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General: Recover Prometheus project from harddrive failure

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This commit: Implements CPU Interrupts, Replaces Cycle Timing for Host 
Timing, Reworks the Kernel's Scheduler, Introduce Idle State and 
Suspended State, Recreates the bootmanager, Initializes Multicore 
system.
This commit is contained in:
Fernando Sahmkow 2020-02-24 22:04:12 -04:00
parent 0ea4a8bcc4
commit e31425df38
57 changed files with 1349 additions and 824 deletions
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6
src/common/thread.cpp
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@ -70,6 +70,12 @@ void SetCurrentThreadName(const char* name) {
}
#endif
#if defined(_WIN32)
void SetCurrentThreadName(const char* name) {
// Do Nothing on MingW
}
#endif
#endif
} // namespace Common

4
src/core/CMakeLists.txt
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@ -7,6 +7,8 @@ endif()
add_library(core STATIC
arm/arm_interface.h
arm/arm_interface.cpp
arm/cpu_interrupt_handler.cpp
arm/cpu_interrupt_handler.h
arm/exclusive_monitor.cpp
arm/exclusive_monitor.h
arm/unicorn/arm_unicorn.cpp
@ -547,8 +549,6 @@ add_library(core STATIC
hle/service/vi/vi_u.h
hle/service/wlan/wlan.cpp
hle/service/wlan/wlan.h
host_timing.cpp
host_timing.h
loader/deconstructed_rom_directory.cpp
loader/deconstructed_rom_directory.h
loader/elf.cpp

5
src/core/arm/arm_interface.h
View File

@ -18,11 +18,13 @@ enum class VMAPermission : u8;
namespace Core {
class System;
class CPUInterruptHandler;
/// Generic ARMv8 CPU interface
class ARM_Interface : NonCopyable {
public:
explicit ARM_Interface(System& system_) : system{system_} {}
explicit ARM_Interface(System& system_, CPUInterruptHandler& interrupt_handler)
: system{system_}, interrupt_handler{interrupt_handler} {}
virtual ~ARM_Interface() = default;
struct ThreadContext32 {
@ -175,6 +177,7 @@ public:
protected:
/// System context that this ARM interface is running under.
System& system;
CPUInterruptHandler& interrupt_handler;
};
} // namespace Core

29
src/core/arm/cpu_interrupt_handler.cpp Normal file
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@ -0,0 +1,29 @@
// Copyright 2020 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include "common/thread.h"
#include "core/arm/cpu_interrupt_handler.h"
namespace Core {
CPUInterruptHandler::CPUInterruptHandler() : is_interrupted{} {
interrupt_event = std::make_unique<Common::Event>();
}
CPUInterruptHandler::~CPUInterruptHandler() = default;
void CPUInterruptHandler::SetInterrupt(bool is_interrupted_) {
if (is_interrupted_) {
interrupt_event->Set();
}
this->is_interrupted = is_interrupted_;
}
void CPUInterruptHandler::AwaitInterrupt() {
interrupt_event->Wait();
}
} // namespace Core

39
src/core/arm/cpu_interrupt_handler.h Normal file
View File

@ -0,0 +1,39 @@
// Copyright 2020 yuzu emulator team
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <memory>
namespace Common {
class Event;
}
namespace Core {
class CPUInterruptHandler {
public:
CPUInterruptHandler();
~CPUInterruptHandler();
CPUInterruptHandler(const CPUInterruptHandler&) = delete;
CPUInterruptHandler& operator=(const CPUInterruptHandler&) = delete;
CPUInterruptHandler(CPUInterruptHandler&&) = default;
CPUInterruptHandler& operator=(CPUInterruptHandler&&) = default;
constexpr bool IsInterrupted() const {
return is_interrupted;
}
void SetInterrupt(bool is_interrupted);
void AwaitInterrupt();
private:
bool is_interrupted{};
std::unique_ptr<Common::Event> interrupt_event;
};
} // namespace Core

6
src/core/arm/dynarmic/arm_dynarmic_32.cpp
View File

@ -114,9 +114,9 @@ void ARM_Dynarmic_32::Step() {
jit->Step();
}
ARM_Dynarmic_32::ARM_Dynarmic_32(System& system, ExclusiveMonitor& exclusive_monitor,
std::size_t core_index)
: ARM_Interface{system}, cb(std::make_unique<DynarmicCallbacks32>(*this)),
ARM_Dynarmic_32::ARM_Dynarmic_32(System& system, CPUInterruptHandler& interrupt_handler,
ExclusiveMonitor& exclusive_monitor, std::size_t core_index)
: ARM_Interface{system, interrupt_handler}, cb(std::make_unique<DynarmicCallbacks32>(*this)),
cp15(std::make_shared<DynarmicCP15>(*this)), core_index{core_index},
exclusive_monitor{dynamic_cast<DynarmicExclusiveMonitor&>(exclusive_monitor)} {}

4
src/core/arm/dynarmic/arm_dynarmic_32.h
View File

@ -21,6 +21,7 @@ class Memory;
namespace Core {
class CPUInterruptHandler;
class DynarmicCallbacks32;
class DynarmicCP15;
class DynarmicExclusiveMonitor;
@ -28,7 +29,8 @@ class System;
class ARM_Dynarmic_32 final : public ARM_Interface {
public:
ARM_Dynarmic_32(System& system, ExclusiveMonitor& exclusive_monitor, std::size_t core_index);
ARM_Dynarmic_32(System& system, CPUInterruptHandler& interrupt_handler,
ExclusiveMonitor& exclusive_monitor, std::size_t core_index);
~ARM_Dynarmic_32() override;
void SetPC(u64 pc) override;

28
src/core/arm/dynarmic/arm_dynarmic_64.cpp
View File

@ -9,6 +9,7 @@
#include "common/logging/log.h"
#include "common/microprofile.h"
#include "common/page_table.h"
#include "core/arm/cpu_interrupt_handler.h"
#include "core/arm/dynarmic/arm_dynarmic_64.h"
#include "core/core.h"
#include "core/core_manager.h"
@ -108,23 +109,16 @@ public:
}
void AddTicks(u64 ticks) override {
// Divide the number of ticks by the amount of CPU cores. TODO(Subv): This yields only a
// rough approximation of the amount of executed ticks in the system, it may be thrown off
// if not all cores are doing a similar amount of work. Instead of doing this, we should
// device a way so that timing is consistent across all cores without increasing the ticks 4
// times.
u64 amortized_ticks = (ticks - num_interpreted_instructions) / Core::NUM_CPU_CORES;
// Always execute at least one tick.
amortized_ticks = std::max<u64>(amortized_ticks, 1);
parent.system.CoreTiming().AddTicks(amortized_ticks);
num_interpreted_instructions = 0;
/// We are using host timing, NOP
}
u64 GetTicksRemaining() override {
return std::max(parent.system.CoreTiming().GetDowncount(), s64{0});
if (!parent.interrupt_handler.IsInterrupted()) {
return 1000ULL;
}
return 0ULL;
}
u64 GetCNTPCT() override {
return Timing::CpuCyclesToClockCycles(parent.system.CoreTiming().GetTicks());
return parent.system.CoreTiming().GetClockTicks();
}
ARM_Dynarmic_64& parent;
@ -183,10 +177,10 @@ void ARM_Dynarmic_64::Step() {
cb->InterpreterFallback(jit->GetPC(), 1);
}
ARM_Dynarmic_64::ARM_Dynarmic_64(System& system, ExclusiveMonitor& exclusive_monitor,
std::size_t core_index)
: ARM_Interface{system}, cb(std::make_unique<DynarmicCallbacks64>(*this)),
inner_unicorn{system, ARM_Unicorn::Arch::AArch64}, core_index{core_index},
ARM_Dynarmic_64::ARM_Dynarmic_64(System& system, CPUInterruptHandler& interrupt_handler,
ExclusiveMonitor& exclusive_monitor, std::size_t core_index)
: ARM_Interface{system, interrupt_handler}, cb(std::make_unique<DynarmicCallbacks64>(*this)),
inner_unicorn{system, interrupt_handler, ARM_Unicorn::Arch::AArch64}, core_index{core_index},
exclusive_monitor{dynamic_cast<DynarmicExclusiveMonitor&>(exclusive_monitor)} {}
ARM_Dynarmic_64::~ARM_Dynarmic_64() = default;

4
src/core/arm/dynarmic/arm_dynarmic_64.h
View File

@ -22,12 +22,14 @@ class Memory;
namespace Core {
class DynarmicCallbacks64;
class CPUInterruptHandler;
class DynarmicExclusiveMonitor;
class System;
class ARM_Dynarmic_64 final : public ARM_Interface {
public:
ARM_Dynarmic_64(System& system, ExclusiveMonitor& exclusive_monitor, std::size_t core_index);
ARM_Dynarmic_64(System& system, CPUInterruptHandler& interrupt_handler,
ExclusiveMonitor& exclusive_monitor, std::size_t core_index);
~ARM_Dynarmic_64() override;
void SetPC(u64 pc) override;

14
src/core/arm/unicorn/arm_unicorn.cpp
View File

@ -6,6 +6,7 @@
#include <unicorn/arm64.h>
#include "common/assert.h"
#include "common/microprofile.h"
#include "core/arm/cpu_interrupt_handler.h"
#include "core/arm/unicorn/arm_unicorn.h"
#include "core/core.h"
#include "core/core_timing.h"
@ -62,7 +63,8 @@ static bool UnmappedMemoryHook(uc_engine* uc, uc_mem_type type, u64 addr, int si
return false;
}
ARM_Unicorn::ARM_Unicorn(System& system, Arch architecture) : ARM_Interface{system} {
ARM_Unicorn::ARM_Unicorn(System& system, CPUInterruptHandler& interrupt_handler, Arch architecture)
: ARM_Interface{system, interrupt_handler} {
const auto arch = architecture == Arch::AArch32 ? UC_ARCH_ARM : UC_ARCH_ARM64;
CHECKED(uc_open(arch, UC_MODE_ARM, &uc));
@ -160,8 +162,12 @@ void ARM_Unicorn::Run() {
if (GDBStub::IsServerEnabled()) {
ExecuteInstructions(std::max(4000000U, 0U));
} else {
ExecuteInstructions(
std::max(std::size_t(system.CoreTiming().GetDowncount()), std::size_t{0}));
while (true) {
if (interrupt_handler.IsInterrupted()) {
return;
}
ExecuteInstructions(10);
}
}
}
@ -183,8 +189,6 @@ void ARM_Unicorn::ExecuteInstructions(std::size_t num_instructions) {
UC_PROT_READ | UC_PROT_WRITE | UC_PROT_EXEC, page_buffer.data()));
CHECKED(uc_emu_start(uc, GetPC(), 1ULL << 63, 0, num_instructions));
CHECKED(uc_mem_unmap(uc, map_addr, page_buffer.size()));
system.CoreTiming().AddTicks(num_instructions);
if (GDBStub::IsServerEnabled()) {
if (last_bkpt_hit && last_bkpt.type == GDBStub::BreakpointType::Execute) {
uc_reg_write(uc, UC_ARM64_REG_PC, &last_bkpt.address);

3
src/core/arm/unicorn/arm_unicorn.h
View File

@ -11,6 +11,7 @@
namespace Core {
class CPUInterruptHandler;
class System;
class ARM_Unicorn final : public ARM_Interface {
@ -20,7 +21,7 @@ public:
AArch64, // 64-bit ARM
};
explicit ARM_Unicorn(System& system, Arch architecture);
explicit ARM_Unicorn(System& system, CPUInterruptHandler& interrupt_handler, Arch architecture);
~ARM_Unicorn() override;
void SetPC(u64 pc) override;

57
src/core/core.cpp
View File

@ -11,7 +11,6 @@
#include "common/string_util.h"
#include "core/arm/exclusive_monitor.h"
#include "core/core.h"
#include "core/core_manager.h"
#include "core/core_timing.h"
#include "core/cpu_manager.h"
#include "core/device_memory.h"
@ -117,23 +116,30 @@ struct System::Impl {
: kernel{system}, fs_controller{system}, memory{system},
cpu_manager{system}, reporter{system}, applet_manager{system} {}
CoreManager& CurrentCoreManager() {
return cpu_manager.GetCurrentCoreManager();
}
Kernel::PhysicalCore& CurrentPhysicalCore() {
const auto index = cpu_manager.GetActiveCoreIndex();
return kernel.PhysicalCore(index);
return kernel.CurrentPhysicalCore();
}
Kernel::PhysicalCore& GetPhysicalCore(std::size_t index) {
return kernel.PhysicalCore(index);
}
ResultStatus RunLoop(bool tight_loop) {
ResultStatus Run() {
status = ResultStatus::Success;
cpu_manager.RunLoop(tight_loop);
kernel.Suspend(false);
core_timing.SyncPause(false);
cpu_manager.Pause(false);
return status;
}
ResultStatus Pause() {
status = ResultStatus::Success;
kernel.Suspend(true);
core_timing.SyncPause(true);
cpu_manager.Pause(true);
return status;
}
@ -143,7 +149,7 @@ struct System::Impl {
device_memory = std::make_unique<Core::DeviceMemory>(system);
core_timing.Initialize();
core_timing.Initialize([&system]() { system.RegisterHostThread(); });
kernel.Initialize();
cpu_manager.Initialize();
@ -387,20 +393,24 @@ struct System::Impl {
System::System() : impl{std::make_unique<Impl>(*this)} {}
System::~System() = default;
CoreManager& System::CurrentCoreManager() {
return impl->CurrentCoreManager();
CpuManager& System::GetCpuManager() {
return impl->cpu_manager;
}
const CoreManager& System::CurrentCoreManager() const {
return impl->CurrentCoreManager();
const CpuManager& System::GetCpuManager() const {
return impl->cpu_manager;
}
System::ResultStatus System::RunLoop(bool tight_loop) {
return impl->RunLoop(tight_loop);
System::ResultStatus System::Run() {
return impl->Run();
}
System::ResultStatus System::Pause() {
return impl->Pause();
}
System::ResultStatus System::SingleStep() {
return RunLoop(false);
return ResultStatus::Success;
}
void System::InvalidateCpuInstructionCaches() {
@ -444,7 +454,9 @@ const ARM_Interface& System::CurrentArmInterface() const {
}
std::size_t System::CurrentCoreIndex() const {
return impl->cpu_manager.GetActiveCoreIndex();
std::size_t core = impl->kernel.GetCurrentHostThreadID();
ASSERT(core < Core::Hardware::NUM_CPU_CORES);
return core;
}
Kernel::Scheduler& System::CurrentScheduler() {
@ -497,15 +509,6 @@ const ARM_Interface& System::ArmInterface(std::size_t core_index) const {
return impl->GetPhysicalCore(core_index).ArmInterface();
}
CoreManager& System::GetCoreManager(std::size_t core_index) {
return impl->cpu_manager.GetCoreManager(core_index);
}
const CoreManager& System::GetCoreManager(std::size_t core_index) const {
ASSERT(core_index < NUM_CPU_CORES);
return impl->cpu_manager.GetCoreManager(core_index);
}
ExclusiveMonitor& System::Monitor() {
return impl->kernel.GetExclusiveMonitor();
}

34
src/core/core.h
View File

@ -90,7 +90,7 @@ class InterruptManager;
namespace Core {
class ARM_Interface;
class CoreManager;
class CpuManager;
class DeviceMemory;
class ExclusiveMonitor;
class FrameLimiter;
@ -136,16 +136,18 @@ public:
};
/**
* Run the core CPU loop
* This function runs the core for the specified number of CPU instructions before trying to
* update hardware. This is much faster than SingleStep (and should be equivalent), as the CPU
* is not required to do a full dispatch with each instruction. NOTE: the number of instructions
* requested is not guaranteed to run, as this will be interrupted preemptively if a hardware
* update is requested (e.g. on a thread switch).
* @param tight_loop If false, the CPU single-steps.
* @return Result status, indicating whether or not the operation succeeded.
* Run the OS and Application
* This function will start emulation and run the competent devices
*/
ResultStatus RunLoop(bool tight_loop = true);
ResultStatus Run();
/**
* Pause the OS and Application
* This function will pause emulation and stop the competent devices
*/
ResultStatus Pause();
/**
* Step the CPU one instruction
@ -215,11 +217,9 @@ public:
/// Gets a const reference to an ARM interface from the CPU core with the specified index
const ARM_Interface& ArmInterface(std::size_t core_index) const;
/// Gets a CPU interface to the CPU core with the specified index
CoreManager& GetCoreManager(std::size_t core_index);
CpuManager& GetCpuManager();
/// Gets a CPU interface to the CPU core with the specified index
const CoreManager& GetCoreManager(std::size_t core_index) const;
const CpuManager& GetCpuManager() const;
/// Gets a reference to the exclusive monitor
ExclusiveMonitor& Monitor();
@ -373,12 +373,6 @@ public:
private:
System();
/// Returns the currently running CPU core
CoreManager& CurrentCoreManager();
/// Returns the currently running CPU core
const CoreManager& CurrentCoreManager() const;
/**
* Initialize the emulated system.
* @param emu_window Reference to the host-system window used for video output and keyboard

