shared_ptr<KThread> thread = std::make_shared<KThread>(kernel);
 
-    if (const auto result = thread->InitializeThread(thread.get(), entry_point, arg, stack_top, priority, processor_id,
+    if (const auto result =
-       owner_process, type_flags); result.IsError()) {
+            thread->InitializeThread(thread.get(), entry_point, arg, stack_top, priority,
-       return result;
+                                     processor_id, owner_process, type_flags);
+        result.IsError()) {
+        return result;
     }
 
     thread->name = name;
@@ -1032,11 +1034,7 @@ ResultVal<std::shared_ptr<KThread>> KThread::Create(Core::System& system, Thread
 }
 
 KThread* GetCurrentThreadPointer(KernelCore& kernel) {
-    if (!kernel.CurrentScheduler()) {
+    return kernel.GetCurrentEmuThread();
-        // We are not called from a core thread
-        return {};
-    }
-    return kernel.CurrentScheduler()->GetCurrentThread();
 }
 
 KThread& GetCurrentThread(KernelCore& kernel) {

src/core/hle/kernel/k_thread_queue.h

@@ -10,7 +10,7 @@ namespace Kernel {
 
 class KThreadQueue {
 public:
-    KThreadQueue(KernelCore& kernel) : kernel{kernel}, wait_list{} {}
+    explicit KThreadQueue(KernelCore& kernel) : kernel{kernel} {}
 
     bool IsEmpty() const {
         return wait_list.empty();
@@ -75,7 +75,7 @@ public:
 
 private:
     KernelCore& kernel;
-    KThread::WaiterList wait_list;
+    KThread::WaiterList wait_list{};
 };
 
 } // namespace Kernel

src/core/hle/kernel/kernel.cpp

@@ -29,6 +29,7 @@
 #include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/memory/memory_layout.h"
 #include "core/hle/kernel/memory/memory_manager.h"
@@ -38,7 +39,6 @@
 #include "core/hle/kernel/resource_limit.h"
 #include "core/hle/kernel/service_thread.h"
 #include "core/hle/kernel/shared_memory.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/time_manager.h"
 #include "core/hle/lock.h"
 #include "core/hle/result.h"
@@ -57,11 +57,13 @@ struct KernelCore::Impl {
     }
 
     void Initialize(KernelCore& kernel) {
+        global_scheduler_context = std::make_unique<Kernel::GlobalSchedulerContext>(kernel);
+
         RegisterHostThread();
 
-        global_scheduler_context = std::make_unique<Kernel::GlobalSchedulerContext>(kernel);
         service_thread_manager =
             std::make_unique<Common::ThreadWorker>(1, "yuzu:ServiceThreadManager");
+        is_phantom_mode_for_singlecore = false;
 
         InitializePhysicalCores();
         InitializeSystemResourceLimit(kernel);
@@ -116,14 +118,14 @@ struct KernelCore::Impl {
     void InitializePhysicalCores() {
         exclusive_monitor =
             Core::MakeExclusiveMonitor(system.Memory(), Core::Hardware::NUM_CPU_CORES);
-        for (std::size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
+        for (u32 i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
             schedulers[i] = std::make_unique<Kernel::KScheduler>(system, i);
             cores.emplace_back(i, system, *schedulers[i], interrupts);
         }
     }
 
     void InitializeSchedulers() {
-        for (std::size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
+        for (u32 i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
             cores[i].Scheduler().Initialize();
         }
     }
@@ -168,11 +170,9 @@ struct KernelCore::Impl {
             std::string name = "Suspend Thread Id:" + std::to_string(i);
             std::function<void(void*)> init_func = Core::CpuManager::GetSuspendThreadStartFunc();
             void* init_func_parameter = system.GetCpuManager().GetStartFuncParamater();
-            const auto type =
+            auto thread_res = KThread::Create(system, ThreadType::HighPriority, std::move(name), 0,
-                static_cast<ThreadType>(THREADTYPE_KERNEL | THREADTYPE_HLE | THREADTYPE_SUSPEND);
+                                              0, 0, static_cast<u32>(i), 0, nullptr,
-            auto thread_res =
+                                              std::move(init_func), init_func_parameter);
-                Thread::Create(system, type, std::move(name), 0, 0, 0, static_cast<u32>(i), 0,
-                               nullptr, std::move(init_func), init_func_parameter);
 
             suspend_threads[i] = std::move(thread_res).Unwrap();
         }
@@ -207,6 +207,18 @@ struct KernelCore::Impl {
         return host_thread_id;
     }
 
+    // Gets the dummy KThread for the caller, allocating a new one if this is the first time
+    KThread* GetHostDummyThread() {
+        const thread_local auto thread =
+            KThread::Create(
+                Core::System::GetInstance(), ThreadType::Main,
+                std::string{"DummyThread:" + GetHostThreadId()}, 0, KThread::DefaultThreadPriority,
+                0, static_cast<u32>(3), 0, nullptr,
+                []([[maybe_unused]] void* arg) { UNREACHABLE(); }, nullptr)
+                .Unwrap();
+        return thread.get();
+    }
+
     /// Registers a CPU core thread by allocating a host thread ID for it
     void RegisterCoreThread(std::size_t core_id) {
         ASSERT(core_id < Core::Hardware::NUM_CPU_CORES);
@@ -219,6 +231,7 @@ struct KernelCore::Impl {
     /// Registers a new host thread by allocating a host thread ID for it
     void RegisterHostThread() {
         [[maybe_unused]] const auto this_id = GetHostThreadId();
+        [[maybe_unused]] const auto dummy_thread = GetHostDummyThread();
     }
 
     [[nodiscard]] u32 GetCurrentHostThreadID() {
@@ -229,20 +242,21 @@ struct KernelCore::Impl {
         return this_id;
     }
 
-    [[nodiscard]] Core::EmuThreadHandle GetCurrentEmuThreadID() {
+    bool IsPhantomModeForSingleCore() const {
-        Core::EmuThreadHandle result = Core::EmuThreadHandle::InvalidHandle();
+        return is_phantom_mode_for_singlecore;
-        result.host_handle = GetCurrentHostThreadID();
+    }
-        if (result.host_handle >= Core::Hardware::NUM_CPU_CORES) {
+
-            return result;
+    void SetIsPhantomModeForSingleCore(bool value) {
+        ASSERT(!is_multicore);
+        is_phantom_mode_for_singlecore = value;
+    }
+
+    KThread* GetCurrentEmuThread() {
+        const auto thread_id = GetCurrentHostThreadID();
+        if (thread_id >= Core::Hardware::NUM_CPU_CORES) {
+            return GetHostDummyThread();
         }
-        const Kernel::KScheduler& sched = cores[result.host_handle].Scheduler();
+        return schedulers[thread_id]->GetCurrentThread();
-        const Kernel::Thread* current = sched.GetCurrentThread();
-        if (current != nullptr && !current->IsPhantomMode()) {
-            result.guest_handle = current->GetGlobalHandle();
-        } else {
-            result.guest_handle = InvalidHandle;
-        }
-        return result;
     }
 
     void InitializeMemoryLayout() {
@@ -258,7 +272,7 @@ struct KernelCore::Impl {
         constexpr PAddr time_addr{layout.System().StartAddress() + hid_size + font_size + irs_size};
 
         // Initialize memory manager
-        memory_manager = std::make_unique<Memory::MemoryManager>();
+        memory_manager = std::make_unique<Memory::MemoryManager>(system.Kernel());
         memory_manager->InitializeManager(Memory::MemoryManager::Pool::Application,
                                           layout.Application().StartAddress(),
                                           layout.Application().EndAddress());
@@ -342,11 +356,12 @@ struct KernelCore::Impl {
     // the release of itself
     std::unique_ptr<Common::ThreadWorker> service_thread_manager;
 
-    std::array<std::shared_ptr<Thread>, Core::Hardware::NUM_CPU_CORES> suspend_threads{};
+    std::array<std::shared_ptr<KThread>, Core::Hardware::NUM_CPU_CORES> suspend_threads{};
     std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES> interrupts{};
     std::array<std::unique_ptr<Kernel::KScheduler>, Core::Hardware::NUM_CPU_CORES> schedulers{};
 
     bool is_multicore{};
+    bool is_phantom_mode_for_singlecore{};
     u32 single_core_thread_id{};
 
     std::array<u64, Core::Hardware::NUM_CPU_CORES> svc_ticks{};
@@ -380,8 +395,8 @@ std::shared_ptr<ResourceLimit> KernelCore::GetSystemResourceLimit() const {
     return impl->system_resource_limit;
 }
 
-std::shared_ptr<Thread> KernelCore::RetrieveThreadFromGlobalHandleTable(Handle handle) const {
+std::shared_ptr<KThread> KernelCore::RetrieveThreadFromGlobalHandleTable(Handle handle) const {
-    return impl->global_handle_table.Get<Thread>(handle);
+    return impl->global_handle_table.Get<KThread>(handle);
 }
 
 void KernelCore::AppendNewProcess(std::shared_ptr<Process> process) {
@@ -546,8 +561,8 @@ u32 KernelCore::GetCurrentHostThreadID() const {
     return impl->GetCurrentHostThreadID();
 }
 
-Core::EmuThreadHandle KernelCore::GetCurrentEmuThreadID() const {
+KThread* KernelCore::GetCurrentEmuThread() const {
-    return impl->GetCurrentEmuThreadID();
+    return impl->GetCurrentEmuThread();
 }
 
 Memory::MemoryManager& KernelCore::MemoryManager() {
@@ -645,4 +660,12 @@ void KernelCore::ReleaseServiceThread(std::weak_ptr<Kernel::ServiceThread> servi
     });
 }
 
+bool KernelCore::IsPhantomModeForSingleCore() const {
+    return impl->IsPhantomModeForSingleCore();
+}
+
+void KernelCore::SetIsPhantomModeForSingleCore(bool value) {
+    impl->SetIsPhantomModeForSingleCore(value);
+}
+
 } // namespace Kernel

src/core/hle/kernel/kernel.h

@@ -43,9 +43,13 @@ class KScheduler;
 class SharedMemory;
 class ServiceThread;
 class Synchronization;
-class Thread;
+class KThread;
 class TimeManager;
 
+using EmuThreadHandle = uintptr_t;
+constexpr EmuThreadHandle EmuThreadHandleInvalid{};
+constexpr EmuThreadHandle EmuThreadHandleReserved{1ULL << 63};
+
 /// Represents a single instance of the kernel.
 class KernelCore {
 private:
@@ -84,7 +88,7 @@ public:
     std::shared_ptr<ResourceLimit> GetSystemResourceLimit() const;
 
     /// Retrieves a shared pointer to a Thread instance within the thread wakeup handle table.
-    std::shared_ptr<Thread> RetrieveThreadFromGlobalHandleTable(Handle handle) const;
+    std::shared_ptr<KThread> RetrieveThreadFromGlobalHandleTable(Handle handle) const;
 
     /// Adds the given shared pointer to an internal list of active processes.
     void AppendNewProcess(std::shared_ptr<Process> process);
@@ -161,8 +165,8 @@ public:
     /// Determines whether or not the given port is a valid named port.
     bool IsValidNamedPort(NamedPortTable::const_iterator port) const;
 
-    /// Gets the current host_thread/guest_thread handle.
+    /// Gets the current host_thread/guest_thread pointer.
-    Core::EmuThreadHandle GetCurrentEmuThreadID() const;
+    KThread* GetCurrentEmuThread() const;
 
     /// Gets the current host_thread handle.
     u32 GetCurrentHostThreadID() const;
@@ -237,10 +241,14 @@ public:
      */
     void ReleaseServiceThread(std::weak_ptr<Kernel::ServiceThread> service_thread);
 
+    /// Workaround for single-core mode when preempting threads while idle.
+    bool IsPhantomModeForSingleCore() const;
+    void SetIsPhantomModeForSingleCore(bool value);
+
 private:
     friend class Object;
     friend class Process;
-    friend class Thread;
+    friend class KThread;
 
     /// Creates a new object ID, incrementing the internal object ID counter.
     u32 CreateNewObjectID();

src/core/hle/kernel/memory/memory_manager.cpp

@@ -41,6 +41,9 @@ std::size_t MemoryManager::Impl::Initialize(Pool new_pool, u64 start_address, u6
     return total_metadata_size;
 }
 
