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Addapt thread class to the new Scheduler

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This commit is contained in:
Fernando Sahmkow 2019-03-29 17:01:46 -04:00 committed by FernandoS27
parent b164d8ee53
commit a1ac0c6cb4
2 changed files with 237 additions and 60 deletions
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242
src/core/hle/kernel/thread.cpp
View file

@ -45,15 +45,7 @@ void Thread::Stop() {
callback_handle);
kernel.ThreadWakeupCallbackHandleTable().Close(callback_handle);
callback_handle = 0;
// Clean up thread from ready queue
// This is only needed when the thread is terminated forcefully (SVC TerminateProcess)
if (status == ThreadStatus::Ready || status == ThreadStatus::Paused) {
scheduler->UnscheduleThread(this, current_priority);
}
status = ThreadStatus::Dead;
SetStatus(ThreadStatus::Dead);
WakeupAllWaitingThreads();
// Clean up any dangling references in objects that this thread was waiting for
@ -132,13 +124,11 @@ void Thread::ResumeFromWait() {
wakeup_callback = nullptr;
if (activity == ThreadActivity::Paused) {
status = ThreadStatus::Paused;
SetStatus(ThreadStatus::Paused);
return;
}
status = ThreadStatus::Ready;
ChangeScheduler();
SetStatus(ThreadStatus::Ready);
}
void Thread::CancelWait() {
@ -205,9 +195,9 @@ ResultVal<SharedPtr<Thread>> Thread::Create(KernelCore& kernel, std::string name
thread->name = std::move(name);
thread->callback_handle = kernel.ThreadWakeupCallbackHandleTable().Create(thread).Unwrap();
thread->owner_process = &owner_process;
auto& scheduler = kernel.GlobalScheduler();
scheduler.AddThread(thread);
thread->tls_address = thread->owner_process->CreateTLSRegion();
thread->scheduler = &system.Scheduler(processor_id);
thread->scheduler->AddThread(thread);
thread->owner_process->RegisterThread(thread.get());
@ -250,6 +240,22 @@ void Thread::SetStatus(ThreadStatus new_status) {
return;
}
switch (new_status) {
case ThreadStatus::Ready:
case ThreadStatus::Running:
SetSchedulingStatus(ThreadSchedStatus::Runnable);
break;
case ThreadStatus::Dormant:
SetSchedulingStatus(ThreadSchedStatus::None);
break;
case ThreadStatus::Dead:
SetSchedulingStatus(ThreadSchedStatus::Exited);
break;
default:
SetSchedulingStatus(ThreadSchedStatus::Paused);
break;
}
if (status == ThreadStatus::Running) {
last_running_ticks = Core::System::GetInstance().CoreTiming().GetTicks();
}
@ -311,8 +317,7 @@ void Thread::UpdatePriority() {
return;
}
scheduler->SetThreadPriority(this, new_priority);
current_priority = new_priority;
SetCurrentPriority(new_priority);
if (!lock_owner) {
return;
@ -328,47 +333,7 @@ void Thread::UpdatePriority() {
}
void Thread::ChangeCore(u32 core, u64 mask) {
ideal_core = core;
affinity_mask = mask;
ChangeScheduler();
}
void Thread::ChangeScheduler() {
if (status != ThreadStatus::Ready) {
return;
}
auto& system = Core::System::GetInstance();
std::optional<s32> new_processor_id{GetNextProcessorId(affinity_mask)};
if (!new_processor_id) {
new_processor_id = processor_id;
}
if (ideal_core != -1 && system.Scheduler(ideal_core).GetCurrentThread() == nullptr) {
new_processor_id = ideal_core;
}
ASSERT(*new_processor_id < 4);
// Add thread to new core's scheduler
auto& next_scheduler = system.Scheduler(*new_processor_id);
if (*new_processor_id != processor_id) {
// Remove thread from previous core's scheduler
scheduler->RemoveThread(this);
next_scheduler.AddThread(this);
}
processor_id = *new_processor_id;
// If the thread was ready, unschedule from the previous core and schedule on the new core
scheduler->UnscheduleThread(this, current_priority);
next_scheduler.ScheduleThread(this, current_priority);
// Change thread's scheduler
scheduler = &next_scheduler;
system.CpuCore(processor_id).PrepareReschedule();
SetCoreAndAffinityMask(core, mask);
}
bool Thread::AllWaitObjectsReady() const {
@ -391,7 +356,7 @@ void Thread::SetActivity(ThreadActivity value) {
if (status == ThreadStatus::Ready) {
status = ThreadStatus::Paused;
} else if (status == ThreadStatus::Running) {
status = ThreadStatus::Paused;
SetStatus(ThreadStatus::Paused);
Core::System::GetInstance().CpuCore(processor_id).PrepareReschedule();
}
} else if (status == ThreadStatus::Paused) {
@ -408,6 +373,165 @@ void Thread::Sleep(s64 nanoseconds) {
WakeAfterDelay(nanoseconds);
}
void Thread::YieldType0() {
auto& scheduler = kernel.GlobalScheduler();
scheduler.YieldThread(this);
}
void Thread::YieldType1() {
auto& scheduler = kernel.GlobalScheduler();
scheduler.YieldThreadAndBalanceLoad(this);
}
void Thread::YieldType2() {
auto& scheduler = kernel.GlobalScheduler();
scheduler.YieldThreadAndWaitForLoadBalancing(this);
}
void Thread::SetSchedulingStatus(ThreadSchedStatus new_status) {
u32 old_flags = scheduling_state;
scheduling_state =
(scheduling_state & ThreadSchedMasks::HighMask) | static_cast<u32>(new_status);
AdjustSchedulingOnStatus(old_flags);
}
void Thread::SetCurrentPriority(u32 new_priority) {
u32 old_priority = current_priority;
current_priority = new_priority;
AdjustSchedulingOnPriority(old_priority);
}
ResultCode Thread::SetCoreAndAffinityMask(s32 new_core, u64 new_affinity_mask) {
auto HighestSetCore = [](u64 mask, u32 max_cores) {
for (s32 core = max_cores - 1; core >= 0; core--) {
if (((mask >> core) & 1) != 0)
return core;
}
return -1;
};
bool use_override = affinity_override_count != 0;
// The value -3 is "do not change the ideal core".
if (new_core == -3) {
new_core = use_override ? ideal_core_override : ideal_core;
if ((new_affinity_mask & (1 << new_core)) == 0) {
return ERR_INVALID_COMBINATION;
}
}
if (use_override) {
ideal_core_override = new_core;
affinity_mask_override = new_affinity_mask;
} else {
u64 old_affinity_mask = affinity_mask;
ideal_core = new_core;
affinity_mask = new_affinity_mask;
if (old_affinity_mask != new_affinity_mask) {
s32 old_core = processor_id;
if (processor_id >= 0 && ((affinity_mask >> processor_id) & 1) == 0) {
if (ideal_core < 0) {
processor_id = HighestSetCore(affinity_mask, GlobalScheduler::NUM_CPU_CORES);
} else {
processor_id = ideal_core;
}
}
AdjustSchedulingOnAffinity(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 & ThreadSchedMasks::LowMask) ==
ThreadSchedStatus::Runnable) {
// In this case the thread was running, now it's pausing/exitting
if (processor_id >= 0)
scheduler.Unschedule(current_priority, processor_id, this);
for (s32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (core != 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, processor_id, this);
for (s32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (core != 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 = Core::System::GetInstance().GlobalScheduler();
if (processor_id >= 0) {
scheduler.Unschedule(old_priority, processor_id, this);
}
for (s32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (core != 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, processor_id, this);
} else {
scheduler.Schedule(current_priority, processor_id, this);
}
}
for (s32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (core != 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 = Core::System::GetInstance().GlobalScheduler();
if (GetSchedulingStatus() != ThreadSchedStatus::Runnable ||
current_priority >= THREADPRIO_COUNT)
return;
for (s32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (((old_affinity_mask >> core) & 1) != 0) {
if (core == old_core) {
scheduler.Unschedule(current_priority, core, this);
} else {
scheduler.Unsuggest(current_priority, core, this);
}
}
}
for (s32 core = 0; core < GlobalScheduler::NUM_CPU_CORES; core++) {
if (((affinity_mask >> core) & 1) != 0) {
if (core == processor_id) {
scheduler.Schedule(current_priority, core, this);
} else {
scheduler.Suggest(current_priority, core, this);
}
}
}
scheduler.SetReselectionPending();
}
////////////////////////////////////////////////////////////////////////////////////////////////////
/**