4
src/core/core_manager.cpp
View File

@ -34,7 +34,6 @@ void CoreManager::RunLoop(bool tight_loop) {
// instead advance to the next event and try to yield to the next thread
if (Kernel::GetCurrentThread() == nullptr) {
LOG_TRACE(Core, "Core-{} idling", core_index);
core_timing.Idle();
} else {
if (tight_loop) {
physical_core.Run();
@ -42,7 +41,6 @@ void CoreManager::RunLoop(bool tight_loop) {
physical_core.Step();
}
}
core_timing.Advance();
Reschedule();
}
@ -59,7 +57,7 @@ void CoreManager::Reschedule() {
// Lock the global kernel mutex when we manipulate the HLE state
std::lock_guard lock(HLE::g_hle_lock);
global_scheduler.SelectThread(core_index);
// global_scheduler.SelectThread(core_index);
physical_core.Scheduler().TryDoContextSwitch();
}

212
src/core/core_timing.cpp
View File

@ -1,5 +1,5 @@
// Copyright 2008 Dolphin Emulator Project / 2017 Citra Emulator Project
// Licensed under GPLv2+
// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "core/core_timing.h"
@ -10,20 +10,16 @@
#include <tuple>
#include "common/assert.h"
#include "common/thread.h"
#include "core/core_timing_util.h"
#include "core/hardware_properties.h"
namespace Core::Timing {
constexpr int MAX_SLICE_LENGTH = 10000;
std::shared_ptr<EventType> CreateEvent(std::string name, TimedCallback&& callback) {
return std::make_shared<EventType>(std::move(callback), std::move(name));
}
struct CoreTiming::Event {
s64 time;
u64 time;
u64 fifo_order;
u64 userdata;
std::weak_ptr<EventType> type;
@ -39,51 +35,74 @@ struct CoreTiming::Event {
}
};
CoreTiming::CoreTiming() = default;
CoreTiming::CoreTiming() {
clock =
Common::CreateBestMatchingClock(Core::Hardware::BASE_CLOCK_RATE, Core::Hardware::CNTFREQ);
}
CoreTiming::~CoreTiming() = default;
void CoreTiming::Initialize() {
downcounts.fill(MAX_SLICE_LENGTH);
time_slice.fill(MAX_SLICE_LENGTH);
slice_length = MAX_SLICE_LENGTH;
global_timer = 0;
idled_cycles = 0;
current_context = 0;
// The time between CoreTiming being initialized and the first call to Advance() is considered
// the slice boundary between slice -1 and slice 0. Dispatcher loops must call Advance() before
// executing the first cycle of each slice to prepare the slice length and downcount for
// that slice.
is_global_timer_sane = true;
void CoreTiming::ThreadEntry(CoreTiming& instance) {
std::string name = "yuzu:HostTiming";
Common::SetCurrentThreadName(name.c_str());
instance.on_thread_init();
instance.ThreadLoop();
}
void CoreTiming::Initialize(std::function<void(void)>&& on_thread_init_) {
on_thread_init = std::move(on_thread_init_);
event_fifo_id = 0;
const auto empty_timed_callback = [](u64, s64) {};
ev_lost = CreateEvent("_lost_event", empty_timed_callback);
timer_thread = std::make_unique<std::thread>(ThreadEntry, std::ref(*this));
}
void CoreTiming::Shutdown() {
paused = true;
shutting_down = true;
event.Set();
timer_thread->join();
ClearPendingEvents();
timer_thread.reset();
has_started = false;
}
void CoreTiming::ScheduleEvent(s64 cycles_into_future, const std::shared_ptr<EventType>& event_type,
u64 userdata) {
std::lock_guard guard{inner_mutex};
const s64 timeout = GetTicks() + cycles_into_future;
void CoreTiming::Pause(bool is_paused) {
paused = is_paused;
}
// If this event needs to be scheduled before the next advance(), force one early
if (!is_global_timer_sane) {
ForceExceptionCheck(cycles_into_future);
void CoreTiming::SyncPause(bool is_paused) {
if (is_paused == paused && paused_set == paused) {
return;
}
Pause(is_paused);
event.Set();
while (paused_set != is_paused)
;
}
bool CoreTiming::IsRunning() const {
return !paused_set;
}
bool CoreTiming::HasPendingEvents() const {
return !(wait_set && event_queue.empty());
}
void CoreTiming::ScheduleEvent(s64 ns_into_future, const std::shared_ptr<EventType>& event_type,
u64 userdata) {
basic_lock.lock();
const u64 timeout = static_cast<u64>(GetGlobalTimeNs().count() + ns_into_future);
event_queue.emplace_back(Event{timeout, event_fifo_id++, userdata, event_type});
std::push_heap(event_queue.begin(), event_queue.end(), std::greater<>());
basic_lock.unlock();
event.Set();
}
void CoreTiming::UnscheduleEvent(const std::shared_ptr<EventType>& event_type, u64 userdata) {
std::lock_guard guard{inner_mutex};
basic_lock.lock();
const auto itr = std::remove_if(event_queue.begin(), event_queue.end(), [&](const Event& e) {
return e.type.lock().get() == event_type.get() && e.userdata == userdata;
});
@ -93,23 +112,23 @@ void CoreTiming::UnscheduleEvent(const std::shared_ptr<EventType>& event_type, u
event_queue.erase(itr, event_queue.end());
std::make_heap(event_queue.begin(), event_queue.end(), std::greater<>());
}
basic_lock.unlock();
}
u64 CoreTiming::GetTicks() const {
u64 ticks = static_cast<u64>(global_timer);
if (!is_global_timer_sane) {
ticks += accumulated_ticks;
}
return ticks;
void CoreTiming::AddTicks(std::size_t core_index, u64 ticks) {
ticks_count[core_index] += ticks;
}
u64 CoreTiming::GetIdleTicks() const {
return static_cast<u64>(idled_cycles);
void CoreTiming::ResetTicks(std::size_t core_index) {
ticks_count[core_index] = 0;
}
void CoreTiming::AddTicks(u64 ticks) {
accumulated_ticks += ticks;
downcounts[current_context] -= static_cast<s64>(ticks);
u64 CoreTiming::GetCPUTicks() const {
return clock->GetCPUCycles();
}
u64 CoreTiming::GetClockTicks() const {
return clock->GetClockCycles();
}
void CoreTiming::ClearPendingEvents() {
@ -117,7 +136,7 @@ void CoreTiming::ClearPendingEvents() {
}
void CoreTiming::RemoveEvent(const std::shared_ptr<EventType>& event_type) {
std::lock_guard guard{inner_mutex};
basic_lock.lock();
const auto itr = std::remove_if(event_queue.begin(), event_queue.end(), [&](const Event& e) {
return e.type.lock().get() == event_type.get();
@ -128,99 +147,64 @@ void CoreTiming::RemoveEvent(const std::shared_ptr<EventType>& event_type) {
event_queue.erase(itr, event_queue.end());
std::make_heap(event_queue.begin(), event_queue.end(), std::greater<>());
}
basic_lock.unlock();
}
void CoreTiming::ForceExceptionCheck(s64 cycles) {
cycles = std::max<s64>(0, cycles);
if (downcounts[current_context] <= cycles) {
return;
}
// downcount is always (much) smaller than MAX_INT so we can safely cast cycles to an int
// here. Account for cycles already executed by adjusting the g.slice_length
downcounts[current_context] = static_cast<int>(cycles);
}
std::optional<u64> CoreTiming::NextAvailableCore(const s64 needed_ticks) const {
const u64 original_context = current_context;
u64 next_context = (original_context + 1) % num_cpu_cores;
while (next_context != original_context) {
if (time_slice[next_context] >= needed_ticks) {
return {next_context};
} else if (time_slice[next_context] >= 0) {
return std::nullopt;
}
next_context = (next_context + 1) % num_cpu_cores;
}
return std::nullopt;
}
void CoreTiming::Advance() {
std::unique_lock<std::mutex> guard(inner_mutex);
const u64 cycles_executed = accumulated_ticks;
time_slice[current_context] = std::max<s64>(0, time_slice[current_context] - accumulated_ticks);
global_timer += cycles_executed;
is_global_timer_sane = true;
std::optional<u64> CoreTiming::Advance() {
advance_lock.lock();
basic_lock.lock();
global_timer = GetGlobalTimeNs().count();
while (!event_queue.empty() && event_queue.front().time <= global_timer) {
Event evt = std::move(event_queue.front());
std::pop_heap(event_queue.begin(), event_queue.end(), std::greater<>());
event_queue.pop_back();
inner_mutex.unlock();
basic_lock.unlock();
if (auto event_type{evt.type.lock()}) {
event_type->callback(evt.userdata, global_timer - evt.time);
}
inner_mutex.lock();
basic_lock.lock();
}
is_global_timer_sane = false;
// Still events left (scheduled in the future)
if (!event_queue.empty()) {
const s64 needed_ticks =
std::min<s64>(event_queue.front().time - global_timer, MAX_SLICE_LENGTH);
const auto next_core = NextAvailableCore(needed_ticks);
if (next_core) {
downcounts[*next_core] = needed_ticks;
const u64 next_time = event_queue.front().time - global_timer;
basic_lock.unlock();
advance_lock.unlock();
return next_time;
} else {
basic_lock.unlock();
advance_lock.unlock();
return std::nullopt;
}
}
void CoreTiming::ThreadLoop() {
has_started = true;
while (!shutting_down) {
while (!paused) {
paused_set = false;
const auto next_time = Advance();
if (next_time) {
std::chrono::nanoseconds next_time_ns = std::chrono::nanoseconds(*next_time);
event.WaitFor(next_time_ns);
} else {
wait_set = true;
event.Wait();
}
wait_set = false;
}
paused_set = true;
}
accumulated_ticks = 0;
downcounts[current_context] = time_slice[current_context];
}
void CoreTiming::ResetRun() {
downcounts.fill(MAX_SLICE_LENGTH);
time_slice.fill(MAX_SLICE_LENGTH);
current_context = 0;
// Still events left (scheduled in the future)
if (!event_queue.empty()) {
const s64 needed_ticks =
std::min<s64>(event_queue.front().time - global_timer, MAX_SLICE_LENGTH);
downcounts[current_context] = needed_ticks;
}
is_global_timer_sane = false;
accumulated_ticks = 0;
}
void CoreTiming::Idle() {
accumulated_ticks += downcounts[current_context];
idled_cycles += downcounts[current_context];
downcounts[current_context] = 0;
std::chrono::nanoseconds CoreTiming::GetGlobalTimeNs() const {
return clock->GetTimeNS();
}
std::chrono::microseconds CoreTiming::GetGlobalTimeUs() const {
return std::chrono::microseconds{GetTicks() * 1000000 / Hardware::BASE_CLOCK_RATE};
}
s64 CoreTiming::GetDowncount() const {
return downcounts[current_context];
return clock->GetTimeUS();
}
} // namespace Core::Timing

106
src/core/core_timing.h
View File

@ -1,19 +1,25 @@
// Copyright 2008 Dolphin Emulator Project / 2017 Citra Emulator Project
// Licensed under GPLv2+
// Copyright 2020 yuzu Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <atomic>
#include <chrono>
#include <functional>
#include <memory>
#include <mutex>
#include <optional>
#include <string>
#include <thread>
#include <vector>
#include "common/common_types.h"
#include "common/spin_lock.h"
#include "common/thread.h"
#include "common/threadsafe_queue.h"
#include "common/wall_clock.h"
#include "core/hardware_properties.h"
namespace Core::Timing {
@ -56,16 +62,30 @@ public:
/// CoreTiming begins at the boundary of timing slice -1. An initial call to Advance() is
/// required to end slice - 1 and start slice 0 before the first cycle of code is executed.
void Initialize();
void Initialize(std::function<void(void)>&& on_thread_init_);
/// Tears down all timing related functionality.
void Shutdown();
/// After the first Advance, the slice lengths and the downcount will be reduced whenever an
/// event is scheduled earlier than the current values.
///
/// Scheduling from a callback will not update the downcount until the Advance() completes.
void ScheduleEvent(s64 cycles_into_future, const std::shared_ptr<EventType>& event_type,
/// Pauses/Unpauses the execution of the timer thread.
void Pause(bool is_paused);
/// Pauses/Unpauses the execution of the timer thread and waits until paused.
void SyncPause(bool is_paused);
/// Checks if core timing is running.
bool IsRunning() const;
/// Checks if the timer thread has started.
bool HasStarted() const {
return has_started;
}
/// Checks if there are any pending time events.
bool HasPendingEvents() const;
/// Schedules an event in core timing
void ScheduleEvent(s64 ns_into_future, const std::shared_ptr<EventType>& event_type,
u64 userdata = 0);
void UnscheduleEvent(const std::shared_ptr<EventType>& event_type, u64 userdata);
@ -73,41 +93,24 @@ public:
/// We only permit one event of each type in the queue at a time.
void RemoveEvent(const std::shared_ptr<EventType>& event_type);
void ForceExceptionCheck(s64 cycles);
void AddTicks(std::size_t core_index, u64 ticks);
/// This should only be called from the emu thread, if you are calling it any other thread,
/// you are doing something evil
u64 GetTicks() const;
void ResetTicks(std::size_t core_index);
u64 GetIdleTicks() const;
/// Returns current time in emulated CPU cycles
u64 GetCPUTicks() const;
void AddTicks(u64 ticks);
/// Advance must be called at the beginning of dispatcher loops, not the end. Advance() ends
/// the previous timing slice and begins the next one, you must Advance from the previous
/// slice to the current one before executing any cycles. CoreTiming starts in slice -1 so an
/// Advance() is required to initialize the slice length before the first cycle of emulated
/// instructions is executed.
void Advance();
/// Pretend that the main CPU has executed enough cycles to reach the next event.
void Idle();
/// Returns current time in emulated in Clock cycles
u64 GetClockTicks() const;
/// Returns current time in microseconds.
std::chrono::microseconds GetGlobalTimeUs() const;
void ResetRun();
/// Returns current time in nanoseconds.
std::chrono::nanoseconds GetGlobalTimeNs() const;
s64 GetDowncount() const;
void SwitchContext(u64 new_context) {
current_context = new_context;
}
bool CanCurrentContextRun() const {
return time_slice[current_context] > 0;
}
std::optional<u64> NextAvailableCore(const s64 needed_ticks) const;
/// Checks for events manually and returns time in nanoseconds for next event, threadsafe.
std::optional<u64> Advance();
private:
struct Event;
@ -115,21 +118,14 @@ private:
/// Clear all pending events. This should ONLY be done on exit.
void ClearPendingEvents();
static constexpr u64 num_cpu_cores = 4;
static void ThreadEntry(CoreTiming& instance);
void ThreadLoop();
s64 global_timer = 0;
s64 idled_cycles = 0;
s64 slice_length = 0;
u64 accumulated_ticks = 0;
std::array<s64, num_cpu_cores> downcounts{};
// Slice of time assigned to each core per run.
std::array<s64, num_cpu_cores> time_slice{};
u64 current_context = 0;
std::unique_ptr<Common::WallClock> clock;
// Are we in a function that has been called from Advance()
// If events are scheduled from a function that gets called from Advance(),
// don't change slice_length and downcount.
bool is_global_timer_sane = false;
u64 global_timer = 0;
std::chrono::nanoseconds start_point;
// The queue is a min-heap using std::make_heap/push_heap/pop_heap.
// We don't use std::priority_queue because we need to be able to serialize, unserialize and
@ -139,8 +135,18 @@ private:
u64 event_fifo_id = 0;
std::shared_ptr<EventType> ev_lost;
Common::Event event{};
Common::SpinLock basic_lock{};
Common::SpinLock advance_lock{};
std::unique_ptr<std::thread> timer_thread;
std::atomic<bool> paused{};
std::atomic<bool> paused_set{};
std::atomic<bool> wait_set{};
std::atomic<bool> shutting_down{};
std::atomic<bool> has_started{};
std::function<void(void)> on_thread_init{};
std::mutex inner_mutex;
std::array<std::atomic<u64>, Core::Hardware::NUM_CPU_CORES> ticks_count{};
};
/// Creates a core timing event with the given name and callback.

