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kernel: implement KProcess suspension

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This commit is contained in:
Liam 2022-06-13 18:36:30 -04:00
parent c6e7ca562a
commit 888f499188
12 changed files with 204 additions and 217 deletions
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59
src/core/hle/kernel/k_process.cpp
View file

@ -275,11 +275,15 @@ void KProcess::RemoveSharedMemory(KSharedMemory* shmem, [[maybe_unused]] VAddr a
shmem->Close();
}
void KProcess::RegisterThread(const KThread* thread) {
void KProcess::RegisterThread(KThread* thread) {
KScopedLightLock lk{list_lock};
thread_list.push_back(thread);
}
void KProcess::UnregisterThread(const KThread* thread) {
void KProcess::UnregisterThread(KThread* thread) {
KScopedLightLock lk{list_lock};
thread_list.remove(thread);
}
@ -297,6 +301,50 @@ ResultCode KProcess::Reset() {
return ResultSuccess;
}
ResultCode KProcess::SetActivity(ProcessActivity activity) {
// Lock ourselves and the scheduler.
KScopedLightLock lk{state_lock};
KScopedLightLock list_lk{list_lock};
KScopedSchedulerLock sl{kernel};
// Validate our state.
R_UNLESS(status != ProcessStatus::Exiting, ResultInvalidState);
R_UNLESS(status != ProcessStatus::Exited, ResultInvalidState);
// Either pause or resume.
if (activity == ProcessActivity::Paused) {
// Verify that we're not suspended.
if (is_suspended) {
return ResultInvalidState;
}
// Suspend all threads.
for (auto* thread : GetThreadList()) {
thread->RequestSuspend(SuspendType::Process);
}
// Set ourselves as suspended.
SetSuspended(true);
} else {
ASSERT(activity == ProcessActivity::Runnable);
// Verify that we're suspended.
if (!is_suspended) {
return ResultInvalidState;
}
// Resume all threads.
for (auto* thread : GetThreadList()) {
thread->Resume(SuspendType::Process);
}
// Set ourselves as resumed.
SetSuspended(false);
}
return ResultSuccess;
}
ResultCode KProcess::LoadFromMetadata(const FileSys::ProgramMetadata& metadata,
std::size_t code_size) {
program_id = metadata.GetTitleID();
@ -556,9 +604,10 @@ bool KProcess::IsSignaled() const {
}
KProcess::KProcess(KernelCore& kernel_)
: KAutoObjectWithSlabHeapAndContainer{kernel_},
page_table{std::make_unique<KPageTable>(kernel_.System())}, handle_table{kernel_},
address_arbiter{kernel_.System()}, condition_var{kernel_.System()}, state_lock{kernel_} {}
: KAutoObjectWithSlabHeapAndContainer{kernel_}, page_table{std::make_unique<KPageTable>(
kernel_.System())},
handle_table{kernel_}, address_arbiter{kernel_.System()}, condition_var{kernel_.System()},
state_lock{kernel_}, list_lock{kernel_} {}
KProcess::~KProcess() = default;

16
src/core/hle/kernel/k_process.h
View file

@ -63,6 +63,11 @@ enum class ProcessStatus {
DebugBreak,
};
enum class ProcessActivity : u32 {
Runnable,
Paused,
};
class KProcess final : public KAutoObjectWithSlabHeapAndContainer<KProcess, KWorkerTask> {
KERNEL_AUTOOBJECT_TRAITS(KProcess, KSynchronizationObject);
@ -282,17 +287,17 @@ public:
u64 GetTotalPhysicalMemoryUsedWithoutSystemResource() const;
/// Gets the list of all threads created with this process as their owner.
const std::list<const KThread*>& GetThreadList() const {
std::list<KThread*>& GetThreadList() {
return thread_list;
}
/// Registers a thread as being created under this process,
/// adding it to this process' thread list.
void RegisterThread(const KThread* thread);
void RegisterThread(KThread* thread);
/// Unregisters a thread from this process, removing it
/// from this process' thread list.
void UnregisterThread(const KThread* thread);
void UnregisterThread(KThread* thread);
/// Clears the signaled state of the process if and only if it's signaled.
///
@ -347,6 +352,8 @@ public:
void DoWorkerTaskImpl();
ResultCode SetActivity(ProcessActivity activity);
void PinCurrentThread(s32 core_id);
void UnpinCurrentThread(s32 core_id);
void UnpinThread(KThread* thread);
@ -442,7 +449,7 @@ private:
std::array<u64, RANDOM_ENTROPY_SIZE> random_entropy{};
/// List of threads that are running with this process as their owner.
std::list<const KThread*> thread_list;
std::list<KThread*> thread_list;
/// List of shared memory that are running with this process as their owner.
std::list<KSharedMemoryInfo*> shared_memory_list;
@ -475,6 +482,7 @@ private:
KThread* exception_thread{};
KLightLock state_lock;
KLightLock list_lock;
using TLPTree =
Common::IntrusiveRedBlackTreeBaseTraits<KThreadLocalPage>::TreeType<KThreadLocalPage>;