55
src/core/hle/kernel/thread.h
View file

@ -75,6 +75,21 @@ enum class ThreadActivity : u32 {
Paused = 1,
};
enum class ThreadSchedStatus : u32 { None = 0, Paused = 1, Runnable = 2, Exited = 3 };
enum ThreadSchedFlags : u32 {
ProcessPauseFlag = 1 << 4,
ThreadPauseFlag = 1 << 5,
ProcessDebugPauseFlag = 1 << 6,
KernelInitPauseFlag = 1 << 8,
};
enum ThreadSchedMasks : u32 {
LowMask = 0x000f,
HighMask = 0xfff0,
ForcePauseMask = 0x0070,
};
class Thread final : public WaitObject {
public:
using MutexWaitingThreads = std::vector<SharedPtr<Thread>>;
@ -278,6 +293,10 @@ public:
return processor_id;
}
void SetProcessorID(s32 new_core) {
processor_id = new_core;
}
Process* GetOwnerProcess() {
return owner_process;
}
@ -383,11 +402,38 @@ public:
/// Sleeps this thread for the given amount of nanoseconds.
void Sleep(s64 nanoseconds);
/// Yields this thread without rebalancing loads.
void YieldType0();
/// Yields this thread and does a load rebalancing.
void YieldType1();
/// Yields this thread and if the core is left idle, loads are rebalanced
void YieldType2();
ThreadSchedStatus GetSchedulingStatus() {
return static_cast<ThreadSchedStatus>(scheduling_state & ThreadSchedMasks::LowMask);
}
bool IsRunning() const {
return is_running;
}
void SetIsRunning(bool value) {
is_running = value;
}
private:
explicit Thread(KernelCore& kernel);
~Thread() override;
void ChangeScheduler();
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);
Core::ARM_Interface::ThreadContext context{};
@ -453,6 +499,13 @@ private:
ThreadActivity activity = ThreadActivity::Normal;
s32 ideal_core_override = -1;
u64 affinity_mask_override = 0x1;
u32 affinity_override_count = 0;
u32 scheduling_state = 0;
bool is_running = false;
std::string name;
};