196
src/core/cpu_manager.cpp
View File

@ -2,80 +2,192 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/fiber.h"
#include "common/thread.h"
#include "core/arm/exclusive_monitor.h"
#include "core/core.h"
#include "core/core_manager.h"
#include "core/core_timing.h"
#include "core/cpu_manager.h"
#include "core/gdbstub/gdbstub.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/physical_core.h"
#include "core/hle/kernel/scheduler.h"
#include "core/hle/kernel/thread.h"
namespace Core {
CpuManager::CpuManager(System& system) : system{system} {}
CpuManager::~CpuManager() = default;
void CpuManager::ThreadStart(CpuManager& cpu_manager, std::size_t core) {
cpu_manager.RunThread(core);
}
void CpuManager::Initialize() {
for (std::size_t index = 0; index < core_managers.size(); ++index) {
core_managers[index] = std::make_unique<CoreManager>(system, index);
running_mode = true;
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
core_data[core].host_thread =
std::make_unique<std::thread>(ThreadStart, std::ref(*this), core);
}
}
void CpuManager::Shutdown() {
for (auto& cpu_core : core_managers) {
cpu_core.reset();
running_mode = false;
Pause(false);
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
core_data[core].host_thread->join();
}
}
CoreManager& CpuManager::GetCoreManager(std::size_t index) {
return *core_managers.at(index);
void CpuManager::GuestThreadFunction(void* cpu_manager_) {
CpuManager* cpu_manager = static_cast<CpuManager*>(cpu_manager_);
cpu_manager->RunGuestThread();
}
const CoreManager& CpuManager::GetCoreManager(std::size_t index) const {
return *core_managers.at(index);
void CpuManager::IdleThreadFunction(void* cpu_manager_) {
CpuManager* cpu_manager = static_cast<CpuManager*>(cpu_manager_);
cpu_manager->RunIdleThread();
}
CoreManager& CpuManager::GetCurrentCoreManager() {
// Otherwise, use single-threaded mode active_core variable
return *core_managers[active_core];
void CpuManager::SuspendThreadFunction(void* cpu_manager_) {
CpuManager* cpu_manager = static_cast<CpuManager*>(cpu_manager_);
cpu_manager->RunSuspendThread();
}
const CoreManager& CpuManager::GetCurrentCoreManager() const {
// Otherwise, use single-threaded mode active_core variable
return *core_managers[active_core];
std::function<void(void*)> CpuManager::GetGuestThreadStartFunc() {
return std::function<void(void*)>(GuestThreadFunction);
}
void CpuManager::RunLoop(bool tight_loop) {
if (GDBStub::IsServerEnabled()) {
GDBStub::HandlePacket();
std::function<void(void*)> CpuManager::GetIdleThreadStartFunc() {
return std::function<void(void*)>(IdleThreadFunction);
}
// If the loop is halted and we want to step, use a tiny (1) number of instructions to
// execute. Otherwise, get out of the loop function.
if (GDBStub::GetCpuHaltFlag()) {
if (GDBStub::GetCpuStepFlag()) {
tight_loop = false;
} else {
return;
std::function<void(void*)> CpuManager::GetSuspendThreadStartFunc() {
return std::function<void(void*)>(SuspendThreadFunction);
}
void* CpuManager::GetStartFuncParamater() {
return static_cast<void*>(this);
}
void CpuManager::RunGuestThread() {
auto& kernel = system.Kernel();
{
auto& sched = kernel.CurrentScheduler();
sched.OnThreadStart();
}
while (true) {
auto& physical_core = kernel.CurrentPhysicalCore();
LOG_CRITICAL(Core_ARM, "Running Guest Thread");
physical_core.Idle();
LOG_CRITICAL(Core_ARM, "Leaving Guest Thread");
// physical_core.Run();
auto& scheduler = physical_core.Scheduler();
scheduler.TryDoContextSwitch();
}
}
void CpuManager::RunIdleThread() {
auto& kernel = system.Kernel();
while (true) {
auto& physical_core = kernel.CurrentPhysicalCore();
LOG_CRITICAL(Core_ARM, "Running Idle Thread");
physical_core.Idle();
auto& scheduler = physical_core.Scheduler();
scheduler.TryDoContextSwitch();
}
}
void CpuManager::RunSuspendThread() {
LOG_CRITICAL(Core_ARM, "Suspending Thread Entered");
auto& kernel = system.Kernel();
{
auto& sched = kernel.CurrentScheduler();
sched.OnThreadStart();
}
while (true) {
auto core = kernel.GetCurrentHostThreadID();
auto& scheduler = kernel.CurrentScheduler();
Kernel::Thread* current_thread = scheduler.GetCurrentThread();
LOG_CRITICAL(Core_ARM, "Suspending Core {}", core);
Common::Fiber::YieldTo(current_thread->GetHostContext(), core_data[core].host_context);
LOG_CRITICAL(Core_ARM, "Unsuspending Core {}", core);
ASSERT(scheduler.ContextSwitchPending());
ASSERT(core == kernel.GetCurrentHostThreadID());
scheduler.TryDoContextSwitch();
}
}
void CpuManager::Pause(bool paused) {
if (!paused) {
bool all_not_barrier = false;
while (!all_not_barrier) {
all_not_barrier = true;
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
all_not_barrier &=
!core_data[core].is_running.load() && core_data[core].initialized.load();
}
}
}
auto& core_timing = system.CoreTiming();
core_timing.ResetRun();
bool keep_running{};
do {
keep_running = false;
for (active_core = 0; active_core < NUM_CPU_CORES; ++active_core) {
core_timing.SwitchContext(active_core);
if (core_timing.CanCurrentContextRun()) {
core_managers[active_core]->RunLoop(tight_loop);
}
keep_running |= core_timing.CanCurrentContextRun();
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
core_data[core].enter_barrier->Set();
}
} while (keep_running);
if (GDBStub::IsServerEnabled()) {
GDBStub::SetCpuStepFlag(false);
if (paused_state.load()) {
bool all_barrier = false;
while (!all_barrier) {
all_barrier = true;
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
all_barrier &=
core_data[core].is_paused.load() && core_data[core].initialized.load();
}
}
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
core_data[core].exit_barrier->Set();
}
}
} else {
/// Wait until all cores are paused.
bool all_barrier = false;
while (!all_barrier) {
all_barrier = true;
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
all_barrier &=
core_data[core].is_paused.load() && core_data[core].initialized.load();
}
}
/// Don't release the barrier
}
paused_state = paused;
}
void CpuManager::RunThread(std::size_t core) {
/// Initialization
system.RegisterCoreThread(core);
std::string name = "yuzu:CoreHostThread_" + std::to_string(core);
Common::SetCurrentThreadName(name.c_str());
auto& data = core_data[core];
data.enter_barrier = std::make_unique<Common::Event>();
data.exit_barrier = std::make_unique<Common::Event>();
data.host_context = Common::Fiber::ThreadToFiber();
data.is_running = false;
data.initialized = true;
/// Running
while (running_mode) {
data.is_running = false;
data.enter_barrier->Wait();
auto& scheduler = system.Kernel().CurrentScheduler();
Kernel::Thread* current_thread = scheduler.GetCurrentThread();
data.is_running = true;
Common::Fiber::YieldTo(data.host_context, current_thread->GetHostContext());
data.is_running = false;
data.is_paused = true;
data.exit_barrier->Wait();
data.is_paused = false;
}
/// Time to cleanup
data.host_context->Exit();
data.enter_barrier.reset();
data.exit_barrier.reset();
data.initialized = false;
}
} // namespace Core

51
src/core/cpu_manager.h
View File

@ -5,12 +5,18 @@
#pragma once
#include <array>
#include <functional>
#include <memory>
#include <thread>
#include "core/hardware_properties.h"
namespace Common {
class Event;
class Fiber;
} // namespace Common
namespace Core {
class CoreManager;
class System;
class CpuManager {
@ -27,21 +33,40 @@ public:
void Initialize();
void Shutdown();
CoreManager& GetCoreManager(std::size_t index);
const CoreManager& GetCoreManager(std::size_t index) const;
void Pause(bool paused);
CoreManager& GetCurrentCoreManager();
const CoreManager& GetCurrentCoreManager() const;
std::size_t GetActiveCoreIndex() const {
return active_core;
}
void RunLoop(bool tight_loop);
std::function<void(void*)> GetGuestThreadStartFunc();
std::function<void(void*)> GetIdleThreadStartFunc();
std::function<void(void*)> GetSuspendThreadStartFunc();
void* GetStartFuncParamater();
private:
std::array<std::unique_ptr<CoreManager>, Hardware::NUM_CPU_CORES> core_managers;
std::size_t active_core{}; ///< Active core, only used in single thread mode
static void GuestThreadFunction(void* cpu_manager);
static void IdleThreadFunction(void* cpu_manager);
static void SuspendThreadFunction(void* cpu_manager);
void RunGuestThread();
void RunIdleThread();
void RunSuspendThread();
static void ThreadStart(CpuManager& cpu_manager, std::size_t core);
void RunThread(std::size_t core);
struct CoreData {
std::shared_ptr<Common::Fiber> host_context;
std::unique_ptr<Common::Event> enter_barrier;
std::unique_ptr<Common::Event> exit_barrier;
std::atomic<bool> is_running;
std::atomic<bool> is_paused;
std::atomic<bool> initialized;
std::unique_ptr<std::thread> host_thread;
};
std::atomic<bool> running_mode{};
std::atomic<bool> paused_state{};
std::array<CoreData, Core::Hardware::NUM_CPU_CORES> core_data{};
System& system;
};

84
src/core/hle/kernel/kernel.cpp
View File

@ -13,11 +13,13 @@
#include "common/assert.h"
#include "common/logging/log.h"
#include "common/thread.h"
#include "core/arm/arm_interface.h"
#include "core/arm/exclusive_monitor.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/core_timing_util.h"
#include "core/cpu_manager.h"
#include "core/device_memory.h"
#include "core/hardware_properties.h"
#include "core/hle/kernel/client_port.h"
@ -117,7 +119,9 @@ struct KernelCore::Impl {
InitializeSystemResourceLimit(kernel);
InitializeMemoryLayout();
InitializeThreads();
InitializePreemption();
InitializePreemption(kernel);
InitializeSchedulers();
InitializeSuspendThreads();
}
void Shutdown() {
@ -155,6 +159,12 @@ struct KernelCore::Impl {
}
}
void InitializeSchedulers() {
for (std::size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
cores[i].Scheduler().Initialize();
}
}
// Creates the default system resource limit
void InitializeSystemResourceLimit(KernelCore& kernel) {
system_resource_limit = ResourceLimit::Create(kernel);
@ -178,10 +188,13 @@ struct KernelCore::Impl {
Core::Timing::CreateEvent("ThreadWakeupCallback", ThreadWakeupCallback);
}
void InitializePreemption() {
preemption_event =
Core::Timing::CreateEvent("PreemptionCallback", [this](u64 userdata, s64 cycles_late) {
global_scheduler.PreemptThreads();
void InitializePreemption(KernelCore& kernel) {
preemption_event = Core::Timing::CreateEvent(
"PreemptionCallback", [this, &kernel](u64 userdata, s64 cycles_late) {
{
SchedulerLock lock(kernel);
global_scheduler.PreemptThreads();
}
s64 time_interval = Core::Timing::msToCycles(std::chrono::milliseconds(10));
system.CoreTiming().ScheduleEvent(time_interval, preemption_event);
});
@ -190,6 +203,20 @@ struct KernelCore::Impl {
system.CoreTiming().ScheduleEvent(time_interval, preemption_event);
}
void InitializeSuspendThreads() {
for (std::size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
std::string name = "Suspend Thread Id:" + std::to_string(i);
std::function<void(void*)> init_func =
system.GetCpuManager().GetSuspendThreadStartFunc();
void* init_func_parameter = system.GetCpuManager().GetStartFuncParamater();
ThreadType type =
static_cast<ThreadType>(THREADTYPE_KERNEL | THREADTYPE_HLE | THREADTYPE_SUSPEND);
auto thread_res = Thread::Create(system, type, 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();
}
}
void MakeCurrentProcess(Process* process) {
current_process = process;
@ -201,7 +228,10 @@ struct KernelCore::Impl {
core.SetIs64Bit(process->Is64BitProcess());
}
system.Memory().SetCurrentPageTable(*process);
u32 core_id = GetCurrentHostThreadID();
if (core_id < Core::Hardware::NUM_CPU_CORES) {
system.Memory().SetCurrentPageTable(*process, core_id);
}
}
void RegisterCoreThread(std::size_t core_id) {
@ -219,7 +249,9 @@ struct KernelCore::Impl {
std::unique_lock lock{register_thread_mutex};
const std::thread::id this_id = std::this_thread::get_id();
const auto it = host_thread_ids.find(this_id);
ASSERT(it == host_thread_ids.end());
if (it != host_thread_ids.end()) {
return;
}
host_thread_ids[this_id] = registered_thread_ids++;
}
@ -343,6 +375,8 @@ struct KernelCore::Impl {
std::shared_ptr<Kernel::SharedMemory> irs_shared_mem;
std::shared_ptr<Kernel::SharedMemory> time_shared_mem;
std::array<std::shared_ptr<Thread>, Core::Hardware::NUM_CPU_CORES> suspend_threads{};
// System context
Core::System& system;
};
@ -412,6 +446,26 @@ const Kernel::PhysicalCore& KernelCore::PhysicalCore(std::size_t id) const {
return impl->cores[id];
}
Kernel::PhysicalCore& KernelCore::CurrentPhysicalCore() {
u32 core_id = impl->GetCurrentHostThreadID();
ASSERT(core_id < Core::Hardware::NUM_CPU_CORES);
return impl->cores[core_id];
}
const Kernel::PhysicalCore& KernelCore::CurrentPhysicalCore() const {
u32 core_id = impl->GetCurrentHostThreadID();
ASSERT(core_id < Core::Hardware::NUM_CPU_CORES);
return impl->cores[core_id];
}
Kernel::Scheduler& KernelCore::CurrentScheduler() {
return CurrentPhysicalCore().Scheduler();
}
const Kernel::Scheduler& KernelCore::CurrentScheduler() const {
return CurrentPhysicalCore().Scheduler();
}
Kernel::Synchronization& KernelCore::Synchronization() {
return impl->synchronization;
}
@ -557,4 +611,20 @@ const Kernel::SharedMemory& KernelCore::GetTimeSharedMem() const {
return *impl->time_shared_mem;
}
void KernelCore::Suspend(bool in_suspention) {
const bool should_suspend = exception_exited || in_suspention;
{
SchedulerLock lock(*this);
ThreadStatus status = should_suspend ? ThreadStatus::Ready : ThreadStatus::WaitSleep;
for (std::size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
impl->suspend_threads[i]->SetStatus(status);
}
}
}
void KernelCore::ExceptionalExit() {
exception_exited = true;
Suspend(true);
}
} // namespace Kernel

19
src/core/hle/kernel/kernel.h
View File

@ -110,6 +110,18 @@ public:
/// Gets the an instance of the respective physical CPU core.
const Kernel::PhysicalCore& PhysicalCore(std::size_t id) const;
/// Gets the sole instance of the Scheduler at the current running core.
Kernel::Scheduler& CurrentScheduler();
/// Gets the sole instance of the Scheduler at the current running core.
const Kernel::Scheduler& CurrentScheduler() const;
/// Gets the an instance of the current physical CPU core.
Kernel::PhysicalCore& CurrentPhysicalCore();
/// Gets the an instance of the current physical CPU core.
const Kernel::PhysicalCore& CurrentPhysicalCore() const;
/// Gets the an instance of the Synchronization Interface.
Kernel::Synchronization& Synchronization();
@ -191,6 +203,12 @@ public:
/// Gets the shared memory object for Time services.
const Kernel::SharedMemory& GetTimeSharedMem() const;
/// Suspend/unsuspend the OS.
void Suspend(bool in_suspention);
/// Exceptional exit the OS.
void ExceptionalExit();
private:
friend class Object;
friend class Process;
@ -219,6 +237,7 @@ private:
struct Impl;
std::unique_ptr<Impl> impl;
bool exception_exited{};
};
} // namespace Kernel

37
src/core/hle/kernel/physical_core.cpp
View File

@ -2,12 +2,15 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/assert.h"
#include "common/logging/log.h"
#include "common/spin_lock.h"
#include "core/arm/arm_interface.h"
#ifdef ARCHITECTURE_x86_64
#include "core/arm/dynarmic/arm_dynarmic_32.h"
#include "core/arm/dynarmic/arm_dynarmic_64.h"
#endif
#include "core/arm/cpu_interrupt_handler.h"
#include "core/arm/exclusive_monitor.h"
#include "core/arm/unicorn/arm_unicorn.h"
#include "core/core.h"
@ -19,21 +22,23 @@ namespace Kernel {
PhysicalCore::PhysicalCore(Core::System& system, std::size_t id,
Core::ExclusiveMonitor& exclusive_monitor)
: core_index{id} {
: interrupt_handler{}, core_index{id} {
#ifdef ARCHITECTURE_x86_64
arm_interface_32 =
std::make_unique<Core::ARM_Dynarmic_32>(system, exclusive_monitor, core_index);
arm_interface_64 =
std::make_unique<Core::ARM_Dynarmic_64>(system, exclusive_monitor, core_index);
arm_interface_32 = std::make_unique<Core::ARM_Dynarmic_32>(system, interrupt_handler,
exclusive_monitor, core_index);
arm_interface_64 = std::make_unique<Core::ARM_Dynarmic_64>(system, interrupt_handler,
exclusive_monitor, core_index);
#else
using Core::ARM_Unicorn;
arm_interface_32 = std::make_unique<ARM_Unicorn>(system, ARM_Unicorn::Arch::AArch32);
arm_interface_64 = std::make_unique<ARM_Unicorn>(system, ARM_Unicorn::Arch::AArch64);
arm_interface_32 =
std::make_unique<ARM_Unicorn>(system, interrupt_handler, ARM_Unicorn::Arch::AArch32);
arm_interface_64 =
std::make_unique<ARM_Unicorn>(system, interrupt_handler, ARM_Unicorn::Arch::AArch64);
LOG_WARNING(Core, "CPU JIT requested, but Dynarmic not available");
#endif
scheduler = std::make_unique<Kernel::Scheduler>(system, core_index);
guard = std::make_unique<Common::SpinLock>();
}
PhysicalCore::~PhysicalCore() = default;
@ -47,6 +52,10 @@ void PhysicalCore::Step() {
arm_interface->Step();
}
void PhysicalCore::Idle() {
interrupt_handler.AwaitInterrupt();
}
void PhysicalCore::Stop() {
arm_interface->PrepareReschedule();
}
@ -63,4 +72,16 @@ void PhysicalCore::SetIs64Bit(bool is_64_bit) {
}
}
void PhysicalCore::Interrupt() {
guard->lock();
interrupt_handler.SetInterrupt(true);
guard->unlock();
}
void PhysicalCore::ClearInterrupt() {
guard->lock();
interrupt_handler.SetInterrupt(false);
guard->unlock();
}
} // namespace Kernel

