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kern: devirtualize KReadableEvent::Reset, KWorkerTask::DoWorkerTask

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This commit is contained in:
Michael Scire 2021-10-24 20:41:38 -07:00
parent fd187f952e
commit 54dde406bc
12 changed files with 62 additions and 24 deletions
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2
libraries/libmesosphere/include/mesosphere/kern_k_auto_object_container.hpp
View file

@ -96,7 +96,7 @@ namespace ams::kern {
size_t count = 0;
for (const auto &obj : list) {
AMS_AUDIT(obj.DynamicCast<const U *>() != nullptr);
MESOSPHERE_AUDIT(obj.DynamicCast<const U *>() != nullptr);
if (static_cast<const U &>(obj).GetOwner() == owner) {
++count;
}

11
libraries/libmesosphere/include/mesosphere/kern_k_interrupt_event.hpp
View file

@ -38,7 +38,16 @@ namespace ams::kern {
Result Initialize(int32_t interrupt_name, ams::svc::InterruptType type);
void Finalize();
virtual Result Reset() override;
Result Reset();
Result Clear() {
MESOSPHERE_ASSERT_THIS();
/* Try to perform a reset, succeeding unconditionally. */
this->Reset();
return ResultSuccess();
}
bool IsInitialized() const { return m_is_initialized; }

4
libraries/libmesosphere/include/mesosphere/kern_k_process.hpp
View file

@ -34,7 +34,7 @@
namespace ams::kern {
class KProcess final : public KAutoObjectWithSlabHeapAndContainer<KProcess, KSynchronizationObject>, public KWorkerTask {
class KProcess final : public KAutoObjectWithSlabHeapAndContainer<KProcess, KWorkerTask> {
MESOSPHERE_AUTOOBJECT_TRAITS(KProcess, KSynchronizationObject);
public:
enum State {
@ -399,7 +399,7 @@ namespace ams::kern {
return m_is_signaled;
}
virtual void DoWorkerTask() override;
void DoWorkerTaskImpl();
private:
void ChangeState(State new_state) {
if (m_state != new_state) {

15
libraries/libmesosphere/include/mesosphere/kern_k_readable_event.hpp
View file

@ -36,11 +36,22 @@ namespace ams::kern {
constexpr KEvent *GetParent() const { return m_parent; }
Result Signal();
Result Clear();
Result Reset();
Result Clear() {
MESOSPHERE_ASSERT_THIS();
/* Try to perform a reset, succeeding unconditionally. */
this->Reset();
return ResultSuccess();
}
virtual bool IsSignaled() const override;
virtual void Destroy() override;
virtual Result Reset();
/* NOTE: This is a virtual function in Nintendo's kernel. */
/* virtual Result Reset(); */
};
}

6
libraries/libmesosphere/include/mesosphere/kern_k_thread.hpp
View file

@ -32,7 +32,7 @@ namespace ams::kern {
using KThreadFunction = void (*)(uintptr_t);
class KThread final : public KAutoObjectWithSlabHeapAndContainer<KThread, KSynchronizationObject>, public util::IntrusiveListBaseNode<KThread>, public KTimerTask, public KWorkerTask {
class KThread final : public KAutoObjectWithSlabHeapAndContainer<KThread, KWorkerTask>, public util::IntrusiveListBaseNode<KThread>, public KTimerTask {
MESOSPHERE_AUTOOBJECT_TRAITS(KThread, KSynchronizationObject);
private:
friend class KProcess;
@ -235,7 +235,7 @@ namespace ams::kern {
bool m_resource_limit_release_hint;
public:
constexpr explicit KThread(util::ConstantInitializeTag)
: KAutoObjectWithSlabHeapAndContainer<KThread, KSynchronizationObject>(util::ConstantInitialize), KTimerTask(util::ConstantInitialize),
: KAutoObjectWithSlabHeapAndContainer<KThread, KWorkerTask>(util::ConstantInitialize), KTimerTask(util::ConstantInitialize),
m_process_list_node{}, m_condvar_arbiter_tree_node{util::ConstantInitialize}, m_priority{-1}, m_condvar_tree{}, m_condvar_key{},
m_thread_context{util::ConstantInitialize}, m_virtual_affinity_mask{}, m_physical_affinity_mask{}, m_thread_id{}, m_cpu_time{0}, m_address_key{Null<KProcessAddress>}, m_parent{},
m_kernel_stack_top{}, m_light_ipc_data{}, m_tls_address{Null<KProcessAddress>}, m_tls_heap_address{}, m_activity_pause_lock{}, m_sync_object_buffer{util::ConstantInitialize},
@ -622,7 +622,7 @@ namespace ams::kern {
virtual bool IsSignaled() const override;
void OnTimer();
virtual void DoWorkerTask() override;
void DoWorkerTaskImpl();
public:
static constexpr bool IsConditionVariableThreadTreeValid() {
return ConditionVariableThreadTreeTraits::IsValid();