+MemoryManager::MemoryManager(KernelCore& kernel)
+    : pool_lock_0{kernel}, pool_lock_1{kernel}, pool_lock_2{kernel}, pool_lock_3{kernel} {}
+
 void MemoryManager::InitializeManager(Pool pool, u64 start_address, u64 end_address) {
     ASSERT(pool < Pool::Count);
     managers[static_cast<std::size_t>(pool)].Initialize(pool, start_address, end_address);
@@ -55,7 +58,7 @@ VAddr MemoryManager::AllocateContinuous(std::size_t num_pages, std::size_t align
 
     // Lock the pool that we're allocating from
     const auto pool_index{static_cast<std::size_t>(pool)};
-    std::lock_guard lock{pool_locks[pool_index]};
+    KScopedLightLock lk{PoolLock(pool_index)};
 
     // Choose a heap based on our page size request
     const s32 heap_index{PageHeap::GetAlignedBlockIndex(num_pages, align_pages)};
@@ -90,7 +93,7 @@ ResultCode MemoryManager::Allocate(PageLinkedList& page_list, std::size_t num_pa
 
     // Lock the pool that we're allocating from
     const auto pool_index{static_cast<std::size_t>(pool)};
-    std::lock_guard lock{pool_locks[pool_index]};
+    KScopedLightLock lk{PoolLock(pool_index)};
 
     // Choose a heap based on our page size request
     const s32 heap_index{PageHeap::GetBlockIndex(num_pages)};
@@ -157,7 +160,7 @@ ResultCode MemoryManager::Free(PageLinkedList& page_list, std::size_t num_pages,
 
     // Lock the pool that we're freeing from
     const auto pool_index{static_cast<std::size_t>(pool)};
-    std::lock_guard lock{pool_locks[pool_index]};
+    KScopedLightLock lk{PoolLock(pool_index)};
 
     // TODO (bunnei): Support multiple managers
     Impl& chosen_manager{managers[pool_index]};

src/core/hle/kernel/memory/memory_manager.h

@@ -7,10 +7,16 @@
 #include <array>
 #include <mutex>
 
+#include "common/assert.h"
 #include "common/common_types.h"
+#include "core/hle/kernel/k_light_lock.h"
 #include "core/hle/kernel/memory/page_heap.h"
 #include "core/hle/result.h"
 
+namespace Kernel {
+class KernelCore;
+}
+
 namespace Kernel::Memory {
 
 class PageLinkedList;
@@ -37,7 +43,7 @@ public:
         Mask = (0xF << Shift),
     };
 
-    MemoryManager() = default;
+    MemoryManager(KernelCore& kernel);
 
     constexpr std::size_t GetSize(Pool pool) const {
         return managers[static_cast<std::size_t>(pool)].GetSize();
@@ -89,7 +95,24 @@ private:
     };
 
 private:
-    std::array<std::mutex, static_cast<std::size_t>(Pool::Count)> pool_locks;
+    KLightLock pool_lock_0;
+    KLightLock pool_lock_1;
+    KLightLock pool_lock_2;
+    KLightLock pool_lock_3;
+
+    KLightLock& PoolLock(std::size_t index) {
+        switch (index) {
+        case 0:
+            return pool_lock_0;
+        case 1:
+            return pool_lock_1;
+        case 2:
+            return pool_lock_2;
+        }
+        ASSERT(index == 3);
+        return pool_lock_3;
+    }
+
     std::array<Impl, MaxManagerCount> managers;
 };
 

src/core/hle/kernel/memory/page_table.cpp

@@ -57,7 +57,7 @@ constexpr std::size_t GetSizeInRange(const MemoryInfo& info, VAddr start, VAddr
 
 } // namespace
 
-PageTable::PageTable(Core::System& system) : system{system} {}
+PageTable::PageTable(Core::System& system) : general_lock{system.Kernel()}, system{system} {}
 
 ResultCode PageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_type,
                                            bool enable_aslr, VAddr code_addr, std::size_t code_size,
@@ -272,7 +272,7 @@ ResultCode PageTable::InitializeForProcess(FileSys::ProgramAddressSpaceType as_t
 
 ResultCode PageTable::MapProcessCode(VAddr addr, std::size_t num_pages, MemoryState state,
                                      MemoryPermission perm) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     const u64 size{num_pages * PageSize};
 
@@ -295,7 +295,7 @@ ResultCode PageTable::MapProcessCode(VAddr addr, std::size_t num_pages, MemorySt
 }
 
 ResultCode PageTable::MapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     const std::size_t num_pages{size / PageSize};
 
@@ -332,7 +332,7 @@ ResultCode PageTable::MapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::
 }
 
 ResultCode PageTable::UnmapProcessCodeMemory(VAddr dst_addr, VAddr src_addr, std::size_t size) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     if (!size) {
         return RESULT_SUCCESS;
@@ -394,7 +394,7 @@ void PageTable::MapPhysicalMemory(PageLinkedList& page_linked_list, VAddr start,
 }
 
 ResultCode PageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     std::size_t mapped_size{};
     const VAddr end_addr{addr + size};
@@ -444,7 +444,7 @@ ResultCode PageTable::MapPhysicalMemory(VAddr addr, std::size_t size) {
 }
 
 ResultCode PageTable::UnmapPhysicalMemory(VAddr addr, std::size_t size) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     const VAddr end_addr{addr + size};
     ResultCode result{RESULT_SUCCESS};
@@ -481,7 +481,7 @@ ResultCode PageTable::UnmapPhysicalMemory(VAddr addr, std::size_t size) {
 }
 
 ResultCode PageTable::UnmapMemory(VAddr addr, std::size_t size) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     const VAddr end_addr{addr + size};
     ResultCode result{RESULT_SUCCESS};
@@ -517,7 +517,7 @@ ResultCode PageTable::UnmapMemory(VAddr addr, std::size_t size) {
 }
 
 ResultCode PageTable::Map(VAddr dst_addr, VAddr src_addr, std::size_t size) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     MemoryState src_state{};
     CASCADE_CODE(CheckMemoryState(
@@ -555,7 +555,7 @@ ResultCode PageTable::Map(VAddr dst_addr, VAddr src_addr, std::size_t size) {
 }
 
 ResultCode PageTable::Unmap(VAddr dst_addr, VAddr src_addr, std::size_t size) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     MemoryState src_state{};
     CASCADE_CODE(CheckMemoryState(
@@ -620,7 +620,7 @@ ResultCode PageTable::MapPages(VAddr addr, const PageLinkedList& page_linked_lis
 
 ResultCode PageTable::MapPages(VAddr addr, PageLinkedList& page_linked_list, MemoryState state,
                                MemoryPermission perm) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     const std::size_t num_pages{page_linked_list.GetNumPages()};
     const std::size_t size{num_pages * PageSize};
@@ -642,7 +642,7 @@ ResultCode PageTable::MapPages(VAddr addr, PageLinkedList& page_linked_list, Mem
 
 ResultCode PageTable::SetCodeMemoryPermission(VAddr addr, std::size_t size, MemoryPermission perm) {
 
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     MemoryState prev_state{};
     MemoryPermission prev_perm{};
@@ -688,7 +688,7 @@ ResultCode PageTable::SetCodeMemoryPermission(VAddr addr, std::size_t size, Memo
 }
 
 MemoryInfo PageTable::QueryInfoImpl(VAddr addr) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     return block_manager->FindBlock(addr).GetMemoryInfo();
 }
@@ -703,7 +703,7 @@ MemoryInfo PageTable::QueryInfo(VAddr addr) {
 }
 
 ResultCode PageTable::ReserveTransferMemory(VAddr addr, std::size_t size, MemoryPermission perm) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     MemoryState state{};
     MemoryAttribute attribute{};
@@ -721,7 +721,7 @@ ResultCode PageTable::ReserveTransferMemory(VAddr addr, std::size_t size, Memory
 }
 
 ResultCode PageTable::ResetTransferMemory(VAddr addr, std::size_t size) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     MemoryState state{};
 
@@ -739,7 +739,7 @@ ResultCode PageTable::ResetTransferMemory(VAddr addr, std::size_t size) {
 
 ResultCode PageTable::SetMemoryAttribute(VAddr addr, std::size_t size, MemoryAttribute mask,
                                          MemoryAttribute value) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     MemoryState state{};
     MemoryPermission perm{};
@@ -760,7 +760,7 @@ ResultCode PageTable::SetMemoryAttribute(VAddr addr, std::size_t size, MemoryAtt
 }
 
 ResultCode PageTable::SetHeapCapacity(std::size_t new_heap_capacity) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
     heap_capacity = new_heap_capacity;
     return RESULT_SUCCESS;
 }
@@ -777,7 +777,7 @@ ResultVal<VAddr> PageTable::SetHeapSize(std::size_t size) {
 
     // Increase the heap size
     {
-        std::lock_guard lock{page_table_lock};
+        KScopedLightLock lk{general_lock};
 
         const u64 delta{size - previous_heap_size};
 
@@ -813,7 +813,7 @@ ResultVal<VAddr> PageTable::AllocateAndMapMemory(std::size_t needed_num_pages, s
                                                  bool is_map_only, VAddr region_start,
                                                  std::size_t region_num_pages, MemoryState state,
                                                  MemoryPermission perm, PAddr map_addr) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     if (!CanContain(region_start, region_num_pages * PageSize, state)) {
         return ERR_INVALID_ADDRESS_STATE;
@@ -844,7 +844,7 @@ ResultVal<VAddr> PageTable::AllocateAndMapMemory(std::size_t needed_num_pages, s
 }
 
 ResultCode PageTable::LockForDeviceAddressSpace(VAddr addr, std::size_t size) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     MemoryPermission perm{};
     if (const ResultCode result{CheckMemoryState(
@@ -867,7 +867,7 @@ ResultCode PageTable::LockForDeviceAddressSpace(VAddr addr, std::size_t size) {
 }
 
 ResultCode PageTable::UnlockForDeviceAddressSpace(VAddr addr, std::size_t size) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     MemoryPermission perm{};
     if (const ResultCode result{CheckMemoryState(
@@ -937,7 +937,7 @@ VAddr PageTable::AllocateVirtualMemory(VAddr start, std::size_t region_num_pages
 
 ResultCode PageTable::Operate(VAddr addr, std::size_t num_pages, const PageLinkedList& page_group,
                               OperationType operation) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     ASSERT(Common::IsAligned(addr, PageSize));
     ASSERT(num_pages > 0);
@@ -962,7 +962,7 @@ ResultCode PageTable::Operate(VAddr addr, std::size_t num_pages, const PageLinke
 
 ResultCode PageTable::Operate(VAddr addr, std::size_t num_pages, MemoryPermission perm,
                               OperationType operation, PAddr map_addr) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     ASSERT(num_pages > 0);
     ASSERT(Common::IsAligned(addr, PageSize));
@@ -1123,7 +1123,7 @@ ResultCode PageTable::CheckMemoryState(MemoryState* out_state, MemoryPermission*
                                        MemoryPermission perm_mask, MemoryPermission perm,
                                        MemoryAttribute attr_mask, MemoryAttribute attr,
                                        MemoryAttribute ignore_attr) {
-    std::lock_guard lock{page_table_lock};
+    KScopedLightLock lk{general_lock};
 
     // Get information about the first block
     const VAddr last_addr{addr + size - 1};

src/core/hle/kernel/memory/page_table.h

@@ -111,7 +111,7 @@ private:
                                 perm, attr_mask, attr, ignore_attr);
     }
 
-    std::recursive_mutex page_table_lock;
+    KLightLock general_lock;
     std::unique_ptr<MemoryBlockManager> block_manager;
 
 public:

src/core/hle/kernel/object.h

@@ -61,6 +61,8 @@ public:
      */
     bool IsWaitable() const;
 
+    virtual void Finalize() = 0;
+
 protected:
     /// The kernel instance this object was created under.
     KernelCore& kernel;

src/core/hle/kernel/process.cpp

@@ -16,13 +16,13 @@
 #include "core/hle/kernel/code_set.h"
 #include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/memory/memory_block_manager.h"
 #include "core/hle/kernel/memory/page_table.h"
 #include "core/hle/kernel/memory/slab_heap.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/resource_limit.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/lock.h"
 #include "core/memory.h"
 #include "core/settings.h"
@@ -38,11 +38,10 @@ namespace {
  */
 void SetupMainThread(Core::System& system, Process& owner_process, u32 priority, VAddr stack_top) {
     const VAddr entry_point = owner_process.PageTable().GetCodeRegionStart();
-    ThreadType type = THREADTYPE_USER;
+    auto thread_res = KThread::Create(system, ThreadType::User, "main", entry_point, priority, 0,
-    auto thread_res = Thread::Create(system, type, "main", entry_point, priority, 0,
+                                      owner_process.GetIdealCoreId(), stack_top, &owner_process);
-                                     owner_process.GetIdealCore(), stack_top, &owner_process);
 