21
src/core/hle/kernel/physical_core.h
View File

@ -7,6 +7,12 @@
#include <cstddef>
#include <memory>
#include "core/arm/cpu_interrupt_handler.h"
namespace Common {
class SpinLock;
}
namespace Kernel {
class Scheduler;
} // namespace Kernel
@ -32,11 +38,24 @@ public:
/// Execute current jit state
void Run();
/// Set this core in IdleState.
void Idle();
/// Execute a single instruction in current jit.
void Step();
/// Stop JIT execution/exit
void Stop();
/// Interrupt this physical core.
void Interrupt();
/// Clear this core's interrupt
void ClearInterrupt();
/// Check if this core is interrupted
bool IsInterrupted() const {
return interrupt_handler.IsInterrupted();
}
// Shutdown this physical core.
void Shutdown();
@ -71,11 +90,13 @@ public:
void SetIs64Bit(bool is_64_bit);
private:
Core::CPUInterruptHandler interrupt_handler;
std::size_t core_index;
std::unique_ptr<Core::ARM_Interface> arm_interface_32;
std::unique_ptr<Core::ARM_Interface> arm_interface_64;
std::unique_ptr<Kernel::Scheduler> scheduler;
Core::ARM_Interface* arm_interface{};
std::unique_ptr<Common::SpinLock> guard;
};
} // namespace Kernel

17
src/core/hle/kernel/process.cpp
View File

@ -30,14 +30,15 @@ namespace {
/**
* Sets up the primary application thread
*
* @param system The system instance to create the main thread under.
* @param owner_process The parent process for the main thread
* @param kernel The kernel instance to create the main thread under.
* @param priority The priority to give the main thread
*/
void SetupMainThread(Process& owner_process, KernelCore& kernel, u32 priority, VAddr stack_top) {
void SetupMainThread(Core::System& system, Process& owner_process, u32 priority, VAddr stack_top) {
const VAddr entry_point = owner_process.PageTable().GetCodeRegionStart();
auto thread_res = Thread::Create(kernel, "main", entry_point, priority, 0,
owner_process.GetIdealCore(), stack_top, owner_process);
ThreadType type = THREADTYPE_USER;
auto thread_res = Thread::Create(system, type, "main", entry_point, priority, 0,
owner_process.GetIdealCore(), stack_top, &owner_process);
std::shared_ptr<Thread> thread = std::move(thread_res).Unwrap();
@ -48,8 +49,12 @@ void SetupMainThread(Process& owner_process, KernelCore& kernel, u32 priority, V
thread->GetContext32().cpu_registers[1] = thread_handle;
thread->GetContext64().cpu_registers[1] = thread_handle;
auto& kernel = system.Kernel();
// Threads by default are dormant, wake up the main thread so it runs when the scheduler fires
thread->ResumeFromWait();
{
SchedulerLock lock{kernel};
thread->SetStatus(ThreadStatus::Ready);
}
}
} // Anonymous namespace
@ -294,7 +299,7 @@ void Process::Run(s32 main_thread_priority, u64 stack_size) {
ChangeStatus(ProcessStatus::Running);
SetupMainThread(*this, kernel, main_thread_priority, main_thread_stack_top);
SetupMainThread(system, *this, main_thread_priority, main_thread_stack_top);
resource_limit->Reserve(ResourceType::Threads, 1);
resource_limit->Reserve(ResourceType::PhysicalMemory, main_thread_stack_size);
}

419
src/core/hle/kernel/scheduler.cpp
View File

@ -11,11 +11,15 @@
#include <utility>
#include "common/assert.h"
#include "common/bit_util.h"
#include "common/fiber.h"
#include "common/logging/log.h"
#include "core/arm/arm_interface.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/cpu_manager.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/physical_core.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/scheduler.h"
#include "core/hle/kernel/time_manager.h"
@ -27,78 +31,108 @@ GlobalScheduler::GlobalScheduler(KernelCore& kernel) : kernel{kernel} {}
GlobalScheduler::~GlobalScheduler() = default;
void GlobalScheduler::AddThread(std::shared_ptr<Thread> thread) {
global_list_guard.lock();
thread_list.push_back(std::move(thread));
global_list_guard.unlock();
}
void GlobalScheduler::RemoveThread(std::shared_ptr<Thread> thread) {
global_list_guard.lock();
thread_list.erase(std::remove(thread_list.begin(), thread_list.end(), thread),
thread_list.end());
global_list_guard.unlock();
}
void GlobalScheduler::UnloadThread(std::size_t core) {
Scheduler& sched = kernel.Scheduler(core);
sched.UnloadThread();
}
void GlobalScheduler::SelectThread(std::size_t core) {
u32 GlobalScheduler::SelectThreads() {
const auto update_thread = [](Thread* thread, Scheduler& sched) {
sched.guard.lock();
if (thread != sched.selected_thread.get()) {
if (thread == nullptr) {
++sched.idle_selection_count;
}
sched.selected_thread = SharedFrom(thread);
}
sched.is_context_switch_pending = sched.selected_thread != sched.current_thread;
const bool reschedule_pending = sched.selected_thread != sched.current_thread;
sched.is_context_switch_pending = reschedule_pending;
std::atomic_thread_fence(std::memory_order_seq_cst);
sched.guard.unlock();
return reschedule_pending;
};
Scheduler& sched = kernel.Scheduler(core);
Thread* current_thread = nullptr;
if (!is_reselection_pending.load()) {
return 0;
}
std::array<Thread*, Core::Hardware::NUM_CPU_CORES> top_threads{};
u32 idle_cores{};
// Step 1: Get top thread in schedule queue.
current_thread = scheduled_queue[core].empty() ? nullptr : scheduled_queue[core].front();
if (current_thread) {
update_thread(current_thread, sched);
return;
}
// Step 2: Try selecting a suggested thread.
Thread* winner = nullptr;
std::set<s32> sug_cores;
for (auto thread : suggested_queue[core]) {
s32 this_core = thread->GetProcessorID();
Thread* thread_on_core = nullptr;
if (this_core >= 0) {
thread_on_core = scheduled_queue[this_core].front();
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
Thread* top_thread =
scheduled_queue[core].empty() ? nullptr : scheduled_queue[core].front();
if (top_thread != nullptr) {
// TODO(Blinkhawk): Implement Thread Pinning
} else {
idle_cores |= (1ul << core);
}
if (this_core < 0 || thread != thread_on_core) {
winner = thread;
break;
}
sug_cores.insert(this_core);
top_threads[core] = top_thread;
}
// if we got a suggested thread, select it, else do a second pass.
if (winner && winner->GetPriority() > 2) {
if (winner->IsRunning()) {
UnloadThread(static_cast<u32>(winner->GetProcessorID()));
}
TransferToCore(winner->GetPriority(), static_cast<s32>(core), winner);
update_thread(winner, sched);
return;
}
// Step 3: Select a suggested thread from another core
for (auto& src_core : sug_cores) {
auto it = scheduled_queue[src_core].begin();
it++;
if (it != scheduled_queue[src_core].end()) {
Thread* thread_on_core = scheduled_queue[src_core].front();
Thread* to_change = *it;
if (thread_on_core->IsRunning() || to_change->IsRunning()) {
UnloadThread(static_cast<u32>(src_core));
while (idle_cores != 0) {
u32 core_id = Common::CountTrailingZeroes32(idle_cores);
if (!suggested_queue[core_id].empty()) {
std::array<s32, Core::Hardware::NUM_CPU_CORES> migration_candidates{};
std::size_t num_candidates = 0;
auto iter = suggested_queue[core_id].begin();
Thread* suggested = nullptr;
// Step 2: Try selecting a suggested thread.
while (iter != suggested_queue[core_id].end()) {
suggested = *iter;
iter++;
s32 suggested_core_id = suggested->GetProcessorID();
Thread* top_thread =
suggested_core_id > 0 ? top_threads[suggested_core_id] : nullptr;
if (top_thread != suggested) {
if (top_thread != nullptr &&
top_thread->GetPriority() < THREADPRIO_MAX_CORE_MIGRATION) {
suggested = nullptr;
break;
// There's a too high thread to do core migration, cancel
}
TransferToCore(suggested->GetPriority(), static_cast<s32>(core_id), suggested);
break;
}
migration_candidates[num_candidates++] = suggested_core_id;
}
TransferToCore(thread_on_core->GetPriority(), static_cast<s32>(core), thread_on_core);
current_thread = thread_on_core;
break;
// Step 3: Select a suggested thread from another core
if (suggested == nullptr) {
for (std::size_t i = 0; i < num_candidates; i++) {
s32 candidate_core = migration_candidates[i];
suggested = top_threads[candidate_core];
auto it = scheduled_queue[candidate_core].begin();
it++;
Thread* next = it != scheduled_queue[candidate_core].end() ? *it : nullptr;
if (next != nullptr) {
TransferToCore(suggested->GetPriority(), static_cast<s32>(core_id),
suggested);
top_threads[candidate_core] = next;
break;
}
}
}
top_threads[core_id] = suggested;
}
idle_cores &= ~(1ul << core_id);
}
u32 cores_needing_context_switch{};
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
Scheduler& sched = kernel.Scheduler(core);
if (update_thread(top_threads[core], sched)) {
cores_needing_context_switch |= (1ul << core);
}
}
update_thread(current_thread, sched);
return cores_needing_context_switch;
}
bool GlobalScheduler::YieldThread(Thread* yielding_thread) {
@ -153,9 +187,6 @@ bool GlobalScheduler::YieldThreadAndBalanceLoad(Thread* yielding_thread) {
if (winner != nullptr) {
if (winner != yielding_thread) {
if (winner->IsRunning()) {
UnloadThread(static_cast<u32>(winner->GetProcessorID()));
}
TransferToCore(winner->GetPriority(), s32(core_id), winner);
}
} else {
@ -195,9 +226,6 @@ bool GlobalScheduler::YieldThreadAndWaitForLoadBalancing(Thread* yielding_thread
}
if (winner != nullptr) {
if (winner != yielding_thread) {
if (winner->IsRunning()) {
UnloadThread(static_cast<u32>(winner->GetProcessorID()));
}
TransferToCore(winner->GetPriority(), static_cast<s32>(core_id), winner);
}
} else {
@ -213,7 +241,9 @@ void GlobalScheduler::PreemptThreads() {
const u32 priority = preemption_priorities[core_id];
if (scheduled_queue[core_id].size(priority) > 0) {
scheduled_queue[core_id].front(priority)->IncrementYieldCount();
if (scheduled_queue[core_id].size(priority) > 1) {
scheduled_queue[core_id].front(priority)->IncrementYieldCount();
}
scheduled_queue[core_id].yield(priority);
if (scheduled_queue[core_id].size(priority) > 1) {
scheduled_queue[core_id].front(priority)->IncrementYieldCount();
@ -247,9 +277,6 @@ void GlobalScheduler::PreemptThreads() {
}
if (winner != nullptr) {
if (winner->IsRunning()) {
UnloadThread(static_cast<u32>(winner->GetProcessorID()));
}
TransferToCore(winner->GetPriority(), s32(core_id), winner);
current_thread =
winner->GetPriority() <= current_thread->GetPriority() ? winner : current_thread;
@ -280,9 +307,6 @@ void GlobalScheduler::PreemptThreads() {
}
if (winner != nullptr) {
if (winner->IsRunning()) {
UnloadThread(static_cast<u32>(winner->GetProcessorID()));
}
TransferToCore(winner->GetPriority(), s32(core_id), winner);
current_thread = winner;
}
@ -292,6 +316,28 @@ void GlobalScheduler::PreemptThreads() {
}
}
void GlobalScheduler::EnableInterruptAndSchedule(u32 cores_pending_reschedule,
Core::EmuThreadHandle global_thread) {
u32 current_core = global_thread.host_handle;
bool must_context_switch = global_thread.guest_handle != InvalidHandle &&
(current_core < Core::Hardware::NUM_CPU_CORES);
while (cores_pending_reschedule != 0) {
u32 core = Common::CountTrailingZeroes32(cores_pending_reschedule);
ASSERT(core < Core::Hardware::NUM_CPU_CORES);
if (!must_context_switch || core != current_core) {
auto& phys_core = kernel.PhysicalCore(core);
phys_core.Interrupt();
} else {
must_context_switch = true;
}
cores_pending_reschedule &= ~(1ul << core);
}
if (must_context_switch) {
auto& core_scheduler = kernel.CurrentScheduler();
core_scheduler.TryDoContextSwitch();
}
}
void GlobalScheduler::Suggest(u32 priority, std::size_t core, Thread* thread) {
suggested_queue[core].add(thread, priority);
}
@ -349,6 +395,108 @@ bool GlobalScheduler::AskForReselectionOrMarkRedundant(Thread* current_thread,
}
}
void GlobalScheduler::AdjustSchedulingOnStatus(Thread* thread, u32 old_flags) {
if (old_flags == thread->scheduling_state) {
return;
}
if (static_cast<ThreadSchedStatus>(old_flags & static_cast<u32>(ThreadSchedMasks::LowMask)) ==
ThreadSchedStatus::Runnable) {
// In this case the thread was running, now it's pausing/exitting
if (thread->processor_id >= 0) {
Unschedule(thread->current_priority, static_cast<u32>(thread->processor_id), thread);
}
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
if (core != static_cast<u32>(thread->processor_id) &&
((thread->affinity_mask >> core) & 1) != 0) {
Unsuggest(thread->current_priority, core, thread);
}
}
} else if (thread->GetSchedulingStatus() == ThreadSchedStatus::Runnable) {
// The thread is now set to running from being stopped
if (thread->processor_id >= 0) {
Schedule(thread->current_priority, static_cast<u32>(thread->processor_id), thread);
}
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
if (core != static_cast<u32>(thread->processor_id) &&
((thread->affinity_mask >> core) & 1) != 0) {
Suggest(thread->current_priority, core, thread);
}
}
}
SetReselectionPending();
}
void GlobalScheduler::AdjustSchedulingOnPriority(Thread* thread, u32 old_priority) {
if (thread->GetSchedulingStatus() != ThreadSchedStatus::Runnable) {
return;
}
if (thread->processor_id >= 0) {
Unschedule(old_priority, static_cast<u32>(thread->processor_id), thread);
}
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
if (core != static_cast<u32>(thread->processor_id) &&
((thread->affinity_mask >> core) & 1) != 0) {
Unsuggest(old_priority, core, thread);
}
}
if (thread->processor_id >= 0) {
// TODO(Blinkhawk): compare it with current thread running on current core, instead of
// checking running
if (thread->IsRunning()) {
SchedulePrepend(thread->current_priority, static_cast<u32>(thread->processor_id),
thread);
} else {
Schedule(thread->current_priority, static_cast<u32>(thread->processor_id), thread);
}
}
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
if (core != static_cast<u32>(thread->processor_id) &&
((thread->affinity_mask >> core) & 1) != 0) {
Suggest(thread->current_priority, core, thread);
}
}
thread->IncrementYieldCount();
SetReselectionPending();
}
void GlobalScheduler::AdjustSchedulingOnAffinity(Thread* thread, u64 old_affinity_mask,
s32 old_core) {
if (thread->GetSchedulingStatus() != ThreadSchedStatus::Runnable ||
thread->current_priority >= THREADPRIO_COUNT) {
return;
}
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
if (((old_affinity_mask >> core) & 1) != 0) {
if (core == static_cast<u32>(old_core)) {
Unschedule(thread->current_priority, core, thread);
} else {
Unsuggest(thread->current_priority, core, thread);
}
}
}
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
if (((thread->affinity_mask >> core) & 1) != 0) {
if (core == static_cast<u32>(thread->processor_id)) {
Schedule(thread->current_priority, core, thread);
} else {
Suggest(thread->current_priority, core, thread);
}
}
}
thread->IncrementYieldCount();
SetReselectionPending();
}
void GlobalScheduler::Shutdown() {
for (std::size_t core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
scheduled_queue[core].clear();
@ -374,13 +522,12 @@ void GlobalScheduler::Unlock() {
ASSERT(scope_lock > 0);
return;
}
for (std::size_t i = 0; i < Core::Hardware::NUM_CPU_CORES; i++) {
SelectThread(i);
}
u32 cores_pending_reschedule = SelectThreads();
Core::EmuThreadHandle leaving_thread = current_owner;
current_owner = Core::EmuThreadHandle::InvalidHandle();
scope_lock = 1;
inner_lock.unlock();
// TODO(Blinkhawk): Setup the interrupts and change context on current core.
EnableInterruptAndSchedule(cores_pending_reschedule, leaving_thread);
}
Scheduler::Scheduler(Core::System& system, std::size_t core_id)
@ -393,56 +540,83 @@ bool Scheduler::HaveReadyThreads() const {
}
Thread* Scheduler::GetCurrentThread() const {
return current_thread.get();
if (current_thread) {
return current_thread.get();
}
return idle_thread.get();
}
Thread* Scheduler::GetSelectedThread() const {
return selected_thread.get();
}
void Scheduler::SelectThreads() {
system.GlobalScheduler().SelectThread(core_id);
}
u64 Scheduler::GetLastContextSwitchTicks() const {
return last_context_switch_time;
}
void Scheduler::TryDoContextSwitch() {
auto& phys_core = system.Kernel().CurrentPhysicalCore();
if (phys_core.IsInterrupted()) {
phys_core.ClearInterrupt();
}
guard.lock();
if (is_context_switch_pending) {
SwitchContext();
} else {
guard.unlock();
}
}
void Scheduler::UnloadThread() {
Thread* const previous_thread = GetCurrentThread();
Process* const previous_process = system.Kernel().CurrentProcess();
void Scheduler::OnThreadStart() {
SwitchContextStep2();
}
UpdateLastContextSwitchTime(previous_thread, previous_process);
void Scheduler::SwitchContextStep2() {
Thread* previous_thread = current_thread.get();
Thread* new_thread = selected_thread.get();
// Save context for previous thread
if (previous_thread) {
system.ArmInterface(core_id).SaveContext(previous_thread->GetContext32());
system.ArmInterface(core_id).SaveContext(previous_thread->GetContext64());
// Save the TPIDR_EL0 system register in case it was modified.
previous_thread->SetTPIDR_EL0(system.ArmInterface(core_id).GetTPIDR_EL0());
// Load context of new thread
Process* const previous_process =
previous_thread != nullptr ? previous_thread->GetOwnerProcess() : nullptr;
if (previous_thread->GetStatus() == ThreadStatus::Running) {
// This is only the case when a reschedule is triggered without the current thread
// yielding execution (i.e. an event triggered, system core time-sliced, etc)
previous_thread->SetStatus(ThreadStatus::Ready);
if (new_thread) {
new_thread->context_guard.lock();
ASSERT_MSG(new_thread->GetProcessorID() == s32(this->core_id),
"Thread must be assigned to this core.");
ASSERT_MSG(new_thread->GetStatus() == ThreadStatus::Ready,
"Thread must be ready to become running.");
// Cancel any outstanding wakeup events for this thread
current_thread = SharedFrom(new_thread);
new_thread->SetStatus(ThreadStatus::Running);
new_thread->SetIsRunning(true);
auto* const thread_owner_process = current_thread->GetOwnerProcess();
if (previous_process != thread_owner_process && thread_owner_process != nullptr) {
system.Kernel().MakeCurrentProcess(thread_owner_process);
}
previous_thread->SetIsRunning(false);
if (!new_thread->IsHLEThread()) {
auto& cpu_core = system.ArmInterface(core_id);
cpu_core.LoadContext(new_thread->GetContext32());
cpu_core.LoadContext(new_thread->GetContext64());
cpu_core.SetTlsAddress(new_thread->GetTLSAddress());
cpu_core.SetTPIDR_EL0(new_thread->GetTPIDR_EL0());
}
} else {
current_thread = nullptr;
// Note: We do not reset the current process and current page table when idling because
// technically we haven't changed processes, our threads are just paused.
}
current_thread = nullptr;
guard.unlock();
}
void Scheduler::SwitchContext() {
Thread* const previous_thread = GetCurrentThread();
Thread* const new_thread = GetSelectedThread();
Thread* previous_thread = current_thread.get();
Thread* new_thread = selected_thread.get();
is_context_switch_pending = false;
if (new_thread == previous_thread) {
guard.unlock();
return;
}
@ -452,51 +626,44 @@ void Scheduler::SwitchContext() {
// Save context for previous thread
if (previous_thread) {
system.ArmInterface(core_id).SaveContext(previous_thread->GetContext32());
system.ArmInterface(core_id).SaveContext(previous_thread->GetContext64());
// Save the TPIDR_EL0 system register in case it was modified.
previous_thread->SetTPIDR_EL0(system.ArmInterface(core_id).GetTPIDR_EL0());
if (!previous_thread->IsHLEThread()) {
auto& cpu_core = system.ArmInterface(core_id);
cpu_core.SaveContext(previous_thread->GetContext32());
cpu_core.SaveContext(previous_thread->GetContext64());
// Save the TPIDR_EL0 system register in case it was modified.
previous_thread->SetTPIDR_EL0(cpu_core.GetTPIDR_EL0());
}
if (previous_thread->GetStatus() == ThreadStatus::Running) {
// This is only the case when a reschedule is triggered without the current thread
// yielding execution (i.e. an event triggered, system core time-sliced, etc)
previous_thread->SetStatus(ThreadStatus::Ready);
}
previous_thread->SetIsRunning(false);
previous_thread->context_guard.unlock();
}
// Load context of new thread
if (new_thread) {
ASSERT_MSG(new_thread->GetProcessorID() == s32(this->core_id),
"Thread must be assigned to this core.");
ASSERT_MSG(new_thread->GetStatus() == ThreadStatus::Ready,
"Thread must be ready to become running.");
// Cancel any outstanding wakeup events for this thread
new_thread->CancelWakeupTimer();
current_thread = SharedFrom(new_thread);
new_thread->SetStatus(ThreadStatus::Running);
new_thread->SetIsRunning(true);
auto* const thread_owner_process = current_thread->GetOwnerProcess();
if (previous_process != thread_owner_process) {
system.Kernel().MakeCurrentProcess(thread_owner_process);
}
system.ArmInterface(core_id).LoadContext(new_thread->GetContext32());
system.ArmInterface(core_id).LoadContext(new_thread->GetContext64());
system.ArmInterface(core_id).SetTlsAddress(new_thread->GetTLSAddress());
system.ArmInterface(core_id).SetTPIDR_EL0(new_thread->GetTPIDR_EL0());
std::shared_ptr<Common::Fiber> old_context;
if (previous_thread != nullptr) {
old_context = previous_thread->GetHostContext();
} else {
current_thread = nullptr;
// Note: We do not reset the current process and current page table when idling because
// technically we haven't changed processes, our threads are just paused.
old_context = idle_thread->GetHostContext();
}
std::shared_ptr<Common::Fiber> next_context;
if (new_thread != nullptr) {
next_context = new_thread->GetHostContext();
} else {
next_context = idle_thread->GetHostContext();
}
Common::Fiber::YieldTo(old_context, next_context);
/// When a thread wakes up, the scheduler may have changed to other in another core.
auto& next_scheduler = system.Kernel().CurrentScheduler();
next_scheduler.SwitchContextStep2();
}
void Scheduler::UpdateLastContextSwitchTime(Thread* thread, Process* process) {
const u64 prev_switch_ticks = last_context_switch_time;
const u64 most_recent_switch_ticks = system.CoreTiming().GetTicks();
const u64 most_recent_switch_ticks = system.CoreTiming().GetCPUTicks();
const u64 update_ticks = most_recent_switch_ticks - prev_switch_ticks;
if (thread != nullptr) {
@ -510,6 +677,16 @@ void Scheduler::UpdateLastContextSwitchTime(Thread* thread, Process* process) {
last_context_switch_time = most_recent_switch_ticks;
}
void Scheduler::Initialize() {
std::string name = "Idle Thread Id:" + std::to_string(core_id);
std::function<void(void*)> init_func = system.GetCpuManager().GetIdleThreadStartFunc();
void* init_func_parameter = system.GetCpuManager().GetStartFuncParamater();
ThreadType type = static_cast<ThreadType>(THREADTYPE_KERNEL | THREADTYPE_HLE | THREADTYPE_IDLE);
auto thread_res = Thread::Create(system, type, name, 0, 64, 0, static_cast<u32>(core_id), 0,
nullptr, std::move(init_func), init_func_parameter);
idle_thread = std::move(thread_res).Unwrap();
}
void Scheduler::Shutdown() {
current_thread = nullptr;
selected_thread = nullptr;

