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hle: kernel: Migrate idle threads.

This commit is contained in:
bunnei 2021-04-02 23:25:32 -07:00
parent 479bd50b96
commit 0eeecde67c
2 changed files with 9 additions and 13 deletions
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16
src/core/hle/kernel/k_scheduler.cpp
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@ -623,7 +623,7 @@ KThread* KScheduler::GetCurrentThread() const {
if (auto result = current_thread.load(); result) { if (auto result = current_thread.load(); result) {
return result; return result;
} }
return idle_thread; return idle_thread.get();
} }
u64 KScheduler::GetLastContextSwitchTicks() const { u64 KScheduler::GetLastContextSwitchTicks() const {
@ -708,7 +708,7 @@ void KScheduler::ScheduleImpl() {
// We never want to schedule a null thread, so use the idle thread if we don't have a next. // We never want to schedule a null thread, so use the idle thread if we don't have a next.
if (next_thread == nullptr) { if (next_thread == nullptr) {
next_thread = idle_thread; next_thread = idle_thread.get();
} }
// If we're not actually switching thread, there's nothing to do. // If we're not actually switching thread, there's nothing to do.
@ -769,7 +769,7 @@ void KScheduler::SwitchToCurrent() {
break; break;
} }
} }
auto thread = next_thread ? next_thread : idle_thread; auto thread = next_thread ? next_thread : idle_thread.get();
Common::Fiber::YieldTo(switch_fiber, *thread->GetHostContext()); Common::Fiber::YieldTo(switch_fiber, *thread->GetHostContext());
} while (!is_switch_pending()); } while (!is_switch_pending());
} }
@ -792,13 +792,9 @@ void KScheduler::UpdateLastContextSwitchTime(KThread* thread, Process* process)
} }
void KScheduler::Initialize() { void KScheduler::Initialize() {
std::string name = "Idle Thread Id:" + std::to_string(core_id); idle_thread = std::make_unique<KThread>(system.Kernel());
std::function<void(void*)> init_func = Core::CpuManager::GetIdleThreadStartFunc(); ASSERT(KThread::InitializeIdleThread(system, idle_thread.get(), core_id).IsSuccess());
void* init_func_parameter = system.GetCpuManager().GetStartFuncParamater(); idle_thread->SetName(fmt::format("IdleThread:{}", core_id));
auto thread_res = KThread::CreateThread(
system, ThreadType::Main, name, 0, KThread::IdleThreadPriority, 0,
static_cast<u32>(core_id), 0, nullptr, std::move(init_func), init_func_parameter);
idle_thread = thread_res.Unwrap().get();
} }
KScopedSchedulerLock::KScopedSchedulerLock(KernelCore& kernel) KScopedSchedulerLock::KScopedSchedulerLock(KernelCore& kernel)

6
src/core/hle/kernel/k_scheduler.h
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@ -51,7 +51,7 @@ public:
/// Returns true if the scheduler is idle /// Returns true if the scheduler is idle
[[nodiscard]] bool IsIdle() const { [[nodiscard]] bool IsIdle() const {
return GetCurrentThread() == idle_thread; return GetCurrentThread() == idle_thread.get();
} }
/// Gets the timestamp for the last context switch in ticks. /// Gets the timestamp for the last context switch in ticks.
@ -173,12 +173,12 @@ private:
KThread* prev_thread{}; KThread* prev_thread{};
std::atomic<KThread*> current_thread{}; std::atomic<KThread*> current_thread{};
KThread* idle_thread; std::unique_ptr<KThread> idle_thread;
std::shared_ptr<Common::Fiber> switch_fiber{}; std::shared_ptr<Common::Fiber> switch_fiber{};
struct SchedulingState { struct SchedulingState {
std::atomic<bool> needs_scheduling; std::atomic<bool> needs_scheduling{};
bool interrupt_task_thread_runnable{}; bool interrupt_task_thread_runnable{};
bool should_count_idle{}; bool should_count_idle{};
u64 idle_count{}; u64 idle_count{};