-    std::shared_ptr<Thread> thread = std::move(thread_res).Unwrap();
+    std::shared_ptr<KThread> thread = std::move(thread_res).Unwrap();
 
     // Register 1 must be a handle to the main thread
     const Handle thread_handle = owner_process.GetHandleTable().Create(thread).Unwrap();
@@ -137,6 +136,23 @@ std::shared_ptr<ResourceLimit> Process::GetResourceLimit() const {
     return resource_limit;
 }
 
+void Process::IncrementThreadCount() {
+    ASSERT(num_threads >= 0);
+    ++num_created_threads;
+
+    if (const auto count = ++num_threads; count > peak_num_threads) {
+        peak_num_threads = count;
+    }
+}
+
+void Process::DecrementThreadCount() {
+    ASSERT(num_threads > 0);
+
+    if (const auto count = --num_threads; count == 0) {
+        UNIMPLEMENTED_MSG("Process termination is not implemented!");
+    }
+}
+
 u64 Process::GetTotalPhysicalMemoryAvailable() const {
     const u64 capacity{resource_limit->GetCurrentResourceValue(ResourceType::PhysicalMemory) +
                        page_table->GetTotalHeapSize() + GetSystemResourceSize() + image_size +
@@ -162,11 +178,66 @@ u64 Process::GetTotalPhysicalMemoryUsedWithoutSystemResource() const {
     return GetTotalPhysicalMemoryUsed() - GetSystemResourceUsage();
 }
 
-void Process::RegisterThread(const Thread* thread) {
+bool Process::ReleaseUserException(KThread* thread) {
+    KScopedSchedulerLock sl{kernel};
+
+    if (exception_thread == thread) {
+        exception_thread = nullptr;
+
+        // Remove waiter thread.
+        s32 num_waiters{};
+        KThread* next = thread->RemoveWaiterByKey(
+            std::addressof(num_waiters),
+            reinterpret_cast<uintptr_t>(std::addressof(exception_thread)));
+        if (next != nullptr) {
+            if (next->GetState() == ThreadState::Waiting) {
+                next->SetState(ThreadState::Runnable);
+            } else {
+                KScheduler::SetSchedulerUpdateNeeded(kernel);
+            }
+        }
+
+        return true;
+    } else {
+        return false;
+    }
+}
+
+void Process::PinCurrentThread() {
+    ASSERT(kernel.GlobalSchedulerContext().IsLocked());
+
+    // Get the current thread.
+    const s32 core_id = GetCurrentCoreId(kernel);
+    KThread* cur_thread = GetCurrentThreadPointer(kernel);
+
+    // Pin it.
+    PinThread(core_id, cur_thread);
+    cur_thread->Pin();
+
+    // An update is needed.
+    KScheduler::SetSchedulerUpdateNeeded(kernel);
+}
+
+void Process::UnpinCurrentThread() {
+    ASSERT(kernel.GlobalSchedulerContext().IsLocked());
+
+    // Get the current thread.
+    const s32 core_id = GetCurrentCoreId(kernel);
+    KThread* cur_thread = GetCurrentThreadPointer(kernel);
+
+    // Unpin it.
+    cur_thread->Unpin();
+    UnpinThread(core_id, cur_thread);
+
+    // An update is needed.
+    KScheduler::SetSchedulerUpdateNeeded(kernel);
+}
+
+void Process::RegisterThread(const KThread* thread) {
     thread_list.push_back(thread);
 }
 
-void Process::UnregisterThread(const Thread* thread) {
+void Process::UnregisterThread(const KThread* thread) {
     thread_list.remove(thread);
 }
 
@@ -267,7 +338,7 @@ void Process::Run(s32 main_thread_priority, u64 stack_size) {
 void Process::PrepareForTermination() {
     ChangeStatus(ProcessStatus::Exiting);
 
-    const auto stop_threads = [this](const std::vector<std::shared_ptr<Thread>>& thread_list) {
+    const auto stop_threads = [this](const std::vector<std::shared_ptr<KThread>>& thread_list) {
         for (auto& thread : thread_list) {
             if (thread->GetOwnerProcess() != this)
                 continue;
@@ -279,7 +350,7 @@ void Process::PrepareForTermination() {
             ASSERT_MSG(thread->GetState() == ThreadState::Waiting,
                        "Exiting processes with non-waiting threads is currently unimplemented");
 
-            thread->Stop();
+            thread->Exit();
         }
     };
 

src/core/hle/kernel/process.h

@@ -30,7 +30,7 @@ namespace Kernel {
 
 class KernelCore;
 class ResourceLimit;
-class Thread;
+class KThread;
 class TLSPage;
 
 struct CodeSet;
@@ -173,10 +173,15 @@ public:
     std::shared_ptr<ResourceLimit> GetResourceLimit() const;
 
     /// Gets the ideal CPU core ID for this process
-    u8 GetIdealCore() const {
+    u8 GetIdealCoreId() const {
         return ideal_core;
     }
 
+    /// Checks if the specified thread priority is valid.
+    bool CheckThreadPriority(s32 prio) const {
+        return ((1ULL << prio) & GetPriorityMask()) != 0;
+    }
+
     /// Gets the bitmask of allowed cores that this process' threads can run on.
     u64 GetCoreMask() const {
         return capabilities.GetCoreMask();
@@ -212,6 +217,14 @@ public:
         return is_64bit_process;
     }
 
+    [[nodiscard]] bool IsSuspended() const {
+        return is_suspended;
+    }
+
+    void SetSuspended(bool suspended) {
+        is_suspended = suspended;
+    }
+
     /// Gets the total running time of the process instance in ticks.
     u64 GetCPUTimeTicks() const {
         return total_process_running_time_ticks;
@@ -232,6 +245,33 @@ public:
         ++schedule_count;
     }
 
+    void IncrementThreadCount();
+    void DecrementThreadCount();
+
+    void SetRunningThread(s32 core, KThread* thread, u64 idle_count) {
+        running_threads[core] = thread;
+        running_thread_idle_counts[core] = idle_count;
+    }
+
+    void ClearRunningThread(KThread* thread) {
+        for (size_t i = 0; i < running_threads.size(); ++i) {
+            if (running_threads[i] == thread) {
+                running_threads[i] = nullptr;
+            }
+        }
+    }
+
+    [[nodiscard]] KThread* GetRunningThread(s32 core) const {
+        return running_threads[core];
+    }
+
+    bool ReleaseUserException(KThread* thread);
+
+    [[nodiscard]] KThread* GetPinnedThread(s32 core_id) const {
+        ASSERT(0 <= core_id && core_id < static_cast<s32>(Core::Hardware::NUM_CPU_CORES));
+        return pinned_threads[core_id];
+    }
+
     /// Gets 8 bytes of random data for svcGetInfo RandomEntropy
     u64 GetRandomEntropy(std::size_t index) const {
         return random_entropy.at(index);
@@ -252,17 +292,17 @@ public:
     u64 GetTotalPhysicalMemoryUsedWithoutSystemResource() const;
 
     /// Gets the list of all threads created with this process as their owner.
-    const std::list<const Thread*>& GetThreadList() const {
+    const std::list<const KThread*>& GetThreadList() const {
         return thread_list;
     }
 
     /// Registers a thread as being created under this process,
     /// adding it to this process' thread list.
-    void RegisterThread(const Thread* thread);
+    void RegisterThread(const KThread* thread);
 
     /// Unregisters a thread from this process, removing it
     /// from this process' thread list.
-    void UnregisterThread(const Thread* thread);
+    void UnregisterThread(const KThread* thread);
 
     /// Clears the signaled state of the process if and only if it's signaled.
     ///
@@ -303,6 +343,11 @@ public:
 
     bool IsSignaled() const override;
 
+    void Finalize() override {}
+
+    void PinCurrentThread();
+    void UnpinCurrentThread();
+
     ///////////////////////////////////////////////////////////////////////////////////////////////
     // Thread-local storage management
 
@@ -313,6 +358,20 @@ public:
     void FreeTLSRegion(VAddr tls_address);
 
 private:
+    void PinThread(s32 core_id, KThread* thread) {
+        ASSERT(0 <= core_id && core_id < static_cast<s32>(Core::Hardware::NUM_CPU_CORES));
+        ASSERT(thread != nullptr);
+        ASSERT(pinned_threads[core_id] == nullptr);
+        pinned_threads[core_id] = thread;
+    }
+
+    void UnpinThread(s32 core_id, KThread* thread) {
+        ASSERT(0 <= core_id && core_id < static_cast<s32>(Core::Hardware::NUM_CPU_CORES));
+        ASSERT(thread != nullptr);
+        ASSERT(pinned_threads[core_id] == thread);
+        pinned_threads[core_id] = nullptr;
+    }
+
     /// Changes the process status. If the status is different
     /// from the current process status, then this will trigger
     /// a process signal.
@@ -380,7 +439,7 @@ private:
     std::array<u64, RANDOM_ENTROPY_SIZE> random_entropy{};
 
     /// List of threads that are running with this process as their owner.
-    std::list<const Thread*> thread_list;
+    std::list<const KThread*> thread_list;
 
     /// Address of the top of the main thread's stack
     VAddr main_thread_stack_top{};
@@ -401,6 +460,17 @@ private:
     s64 schedule_count{};
 
     bool is_signaled{};
+    bool is_suspended{};
+
+    std::atomic<s32> num_created_threads{};
+    std::atomic<u16> num_threads{};
+    u16 peak_num_threads{};
+
+    std::array<KThread*, Core::Hardware::NUM_CPU_CORES> running_threads{};
+    std::array<u64, Core::Hardware::NUM_CPU_CORES> running_thread_idle_counts{};
+    std::array<KThread*, Core::Hardware::NUM_CPU_CORES> pinned_threads{};
+
+    KThread* exception_thread{};
 
     /// System context
     Core::System& system;

src/core/hle/kernel/readable_event.cpp

@@ -7,10 +7,10 @@
 #include "common/logging/log.h"
 #include "core/hle/kernel/errors.h"
 #include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/object.h"
 #include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/thread.h"
 
 namespace Kernel {
 

src/core/hle/kernel/readable_event.h

@@ -47,6 +47,8 @@ public:
 
     bool IsSignaled() const override;
 
+    void Finalize() override {}
+
 private:
     explicit ReadableEvent(KernelCore& kernel);
 

src/core/hle/kernel/resource_limit.h

@@ -85,6 +85,8 @@ public:
      */
     ResultCode SetLimitValue(ResourceType resource, s64 value);
 
+    void Finalize() override {}
+
 private:
     // TODO(Subv): Increment resource limit current values in their respective Kernel::T::Create
     // functions

src/core/hle/kernel/server_port.cpp

@@ -6,10 +6,10 @@
 #include "common/assert.h"
 #include "core/hle/kernel/client_port.h"
 #include "core/hle/kernel/errors.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/object.h"
 #include "core/hle/kernel/server_port.h"
 #include "core/hle/kernel/server_session.h"
-#include "core/hle/kernel/thread.h"
 
 namespace Kernel {
 

src/core/hle/kernel/server_port.h

@@ -81,6 +81,8 @@ public:
 
     bool IsSignaled() const override;
 
+    void Finalize() override {}
+
 private:
     /// ServerSessions waiting to be accepted by the port
     std::vector<std::shared_ptr<ServerSession>> pending_sessions;

src/core/hle/kernel/server_session.cpp

@@ -15,11 +15,11 @@
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/hle_ipc.h"
 #include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/server_session.h"
 #include "core/hle/kernel/session.h"
-#include "core/hle/kernel/thread.h"
 #include "core/memory.h"
 
 namespace Kernel {
@@ -116,7 +116,7 @@ ResultCode ServerSession::HandleDomainSyncRequest(Kernel::HLERequestContext& con
     return RESULT_SUCCESS;
 }
 
-ResultCode ServerSession::QueueSyncRequest(std::shared_ptr<Thread> thread,
+ResultCode ServerSession::QueueSyncRequest(std::shared_ptr<KThread> thread,
                                            Core::Memory::Memory& memory) {
     u32* cmd_buf{reinterpret_cast<u32*>(memory.GetPointer(thread->GetTLSAddress()))};
     auto context =
@@ -154,14 +154,14 @@ ResultCode ServerSession::CompleteSyncRequest(HLERequestContext& context) {
         KScopedSchedulerLock lock(kernel);
         if (!context.IsThreadWaiting()) {
             context.GetThread().Wakeup();
-            context.GetThread().SetSynchronizationResults(nullptr, result);
+            context.GetThread().SetSyncedObject(nullptr, result);
         }
     }
 
     return result;
 }
 
-ResultCode ServerSession::HandleSyncRequest(std::shared_ptr<Thread> thread,
+ResultCode ServerSession::HandleSyncRequest(std::shared_ptr<KThread> thread,
                                             Core::Memory::Memory& memory,
                                             Core::Timing::CoreTiming& core_timing) {
     return QueueSyncRequest(std::move(thread), memory);

src/core/hle/kernel/server_session.h

@@ -29,7 +29,7 @@ class HLERequestContext;
 class KernelCore;
 class Session;
 class SessionRequestHandler;
-class Thread;
+class KThread;
 