98
src/core/hle/kernel/scheduler.h
View File

@ -11,6 +11,7 @@
#include "common/common_types.h"
#include "common/multi_level_queue.h"
#include "common/spin_lock.h"
#include "core/hardware_properties.h"
#include "core/hle/kernel/thread.h"
@ -41,41 +42,17 @@ public:
return thread_list;
}
/**
* Add a thread to the suggested queue of a cpu core. Suggested threads may be
* picked if no thread is scheduled to run on the core.
*/
void Suggest(u32 priority, std::size_t core, Thread* thread);
/// Notify the scheduler a thread's status has changed.
void AdjustSchedulingOnStatus(Thread* thread, u32 old_flags);
/// Notify the scheduler a thread's priority has changed.
void AdjustSchedulingOnPriority(Thread* thread, u32 old_priority);
/// Notify the scheduler a thread's core and/or affinity mask has changed.
void AdjustSchedulingOnAffinity(Thread* thread, u64 old_affinity_mask, s32 old_core);
/**
* Remove a thread to the suggested queue of a cpu core. Suggested threads may be
* picked if no thread is scheduled to run on the core.
*/
void Unsuggest(u32 priority, std::size_t core, Thread* thread);
/**
* Add a thread to the scheduling queue of a cpu core. The thread is added at the
* back the queue in its priority level.
*/
void Schedule(u32 priority, std::size_t core, Thread* thread);
/**
* Add a thread to the scheduling queue of a cpu core. The thread is added at the
* front the queue in its priority level.
*/
void SchedulePrepend(u32 priority, std::size_t core, Thread* thread);
/// Reschedule an already scheduled thread based on a new priority
void Reschedule(u32 priority, std::size_t core, Thread* thread);
/// Unschedules a thread.
void Unschedule(u32 priority, std::size_t core, Thread* thread);
/// Selects a core and forces it to unload its current thread's context
void UnloadThread(std::size_t core);
/**
* Takes care of selecting the new scheduled thread in three steps:
* Takes care of selecting the new scheduled threads in three steps:
*
* 1. First a thread is selected from the top of the priority queue. If no thread
* is obtained then we move to step two, else we are done.
@ -85,8 +62,10 @@ public:
*
* 3. Third is no suggested thread is found, we do a second pass and pick a running
* thread in another core and swap it with its current thread.
*
* returns the cores needing scheduling.
*/
void SelectThread(std::size_t core);
u32 SelectThreads();
bool HaveReadyThreads(std::size_t core_id) const {
return !scheduled_queue[core_id].empty();
@ -149,6 +128,39 @@ private:
/// Unlocks the scheduler, reselects threads, interrupts cores for rescheduling
/// and reschedules current core if needed.
void Unlock();
void EnableInterruptAndSchedule(u32 cores_pending_reschedule, Core::EmuThreadHandle global_thread);
/**
* Add a thread to the suggested queue of a cpu core. Suggested threads may be
* picked if no thread is scheduled to run on the core.
*/
void Suggest(u32 priority, std::size_t core, Thread* thread);
/**
* Remove a thread to the suggested queue of a cpu core. Suggested threads may be
* picked if no thread is scheduled to run on the core.
*/
void Unsuggest(u32 priority, std::size_t core, Thread* thread);
/**
* Add a thread to the scheduling queue of a cpu core. The thread is added at the
* back the queue in its priority level.
*/
void Schedule(u32 priority, std::size_t core, Thread* thread);
/**
* Add a thread to the scheduling queue of a cpu core. The thread is added at the
* front the queue in its priority level.
*/
void SchedulePrepend(u32 priority, std::size_t core, Thread* thread);
/// Reschedule an already scheduled thread based on a new priority
void Reschedule(u32 priority, std::size_t core, Thread* thread);
/// Unschedules a thread.
void Unschedule(u32 priority, std::size_t core, Thread* thread);
/**
* Transfers a thread into an specific core. If the destination_core is -1
* it will be unscheduled from its source code and added into its suggested
@ -174,6 +186,8 @@ private:
std::atomic<s64> scope_lock{};
Core::EmuThreadHandle current_owner{Core::EmuThreadHandle::InvalidHandle()};
Common::SpinLock global_list_guard{};
/// Lists all thread ids that aren't deleted/etc.
std::vector<std::shared_ptr<Thread>> thread_list;
KernelCore& kernel;
@ -190,12 +204,6 @@ public:
/// Reschedules to the next available thread (call after current thread is suspended)
void TryDoContextSwitch();
/// Unloads currently running thread
void UnloadThread();
/// Select the threads in top of the scheduling multilist.
void SelectThreads();
/// Gets the current running thread
Thread* GetCurrentThread() const;
@ -209,15 +217,22 @@ public:
return is_context_switch_pending;
}
void Initialize();
/// Shutdowns the scheduler.
void Shutdown();
void OnThreadStart();
private:
friend class GlobalScheduler;
/// Switches the CPU's active thread context to that of the specified thread
void SwitchContext();
/// When a thread wakes up, it must run this through it's new scheduler
void SwitchContextStep2();
/**
* Called on every context switch to update the internal timestamp
* This also updates the running time ticks for the given thread and
@ -233,12 +248,15 @@ private:
std::shared_ptr<Thread> current_thread = nullptr;
std::shared_ptr<Thread> selected_thread = nullptr;
std::shared_ptr<Thread> idle_thread = nullptr;
Core::System& system;
u64 last_context_switch_time = 0;
u64 idle_selection_count = 0;
const std::size_t core_id;
Common::SpinLock guard{};
bool is_context_switch_pending = false;
};

21
src/core/hle/kernel/svc.cpp
View File

@ -863,9 +863,9 @@ static ResultCode GetInfo(Core::System& system, u64* result, u64 info_id, u64 ha
if (same_thread && info_sub_id == 0xFFFFFFFFFFFFFFFF) {
const u64 thread_ticks = current_thread->GetTotalCPUTimeTicks();
out_ticks = thread_ticks + (core_timing.GetTicks() - prev_ctx_ticks);
out_ticks = thread_ticks + (core_timing.GetCPUTicks() - prev_ctx_ticks);
} else if (same_thread && info_sub_id == system.CurrentCoreIndex()) {
out_ticks = core_timing.GetTicks() - prev_ctx_ticks;
out_ticks = core_timing.GetCPUTicks() - prev_ctx_ticks;
}
*result = out_ticks;
@ -1428,9 +1428,10 @@ static ResultCode CreateThread(Core::System& system, Handle* out_handle, VAddr e
ASSERT(kernel.CurrentProcess()->GetResourceLimit()->Reserve(ResourceType::Threads, 1));
ThreadType type = THREADTYPE_USER;
CASCADE_RESULT(std::shared_ptr<Thread> thread,
Thread::Create(kernel, "", entry_point, priority, arg, processor_id, stack_top,
*current_process));
Thread::Create(system, type, "", entry_point, priority, arg, processor_id, stack_top,
current_process));
const auto new_thread_handle = current_process->GetHandleTable().Create(thread);
if (new_thread_handle.Failed()) {
@ -1513,13 +1514,6 @@ static void SleepThread(Core::System& system, s64 nanoseconds) {
} else {
current_thread->Sleep(nanoseconds);
}
if (is_redundant) {
// If it's redundant, the core is pretty much idle. Some games keep idling
// a core while it's doing nothing, we advance timing to avoid costly continuous
// calls.
system.CoreTiming().AddTicks(2000);
}
system.PrepareReschedule(current_thread->GetProcessorID());
}
@ -1725,10 +1719,7 @@ static u64 GetSystemTick(Core::System& system) {
auto& core_timing = system.CoreTiming();
// Returns the value of cntpct_el0 (https://switchbrew.org/wiki/SVC#svcGetSystemTick)
const u64 result{Core::Timing::CpuCyclesToClockCycles(system.CoreTiming().GetTicks())};
// Advance time to defeat dumb games that busy-wait for the frame to end.
core_timing.AddTicks(400);
const u64 result{system.CoreTiming().GetClockTicks()};
return result;
}