8
src/core/hle/kernel/k_thread.cpp
View file

@ -267,15 +267,15 @@ ResultCode KThread::InitializeDummyThread(KThread* thread) {
ResultCode KThread::InitializeIdleThread(Core::System& system, KThread* thread, s32 virt_core) {
return InitializeThread(thread, {}, {}, {}, IdleThreadPriority, virt_core, {}, ThreadType::Main,
Core::CpuManager::GetIdleThreadStartFunc(),
system.GetCpuManager().GetStartFuncParamater());
system.GetCpuManager().GetStartFuncParameter());
}
ResultCode KThread::InitializeHighPriorityThread(Core::System& system, KThread* thread,
KThreadFunction func, uintptr_t arg,
s32 virt_core) {
return InitializeThread(thread, func, arg, {}, {}, virt_core, nullptr, ThreadType::HighPriority,
Core::CpuManager::GetSuspendThreadStartFunc(),
system.GetCpuManager().GetStartFuncParamater());
Core::CpuManager::GetShutdownThreadStartFunc(),
system.GetCpuManager().GetStartFuncParameter());
}
ResultCode KThread::InitializeUserThread(Core::System& system, KThread* thread,
@ -284,7 +284,7 @@ ResultCode KThread::InitializeUserThread(Core::System& system, KThread* thread,
system.Kernel().GlobalSchedulerContext().AddThread(thread);
return InitializeThread(thread, func, arg, user_stack_top, prio, virt_core, owner,
ThreadType::User, Core::CpuManager::GetGuestThreadStartFunc(),
system.GetCpuManager().GetStartFuncParamater());
system.GetCpuManager().GetStartFuncParameter());
}
void KThread::PostDestroy(uintptr_t arg) {