 /**
  * Kernel object representing the server endpoint of an IPC session. Sessions are the basic CTR-OS
@@ -95,7 +95,7 @@ public:
      *
      * @returns ResultCode from the operation.
      */
-    ResultCode HandleSyncRequest(std::shared_ptr<Thread> thread, Core::Memory::Memory& memory,
+    ResultCode HandleSyncRequest(std::shared_ptr<KThread> thread, Core::Memory::Memory& memory,
                                  Core::Timing::CoreTiming& core_timing);
 
     /// Called when a client disconnection occurs.
@@ -126,9 +126,11 @@ public:
 
     bool IsSignaled() const override;
 
+    void Finalize() override {}
+
 private:
     /// Queues a sync request from the emulated application.
-    ResultCode QueueSyncRequest(std::shared_ptr<Thread> thread, Core::Memory::Memory& memory);
+    ResultCode QueueSyncRequest(std::shared_ptr<KThread> thread, Core::Memory::Memory& memory);
 
     /// Completes a sync request from the emulated application.
     ResultCode CompleteSyncRequest(HLERequestContext& context);
@@ -149,12 +151,12 @@ private:
     /// List of threads that are pending a response after a sync request. This list is processed in
     /// a LIFO manner, thus, the last request will be dispatched first.
     /// TODO(Subv): Verify if this is indeed processed in LIFO using a hardware test.
-    std::vector<std::shared_ptr<Thread>> pending_requesting_threads;
+    std::vector<std::shared_ptr<KThread>> pending_requesting_threads;
 
     /// Thread whose request is currently being handled. A request is considered "handled" when a
     /// response is sent via svcReplyAndReceive.
     /// TODO(Subv): Find a better name for this.
-    std::shared_ptr<Thread> currently_handling;
+    std::shared_ptr<KThread> currently_handling;
 
     /// When set to True, converts the session to a domain at the end of the command
     bool convert_to_domain{};

src/core/hle/kernel/session.h

@@ -39,6 +39,8 @@ public:
 
     bool IsSignaled() const override;
 
+    void Finalize() override {}
+
     std::shared_ptr<ClientSession> Client() {
         if (auto result{client.lock()}) {
             return result;

src/core/hle/kernel/shared_memory.h

@@ -71,6 +71,8 @@ public:
         return device_memory.GetPointer(physical_address + offset);
     }
 
+    void Finalize() override {}
+
 private:
     Core::DeviceMemory& device_memory;
     Process* owner_process{};

src/core/hle/kernel/svc.cpp

@@ -29,6 +29,7 @@
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_scoped_scheduler_lock_and_sleep.h"
 #include "core/hle/kernel/k_synchronization_object.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/memory/memory_block.h"
 #include "core/hle/kernel/memory/memory_layout.h"
@@ -42,7 +43,6 @@
 #include "core/hle/kernel/svc_results.h"
 #include "core/hle/kernel/svc_types.h"
 #include "core/hle/kernel/svc_wrap.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/time_manager.h"
 #include "core/hle/kernel/transfer_memory.h"
 #include "core/hle/kernel/writable_event.h"
@@ -351,7 +351,8 @@ static ResultCode SendSyncRequest(Core::System& system, Handle handle) {
         session->SendSyncRequest(SharedFrom(thread), system.Memory(), system.CoreTiming());
     }
 
-    return thread->GetSignalingResult();
+    KSynchronizationObject* dummy{};
+    return thread->GetWaitResult(std::addressof(dummy));
 }
 
 static ResultCode SendSyncRequest32(Core::System& system, Handle handle) {
@@ -359,27 +360,26 @@ static ResultCode SendSyncRequest32(Core::System& system, Handle handle) {
 }
 
 /// Get the ID for the specified thread.
-static ResultCode GetThreadId(Core::System& system, u64* thread_id, Handle thread_handle) {
+static ResultCode GetThreadId(Core::System& system, u64* out_thread_id, Handle thread_handle) {
     LOG_TRACE(Kernel_SVC, "called thread=0x{:08X}", thread_handle);
 
+    // Get the thread from its handle.
     const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
-    const std::shared_ptr<Thread> thread = handle_table.Get<Thread>(thread_handle);
+    const std::shared_ptr<KThread> thread = handle_table.Get<KThread>(thread_handle);
-    if (!thread) {
+    R_UNLESS(thread, Svc::ResultInvalidHandle);
-        LOG_ERROR(Kernel_SVC, "Thread handle does not exist, handle=0x{:08X}", thread_handle);
-        return ERR_INVALID_HANDLE;
-    }
 
-    *thread_id = thread->GetThreadID();
+    // Get the thread's id.
+    *out_thread_id = thread->GetThreadID();
     return RESULT_SUCCESS;
 }
 
-static ResultCode GetThreadId32(Core::System& system, u32* thread_id_low, u32* thread_id_high,
+static ResultCode GetThreadId32(Core::System& system, u32* out_thread_id_low,
-                                Handle thread_handle) {
+                                u32* out_thread_id_high, Handle thread_handle) {
-    u64 thread_id{};
+    u64 out_thread_id{};
-    const ResultCode result{GetThreadId(system, &thread_id, thread_handle)};
+    const ResultCode result{GetThreadId(system, &out_thread_id, thread_handle)};
 
-    *thread_id_low = static_cast<u32>(thread_id >> 32);
+    *out_thread_id_low = static_cast<u32>(out_thread_id >> 32);
-    *thread_id_high = static_cast<u32>(thread_id & std::numeric_limits<u32>::max());
+    *out_thread_id_high = static_cast<u32>(out_thread_id & std::numeric_limits<u32>::max());
 
     return result;
 }
@@ -395,7 +395,7 @@ static ResultCode GetProcessId(Core::System& system, u64* process_id, Handle han
         return RESULT_SUCCESS;
     }
 
-    const std::shared_ptr<Thread> thread = handle_table.Get<Thread>(handle);
+    const std::shared_ptr<KThread> thread = handle_table.Get<KThread>(handle);
     if (thread) {
         const Process* const owner_process = thread->GetOwnerProcess();
         if (!owner_process) {
@@ -473,15 +473,13 @@ static ResultCode WaitSynchronization32(Core::System& system, u32 timeout_low, u
 static ResultCode CancelSynchronization(Core::System& system, Handle thread_handle) {
     LOG_TRACE(Kernel_SVC, "called thread=0x{:X}", thread_handle);
 
+    // Get the thread from its handle.
     const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
-    std::shared_ptr<Thread> thread = handle_table.Get<Thread>(thread_handle);
+    std::shared_ptr<KThread> thread = handle_table.Get<KThread>(thread_handle);
-    if (!thread) {
+    R_UNLESS(thread, Svc::ResultInvalidHandle);
-        LOG_ERROR(Kernel_SVC, "Thread handle does not exist, thread_handle=0x{:08X}",
-                  thread_handle);
-        return ERR_INVALID_HANDLE;
-    }
 
-    thread->CancelWait();
+    // Cancel the thread's wait.
+    thread->WaitCancel();
     return RESULT_SUCCESS;
 }
 
@@ -630,7 +628,7 @@ static void Break(Core::System& system, u32 reason, u64 info1, u64 info2) {
         handle_debug_buffer(info1, info2);
 
         auto* const current_thread = system.Kernel().CurrentScheduler()->GetCurrentThread();
-        const auto thread_processor_id = current_thread->GetProcessorID();
+        const auto thread_processor_id = current_thread->GetActiveCore();
         system.ArmInterface(static_cast<std::size_t>(thread_processor_id)).LogBacktrace();
     }
 }
@@ -872,7 +870,7 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, u64 ha
             return ERR_INVALID_COMBINATION;
         }
 
-        const auto thread = system.Kernel().CurrentProcess()->GetHandleTable().Get<Thread>(
+        const auto thread = system.Kernel().CurrentProcess()->GetHandleTable().Get<KThread>(
             static_cast<Handle>(handle));
         if (!thread) {
             LOG_ERROR(Kernel_SVC, "Thread handle does not exist, handle=0x{:08X}",
@@ -888,7 +886,7 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, u64 ha
         const u64 prev_ctx_ticks = scheduler.GetLastContextSwitchTicks();
         u64 out_ticks = 0;
         if (same_thread && info_sub_id == 0xFFFFFFFFFFFFFFFF) {
-            const u64 thread_ticks = current_thread->GetTotalCPUTimeTicks();
+            const u64 thread_ticks = current_thread->GetCpuTime();
 
             out_ticks = thread_ticks + (core_timing.GetCPUTicks() - prev_ctx_ticks);
         } else if (same_thread && info_sub_id == system.CurrentCoreIndex()) {
@@ -1025,129 +1023,109 @@ static ResultCode UnmapPhysicalMemory32(Core::System& system, u32 addr, u32 size
     return UnmapPhysicalMemory(system, addr, size);
 }
 
-/// Sets the thread activity
+constexpr bool IsValidThreadActivity(Svc::ThreadActivity thread_activity) {
-static ResultCode SetThreadActivity(Core::System& system, Handle handle, u32 activity) {
+    switch (thread_activity) {
-    LOG_DEBUG(Kernel_SVC, "called, handle=0x{:08X}, activity=0x{:08X}", handle, activity);
+    case Svc::ThreadActivity::Runnable:
-    if (activity > static_cast<u32>(ThreadActivity::Paused)) {
+    case Svc::ThreadActivity::Paused:
-        return ERR_INVALID_ENUM_VALUE;
+        return true;
+    default:
+        return false;
     }
-
-    const auto* current_process = system.Kernel().CurrentProcess();
-    const std::shared_ptr<Thread> thread = current_process->GetHandleTable().Get<Thread>(handle);
-    if (!thread) {
-        LOG_ERROR(Kernel_SVC, "Thread handle does not exist, handle=0x{:08X}", handle);
-        return ERR_INVALID_HANDLE;
-    }
-
-    if (thread->GetOwnerProcess() != current_process) {
-        LOG_ERROR(Kernel_SVC,
-                  "The current process does not own the current thread, thread_handle={:08X} "
-                  "thread_pid={}, "
-                  "current_process_pid={}",
-                  handle, thread->GetOwnerProcess()->GetProcessID(),
-                  current_process->GetProcessID());
-        return ERR_INVALID_HANDLE;
-    }
-
-    if (thread.get() == system.Kernel().CurrentScheduler()->GetCurrentThread()) {
-        LOG_ERROR(Kernel_SVC, "The thread handle specified is the current running thread");
-        return ERR_BUSY;
-    }
-
-    return thread->SetActivity(static_cast<ThreadActivity>(activity));
 }
 
-static ResultCode SetThreadActivity32(Core::System& system, Handle handle, u32 activity) {
+/// Sets the thread activity
-    return SetThreadActivity(system, handle, activity);
+static ResultCode SetThreadActivity(Core::System& system, Handle thread_handle,
+                                    Svc::ThreadActivity thread_activity) {
+    LOG_DEBUG(Kernel_SVC, "called, handle=0x{:08X}, activity=0x{:08X}", thread_handle,
+              thread_activity);
+
+    // Validate the activity.
+    R_UNLESS(IsValidThreadActivity(thread_activity), Svc::ResultInvalidEnumValue);
+
+    // Get the thread from its handle.
+    auto& kernel = system.Kernel();
+    const auto& handle_table = kernel.CurrentProcess()->GetHandleTable();
+    const std::shared_ptr<KThread> thread = handle_table.Get<KThread>(thread_handle);
+    R_UNLESS(thread, Svc::ResultInvalidHandle);
+
+    // Check that the activity is being set on a non-current thread for the current process.
+    R_UNLESS(thread->GetOwnerProcess() == kernel.CurrentProcess(), Svc::ResultInvalidHandle);
+    R_UNLESS(thread.get() != GetCurrentThreadPointer(kernel), Svc::ResultBusy);
+
+    // Set the activity.
+    R_TRY(thread->SetActivity(thread_activity));
+
+    return RESULT_SUCCESS;
+}
+
+static ResultCode SetThreadActivity32(Core::System& system, Handle thread_handle,
+                                      Svc::ThreadActivity thread_activity) {
+    return SetThreadActivity(system, thread_handle, thread_activity);
 }
 