232
src/core/hle/kernel/thread.cpp
View File

@ -9,12 +9,14 @@
#include "common/assert.h"
#include "common/common_types.h"
#include "common/fiber.h"
#include "common/logging/log.h"
#include "common/thread_queue_list.h"
#include "core/arm/arm_interface.h"
#include "core/core.h"
#include "core/core_timing.h"
#include "core/core_timing_util.h"
#include "core/cpu_manager.h"
#include "core/hardware_properties.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/handle_table.h"
@ -23,6 +25,7 @@
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/scheduler.h"
#include "core/hle/kernel/thread.h"
#include "core/hle/kernel/time_manager.h"
#include "core/hle/result.h"
#include "core/memory.h"
@ -44,6 +47,7 @@ Thread::Thread(KernelCore& kernel) : SynchronizationObject{kernel} {}
Thread::~Thread() = default;
void Thread::Stop() {
SchedulerLock lock(kernel);
// Cancel any outstanding wakeup events for this thread
Core::System::GetInstance().CoreTiming().UnscheduleEvent(kernel.ThreadWakeupCallbackEventType(),
global_handle);
@ -71,9 +75,8 @@ void Thread::WakeAfterDelay(s64 nanoseconds) {
// This function might be called from any thread so we have to be cautious and use the
// thread-safe version of ScheduleEvent.
const s64 cycles = Core::Timing::nsToCycles(std::chrono::nanoseconds{nanoseconds});
Core::System::GetInstance().CoreTiming().ScheduleEvent(
cycles, kernel.ThreadWakeupCallbackEventType(), global_handle);
nanoseconds, kernel.ThreadWakeupCallbackEventType(), global_handle);
}
void Thread::CancelWakeupTimer() {
@ -125,6 +128,16 @@ void Thread::ResumeFromWait() {
SetStatus(ThreadStatus::Ready);
}
void Thread::OnWakeUp() {
SchedulerLock lock(kernel);
if (activity == ThreadActivity::Paused) {
SetStatus(ThreadStatus::Paused);
return;
}
SetStatus(ThreadStatus::Ready);
}
void Thread::CancelWait() {
if (GetSchedulingStatus() != ThreadSchedStatus::Paused) {
is_sync_cancelled = true;
@ -153,12 +166,29 @@ static void ResetThreadContext64(Core::ARM_Interface::ThreadContext64& context,
context.fpcr = 0;
}
ResultVal<std::shared_ptr<Thread>> Thread::Create(KernelCore& kernel, std::string name,
VAddr entry_point, u32 priority, u64 arg,
s32 processor_id, VAddr stack_top,
Process& owner_process) {
std::shared_ptr<Common::Fiber> Thread::GetHostContext() const {
return host_context;
}
ResultVal<std::shared_ptr<Thread>> Thread::Create(Core::System& system, ThreadType type_flags,
std::string name, VAddr entry_point, u32 priority,
u64 arg, s32 processor_id, VAddr stack_top,
Process* owner_process) {
std::function<void(void*)> init_func = system.GetCpuManager().GetGuestThreadStartFunc();
void* init_func_parameter = system.GetCpuManager().GetStartFuncParamater();
return Create(system, type_flags, name, entry_point, priority, arg, processor_id, stack_top,
owner_process, std::move(init_func), init_func_parameter);
}
ResultVal<std::shared_ptr<Thread>> Thread::Create(Core::System& system, ThreadType type_flags,
std::string name, VAddr entry_point, u32 priority,
u64 arg, s32 processor_id, VAddr stack_top,
Process* owner_process,
std::function<void(void*)>&& thread_start_func,
void* thread_start_parameter) {
auto& kernel = system.Kernel();
// Check if priority is in ranged. Lowest priority -> highest priority id.
if (priority > THREADPRIO_LOWEST) {
if (priority > THREADPRIO_LOWEST && (type_flags & THREADTYPE_IDLE == 0)) {
LOG_ERROR(Kernel_SVC, "Invalid thread priority: {}", priority);
return ERR_INVALID_THREAD_PRIORITY;
}
@ -168,11 +198,12 @@ ResultVal<std::shared_ptr<Thread>> Thread::Create(KernelCore& kernel, std::strin
return ERR_INVALID_PROCESSOR_ID;
}
auto& system = Core::System::GetInstance();
if (!system.Memory().IsValidVirtualAddress(owner_process, entry_point)) {
LOG_ERROR(Kernel_SVC, "(name={}): invalid entry {:016X}", name, entry_point);
// TODO (bunnei): Find the correct error code to use here
return RESULT_UNKNOWN;
if (owner_process) {
if (!system.Memory().IsValidVirtualAddress(*owner_process, entry_point)) {
LOG_ERROR(Kernel_SVC, "(name={}): invalid entry {:016X}", name, entry_point);
// TODO (bunnei): Find the correct error code to use here
return RESULT_UNKNOWN;
}
}
std::shared_ptr<Thread> thread = std::make_shared<Thread>(kernel);
@ -183,7 +214,7 @@ ResultVal<std::shared_ptr<Thread>> Thread::Create(KernelCore& kernel, std::strin
thread->stack_top = stack_top;
thread->tpidr_el0 = 0;
thread->nominal_priority = thread->current_priority = priority;
thread->last_running_ticks = system.CoreTiming().GetTicks();
thread->last_running_ticks = 0;
thread->processor_id = processor_id;
thread->ideal_core = processor_id;
thread->affinity_mask = 1ULL << processor_id;
@ -193,16 +224,27 @@ ResultVal<std::shared_ptr<Thread>> Thread::Create(KernelCore& kernel, std::strin
thread->wait_handle = 0;
thread->name = std::move(name);
thread->global_handle = kernel.GlobalHandleTable().Create(thread).Unwrap();
thread->owner_process = &owner_process;
auto& scheduler = kernel.GlobalScheduler();
scheduler.AddThread(thread);
thread->tls_address = thread->owner_process->CreateTLSRegion();
thread->owner_process->RegisterThread(thread.get());
ResetThreadContext32(thread->context_32, static_cast<u32>(stack_top),
static_cast<u32>(entry_point), static_cast<u32>(arg));
ResetThreadContext64(thread->context_64, stack_top, entry_point, arg);
thread->owner_process = owner_process;
thread->type = type_flags;
if ((type_flags & THREADTYPE_IDLE) == 0) {
auto& scheduler = kernel.GlobalScheduler();
scheduler.AddThread(thread);
}
if (owner_process) {
thread->tls_address = thread->owner_process->CreateTLSRegion();
thread->owner_process->RegisterThread(thread.get());
} else {
thread->tls_address = 0;
}
// TODO(peachum): move to ScheduleThread() when scheduler is added so selected core is used
// to initialize the context
if ((type_flags & THREADTYPE_HLE) == 0) {
ResetThreadContext32(thread->context_32, static_cast<u32>(stack_top),
static_cast<u32>(entry_point), static_cast<u32>(arg));
ResetThreadContext64(thread->context_64, stack_top, entry_point, arg);
}
thread->host_context =
std::make_shared<Common::Fiber>(std::move(thread_start_func), thread_start_parameter);
return MakeResult<std::shared_ptr<Thread>>(std::move(thread));
}
@ -258,7 +300,7 @@ void Thread::SetStatus(ThreadStatus new_status) {
}
if (status == ThreadStatus::Running) {
last_running_ticks = Core::System::GetInstance().CoreTiming().GetTicks();
last_running_ticks = Core::System::GetInstance().CoreTiming().GetCPUTicks();
}
status = new_status;
@ -375,38 +417,55 @@ void Thread::SetActivity(ThreadActivity value) {
}
void Thread::Sleep(s64 nanoseconds) {
// Sleep current thread and check for next thread to schedule
SetStatus(ThreadStatus::WaitSleep);
Handle event_handle{};
{
SchedulerLockAndSleep lock(kernel, event_handle, this, nanoseconds);
SetStatus(ThreadStatus::WaitSleep);
}
// Create an event to wake the thread up after the specified nanosecond delay has passed
WakeAfterDelay(nanoseconds);
if (event_handle != InvalidHandle) {
auto& time_manager = kernel.TimeManager();
time_manager.UnscheduleTimeEvent(event_handle);
}
}
bool Thread::YieldSimple() {
auto& scheduler = kernel.GlobalScheduler();
return scheduler.YieldThread(this);
bool result{};
{
SchedulerLock lock(kernel);
result = kernel.GlobalScheduler().YieldThread(this);
}
return result;
}
bool Thread::YieldAndBalanceLoad() {
auto& scheduler = kernel.GlobalScheduler();
return scheduler.YieldThreadAndBalanceLoad(this);
bool result{};
{
SchedulerLock lock(kernel);
result = kernel.GlobalScheduler().YieldThreadAndBalanceLoad(this);
}
return result;
}
bool Thread::YieldAndWaitForLoadBalancing() {
auto& scheduler = kernel.GlobalScheduler();
return scheduler.YieldThreadAndWaitForLoadBalancing(this);
bool result{};
{
SchedulerLock lock(kernel);
result = kernel.GlobalScheduler().YieldThreadAndWaitForLoadBalancing(this);
}
return result;
}
void Thread::SetSchedulingStatus(ThreadSchedStatus new_status) {
const u32 old_flags = scheduling_state;
scheduling_state = (scheduling_state & static_cast<u32>(ThreadSchedMasks::HighMask)) |
static_cast<u32>(new_status);
AdjustSchedulingOnStatus(old_flags);
kernel.GlobalScheduler().AdjustSchedulingOnStatus(this, old_flags);
}
void Thread::SetCurrentPriority(u32 new_priority) {
const u32 old_priority = std::exchange(current_priority, new_priority);
AdjustSchedulingOnPriority(old_priority);
kernel.GlobalScheduler().AdjustSchedulingOnPriority(this, old_priority);
}
ResultCode Thread::SetCoreAndAffinityMask(s32 new_core, u64 new_affinity_mask) {
@ -443,111 +502,12 @@ ResultCode Thread::SetCoreAndAffinityMask(s32 new_core, u64 new_affinity_mask) {
processor_id = ideal_core;
}
}
AdjustSchedulingOnAffinity(old_affinity_mask, old_core);
kernel.GlobalScheduler().AdjustSchedulingOnAffinity(this, old_affinity_mask, old_core);
}
}
return RESULT_SUCCESS;
}
void Thread::AdjustSchedulingOnStatus(u32 old_flags) {
if (old_flags == scheduling_state) {
return;
}
auto& scheduler = kernel.GlobalScheduler();
if (static_cast<ThreadSchedStatus>(old_flags & static_cast<u32>(ThreadSchedMasks::LowMask)) ==
ThreadSchedStatus::Runnable) {
// In this case the thread was running, now it's pausing/exitting
if (processor_id >= 0) {
scheduler.Unschedule(current_priority, static_cast<u32>(processor_id), this);
}
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
if (core != static_cast<u32>(processor_id) && ((affinity_mask >> core) & 1) != 0) {
scheduler.Unsuggest(current_priority, core, this);
}
}
} else if (GetSchedulingStatus() == ThreadSchedStatus::Runnable) {
// The thread is now set to running from being stopped
if (processor_id >= 0) {
scheduler.Schedule(current_priority, static_cast<u32>(processor_id), this);
}
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
if (core != static_cast<u32>(processor_id) && ((affinity_mask >> core) & 1) != 0) {
scheduler.Suggest(current_priority, core, this);
}
}
}
scheduler.SetReselectionPending();
}
void Thread::AdjustSchedulingOnPriority(u32 old_priority) {
if (GetSchedulingStatus() != ThreadSchedStatus::Runnable) {
return;
}
auto& scheduler = kernel.GlobalScheduler();
if (processor_id >= 0) {
scheduler.Unschedule(old_priority, static_cast<u32>(processor_id), this);
}
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
if (core != static_cast<u32>(processor_id) && ((affinity_mask >> core) & 1) != 0) {
scheduler.Unsuggest(old_priority, core, this);
}
}
// Add thread to the new priority queues.
Thread* current_thread = GetCurrentThread();
if (processor_id >= 0) {
if (current_thread == this) {
scheduler.SchedulePrepend(current_priority, static_cast<u32>(processor_id), this);
} else {
scheduler.Schedule(current_priority, static_cast<u32>(processor_id), this);
}
}
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
if (core != static_cast<u32>(processor_id) && ((affinity_mask >> core) & 1) != 0) {
scheduler.Suggest(current_priority, core, this);
}
}
scheduler.SetReselectionPending();
}
void Thread::AdjustSchedulingOnAffinity(u64 old_affinity_mask, s32 old_core) {
auto& scheduler = kernel.GlobalScheduler();
if (GetSchedulingStatus() != ThreadSchedStatus::Runnable ||
current_priority >= THREADPRIO_COUNT) {
return;
}
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
if (((old_affinity_mask >> core) & 1) != 0) {
if (core == static_cast<u32>(old_core)) {
scheduler.Unschedule(current_priority, core, this);
} else {
scheduler.Unsuggest(current_priority, core, this);
}
}
}
for (u32 core = 0; core < Core::Hardware::NUM_CPU_CORES; core++) {
if (((affinity_mask >> core) & 1) != 0) {
if (core == static_cast<u32>(processor_id)) {
scheduler.Schedule(current_priority, core, this);
} else {
scheduler.Suggest(current_priority, core, this);
}
}
}
scheduler.SetReselectionPending();
}
////////////////////////////////////////////////////////////////////////////////////////////////////
/**

81
src/core/hle/kernel/thread.h
View File

@ -9,23 +9,42 @@
#include <vector>
#include "common/common_types.h"
#include "common/spin_lock.h"
#include "core/arm/arm_interface.h"
#include "core/hle/kernel/object.h"
#include "core/hle/kernel/synchronization_object.h"
#include "core/hle/result.h"
namespace Common {
class Fiber;
}
namespace Core {
class System;
}
namespace Kernel {
class GlobalScheduler;
class KernelCore;
class Process;
class Scheduler;
enum ThreadPriority : u32 {
THREADPRIO_HIGHEST = 0, ///< Highest thread priority
THREADPRIO_USERLAND_MAX = 24, ///< Highest thread priority for userland apps
THREADPRIO_DEFAULT = 44, ///< Default thread priority for userland apps
THREADPRIO_LOWEST = 63, ///< Lowest thread priority
THREADPRIO_COUNT = 64, ///< Total number of possible thread priorities.
THREADPRIO_HIGHEST = 0, ///< Highest thread priority
THREADPRIO_MAX_CORE_MIGRATION = 2, ///< Highest priority for a core migration
THREADPRIO_USERLAND_MAX = 24, ///< Highest thread priority for userland apps
THREADPRIO_DEFAULT = 44, ///< Default thread priority for userland apps
THREADPRIO_LOWEST = 63, ///< Lowest thread priority
THREADPRIO_COUNT = 64, ///< Total number of possible thread priorities.
};
enum ThreadType : u32 {
THREADTYPE_USER = 0x1,
THREADTYPE_KERNEL = 0x2,
THREADTYPE_HLE = 0x4,
THREADTYPE_IDLE = 0x8,
THREADTYPE_SUSPEND = 0x10,
};
enum ThreadProcessorId : s32 {
@ -111,22 +130,43 @@ public:
std::function<bool(ThreadWakeupReason reason, std::shared_ptr<Thread> thread,
std::shared_ptr<SynchronizationObject> object, std::size_t index)>;
/**
* Creates and returns a new thread. The new thread is immediately scheduled
* @param system The instance of the whole system
* @param name The friendly name desired for the thread
* @param entry_point The address at which the thread should start execution
* @param priority The thread's priority
* @param arg User data to pass to the thread
* @param processor_id The ID(s) of the processors on which the thread is desired to be run
* @param stack_top The address of the thread's stack top
* @param owner_process The parent process for the thread, if null, it's a kernel thread
* @return A shared pointer to the newly created thread
*/
static ResultVal<std::shared_ptr<Thread>> Create(Core::System& system, ThreadType type_flags, std::string name,
VAddr entry_point, u32 priority, u64 arg,
s32 processor_id, VAddr stack_top,
Process* owner_process);
/**
* Creates and returns a new thread. The new thread is immediately scheduled
* @param kernel The kernel instance this thread will be created under.
* @param system The instance of the whole system
* @param name The friendly name desired for the thread
* @param entry_point The address at which the thread should start execution
* @param priority The thread's priority
* @param arg User data to pass to the thread
* @param processor_id The ID(s) of the processors on which the thread is desired to be run
* @param stack_top The address of the thread's stack top
* @param owner_process The parent process for the thread
* @param owner_process The parent process for the thread, if null, it's a kernel thread
* @param thread_start_func The function where the host context will start.
* @param thread_start_parameter The parameter which will passed to host context on init
* @return A shared pointer to the newly created thread
*/
static ResultVal<std::shared_ptr<Thread>> Create(KernelCore& kernel, std::string name,
static ResultVal<std::shared_ptr<Thread>> Create(Core::System& system, ThreadType type_flags, std::string name,
VAddr entry_point, u32 priority, u64 arg,
s32 processor_id, VAddr stack_top,
Process& owner_process);
Process* owner_process,
std::function<void(void*)>&& thread_start_func,
void* thread_start_parameter);
std::string GetName() const override {
return name;
@ -192,7 +232,9 @@ public:
}
/// Resumes a thread from waiting
void ResumeFromWait();
void /* deprecated */ ResumeFromWait();
void OnWakeUp();
/// Cancels a waiting operation that this thread may or may not be within.
///
@ -206,10 +248,10 @@ public:
* Schedules an event to wake up the specified thread after the specified delay
* @param nanoseconds The time this thread will be allowed to sleep for
*/
void WakeAfterDelay(s64 nanoseconds);
void /* deprecated */ WakeAfterDelay(s64 nanoseconds);
/// Cancel any outstanding wakeup events for this thread
void CancelWakeupTimer();
void /* deprecated */ CancelWakeupTimer();
/**
* Sets the result after the thread awakens (from svcWaitSynchronization)
@ -290,6 +332,12 @@ public:
return context_64;
}
bool IsHLEThread() const {
return (type & THREADTYPE_HLE) != 0;
}
std::shared_ptr<Common::Fiber> GetHostContext() const;
ThreadStatus GetStatus() const {
return status;
}
@ -467,16 +515,19 @@ public:
}
private:
friend class GlobalScheduler;
friend class Scheduler;
void SetSchedulingStatus(ThreadSchedStatus new_status);
void SetCurrentPriority(u32 new_priority);
ResultCode SetCoreAndAffinityMask(s32 new_core, u64 new_affinity_mask);
void AdjustSchedulingOnStatus(u32 old_flags);
void AdjustSchedulingOnPriority(u32 old_priority);
void AdjustSchedulingOnAffinity(u64 old_affinity_mask, s32 old_core);
ThreadContext32 context_32{};
ThreadContext64 context_64{};
Common::SpinLock context_guard{};
std::shared_ptr<Common::Fiber> host_context{};
u64 thread_id = 0;
@ -485,6 +536,8 @@ private:
VAddr entry_point = 0;
VAddr stack_top = 0;
ThreadType type;
/// Nominal thread priority, as set by the emulated application.
/// The nominal priority is the thread priority without priority
/// inheritance taken into account.