49
src/core/hle/kernel/kernel.cpp
View file

@ -76,7 +76,7 @@ struct KernelCore::Impl {
InitializeMemoryLayout();
Init::InitializeKPageBufferSlabHeap(system);
InitializeSchedulers();
InitializeSuspendThreads();
InitializeShutdownThreads();
InitializePreemption(kernel);
RegisterHostThread();
@ -143,9 +143,9 @@ struct KernelCore::Impl {
CleanupObject(system_resource_limit);
for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) {
if (suspend_threads[core_id]) {
suspend_threads[core_id]->Close();
suspend_threads[core_id] = nullptr;
if (shutdown_threads[core_id]) {
shutdown_threads[core_id]->Close();
shutdown_threads[core_id] = nullptr;
}
schedulers[core_id]->Finalize();
@ -247,14 +247,14 @@ struct KernelCore::Impl {
system.CoreTiming().ScheduleEvent(time_interval, preemption_event);
}
void InitializeSuspendThreads() {
void InitializeShutdownThreads() {
for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) {
suspend_threads[core_id] = KThread::Create(system.Kernel());
ASSERT(KThread::InitializeHighPriorityThread(system, suspend_threads[core_id], {}, {},
shutdown_threads[core_id] = KThread::Create(system.Kernel());
ASSERT(KThread::InitializeHighPriorityThread(system, shutdown_threads[core_id], {}, {},
core_id)
.IsSuccess());
suspend_threads[core_id]->SetName(fmt::format("SuspendThread:{}", core_id));
suspend_threads[core_id]->DisableDispatch();
shutdown_threads[core_id]->SetName(fmt::format("SuspendThread:{}", core_id));
shutdown_threads[core_id]->DisableDispatch();
}
}
@ -769,7 +769,7 @@ struct KernelCore::Impl {
std::weak_ptr<ServiceThread> default_service_thread;
Common::ThreadWorker service_threads_manager;
std::array<KThread*, Core::Hardware::NUM_CPU_CORES> suspend_threads;
std::array<KThread*, Core::Hardware::NUM_CPU_CORES> shutdown_threads;
std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES> interrupts{};
std::array<std::unique_ptr<Kernel::KScheduler>, Core::Hardware::NUM_CPU_CORES> schedulers{};
@ -920,6 +920,12 @@ const KAutoObjectWithListContainer& KernelCore::ObjectListContainer() const {
return *impl->global_object_list_container;
}
void KernelCore::InterruptAllPhysicalCores() {
for (auto& physical_core : impl->cores) {
physical_core.Interrupt();
}
}
void KernelCore::InvalidateAllInstructionCaches() {
for (auto& physical_core : impl->cores) {
physical_core.ArmInterface().ClearInstructionCache();
@ -1067,19 +1073,22 @@ const Kernel::KSharedMemory& KernelCore::GetHidBusSharedMem() const {
return *impl->hidbus_shared_mem;
}
void KernelCore::Suspend(bool in_suspention) {
const bool should_suspend = exception_exited || in_suspention;
{
KScopedSchedulerLock lock(*this);
const auto state = should_suspend ? ThreadState::Runnable : ThreadState::Waiting;
for (u32 core_id = 0; core_id < Core::Hardware::NUM_CPU_CORES; core_id++) {
impl->suspend_threads[core_id]->SetState(state);
impl->suspend_threads[core_id]->SetWaitReasonForDebugging(
ThreadWaitReasonForDebugging::Suspended);
}
void KernelCore::Suspend(bool suspended) {
const bool should_suspend{exception_exited || suspended};
const auto activity = should_suspend ? ProcessActivity::Paused : ProcessActivity::Runnable;
for (auto* process : GetProcessList()) {
process->SetActivity(activity);
}
}
void KernelCore::ShutdownCores() {
for (auto* thread : impl->shutdown_threads) {
void(thread->Run());
}
InterruptAllPhysicalCores();
}
bool KernelCore::IsMulticore() const {
return impl->is_multicore;
}

11
src/core/hle/kernel/kernel.h
View file

@ -184,6 +184,8 @@ public:
const std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES>& Interrupts() const;
void InterruptAllPhysicalCores();
void InvalidateAllInstructionCaches();
void InvalidateCpuInstructionCacheRange(VAddr addr, std::size_t size);
@ -269,12 +271,15 @@ public:
/// Gets the shared memory object for HIDBus services.
const Kernel::KSharedMemory& GetHidBusSharedMem() const;
/// Suspend/unsuspend the OS.
void Suspend(bool in_suspention);
/// Suspend/unsuspend all processes.
void Suspend(bool suspend);
/// Exceptional exit the OS.
/// Exceptional exit all processes.
void ExceptionalExit();
/// Notify emulated CPU cores to shut down.
void ShutdownCores();
bool IsMulticore() const;
bool IsShuttingDown() const;

2
src/core/hle/kernel/svc.cpp
View file

@ -2530,7 +2530,7 @@ static ResultCode GetThreadList(Core::System& system, u32* out_num_threads, VAdd
return ResultOutOfRange;
}
const auto* const current_process = system.Kernel().CurrentProcess();
auto* const current_process = system.Kernel().CurrentProcess();
const auto total_copy_size = out_thread_ids_size * sizeof(u64);
if (out_thread_ids_size > 0 &&

4
src/core/hle/service/nvdrv/devices/nvhost_ctrl.cpp
View file

@ -150,9 +150,9 @@ NvResult nvhost_ctrl::IocCtrlEventWait(const std::vector<u8>& input, std::vector
event.event->GetWritableEvent().Clear();
if (events_interface.failed[event_id]) {
{
auto lk = system.StallCPU();
auto lk = system.StallProcesses();
gpu.WaitFence(params.syncpt_id, target_value);
system.UnstallCPU();
system.UnstallProcesses();
}
std::memcpy(output.data(), &params, sizeof(params));
events_interface.failed[event_id] = false;