 /// Gets the thread context
-static ResultCode GetThreadContext(Core::System& system, VAddr thread_context, Handle handle) {
+static ResultCode GetThreadContext(Core::System& system, VAddr out_context, Handle thread_handle) {
-    LOG_DEBUG(Kernel_SVC, "called, context=0x{:08X}, thread=0x{:X}", thread_context, handle);
+    LOG_DEBUG(Kernel_SVC, "called, out_context=0x{:08X}, thread_handle=0x{:X}", out_context,
+              thread_handle);
 
+    // Get the thread from its handle.
     const auto* current_process = system.Kernel().CurrentProcess();
-    const std::shared_ptr<Thread> thread = current_process->GetHandleTable().Get<Thread>(handle);
+    const std::shared_ptr<KThread> thread =
-    if (!thread) {
+        current_process->GetHandleTable().Get<KThread>(thread_handle);
-        LOG_ERROR(Kernel_SVC, "Thread handle does not exist, handle=0x{:08X}", handle);
+    R_UNLESS(thread, Svc::ResultInvalidHandle);
-        return ERR_INVALID_HANDLE;
-    }
 
-    if (thread->GetOwnerProcess() != current_process) {
+    // Require the handle be to a non-current thread in the current process.
-        LOG_ERROR(Kernel_SVC,
+    R_UNLESS(thread->GetOwnerProcess() == current_process, Svc::ResultInvalidHandle);
-                  "The current process does not own the current thread, thread_handle={:08X} "
+    R_UNLESS(thread.get() != system.Kernel().CurrentScheduler()->GetCurrentThread(),
-                  "thread_pid={}, "
+             Svc::ResultBusy);
-                  "current_process_pid={}",
-                  handle, thread->GetOwnerProcess()->GetProcessID(),
-                  current_process->GetProcessID());
-        return ERR_INVALID_HANDLE;
-    }
 
-    if (thread.get() == system.Kernel().CurrentScheduler()->GetCurrentThread()) {
+    // Get the thread context.
-        LOG_ERROR(Kernel_SVC, "The thread handle specified is the current running thread");
+    std::vector<u8> context;
-        return ERR_BUSY;
+    R_TRY(thread->GetThreadContext3(context));
-    }
 
-    Core::ARM_Interface::ThreadContext64 ctx = thread->GetContext64();
+    // Copy the thread context to user space.
-    // Mask away mode bits, interrupt bits, IL bit, and other reserved bits.
+    system.Memory().WriteBlock(out_context, context.data(), context.size());
-    ctx.pstate &= 0xFF0FFE20;
 
-    // If 64-bit, we can just write the context registers directly and we're good.
-    // However, if 32-bit, we have to ensure some registers are zeroed out.
-    if (!current_process->Is64BitProcess()) {
-        std::fill(ctx.cpu_registers.begin() + 15, ctx.cpu_registers.end(), 0);
-        std::fill(ctx.vector_registers.begin() + 16, ctx.vector_registers.end(), u128{});
-    }
-
-    system.Memory().WriteBlock(thread_context, &ctx, sizeof(ctx));
     return RESULT_SUCCESS;
 }
 
-static ResultCode GetThreadContext32(Core::System& system, u32 thread_context, Handle handle) {
+static ResultCode GetThreadContext32(Core::System& system, u32 out_context, Handle thread_handle) {
-    return GetThreadContext(system, thread_context, handle);
+    return GetThreadContext(system, out_context, thread_handle);
 }
 
 /// Gets the priority for the specified thread
-static ResultCode GetThreadPriority(Core::System& system, u32* priority, Handle handle) {
+static ResultCode GetThreadPriority(Core::System& system, u32* out_priority, Handle handle) {
     LOG_TRACE(Kernel_SVC, "called");
 
+    // Get the thread from its handle.
     const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
-    const std::shared_ptr<Thread> thread = handle_table.Get<Thread>(handle);
+    const std::shared_ptr<KThread> thread = handle_table.Get<KThread>(handle);
-    if (!thread) {
+    R_UNLESS(thread, Svc::ResultInvalidHandle);
-        *priority = 0;
-        LOG_ERROR(Kernel_SVC, "Thread handle does not exist, handle=0x{:08X}", handle);
-        return ERR_INVALID_HANDLE;
-    }
 
-    *priority = thread->GetPriority();
+    // Get the thread's priority.
+    *out_priority = thread->GetPriority();
     return RESULT_SUCCESS;
 }
 
-static ResultCode GetThreadPriority32(Core::System& system, u32* priority, Handle handle) {
+static ResultCode GetThreadPriority32(Core::System& system, u32* out_priority, Handle handle) {
-    return GetThreadPriority(system, priority, handle);
+    return GetThreadPriority(system, out_priority, handle);
 }
 
 /// Sets the priority for the specified thread
 static ResultCode SetThreadPriority(Core::System& system, Handle handle, u32 priority) {
     LOG_TRACE(Kernel_SVC, "called");
 
-    if (priority > THREADPRIO_LOWEST) {
+    // Validate the priority.
-        LOG_ERROR(
+    R_UNLESS(Svc::HighestThreadPriority <= priority && priority <= Svc::LowestThreadPriority,
-            Kernel_SVC,
+             Svc::ResultInvalidPriority);
-            "An invalid priority was specified, expected {} but got {} for thread_handle={:08X}",
-            THREADPRIO_LOWEST, priority, handle);
-        return ERR_INVALID_THREAD_PRIORITY;
-    }
 
-    const auto* const current_process = system.Kernel().CurrentProcess();
+    // Get the thread from its handle.
-
+    const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
-    std::shared_ptr<Thread> thread = current_process->GetHandleTable().Get<Thread>(handle);
+    const std::shared_ptr<KThread> thread = handle_table.Get<KThread>(handle);
-    if (!thread) {
+    R_UNLESS(thread, Svc::ResultInvalidHandle);
-        LOG_ERROR(Kernel_SVC, "Thread handle does not exist, handle=0x{:08X}", handle);
-        return ERR_INVALID_HANDLE;
-    }
 
+    // Set the thread priority.
     thread->SetBasePriority(priority);
-
     return RESULT_SUCCESS;
 }
 
@@ -1438,62 +1416,47 @@ static void ExitProcess(Core::System& system) {
     current_process->PrepareForTermination();
 
     // Kill the current thread
-    system.Kernel().CurrentScheduler()->GetCurrentThread()->Stop();
+    system.Kernel().CurrentScheduler()->GetCurrentThread()->Exit();
 }
 
 static void ExitProcess32(Core::System& system) {
     ExitProcess(system);
 }
 
+static constexpr bool IsValidCoreId(int32_t core_id) {
+    return (0 <= core_id && core_id < static_cast<int32_t>(Core::Hardware::NUM_CPU_CORES));
+}
+
 /// Creates a new thread
 static ResultCode CreateThread(Core::System& system, Handle* out_handle, VAddr entry_point, u64 arg,
-                               VAddr stack_top, u32 priority, s32 processor_id) {
+                               VAddr stack_bottom, u32 priority, s32 core_id) {
     LOG_DEBUG(Kernel_SVC,
-              "called entrypoint=0x{:08X}, arg=0x{:08X}, stacktop=0x{:08X}, "
+              "called entry_point=0x{:08X}, arg=0x{:08X}, stack_bottom=0x{:08X}, "
-              "threadpriority=0x{:08X}, processorid=0x{:08X} : created handle=0x{:08X}",
+              "priority=0x{:08X}, core_id=0x{:08X}",
-              entry_point, arg, stack_top, priority, processor_id, *out_handle);
+              entry_point, arg, stack_bottom, priority, core_id);
-
-    auto* const current_process = system.Kernel().CurrentProcess();
-
-    if (processor_id == THREADPROCESSORID_IDEAL) {
-        // Set the target CPU to the one specified by the process.
-        processor_id = current_process->GetIdealCore();
-        ASSERT(processor_id != THREADPROCESSORID_IDEAL);
-    }
-
-    if (processor_id < THREADPROCESSORID_0 || processor_id > THREADPROCESSORID_3) {
-        LOG_ERROR(Kernel_SVC, "Invalid thread processor ID: {}", processor_id);
-        return ERR_INVALID_PROCESSOR_ID;
-    }
-
-    const u64 core_mask = current_process->GetCoreMask();
-    if ((core_mask | (1ULL << processor_id)) != core_mask) {
-        LOG_ERROR(Kernel_SVC, "Invalid thread core specified ({})", processor_id);
-        return ERR_INVALID_PROCESSOR_ID;
-    }
-
-    if (priority > THREADPRIO_LOWEST) {
-        LOG_ERROR(Kernel_SVC,
-                  "Invalid thread priority specified ({}). Must be within the range 0-64",
-                  priority);
-        return ERR_INVALID_THREAD_PRIORITY;
-    }
-
-    if (((1ULL << priority) & current_process->GetPriorityMask()) == 0) {
-        LOG_ERROR(Kernel_SVC, "Invalid thread priority specified ({})", priority);
-        return ERR_INVALID_THREAD_PRIORITY;
-    }
 
+    // Adjust core id, if it's the default magic.
     auto& kernel = system.Kernel();
+    auto& process = *kernel.CurrentProcess();
+    if (core_id == Svc::IdealCoreUseProcessValue) {
+        core_id = process.GetIdealCoreId();
+    }
+
+    // Validate arguments.
+    R_UNLESS(IsValidCoreId(core_id), Svc::ResultInvalidCoreId);
+    R_UNLESS(((1ULL << core_id) & process.GetCoreMask()) != 0, Svc::ResultInvalidCoreId);
+
+    R_UNLESS(Svc::HighestThreadPriority <= priority && priority <= Svc::LowestThreadPriority,
+             Svc::ResultInvalidPriority);
+    R_UNLESS(process.CheckThreadPriority(priority), Svc::ResultInvalidPriority);
 
     ASSERT(kernel.CurrentProcess()->GetResourceLimit()->Reserve(ResourceType::Threads, 1));
 
-    ThreadType type = THREADTYPE_USER;
+    CASCADE_RESULT(std::shared_ptr<KThread> thread,
-    CASCADE_RESULT(std::shared_ptr<Thread> thread,
+                   KThread::Create(system, ThreadType::User, "", entry_point, priority, arg,
-                   Thread::Create(system, type, "", entry_point, priority, arg, processor_id,
+                                   core_id, stack_bottom, &process));
-                                  stack_top, current_process));
 
-    const auto new_thread_handle = current_process->GetHandleTable().Create(thread);
+    const auto new_thread_handle = process.GetHandleTable().Create(thread);
     if (new_thread_handle.Failed()) {
         LOG_ERROR(Kernel_SVC, "Failed to create handle with error=0x{:X}",
                   new_thread_handle.Code().raw);
@@ -1517,17 +1480,15 @@ static ResultCode CreateThread32(Core::System& system, Handle* out_handle, u32 p
 static ResultCode StartThread(Core::System& system, Handle thread_handle) {
     LOG_DEBUG(Kernel_SVC, "called thread=0x{:08X}", thread_handle);
 
+    // Get the thread from its handle.
     const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
-    const std::shared_ptr<Thread> thread = handle_table.Get<Thread>(thread_handle);
+    const std::shared_ptr<KThread> thread = handle_table.Get<KThread>(thread_handle);
-    if (!thread) {
+    R_UNLESS(thread, Svc::ResultInvalidHandle);
-        LOG_ERROR(Kernel_SVC, "Thread handle does not exist, thread_handle=0x{:08X}",
-                  thread_handle);
-        return ERR_INVALID_HANDLE;
-    }
 
-    ASSERT(thread->GetState() == ThreadState::Initialized);
+    // Try to start the thread.
+    R_TRY(thread->Run());
 
-    return thread->Start();
+    return RESULT_SUCCESS;
 }
 
 static ResultCode StartThread32(Core::System& system, Handle thread_handle) {
@@ -1540,7 +1501,7 @@ static void ExitThread(Core::System& system) {
 
     auto* const current_thread = system.Kernel().CurrentScheduler()->GetCurrentThread();
     system.GlobalSchedulerContext().RemoveThread(SharedFrom(current_thread));
-    current_thread->Stop();
+    current_thread->Exit();
 }
 
 static void ExitThread32(Core::System& system) {
@@ -1549,34 +1510,28 @@ static void ExitThread32(Core::System& system) {
 