2
src/core/hle/kernel/time_manager.cpp
View File

@ -19,7 +19,7 @@ TimeManager::TimeManager(Core::System& system) : system{system} {
Handle proper_handle = static_cast<Handle>(thread_handle);
std::shared_ptr<Thread> thread =
this->system.Kernel().RetrieveThreadFromGlobalHandleTable(proper_handle);
thread->ResumeFromWait();
thread->OnWakeUp();
});
}

2
src/core/hle/service/hid/controllers/debug_pad.cpp
View File

@ -23,7 +23,7 @@ void Controller_DebugPad::OnRelease() {}
void Controller_DebugPad::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8* data,
std::size_t size) {
shared_memory.header.timestamp = core_timing.GetTicks();
shared_memory.header.timestamp = core_timing.GetCPUTicks();
shared_memory.header.total_entry_count = 17;
if (!IsControllerActivated()) {

2
src/core/hle/service/hid/controllers/gesture.cpp
View File

@ -19,7 +19,7 @@ void Controller_Gesture::OnRelease() {}
void Controller_Gesture::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8* data,
std::size_t size) {
shared_memory.header.timestamp = core_timing.GetTicks();
shared_memory.header.timestamp = core_timing.GetCPUTicks();
shared_memory.header.total_entry_count = 17;
if (!IsControllerActivated()) {

2
src/core/hle/service/hid/controllers/keyboard.cpp
View File

@ -21,7 +21,7 @@ void Controller_Keyboard::OnRelease() {}
void Controller_Keyboard::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8* data,
std::size_t size) {
shared_memory.header.timestamp = core_timing.GetTicks();
shared_memory.header.timestamp = core_timing.GetCPUTicks();
shared_memory.header.total_entry_count = 17;
if (!IsControllerActivated()) {

2
src/core/hle/service/hid/controllers/mouse.cpp
View File

@ -19,7 +19,7 @@ void Controller_Mouse::OnRelease() {}
void Controller_Mouse::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8* data,
std::size_t size) {
shared_memory.header.timestamp = core_timing.GetTicks();
shared_memory.header.timestamp = core_timing.GetCPUTicks();
shared_memory.header.total_entry_count = 17;
if (!IsControllerActivated()) {

2
src/core/hle/service/hid/controllers/npad.cpp
View File

@ -328,7 +328,7 @@ void Controller_NPad::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8*
const auto& last_entry =
main_controller->npad[main_controller->common.last_entry_index];
main_controller->common.timestamp = core_timing.GetTicks();
main_controller->common.timestamp = core_timing.GetCPUTicks();
main_controller->common.last_entry_index =
(main_controller->common.last_entry_index + 1) % 17;

2
src/core/hle/service/hid/controllers/stubbed.cpp
View File

@ -23,7 +23,7 @@ void Controller_Stubbed::OnUpdate(const Core::Timing::CoreTiming& core_timing, u
}
CommonHeader header{};
header.timestamp = core_timing.GetTicks();
header.timestamp = core_timing.GetCPUTicks();
header.total_entry_count = 17;
header.entry_count = 0;
header.last_entry_index = 0;

4
src/core/hle/service/hid/controllers/touchscreen.cpp
View File

@ -22,7 +22,7 @@ void Controller_Touchscreen::OnRelease() {}
void Controller_Touchscreen::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8* data,
std::size_t size) {
shared_memory.header.timestamp = core_timing.GetTicks();
shared_memory.header.timestamp = core_timing.GetCPUTicks();
shared_memory.header.total_entry_count = 17;
if (!IsControllerActivated()) {
@ -49,7 +49,7 @@ void Controller_Touchscreen::OnUpdate(const Core::Timing::CoreTiming& core_timin
touch_entry.diameter_x = Settings::values.touchscreen.diameter_x;
touch_entry.diameter_y = Settings::values.touchscreen.diameter_y;
touch_entry.rotation_angle = Settings::values.touchscreen.rotation_angle;
const u64 tick = core_timing.GetTicks();
const u64 tick = core_timing.GetCPUTicks();
touch_entry.delta_time = tick - last_touch;
last_touch = tick;
touch_entry.finger = Settings::values.touchscreen.finger;

2
src/core/hle/service/hid/controllers/xpad.cpp
View File

@ -20,7 +20,7 @@ void Controller_XPad::OnRelease() {}
void Controller_XPad::OnUpdate(const Core::Timing::CoreTiming& core_timing, u8* data,
std::size_t size) {
for (auto& xpad_entry : shared_memory.shared_memory_entries) {
xpad_entry.header.timestamp = core_timing.GetTicks();
xpad_entry.header.timestamp = core_timing.GetCPUTicks();
xpad_entry.header.total_entry_count = 17;
if (!IsControllerActivated()) {

16
src/core/hle/service/hid/hid.cpp
View File

@ -39,11 +39,9 @@ namespace Service::HID {
// Updating period for each HID device.
// TODO(ogniK): Find actual polling rate of hid
constexpr s64 pad_update_ticks = static_cast<s64>(Core::Hardware::BASE_CLOCK_RATE / 66);
[[maybe_unused]] constexpr s64 accelerometer_update_ticks =
static_cast<s64>(Core::Hardware::BASE_CLOCK_RATE / 100);
[[maybe_unused]] constexpr s64 gyroscope_update_ticks =
static_cast<s64>(Core::Hardware::BASE_CLOCK_RATE / 100);
constexpr s64 pad_update_ticks = static_cast<s64>(1000000000 / 66);
[[maybe_unused]] constexpr s64 accelerometer_update_ticks = static_cast<s64>(1000000000 / 100);
[[maybe_unused]] constexpr s64 gyroscope_update_ticks = static_cast<s64>(1000000000 / 100);
constexpr std::size_t SHARED_MEMORY_SIZE = 0x40000;
IAppletResource::IAppletResource(Core::System& system)
@ -78,8 +76,8 @@ IAppletResource::IAppletResource(Core::System& system)
// Register update callbacks
pad_update_event =
Core::Timing::CreateEvent("HID::UpdatePadCallback", [this](u64 userdata, s64 cycles_late) {
UpdateControllers(userdata, cycles_late);
Core::Timing::CreateEvent("HID::UpdatePadCallback", [this](u64 userdata, s64 ns_late) {
UpdateControllers(userdata, ns_late);
});
// TODO(shinyquagsire23): Other update callbacks? (accel, gyro?)
@ -109,7 +107,7 @@ void IAppletResource::GetSharedMemoryHandle(Kernel::HLERequestContext& ctx) {
rb.PushCopyObjects(shared_mem);
}
void IAppletResource::UpdateControllers(u64 userdata, s64 cycles_late) {
void IAppletResource::UpdateControllers(u64 userdata, s64 ns_late) {
auto& core_timing = system.CoreTiming();
const bool should_reload = Settings::values.is_device_reload_pending.exchange(false);
@ -120,7 +118,7 @@ void IAppletResource::UpdateControllers(u64 userdata, s64 cycles_late) {
controller->OnUpdate(core_timing, shared_mem->GetPointer(), SHARED_MEMORY_SIZE);
}
core_timing.ScheduleEvent(pad_update_ticks - cycles_late, pad_update_event);
core_timing.ScheduleEvent(pad_update_ticks - ns_late, pad_update_event);
}
class IActiveVibrationDeviceList final : public ServiceFramework<IActiveVibrationDeviceList> {

2
src/core/hle/service/hid/irs.cpp
View File

@ -98,7 +98,7 @@ void IRS::GetImageTransferProcessorState(Kernel::HLERequestContext& ctx) {
IPC::ResponseBuilder rb{ctx, 5};
rb.Push(RESULT_SUCCESS);
rb.PushRaw<u64>(system.CoreTiming().GetTicks());
rb.PushRaw<u64>(system.CoreTiming().GetCPUTicks());
rb.PushRaw<u32>(0);
}

3
src/core/hle/service/nvdrv/devices/nvhost_ctrl_gpu.cpp
View File

@ -200,8 +200,7 @@ u32 nvhost_ctrl_gpu::GetGpuTime(const std::vector<u8>& input, std::vector<u8>& o
IoctlGetGpuTime params{};
std::memcpy(&params, input.data(), input.size());
const auto ns = Core::Timing::CyclesToNs(system.CoreTiming().GetTicks());
params.gpu_time = static_cast<u64_le>(ns.count());
params.gpu_time = static_cast<u64_le>(system.CoreTiming().GetGlobalTimeNs().count());
std::memcpy(output.data(), &params, output.size());
return 0;
}

13
src/core/hle/service/nvflinger/nvflinger.cpp
View File

@ -27,8 +27,8 @@
namespace Service::NVFlinger {
constexpr s64 frame_ticks = static_cast<s64>(Core::Hardware::BASE_CLOCK_RATE / 60);
constexpr s64 frame_ticks_30fps = static_cast<s64>(Core::Hardware::BASE_CLOCK_RATE / 30);
constexpr s64 frame_ticks = static_cast<s64>(1000000000 / 60);
constexpr s64 frame_ticks_30fps = static_cast<s64>(1000000000 / 30);
NVFlinger::NVFlinger(Core::System& system) : system(system) {
displays.emplace_back(0, "Default", system);
@ -39,11 +39,10 @@ NVFlinger::NVFlinger(Core::System& system) : system(system) {
// Schedule the screen composition events
composition_event =
Core::Timing::CreateEvent("ScreenComposition", [this](u64 userdata, s64 cycles_late) {
Core::Timing::CreateEvent("ScreenComposition", [this](u64 userdata, s64 ns_late) {
Compose();
const auto ticks =
Settings::values.force_30fps_mode ? frame_ticks_30fps : GetNextTicks();
this->system.CoreTiming().ScheduleEvent(std::max<s64>(0LL, ticks - cycles_late),
const auto ticks = GetNextTicks();
this->system.CoreTiming().ScheduleEvent(std::max<s64>(0LL, ticks - ns_late),
composition_event);
});
@ -223,7 +222,7 @@ void NVFlinger::Compose() {
s64 NVFlinger::GetNextTicks() const {
constexpr s64 max_hertz = 120LL;
return (Core::Hardware::BASE_CLOCK_RATE * (1LL << swap_interval)) / max_hertz;
return (1000000000 * (1LL << swap_interval)) / max_hertz;
}
} // namespace Service::NVFlinger

5
src/core/hle/service/time/standard_steady_clock_core.cpp
View File

@ -11,9 +11,8 @@
namespace Service::Time::Clock {
TimeSpanType StandardSteadyClockCore::GetCurrentRawTimePoint(Core::System& system) {
const TimeSpanType ticks_time_span{TimeSpanType::FromTicks(
Core::Timing::CpuCyclesToClockCycles(system.CoreTiming().GetTicks()),
Core::Hardware::CNTFREQ)};
const TimeSpanType ticks_time_span{
TimeSpanType::FromTicks(system.CoreTiming().GetClockTicks(), Core::Hardware::CNTFREQ)};
TimeSpanType raw_time_point{setup_value.nanoseconds + ticks_time_span.nanoseconds};
if (raw_time_point.nanoseconds < cached_raw_time_point.nanoseconds) {

5
src/core/hle/service/time/tick_based_steady_clock_core.cpp
View File

@ -11,9 +11,8 @@
namespace Service::Time::Clock {
SteadyClockTimePoint TickBasedSteadyClockCore::GetTimePoint(Core::System& system) {
const TimeSpanType ticks_time_span{TimeSpanType::FromTicks(
Core::Timing::CpuCyclesToClockCycles(system.CoreTiming().GetTicks()),
Core::Hardware::CNTFREQ)};
const TimeSpanType ticks_time_span{
TimeSpanType::FromTicks(system.CoreTiming().GetClockTicks(), Core::Hardware::CNTFREQ)};
return {ticks_time_span.ToSeconds(), GetClockSourceId()};
}

5
src/core/hle/service/time/time.cpp
View File

@ -234,9 +234,8 @@ void Module::Interface::CalculateMonotonicSystemClockBaseTimePoint(Kernel::HLERe
const auto current_time_point{steady_clock_core.GetCurrentTimePoint(system)};
if (current_time_point.clock_source_id == context.steady_time_point.clock_source_id) {
const auto ticks{Clock::TimeSpanType::FromTicks(
Core::Timing::CpuCyclesToClockCycles(system.CoreTiming().GetTicks()),
Core::Hardware::CNTFREQ)};
const auto ticks{Clock::TimeSpanType::FromTicks(system.CoreTiming().GetClockTicks(),
Core::Hardware::CNTFREQ)};
const s64 base_time_point{context.offset + current_time_point.time_point -
ticks.ToSeconds()};
IPC::ResponseBuilder rb{ctx, (sizeof(s64) / 4) + 2};

3
src/core/hle/service/time/time_sharedmemory.cpp
View File

@ -30,8 +30,7 @@ void SharedMemory::SetupStandardSteadyClock(Core::System& system,
const Common::UUID& clock_source_id,
Clock::TimeSpanType current_time_point) {
const Clock::TimeSpanType ticks_time_span{Clock::TimeSpanType::FromTicks(
Core::Timing::CpuCyclesToClockCycles(system.CoreTiming().GetTicks()),
Core::Hardware::CNTFREQ)};
system.CoreTiming().GetClockTicks(), Core::Hardware::CNTFREQ)};
const Clock::SteadyClockContext context{
static_cast<u64>(current_time_point.nanoseconds - ticks_time_span.nanoseconds),
clock_source_id};

11
src/core/memory.cpp
View File

@ -29,15 +29,12 @@ namespace Core::Memory {
struct Memory::Impl {
explicit Impl(Core::System& system_) : system{system_} {}
void SetCurrentPageTable(Kernel::Process& process) {
void SetCurrentPageTable(Kernel::Process& process, u32 core_id) {
current_page_table = &process.PageTable().PageTableImpl();
const std::size_t address_space_width = process.PageTable().GetAddressSpaceWidth();
system.ArmInterface(0).PageTableChanged(*current_page_table, address_space_width);
system.ArmInterface(1).PageTableChanged(*current_page_table, address_space_width);
system.ArmInterface(2).PageTableChanged(*current_page_table, address_space_width);
system.ArmInterface(3).PageTableChanged(*current_page_table, address_space_width);
system.ArmInterface(core_id).PageTableChanged(*current_page_table, address_space_width);
}
void MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, PAddr target) {
@ -689,8 +686,8 @@ struct Memory::Impl {
Memory::Memory(Core::System& system) : impl{std::make_unique<Impl>(system)} {}
Memory::~Memory() = default;
void Memory::SetCurrentPageTable(Kernel::Process& process) {
impl->SetCurrentPageTable(process);
void Memory::SetCurrentPageTable(Kernel::Process& process, u32 core_id) {
impl->SetCurrentPageTable(process, core_id);
}
void Memory::MapMemoryRegion(Common::PageTable& page_table, VAddr base, u64 size, PAddr target) {

2
src/core/memory.h
View File

@ -64,7 +64,7 @@ public:
*
* @param process The process to use the page table of.
*/
void SetCurrentPageTable(Kernel::Process& process);
void SetCurrentPageTable(Kernel::Process& process, u32 core_id);
/**
* Maps an allocated buffer onto a region of the emulated process address space.