 /// Sleep the current thread
 static void SleepThread(Core::System& system, s64 nanoseconds) {
+    auto& kernel = system.Kernel();
+    const auto yield_type = static_cast<Svc::YieldType>(nanoseconds);
+
     LOG_TRACE(Kernel_SVC, "called nanoseconds={}", nanoseconds);
 
-    enum class SleepType : s64 {
+    // When the input tick is positive, sleep.
-        YieldWithoutCoreMigration = 0,
+    if (nanoseconds > 0) {
-        YieldWithCoreMigration = -1,
+        // Convert the timeout from nanoseconds to ticks.
-        YieldAndWaitForLoadBalancing = -2,
+        // NOTE: Nintendo does not use this conversion logic in WaitSynchronization...
-    };
 
-    auto& scheduler = *system.Kernel().CurrentScheduler();
+        // Sleep.
-    if (nanoseconds <= 0) {
+        // NOTE: Nintendo does not check the result of this sleep.
-        switch (static_cast<SleepType>(nanoseconds)) {
+        static_cast<void>(GetCurrentThread(kernel).Sleep(nanoseconds));
-        case SleepType::YieldWithoutCoreMigration: {
+    } else if (yield_type == Svc::YieldType::WithoutCoreMigration) {
-            scheduler.YieldWithoutCoreMigration();
+        KScheduler::YieldWithoutCoreMigration(kernel);
-            break;
+    } else if (yield_type == Svc::YieldType::WithCoreMigration) {
-        }
+        KScheduler::YieldWithCoreMigration(kernel);
-        case SleepType::YieldWithCoreMigration: {
+    } else if (yield_type == Svc::YieldType::ToAnyThread) {
-            scheduler.YieldWithCoreMigration();
+        KScheduler::YieldToAnyThread(kernel);
-            break;
-        }
-        case SleepType::YieldAndWaitForLoadBalancing: {
-            scheduler.YieldToAnyThread();
-            break;
-        }
-        default:
-            UNREACHABLE_MSG("Unimplemented sleep yield type '{:016X}'!", nanoseconds);
-        }
     } else {
-        scheduler.GetCurrentThread()->Sleep(nanoseconds);
+        // Nintendo does nothing at all if an otherwise invalid value is passed.
+        UNREACHABLE_MSG("Unimplemented sleep yield type '{:016X}'!", nanoseconds);
     }
 }
 
@@ -1839,95 +1794,72 @@ static ResultCode CreateTransferMemory32(Core::System& system, Handle* handle, u
     return CreateTransferMemory(system, handle, addr, size, permissions);
 }
 
-static ResultCode GetThreadCoreMask(Core::System& system, Handle thread_handle, u32* core,
+static ResultCode GetThreadCoreMask(Core::System& system, Handle thread_handle, s32* out_core_id,
-                                    u64* mask) {
+                                    u64* out_affinity_mask) {
     LOG_TRACE(Kernel_SVC, "called, handle=0x{:08X}", thread_handle);
 
+    // Get the thread from its handle.
     const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
-    const std::shared_ptr<Thread> thread = handle_table.Get<Thread>(thread_handle);
+    const std::shared_ptr<KThread> thread = handle_table.Get<KThread>(thread_handle);
-    if (!thread) {
+    R_UNLESS(thread, Svc::ResultInvalidHandle);
-        LOG_ERROR(Kernel_SVC, "Thread handle does not exist, thread_handle=0x{:08X}",
-                  thread_handle);
-        *core = 0;
-        *mask = 0;
-        return ERR_INVALID_HANDLE;
-    }
 
-    *core = thread->GetIdealCore();
+    // Get the core mask.
-    *mask = thread->GetAffinityMask().GetAffinityMask();
+    R_TRY(thread->GetCoreMask(out_core_id, out_affinity_mask));
 
     return RESULT_SUCCESS;
 }
 
-static ResultCode GetThreadCoreMask32(Core::System& system, Handle thread_handle, u32* core,
+static ResultCode GetThreadCoreMask32(Core::System& system, Handle thread_handle, s32* out_core_id,
-                                      u32* mask_low, u32* mask_high) {
+                                      u32* out_affinity_mask_low, u32* out_affinity_mask_high) {
-    u64 mask{};
+    u64 out_affinity_mask{};
-    const auto result = GetThreadCoreMask(system, thread_handle, core, &mask);
+    const auto result = GetThreadCoreMask(system, thread_handle, out_core_id, &out_affinity_mask);
-    *mask_high = static_cast<u32>(mask >> 32);
+    *out_affinity_mask_high = static_cast<u32>(out_affinity_mask >> 32);
-    *mask_low = static_cast<u32>(mask);
+    *out_affinity_mask_low = static_cast<u32>(out_affinity_mask);
     return result;
 }
 
-static ResultCode SetThreadCoreMask(Core::System& system, Handle thread_handle, u32 core,
+static ResultCode SetThreadCoreMask(Core::System& system, Handle thread_handle, s32 core_id,
                                     u64 affinity_mask) {
-    LOG_DEBUG(Kernel_SVC, "called, handle=0x{:08X}, core=0x{:X}, affinity_mask=0x{:016X}",
+    LOG_DEBUG(Kernel_SVC, "called, handle=0x{:08X}, core_id=0x{:X}, affinity_mask=0x{:016X}",
-              thread_handle, core, affinity_mask);
+              thread_handle, core_id, affinity_mask);
 
-    const auto* const current_process = system.Kernel().CurrentProcess();
+    const auto& current_process = *system.Kernel().CurrentProcess();
 
-    if (core == static_cast<u32>(THREADPROCESSORID_IDEAL)) {
+    // Determine the core id/affinity mask.
-        const u8 ideal_cpu_core = current_process->GetIdealCore();
+    if (core_id == Svc::IdealCoreUseProcessValue) {
-
+        core_id = current_process.GetIdealCoreId();
-        ASSERT(ideal_cpu_core != static_cast<u8>(THREADPROCESSORID_IDEAL));
+        affinity_mask = (1ULL << core_id);
-
-        // Set the target CPU to the ideal core specified by the process.
-        core = ideal_cpu_core;
-        affinity_mask = 1ULL << core;
     } else {
-        const u64 core_mask = current_process->GetCoreMask();
+        // Validate the affinity mask.
+        const u64 process_core_mask = current_process.GetCoreMask();
+        R_UNLESS((affinity_mask | process_core_mask) == process_core_mask,
+                 Svc::ResultInvalidCoreId);
+        R_UNLESS(affinity_mask != 0, Svc::ResultInvalidCombination);
 
-        if ((core_mask | affinity_mask) != core_mask) {
+        // Validate the core id.
-            LOG_ERROR(
+        if (IsValidCoreId(core_id)) {
-                Kernel_SVC,
+            R_UNLESS(((1ULL << core_id) & affinity_mask) != 0, Svc::ResultInvalidCombination);
-                "Invalid processor ID specified (core_mask=0x{:08X}, affinity_mask=0x{:016X})",
+        } else {
-                core_mask, affinity_mask);
+            R_UNLESS(core_id == Svc::IdealCoreNoUpdate || core_id == Svc::IdealCoreDontCare,
-            return ERR_INVALID_PROCESSOR_ID;
+                     Svc::ResultInvalidCoreId);
-        }
-
-        if (affinity_mask == 0) {
-            LOG_ERROR(Kernel_SVC, "Specfified affinity mask is zero.");
-            return ERR_INVALID_COMBINATION;
-        }
-
-        if (core < Core::Hardware::NUM_CPU_CORES) {
-            if ((affinity_mask & (1ULL << core)) == 0) {
-                LOG_ERROR(Kernel_SVC,
-                          "Core is not enabled for the current mask, core={}, mask={:016X}", core,
-                          affinity_mask);
-                return ERR_INVALID_COMBINATION;
-            }
-        } else if (core != static_cast<u32>(THREADPROCESSORID_DONT_CARE) &&
-                   core != static_cast<u32>(THREADPROCESSORID_DONT_UPDATE)) {
-            LOG_ERROR(Kernel_SVC, "Invalid processor ID specified (core={}).", core);
-            return ERR_INVALID_PROCESSOR_ID;
         }
     }
 
-    const auto& handle_table = current_process->GetHandleTable();
+    // Get the thread from its handle.
-    const std::shared_ptr<Thread> thread = handle_table.Get<Thread>(thread_handle);
+    const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
-    if (!thread) {
+    const std::shared_ptr<KThread> thread = handle_table.Get<KThread>(thread_handle);
-        LOG_ERROR(Kernel_SVC, "Thread handle does not exist, thread_handle=0x{:08X}",
+    R_UNLESS(thread, Svc::ResultInvalidHandle);
-                  thread_handle);
-        return ERR_INVALID_HANDLE;
-    }
 
-    return thread->SetCoreAndAffinityMask(core, affinity_mask);
+    // Set the core mask.
+    R_TRY(thread->SetCoreMask(core_id, affinity_mask));
+
+    return RESULT_SUCCESS;
 }
 
-static ResultCode SetThreadCoreMask32(Core::System& system, Handle thread_handle, u32 core,
+static ResultCode SetThreadCoreMask32(Core::System& system, Handle thread_handle, s32 core_id,
                                       u32 affinity_mask_low, u32 affinity_mask_high) {
     const auto affinity_mask = u64{affinity_mask_low} | (u64{affinity_mask_high} << 32);
-    return SetThreadCoreMask(system, thread_handle, core, affinity_mask);
+    return SetThreadCoreMask(system, thread_handle, core_id, affinity_mask);
 }
 
 static ResultCode CreateEvent(Core::System& system, Handle* write_handle, Handle* read_handle) {
@@ -2491,7 +2423,7 @@ void Call(Core::System& system, u32 immediate) {
     kernel.EnterSVCProfile();
 
     auto* thread = kernel.CurrentScheduler()->GetCurrentThread();
-    thread->SetContinuousOnSVC(true);
+    thread->SetIsCallingSvc();
 
     const FunctionDef* info = system.CurrentProcess()->Is64BitProcess() ? GetSVCInfo64(immediate)
                                                                         : GetSVCInfo32(immediate);
@@ -2507,7 +2439,7 @@ void Call(Core::System& system, u32 immediate) {
 
     kernel.ExitSVCProfile();
 
-    if (!thread->IsContinuousOnSVC()) {
+    if (!thread->IsCallingSvc()) {
         auto* host_context = thread->GetHostContext().get();
         host_context->Rewind();
     }

src/core/hle/kernel/svc_results.h

@@ -8,13 +8,18 @@
 
 namespace Kernel::Svc {
 
+constexpr ResultCode ResultNoSynchronizationObject{ErrorModule::Kernel, 57};
 constexpr ResultCode ResultTerminationRequested{ErrorModule::Kernel, 59};
 constexpr ResultCode ResultInvalidAddress{ErrorModule::Kernel, 102};
 constexpr ResultCode ResultInvalidCurrentMemory{ErrorModule::Kernel, 106};
+constexpr ResultCode ResultInvalidPriority{ErrorModule::Kernel, 112};
+constexpr ResultCode ResultInvalidCoreId{ErrorModule::Kernel, 113};
 constexpr ResultCode ResultInvalidHandle{ErrorModule::Kernel, 114};
+constexpr ResultCode ResultInvalidCombination{ErrorModule::Kernel, 116};
 constexpr ResultCode ResultTimedOut{ErrorModule::Kernel, 117};
 constexpr ResultCode ResultCancelled{ErrorModule::Kernel, 118};
 constexpr ResultCode ResultInvalidEnumValue{ErrorModule::Kernel, 120};
+constexpr ResultCode ResultBusy{ErrorModule::Kernel, 122};
 constexpr ResultCode ResultInvalidState{ErrorModule::Kernel, 125};
 
 } // namespace Kernel::Svc

src/core/hle/kernel/svc_types.h

@@ -77,4 +77,22 @@ enum class ArbitrationType : u32 {
     WaitIfEqual = 2,
 };
 
+enum class YieldType : s64 {
+    WithoutCoreMigration = 0,
+    WithCoreMigration = -1,
+    ToAnyThread = -2,
+};
+
+enum class ThreadActivity : u32 {
+    Runnable = 0,
+    Paused = 1,
+};
+
+constexpr inline s32 IdealCoreDontCare = -1;
+constexpr inline s32 IdealCoreUseProcessValue = -2;
+constexpr inline s32 IdealCoreNoUpdate = -3;
+
+constexpr inline s32 LowestThreadPriority = 63;
+constexpr inline s32 HighestThreadPriority = 0;
+
 } // namespace Kernel::Svc

src/core/hle/kernel/svc_wrap.h

@@ -58,6 +58,14 @@ void SvcWrap64(Core::System& system) {
         func(system, static_cast<u32>(Param(system, 0)), static_cast<u32>(Param(system, 1))).raw);
 }
 
+// Used by SetThreadActivity
+template <ResultCode func(Core::System&, Handle, Svc::ThreadActivity)>
+void SvcWrap64(Core::System& system) {
+    FuncReturn(system, func(system, static_cast<u32>(Param(system, 0)),
+                            static_cast<Svc::ThreadActivity>(Param(system, 1)))
+                           .raw);
+}
+
 template <ResultCode func(Core::System&, u32, u64, u64, u64)>
 void SvcWrap64(Core::System& system) {
     FuncReturn(system, func(system, static_cast<u32>(Param(system, 0)), Param(system, 1),
@@ -158,9 +166,18 @@ void SvcWrap64(Core::System& system) {
                            .raw);
 }
 
-template <ResultCode func(Core::System&, u32, u32*, u64*)>
+// Used by SetThreadCoreMask
+template <ResultCode func(Core::System&, Handle, s32, u64)>
 void SvcWrap64(Core::System& system) {
-    u32 param_1 = 0;
+    FuncReturn(system, func(system, static_cast<u32>(Param(system, 0)),
+                            static_cast<s32>(Param(system, 1)), Param(system, 2))
+                           .raw);
+}
+
+// Used by GetThreadCoreMask
+template <ResultCode func(Core::System&, Handle, s32*, u64*)>
+void SvcWrap64(Core::System& system) {
+    s32 param_1 = 0;
     u64 param_2 = 0;
     const ResultCode retval = func(system, static_cast<u32>(Param(system, 2)), &param_1, &param_2);
 
@@ -473,12 +490,35 @@ void SvcWrap32(Core::System& system) {
     FuncReturn(system, retval);
 }
 
+// Used by GetThreadCoreMask32
+template <ResultCode func(Core::System&, Handle, s32*, u32*, u32*)>
+void SvcWrap32(Core::System& system) {
+    s32 param_1 = 0;
+    u32 param_2 = 0;
+    u32 param_3 = 0;
+
+    const u32 retval = func(system, Param32(system, 2), &param_1, &param_2, &param_3).raw;
+    system.CurrentArmInterface().SetReg(1, param_1);
+    system.CurrentArmInterface().SetReg(2, param_2);
+    system.CurrentArmInterface().SetReg(3, param_3);
+    FuncReturn(system, retval);
+}
+
 // Used by SignalProcessWideKey32
 template <void func(Core::System&, u32, s32)>
 void SvcWrap32(Core::System& system) {
     func(system, static_cast<u32>(Param(system, 0)), static_cast<s32>(Param(system, 1)));
 }
 
+// Used by SetThreadActivity32
+template <ResultCode func(Core::System&, Handle, Svc::ThreadActivity)>
+void SvcWrap32(Core::System& system) {
+    const u32 retval = func(system, static_cast<Handle>(Param(system, 0)),
+                            static_cast<Svc::ThreadActivity>(Param(system, 1)))
+                           .raw;
+    FuncReturn(system, retval);
+}
+
 // Used by SetThreadPriority32
 template <ResultCode func(Core::System&, Handle, u32)>
 void SvcWrap32(Core::System& system) {
@@ -487,7 +527,7 @@ void SvcWrap32(Core::System& system) {
     FuncReturn(system, retval);
 }
 
-// Used by SetThreadCoreMask32
+// Used by SetMemoryAttribute32
 template <ResultCode func(Core::System&, Handle, u32, u32, u32)>
 void SvcWrap32(Core::System& system) {
     const u32 retval =
@@ -497,6 +537,16 @@ void SvcWrap32(Core::System& system) {
     FuncReturn(system, retval);
 }
 
+// Used by SetThreadCoreMask32
+template <ResultCode func(Core::System&, Handle, s32, u32, u32)>
+void SvcWrap32(Core::System& system) {
+    const u32 retval =
+        func(system, static_cast<Handle>(Param(system, 0)), static_cast<s32>(Param(system, 1)),
+             static_cast<u32>(Param(system, 2)), static_cast<u32>(Param(system, 3)))
+            .raw;
+    FuncReturn(system, retval);
+}
+
 // Used by WaitProcessWideKeyAtomic32
 template <ResultCode func(Core::System&, u32, u32, Handle, u32, u32)>
 void SvcWrap32(Core::System& system) {

src/core/hle/kernel/time_manager.cpp

@@ -8,8 +8,8 @@
 #include "core/core_timing_util.h"
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/k_scheduler.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/time_manager.h"
 
 namespace Kernel {
@@ -18,50 +18,30 @@ TimeManager::TimeManager(Core::System& system_) : system{system_} {
     time_manager_event_type = Core::Timing::CreateEvent(
         "Kernel::TimeManagerCallback",
         [this](std::uintptr_t thread_handle, std::chrono::nanoseconds) {
-            std::shared_ptr<Thread> thread;
+            std::shared_ptr<KThread> thread;
             {
                 std::lock_guard lock{mutex};
-                const auto proper_handle = static_cast<Handle>(thread_handle);
+                thread = SharedFrom<KThread>(reinterpret_cast<KThread*>(thread_handle));
-                if (cancelled_events[proper_handle]) {
-                    return;
-                }
-                thread = system.Kernel().RetrieveThreadFromGlobalHandleTable(proper_handle);
-            }
-
-            if (thread) {
-                // Thread can be null if process has exited
-                thread->Wakeup();
             }
+            thread->Wakeup();
         });
 }
 
-void TimeManager::ScheduleTimeEvent(Handle& event_handle, Thread* timetask, s64 nanoseconds) {
+void TimeManager::ScheduleTimeEvent(KThread* thread, s64 nanoseconds) {
     std::lock_guard lock{mutex};
-    event_handle = timetask->GetGlobalHandle();
     if (nanoseconds > 0) {
-        ASSERT(timetask);
+        ASSERT(thread);
-        ASSERT(timetask->GetState() != ThreadState::Runnable);
+        ASSERT(thread->GetState() != ThreadState::Runnable);
         system.CoreTiming().ScheduleEvent(std::chrono::nanoseconds{nanoseconds},
-                                          time_manager_event_type, event_handle);
+                                          time_manager_event_type,
-    } else {
+                                          reinterpret_cast<uintptr_t>(thread));
-        event_handle = InvalidHandle;
     }
-    cancelled_events[event_handle] = false;
 }
 
-void TimeManager::UnscheduleTimeEvent(Handle event_handle) {
+void TimeManager::UnscheduleTimeEvent(KThread* thread) {
     std::lock_guard lock{mutex};
-    if (event_handle == InvalidHandle) {
+    system.CoreTiming().UnscheduleEvent(time_manager_event_type,
-        return;
+                                        reinterpret_cast<uintptr_t>(thread));
-    }
-    system.CoreTiming().UnscheduleEvent(time_manager_event_type, event_handle);
-    cancelled_events[event_handle] = true;
-}
-
-void TimeManager::CancelTimeEvent(Thread* time_task) {
-    std::lock_guard lock{mutex};
-    const Handle event_handle = time_task->GetGlobalHandle();
-    UnscheduleTimeEvent(event_handle);
 }
 
 } // namespace Kernel

src/core/hle/kernel/time_manager.h

@@ -20,7 +20,7 @@ struct EventType;
 
 namespace Kernel {
 
-class Thread;
+class KThread;
 
 /**
  * The `TimeManager` takes care of scheduling time events on threads and executes their TimeUp
@@ -31,18 +31,14 @@ public:
     explicit TimeManager(Core::System& system);
 
     /// Schedule a time event on `timetask` thread that will expire in 'nanoseconds'
-    /// returns a non-invalid handle in `event_handle` if correctly scheduled
+    void ScheduleTimeEvent(KThread* time_task, s64 nanoseconds);
-    void ScheduleTimeEvent(Handle& event_handle, Thread* timetask, s64 nanoseconds);
 
     /// Unschedule an existing time event
-    void UnscheduleTimeEvent(Handle event_handle);
+    void UnscheduleTimeEvent(KThread* thread);
-
-    void CancelTimeEvent(Thread* time_task);
 
 private:
     Core::System& system;
     std::shared_ptr<Core::Timing::EventType> time_manager_event_type;
-    std::unordered_map<Handle, bool> cancelled_events;
     std::mutex mutex;
 };
 

src/core/hle/kernel/transfer_memory.h

@@ -72,6 +72,8 @@ public:
     /// is closed.
     ResultCode Reset();
 
+    void Finalize() override {}
+
 private:
     /// The base address for the memory managed by this instance.
     VAddr base_address{};

src/core/hle/kernel/writable_event.cpp

@@ -4,10 +4,10 @@
 
 #include <algorithm>
 #include "common/assert.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/object.h"
 #include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/writable_event.h"
 
 namespace Kernel {
@@ -38,8 +38,4 @@ void WritableEvent::Clear() {
     readable->Clear();
 }
 
-bool WritableEvent::IsSignaled() const {
-    return readable->IsSignaled();
-}
-
 } // namespace Kernel

src/core/hle/kernel/writable_event.h

@@ -46,7 +46,8 @@ public:
 
     void Signal();
     void Clear();
-    bool IsSignaled() const;
+
+    void Finalize() override {}
 
 private:
     explicit WritableEvent(KernelCore& kernel);

src/core/hle/service/nfp/nfp.cpp

@@ -8,9 +8,9 @@
 #include "common/logging/log.h"
 #include "core/core.h"
 #include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/writable_event.h"
 #include "core/hle/lock.h"
 #include "core/hle/service/nfp/nfp.h"

src/core/hle/service/nvdrv/interface.cpp

@@ -6,9 +6,9 @@
 #include "common/logging/log.h"
 #include "core/core.h"
 #include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/nvdrv/interface.h"
 #include "core/hle/service/nvdrv/nvdata.h"

src/core/hle/service/service.cpp

@@ -11,10 +11,10 @@
 #include "core/hle/ipc.h"
 #include "core/hle/ipc_helpers.h"
 #include "core/hle/kernel/client_port.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/kernel.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/server_port.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/service/acc/acc.h"
 #include "core/hle/service/am/am.h"
 #include "core/hle/service/aoc/aoc_u.h"

src/core/hle/service/sockets/bsd.cpp

@@ -13,7 +13,7 @@
 #include "common/microprofile.h"
 #include "common/thread.h"
 #include "core/hle/ipc_helpers.h"
-#include "core/hle/kernel/thread.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/service/sockets/bsd.h"
 #include "core/hle/service/sockets/sockets_translate.h"
 #include "core/network/network.h"

src/core/hle/service/time/time.cpp

@@ -121,7 +121,7 @@ private:
 };
 
 ResultCode Module::Interface::GetClockSnapshotFromSystemClockContextInternal(
-    Kernel::Thread* thread, Clock::SystemClockContext user_context,
+    Kernel::KThread* thread, Clock::SystemClockContext user_context,
     Clock::SystemClockContext network_context, u8 type, Clock::ClockSnapshot& clock_snapshot) {
 
     auto& time_manager{system.GetTimeManager()};

src/core/hle/service/time/time.h

@@ -39,7 +39,7 @@ public:
 
     private:
         ResultCode GetClockSnapshotFromSystemClockContextInternal(
-            Kernel::Thread* thread, Clock::SystemClockContext user_context,
+            Kernel::KThread* thread, Clock::SystemClockContext user_context,
             Clock::SystemClockContext network_context, u8 type,
             Clock::ClockSnapshot& cloc_snapshot);
 

src/core/hle/service/time/time_sharedmemory.h

@@ -6,8 +6,8 @@
 
 #include "common/common_types.h"
 #include "common/uuid.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/shared_memory.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/service/time/clock_types.h"
 
 namespace Service::Time {

src/core/hle/service/vi/vi.cpp

@@ -18,8 +18,8 @@
 #include "common/swap.h"
 #include "core/core_timing.h"
 #include "core/hle/ipc_helpers.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/readable_event.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/kernel/writable_event.h"
 #include "core/hle/service/nvdrv/nvdata.h"
 #include "core/hle/service/nvdrv/nvdrv.h"

src/core/loader/nro.cpp

@@ -15,9 +15,9 @@
 #include "core/file_sys/romfs_factory.h"
 #include "core/file_sys/vfs_offset.h"
 #include "core/hle/kernel/code_set.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/memory/page_table.h"
 #include "core/hle/kernel/process.h"
-#include "core/hle/kernel/thread.h"
 #include "core/hle/service/filesystem/filesystem.h"
 #include "core/loader/nro.h"
 #include "core/loader/nso.h"
@@ -219,8 +219,8 @@ AppLoader_NRO::LoadResult AppLoader_NRO::Load(Kernel::Process& process, Core::Sy
     }
 
     is_loaded = true;
-    return {ResultStatus::Success,
+    return {ResultStatus::Success, LoadParameters{Kernel::KThread::DefaultThreadPriority,
-            LoadParameters{Kernel::THREADPRIO_DEFAULT, Core::Memory::DEFAULT_STACK_SIZE}};
+                                                  Core::Memory::DEFAULT_STACK_SIZE}};
 }
 