8
src/core/memory/cheat_engine.cpp
View File

@ -20,7 +20,7 @@
namespace Core::Memory {
constexpr s64 CHEAT_ENGINE_TICKS = static_cast<s64>(Core::Hardware::BASE_CLOCK_RATE / 12);
constexpr s64 CHEAT_ENGINE_TICKS = static_cast<s64>(1000000000 / 12);
constexpr u32 KEYPAD_BITMASK = 0x3FFFFFF;
StandardVmCallbacks::StandardVmCallbacks(Core::System& system, const CheatProcessMetadata& metadata)
@ -190,7 +190,7 @@ CheatEngine::~CheatEngine() {
void CheatEngine::Initialize() {
event = Core::Timing::CreateEvent(
"CheatEngine::FrameCallback::" + Common::HexToString(metadata.main_nso_build_id),
[this](u64 userdata, s64 cycles_late) { FrameCallback(userdata, cycles_late); });
[this](u64 userdata, s64 ns_late) { FrameCallback(userdata, ns_late); });
core_timing.ScheduleEvent(CHEAT_ENGINE_TICKS, event);
metadata.process_id = system.CurrentProcess()->GetProcessID();
@ -217,7 +217,7 @@ void CheatEngine::Reload(std::vector<CheatEntry> cheats) {
MICROPROFILE_DEFINE(Cheat_Engine, "Add-Ons", "Cheat Engine", MP_RGB(70, 200, 70));
void CheatEngine::FrameCallback(u64 userdata, s64 cycles_late) {
void CheatEngine::FrameCallback(u64 userdata, s64 ns_late) {
if (is_pending_reload.exchange(false)) {
vm.LoadProgram(cheats);
}
@ -230,7 +230,7 @@ void CheatEngine::FrameCallback(u64 userdata, s64 cycles_late) {
vm.Execute(metadata);
core_timing.ScheduleEvent(CHEAT_ENGINE_TICKS - cycles_late, event);
core_timing.ScheduleEvent(CHEAT_ENGINE_TICKS - ns_late, event);
}
} // namespace Core::Memory

8
src/core/tools/freezer.cpp
View File

@ -14,7 +14,7 @@
namespace Tools {
namespace {
constexpr s64 MEMORY_FREEZER_TICKS = static_cast<s64>(Core::Hardware::BASE_CLOCK_RATE / 60);
constexpr s64 MEMORY_FREEZER_TICKS = static_cast<s64>(1000000000 / 60);
u64 MemoryReadWidth(Core::Memory::Memory& memory, u32 width, VAddr addr) {
switch (width) {
@ -57,7 +57,7 @@ Freezer::Freezer(Core::Timing::CoreTiming& core_timing_, Core::Memory::Memory& m
: core_timing{core_timing_}, memory{memory_} {
event = Core::Timing::CreateEvent(
"MemoryFreezer::FrameCallback",
[this](u64 userdata, s64 cycles_late) { FrameCallback(userdata, cycles_late); });
[this](u64 userdata, s64 ns_late) { FrameCallback(userdata, ns_late); });
core_timing.ScheduleEvent(MEMORY_FREEZER_TICKS, event);
}
@ -158,7 +158,7 @@ std::vector<Freezer::Entry> Freezer::GetEntries() const {
return entries;
}
void Freezer::FrameCallback(u64 userdata, s64 cycles_late) {
void Freezer::FrameCallback(u64 userdata, s64 ns_late) {
if (!IsActive()) {
LOG_DEBUG(Common_Memory, "Memory freezer has been deactivated, ending callback events.");
return;
@ -173,7 +173,7 @@ void Freezer::FrameCallback(u64 userdata, s64 cycles_late) {
MemoryWriteWidth(memory, entry.width, entry.address, entry.value);
}
core_timing.ScheduleEvent(MEMORY_FREEZER_TICKS - cycles_late, event);
core_timing.ScheduleEvent(MEMORY_FREEZER_TICKS - ns_late, event);
}
void Freezer::FillEntryReads() {

1
src/tests/CMakeLists.txt
View File

@ -8,7 +8,6 @@ add_executable(tests
core/arm/arm_test_common.cpp
core/arm/arm_test_common.h
core/core_timing.cpp
core/host_timing.cpp
tests.cpp
)

186
src/tests/core/core_timing.cpp
View File

@ -16,31 +16,30 @@
namespace {
// Numbers are chosen randomly to make sure the correct one is given.
constexpr std::array<u64, 5> CB_IDS{{42, 144, 93, 1026, UINT64_C(0xFFFF7FFFF7FFFF)}};
constexpr int MAX_SLICE_LENGTH = 10000; // Copied from CoreTiming internals
static constexpr std::array<u64, 5> CB_IDS{{42, 144, 93, 1026, UINT64_C(0xFFFF7FFFF7FFFF)}};
static constexpr int MAX_SLICE_LENGTH = 10000; // Copied from CoreTiming internals
static constexpr std::array<u64, 5> calls_order{{2, 0, 1, 4, 3}};
static std::array<s64, 5> delays{};
std::bitset<CB_IDS.size()> callbacks_ran_flags;
u64 expected_callback = 0;
s64 lateness = 0;
template <unsigned int IDX>
void CallbackTemplate(u64 userdata, s64 cycles_late) {
void HostCallbackTemplate(u64 userdata, s64 nanoseconds_late) {
static_assert(IDX < CB_IDS.size(), "IDX out of range");
callbacks_ran_flags.set(IDX);
REQUIRE(CB_IDS[IDX] == userdata);
REQUIRE(CB_IDS[IDX] == expected_callback);
REQUIRE(lateness == cycles_late);
REQUIRE(CB_IDS[IDX] == CB_IDS[calls_order[expected_callback]]);
delays[IDX] = nanoseconds_late;
++expected_callback;
}
u64 callbacks_done = 0;
void EmptyCallback(u64 userdata, s64 cycles_late) {
++callbacks_done;
}
struct ScopeInit final {
ScopeInit() {
core_timing.Initialize();
core_timing.Initialize([]() {});
}
~ScopeInit() {
core_timing.Shutdown();
@ -49,110 +48,97 @@ struct ScopeInit final {
Core::Timing::CoreTiming core_timing;
};
void AdvanceAndCheck(Core::Timing::CoreTiming& core_timing, u32 idx, u32 context = 0,
int expected_lateness = 0, int cpu_downcount = 0) {
callbacks_ran_flags = 0;
expected_callback = CB_IDS[idx];
lateness = expected_lateness;
// Pretend we executed X cycles of instructions.
core_timing.SwitchContext(context);
core_timing.AddTicks(core_timing.GetDowncount() - cpu_downcount);
core_timing.Advance();
core_timing.SwitchContext((context + 1) % 4);
REQUIRE(decltype(callbacks_ran_flags)().set(idx) == callbacks_ran_flags);
}
} // Anonymous namespace
TEST_CASE("CoreTiming[BasicOrder]", "[core]") {
ScopeInit guard;
auto& core_timing = guard.core_timing;
std::vector<std::shared_ptr<Core::Timing::EventType>> events{
Core::Timing::CreateEvent("callbackA", HostCallbackTemplate<0>),
Core::Timing::CreateEvent("callbackB", HostCallbackTemplate<1>),
Core::Timing::CreateEvent("callbackC", HostCallbackTemplate<2>),
Core::Timing::CreateEvent("callbackD", HostCallbackTemplate<3>),
Core::Timing::CreateEvent("callbackE", HostCallbackTemplate<4>),
};
std::shared_ptr<Core::Timing::EventType> cb_a =
Core::Timing::CreateEvent("callbackA", CallbackTemplate<0>);
std::shared_ptr<Core::Timing::EventType> cb_b =
Core::Timing::CreateEvent("callbackB", CallbackTemplate<1>);
std::shared_ptr<Core::Timing::EventType> cb_c =
Core::Timing::CreateEvent("callbackC", CallbackTemplate<2>);
std::shared_ptr<Core::Timing::EventType> cb_d =
Core::Timing::CreateEvent("callbackD", CallbackTemplate<3>);
std::shared_ptr<Core::Timing::EventType> cb_e =
Core::Timing::CreateEvent("callbackE", CallbackTemplate<4>);
expected_callback = 0;
// Enter slice 0
core_timing.ResetRun();
core_timing.SyncPause(true);
// D -> B -> C -> A -> E
core_timing.SwitchContext(0);
core_timing.ScheduleEvent(1000, cb_a, CB_IDS[0]);
REQUIRE(1000 == core_timing.GetDowncount());
core_timing.ScheduleEvent(500, cb_b, CB_IDS[1]);
REQUIRE(500 == core_timing.GetDowncount());
core_timing.ScheduleEvent(800, cb_c, CB_IDS[2]);
REQUIRE(500 == core_timing.GetDowncount());
core_timing.ScheduleEvent(100, cb_d, CB_IDS[3]);
REQUIRE(100 == core_timing.GetDowncount());
core_timing.ScheduleEvent(1200, cb_e, CB_IDS[4]);
REQUIRE(100 == core_timing.GetDowncount());
u64 one_micro = 1000U;
for (std::size_t i = 0; i < events.size(); i++) {
u64 order = calls_order[i];
core_timing.ScheduleEvent(i * one_micro + 100U, events[order], CB_IDS[order]);
}
/// test pause
REQUIRE(callbacks_ran_flags.none());
AdvanceAndCheck(core_timing, 3, 0);
AdvanceAndCheck(core_timing, 1, 1);
AdvanceAndCheck(core_timing, 2, 2);
AdvanceAndCheck(core_timing, 0, 3);
AdvanceAndCheck(core_timing, 4, 0);
core_timing.Pause(false); // No need to sync
while (core_timing.HasPendingEvents())
;
REQUIRE(callbacks_ran_flags.all());
for (std::size_t i = 0; i < delays.size(); i++) {
const double delay = static_cast<double>(delays[i]);
const double micro = delay / 1000.0f;
const double mili = micro / 1000.0f;
printf("HostTimer Pausing Delay[%zu]: %.3f %.6f\n", i, micro, mili);
}
}
TEST_CASE("CoreTiming[FairSharing]", "[core]") {
#pragma optimize("", off)
u64 TestTimerSpeed(Core::Timing::CoreTiming& core_timing) {
u64 start = core_timing.GetGlobalTimeNs().count();
u64 placebo = 0;
for (std::size_t i = 0; i < 1000; i++) {
placebo += core_timing.GetGlobalTimeNs().count();
}
u64 end = core_timing.GetGlobalTimeNs().count();
return (end - start);
}
#pragma optimize("", on)
TEST_CASE("CoreTiming[BasicOrderNoPausing]", "[core]") {
ScopeInit guard;
auto& core_timing = guard.core_timing;
std::vector<std::shared_ptr<Core::Timing::EventType>> events{
Core::Timing::CreateEvent("callbackA", HostCallbackTemplate<0>),
Core::Timing::CreateEvent("callbackB", HostCallbackTemplate<1>),
Core::Timing::CreateEvent("callbackC", HostCallbackTemplate<2>),
Core::Timing::CreateEvent("callbackD", HostCallbackTemplate<3>),
Core::Timing::CreateEvent("callbackE", HostCallbackTemplate<4>),
};
std::shared_ptr<Core::Timing::EventType> empty_callback =
Core::Timing::CreateEvent("empty_callback", EmptyCallback);
core_timing.SyncPause(true);
core_timing.SyncPause(false);
callbacks_done = 0;
u64 MAX_CALLBACKS = 10;
for (std::size_t i = 0; i < 10; i++) {
core_timing.ScheduleEvent(i * 3333U, empty_callback, 0);
expected_callback = 0;
u64 start = core_timing.GetGlobalTimeNs().count();
u64 one_micro = 1000U;
for (std::size_t i = 0; i < events.size(); i++) {
u64 order = calls_order[i];
core_timing.ScheduleEvent(i * one_micro + 100U, events[order], CB_IDS[order]);
}
u64 end = core_timing.GetGlobalTimeNs().count();
const double scheduling_time = static_cast<double>(end - start);
const double timer_time = static_cast<double>(TestTimerSpeed(core_timing));
while (core_timing.HasPendingEvents())
;
REQUIRE(callbacks_ran_flags.all());
for (std::size_t i = 0; i < delays.size(); i++) {
const double delay = static_cast<double>(delays[i]);
const double micro = delay / 1000.0f;
const double mili = micro / 1000.0f;
printf("HostTimer No Pausing Delay[%zu]: %.3f %.6f\n", i, micro, mili);
}
const s64 advances = MAX_SLICE_LENGTH / 10;
core_timing.ResetRun();
u64 current_time = core_timing.GetTicks();
bool keep_running{};
do {
keep_running = false;
for (u32 active_core = 0; active_core < 4; ++active_core) {
core_timing.SwitchContext(active_core);
if (core_timing.CanCurrentContextRun()) {
core_timing.AddTicks(std::min<s64>(advances, core_timing.GetDowncount()));
core_timing.Advance();
}
keep_running |= core_timing.CanCurrentContextRun();
}
} while (keep_running);
u64 current_time_2 = core_timing.GetTicks();
REQUIRE(MAX_CALLBACKS == callbacks_done);
REQUIRE(current_time_2 == current_time + MAX_SLICE_LENGTH * 4);
}
TEST_CASE("Core::Timing[PredictableLateness]", "[core]") {
ScopeInit guard;
auto& core_timing = guard.core_timing;
std::shared_ptr<Core::Timing::EventType> cb_a =
Core::Timing::CreateEvent("callbackA", CallbackTemplate<0>);
std::shared_ptr<Core::Timing::EventType> cb_b =
Core::Timing::CreateEvent("callbackB", CallbackTemplate<1>);
// Enter slice 0
core_timing.ResetRun();
core_timing.ScheduleEvent(100, cb_a, CB_IDS[0]);
core_timing.ScheduleEvent(200, cb_b, CB_IDS[1]);
AdvanceAndCheck(core_timing, 0, 0, 10, -10); // (100 - 10)
AdvanceAndCheck(core_timing, 1, 1, 50, -50);
const double micro = scheduling_time / 1000.0f;
const double mili = micro / 1000.0f;
printf("HostTimer No Pausing Scheduling Time: %.3f %.6f\n", micro, mili);
printf("HostTimer No Pausing Timer Time: %.3f %.6f\n", timer_time / 1000.f,
timer_time / 1000000.f);
}

5
src/video_core/gpu.cpp
View File

@ -2,6 +2,8 @@
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include <chrono>
#include "common/assert.h"
#include "common/microprofile.h"
#include "core/core.h"
@ -154,8 +156,7 @@ u64 GPU::GetTicks() const {
constexpr u64 gpu_ticks_num = 384;
constexpr u64 gpu_ticks_den = 625;
const u64 cpu_ticks = system.CoreTiming().GetTicks();
u64 nanoseconds = Core::Timing::CyclesToNs(cpu_ticks).count();
u64 nanoseconds = system.CoreTiming().GetGlobalTimeNs().count();
if (Settings::values.use_fast_gpu_time) {
nanoseconds /= 256;
}

32
src/yuzu/bootmanager.cpp
View File

@ -52,6 +52,8 @@ void EmuThread::run() {
emit LoadProgress(VideoCore::LoadCallbackStage::Prepare, 0, 0);
Core::System::GetInstance().RegisterHostThread();
Core::System::GetInstance().Renderer().Rasterizer().LoadDiskResources(
stop_run, [this](VideoCore::LoadCallbackStage stage, std::size_t value, std::size_t total) {
emit LoadProgress(stage, value, total);
@ -65,28 +67,30 @@ void EmuThread::run() {
bool was_active = false;
while (!stop_run) {
if (running) {
if (!was_active)
if (was_active) {
emit DebugModeLeft();
}
Core::System::ResultStatus result = Core::System::GetInstance().RunLoop();
running_guard = true;
Core::System::ResultStatus result = Core::System::GetInstance().Run();
if (result != Core::System::ResultStatus::Success) {
running_guard = false;
this->SetRunning(false);
emit ErrorThrown(result, Core::System::GetInstance().GetStatusDetails());
}
running_wait.Wait();
result = Core::System::GetInstance().Pause();
if (result != Core::System::ResultStatus::Success) {
running_guard = false;
this->SetRunning(false);
emit ErrorThrown(result, Core::System::GetInstance().GetStatusDetails());
}
running_guard = false;
was_active = running || exec_step;
if (!was_active && !stop_run)
emit DebugModeEntered();
} else if (exec_step) {
if (!was_active)
emit DebugModeLeft();
exec_step = false;
Core::System::GetInstance().SingleStep();
was_active = true;
emit DebugModeEntered();
yieldCurrentThread();
was_active = false;
} else if (exec_step) {
UNIMPLEMENTED();
} else {
std::unique_lock lock{running_mutex};
running_cv.wait(lock, [this] { return IsRunning() || exec_step || stop_run; });

7
src/yuzu/bootmanager.h
View File

@ -59,6 +59,11 @@ public:
this->running = running;
lock.unlock();
running_cv.notify_all();
if (!running) {
running_wait.Set();
/// Wait until effectively paused
while (running_guard);
}
}
/**
@ -84,6 +89,8 @@ private:
std::atomic_bool stop_run{false};
std::mutex running_mutex;
std::condition_variable running_cv;
Common::Event running_wait{};
std::atomic_bool running_guard{false};
signals:
/**

6
src/yuzu/debugger/wait_tree.cpp
View File

@ -59,8 +59,10 @@ std::vector<std::unique_ptr<WaitTreeThread>> WaitTreeItem::MakeThreadItemList()
std::size_t row = 0;
auto add_threads = [&](const std::vector<std::shared_ptr<Kernel::Thread>>& threads) {
for (std::size_t i = 0; i < threads.size(); ++i) {
item_list.push_back(std::make_unique<WaitTreeThread>(*threads[i]));
item_list.back()->row = row;
if (!threads[i]->IsHLEThread()) {
item_list.push_back(std::make_unique<WaitTreeThread>(*threads[i]));
item_list.back()->row = row;
}
++row;
}
};

2
src/yuzu_cmd/yuzu.cpp
View File

@ -237,7 +237,7 @@ int main(int argc, char** argv) {
std::thread render_thread([&emu_window] { emu_window->Present(); });
while (emu_window->IsOpen()) {
system.RunLoop();
//system.RunLoop();
}
render_thread.join();

2
src/yuzu_tester/yuzu.cpp
View File

@ -256,7 +256,7 @@ int main(int argc, char** argv) {
system.Renderer().Rasterizer().LoadDiskResources();
while (!finished) {
system.RunLoop();
//system.RunLoop();
}
detached_tasks.WaitForAllTasks();