 ResultStatus AppLoader_NRO::ReadIcon(std::vector<u8>& buffer) {

src/core/loader/nso.cpp

@@ -15,9 +15,9 @@
 #include "core/core.h"
 #include "core/file_sys/patch_manager.h"
 #include "core/hle/kernel/code_set.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/memory/page_table.h"
 #include "core/hle/kernel/process.h"
-#include "core/hle/kernel/thread.h"
 #include "core/loader/nso.h"
 #include "core/memory.h"
 #include "core/settings.h"
@@ -179,8 +179,8 @@ AppLoader_NSO::LoadResult AppLoader_NSO::Load(Kernel::Process& process, Core::Sy
     LOG_DEBUG(Loader, "loaded module {} @ 0x{:X}", file->GetName(), base_address);
 
     is_loaded = true;
-    return {ResultStatus::Success,
+    return {ResultStatus::Success, LoadParameters{Kernel::KThread::DefaultThreadPriority,
-            LoadParameters{Kernel::THREADPRIO_DEFAULT, Core::Memory::DEFAULT_STACK_SIZE}};
+                                                  Core::Memory::DEFAULT_STACK_SIZE}};
 }
 
 ResultStatus AppLoader_NSO::ReadNSOModules(Modules& modules) {

src/yuzu/debugger/wait_tree.cpp

@@ -15,10 +15,11 @@
 #include "core/hle/kernel/handle_table.h"
 #include "core/hle/kernel/k_scheduler.h"
 #include "core/hle/kernel/k_synchronization_object.h"
+#include "core/hle/kernel/k_thread.h"
 #include "core/hle/kernel/process.h"
 #include "core/hle/kernel/readable_event.h"
 #include "core/hle/kernel/svc_common.h"
-#include "core/hle/kernel/thread.h"
+#include "core/hle/kernel/svc_types.h"
 #include "core/memory.h"
 
 namespace {
@@ -90,12 +91,10 @@ std::size_t WaitTreeItem::Row() const {
 std::vector<std::unique_ptr<WaitTreeThread>> WaitTreeItem::MakeThreadItemList() {
     std::vector<std::unique_ptr<WaitTreeThread>> item_list;
     std::size_t row = 0;
-    auto add_threads = [&](const std::vector<std::shared_ptr<Kernel::Thread>>& threads) {
+    auto add_threads = [&](const std::vector<std::shared_ptr<Kernel::KThread>>& threads) {
         for (std::size_t i = 0; i < threads.size(); ++i) {
-            if (!threads[i]->IsHLEThread()) {
+            item_list.push_back(std::make_unique<WaitTreeThread>(*threads[i]));
-                item_list.push_back(std::make_unique<WaitTreeThread>(*threads[i]));
+            item_list.back()->row = row;
-                item_list.back()->row = row;
-            }
             ++row;
         }
     };
@@ -117,7 +116,7 @@ WaitTreeMutexInfo::WaitTreeMutexInfo(VAddr mutex_address, const Kernel::HandleTa
     : mutex_address(mutex_address) {
     mutex_value = Core::System::GetInstance().Memory().Read32(mutex_address);
     owner_handle = static_cast<Kernel::Handle>(mutex_value & Kernel::Svc::HandleWaitMask);
-    owner = handle_table.Get<Kernel::Thread>(owner_handle);
+    owner = handle_table.Get<Kernel::KThread>(owner_handle);
 }
 
 WaitTreeMutexInfo::~WaitTreeMutexInfo() = default;
@@ -139,7 +138,7 @@ std::vector<std::unique_ptr<WaitTreeItem>> WaitTreeMutexInfo::GetChildren() cons
     return list;
 }
 
-WaitTreeCallstack::WaitTreeCallstack(const Kernel::Thread& thread) : thread(thread) {}
+WaitTreeCallstack::WaitTreeCallstack(const Kernel::KThread& thread) : thread(thread) {}
 WaitTreeCallstack::~WaitTreeCallstack() = default;
 
 QString WaitTreeCallstack::GetText() const {
@@ -149,10 +148,6 @@ QString WaitTreeCallstack::GetText() const {
 std::vector<std::unique_ptr<WaitTreeItem>> WaitTreeCallstack::GetChildren() const {
     std::vector<std::unique_ptr<WaitTreeItem>> list;
 
-    if (thread.IsHLEThread()) {
-        return list;
-    }
-
     if (thread.GetOwnerProcess() == nullptr || !thread.GetOwnerProcess()->Is64BitProcess()) {
         return list;
     }
@@ -194,7 +189,7 @@ std::unique_ptr<WaitTreeSynchronizationObject> WaitTreeSynchronizationObject::ma
     case Kernel::HandleType::ReadableEvent:
         return std::make_unique<WaitTreeEvent>(static_cast<const Kernel::ReadableEvent&>(object));
     case Kernel::HandleType::Thread:
-        return std::make_unique<WaitTreeThread>(static_cast<const Kernel::Thread&>(object));
+        return std::make_unique<WaitTreeThread>(static_cast<const Kernel::KThread&>(object));
     default:
         return std::make_unique<WaitTreeSynchronizationObject>(object);
     }
@@ -231,21 +226,17 @@ std::vector<std::unique_ptr<WaitTreeItem>> WaitTreeObjectList::GetChildren() con
     return list;
 }
 
-WaitTreeThread::WaitTreeThread(const Kernel::Thread& thread)
+WaitTreeThread::WaitTreeThread(const Kernel::KThread& thread)
     : WaitTreeSynchronizationObject(thread) {}
 WaitTreeThread::~WaitTreeThread() = default;
 
 QString WaitTreeThread::GetText() const {
-    const auto& thread = static_cast<const Kernel::Thread&>(object);
+    const auto& thread = static_cast<const Kernel::KThread&>(object);
     QString status;
     switch (thread.GetState()) {
     case Kernel::ThreadState::Runnable:
-        if (!thread.IsPaused()) {
+        if (!thread.IsSuspended()) {
-            if (thread.WasRunning()) {
+            status = tr("runnable");
-                status = tr("running");
-            } else {
-                status = tr("ready");
-            }
         } else {
             status = tr("paused");
         }
@@ -297,15 +288,11 @@ QString WaitTreeThread::GetText() const {
 QColor WaitTreeThread::GetColor() const {
     const std::size_t color_index = IsDarkTheme() ? 1 : 0;
 
-    const auto& thread = static_cast<const Kernel::Thread&>(object);
+    const auto& thread = static_cast<const Kernel::KThread&>(object);
     switch (thread.GetState()) {
     case Kernel::ThreadState::Runnable:
-        if (!thread.IsPaused()) {
+        if (!thread.IsSuspended()) {
-            if (thread.WasRunning()) {
+            return QColor(WaitTreeColors[0][color_index]);
-                return QColor(WaitTreeColors[0][color_index]);
-            } else {
-                return QColor(WaitTreeColors[1][color_index]);
-            }
         } else {
             return QColor(WaitTreeColors[2][color_index]);
         }
@@ -336,27 +323,21 @@ QColor WaitTreeThread::GetColor() const {
 std::vector<std::unique_ptr<WaitTreeItem>> WaitTreeThread::GetChildren() const {
     std::vector<std::unique_ptr<WaitTreeItem>> list(WaitTreeSynchronizationObject::GetChildren());
 
-    const auto& thread = static_cast<const Kernel::Thread&>(object);
+    const auto& thread = static_cast<const Kernel::KThread&>(object);
 
     QString processor;
-    switch (thread.GetProcessorID()) {
+    switch (thread.GetActiveCore()) {
-    case Kernel::ThreadProcessorId::THREADPROCESSORID_IDEAL:
+    case Kernel::Svc::IdealCoreUseProcessValue:
         processor = tr("ideal");
         break;
-    case Kernel::ThreadProcessorId::THREADPROCESSORID_0:
-    case Kernel::ThreadProcessorId::THREADPROCESSORID_1:
-    case Kernel::ThreadProcessorId::THREADPROCESSORID_2:
-    case Kernel::ThreadProcessorId::THREADPROCESSORID_3:
-        processor = tr("core %1").arg(thread.GetProcessorID());
-        break;
     default:
-        processor = tr("Unknown processor %1").arg(thread.GetProcessorID());
+        processor = tr("core %1").arg(thread.GetActiveCore());
         break;
     }
 
     list.push_back(std::make_unique<WaitTreeText>(tr("processor = %1").arg(processor)));
-    list.push_back(
+    list.push_back(std::make_unique<WaitTreeText>(
-        std::make_unique<WaitTreeText>(tr("ideal core = %1").arg(thread.GetIdealCore())));
+        tr("ideal core = %1").arg(thread.GetIdealCoreForDebugging())));
     list.push_back(std::make_unique<WaitTreeText>(
         tr("affinity mask = %1").arg(thread.GetAffinityMask().GetAffinityMask())));
     list.push_back(std::make_unique<WaitTreeText>(tr("thread id = %1").arg(thread.GetThreadID())));
@@ -390,7 +371,7 @@ WaitTreeEvent::WaitTreeEvent(const Kernel::ReadableEvent& object)
     : WaitTreeSynchronizationObject(object) {}
 WaitTreeEvent::~WaitTreeEvent() = default;
 
-WaitTreeThreadList::WaitTreeThreadList(const std::vector<Kernel::Thread*>& list)
+WaitTreeThreadList::WaitTreeThreadList(const std::vector<Kernel::KThread*>& list)
     : thread_list(list) {}
 WaitTreeThreadList::~WaitTreeThreadList() = default;
 

src/yuzu/debugger/wait_tree.h

@@ -19,8 +19,8 @@ class EmuThread;
 namespace Kernel {
 class HandleTable;
 class KSynchronizationObject;
+class KThread;
 class ReadableEvent;
-class Thread;
 } // namespace Kernel
 
 class WaitTreeThread;
@@ -83,20 +83,20 @@ private:
     VAddr mutex_address;
     u32 mutex_value;
     Kernel::Handle owner_handle;
-    std::shared_ptr<Kernel::Thread> owner;
+    std::shared_ptr<Kernel::KThread> owner;
 };
 
 class WaitTreeCallstack : public WaitTreeExpandableItem {
     Q_OBJECT
 public:
-    explicit WaitTreeCallstack(const Kernel::Thread& thread);
+    explicit WaitTreeCallstack(const Kernel::KThread& thread);
     ~WaitTreeCallstack() override;
 
     QString GetText() const override;
     std::vector<std::unique_ptr<WaitTreeItem>> GetChildren() const override;
 
 private:
-    const Kernel::Thread& thread;
+    const Kernel::KThread& thread;
 };
 
 class WaitTreeSynchronizationObject : public WaitTreeExpandableItem {
@@ -131,7 +131,7 @@ private:
 class WaitTreeThread : public WaitTreeSynchronizationObject {
     Q_OBJECT
 public:
-    explicit WaitTreeThread(const Kernel::Thread& thread);
+    explicit WaitTreeThread(const Kernel::KThread& thread);
     ~WaitTreeThread() override;
 
     QString GetText() const override;
@@ -149,14 +149,14 @@ public:
 class WaitTreeThreadList : public WaitTreeExpandableItem {
     Q_OBJECT
 public:
-    explicit WaitTreeThreadList(const std::vector<Kernel::Thread*>& list);
+    explicit WaitTreeThreadList(const std::vector<Kernel::KThread*>& list);
     ~WaitTreeThreadList() override;
 
     QString GetText() const override;
     std::vector<std::unique_ptr<WaitTreeItem>> GetChildren() const override;
 
 private:
-    const std::vector<Kernel::Thread*>& thread_list;
+    const std::vector<Kernel::KThread*>& thread_list;
 };
 
 class WaitTreeModel : public QAbstractItemModel {

src/yuzu/main.cpp

@@ -1039,8 +1039,6 @@ bool GMainWindow::LoadROM(const QString& filename, std::size_t program_index) {
         std::make_unique<QtWebBrowser>(*this),         // Web Browser
     });
 
-    system.RegisterHostThread();
-
     const Core::System::ResultStatus result{
         system.Load(*render_window, filename.toStdString(), program_index)};