13
libraries/libmesosphere/include/mesosphere/kern_k_worker_task.hpp
View file

@ -18,16 +18,23 @@
namespace ams::kern {
class KWorkerTask {
/* NOTE: We inherit KWorkerTask from KSynchronizationObject in order to devirtualize DoWorkerTask, which is exclusive to KThread/KProcess. */
/* This should be reverted, if Nintendo adds new types of worker tasks in the future. */
/* Nintendo has class KWorkerTask { ... } with identical interface but DoWorkerTask() virtual. */
class KWorkerTask : public KSynchronizationObject {
private:
KWorkerTask *m_next_task;
public:
constexpr ALWAYS_INLINE KWorkerTask() : m_next_task(nullptr) { /* ... */ }
constexpr ALWAYS_INLINE explicit KWorkerTask(util::ConstantInitializeTag) : KSynchronizationObject(util::ConstantInitialize), m_next_task(nullptr) { /* ... */ }
ALWAYS_INLINE explicit KWorkerTask() : m_next_task(nullptr) { /* ... */ }
constexpr ALWAYS_INLINE KWorkerTask *GetNextTask() const { return m_next_task; }
constexpr ALWAYS_INLINE void SetNextTask(KWorkerTask *task) { m_next_task = task; }
virtual void DoWorkerTask() = 0;
void DoWorkerTask();
};
}

2
libraries/libmesosphere/source/kern_k_process.cpp
View file

@ -432,7 +432,7 @@ namespace ams::kern {
return ResultSuccess();
}
void KProcess::DoWorkerTask() {
void KProcess::DoWorkerTaskImpl() {
/* Terminate child threads. */
TerminateChildren(this, nullptr);

8
libraries/libmesosphere/source/kern_k_readable_event.cpp
View file

@ -59,14 +59,6 @@ namespace ams::kern {
return ResultSuccess();
}
Result KReadableEvent::Clear() {
MESOSPHERE_ASSERT_THIS();
this->Reset();
return ResultSuccess();
}
Result KReadableEvent::Reset() {
MESOSPHERE_ASSERT_THIS();

2
libraries/libmesosphere/source/kern_k_thread.cpp
View file

@ -406,7 +406,7 @@ namespace ams::kern {
this->Close();
}
void KThread::DoWorkerTask() {
void KThread::DoWorkerTaskImpl() {
/* Finish the termination that was begun by Exit(). */
this->FinishTermination();
}

11
libraries/libmesosphere/source/kern_k_worker_task_manager.cpp
View file

@ -41,6 +41,17 @@ namespace ams::kern {
}
void KWorkerTask::DoWorkerTask() {
if (auto * const thread = this->DynamicCast<KThread *>(); thread != nullptr) {
return thread->DoWorkerTaskImpl();
} else {
auto * const process = this->DynamicCast<KProcess *>();
MESOSPHERE_ABORT_UNLESS(process != nullptr);
return process->DoWorkerTaskImpl();
}
}
void KWorkerTaskManager::Initialize(s32 priority) {
/* Reserve a thread from the system limit. */
MESOSPHERE_ABORT_UNLESS(Kernel::GetSystemResourceLimit().Reserve(ams::svc::LimitableResource_ThreadCountMax, 1));

4
libraries/libmesosphere/source/svc/kern_svc_event.cpp
View file

@ -48,9 +48,13 @@ namespace ams::kern::svc {
{
KScopedAutoObject readable_event = handle_table.GetObject<KReadableEvent>(event_handle);
if (readable_event.IsNotNull()) {
if (auto * const interrupt_event = readable_event->DynamicCast<KInterruptEvent *>(); interrupt_event != nullptr) {
return interrupt_event->Clear();
} else {
return readable_event->Clear();
}
}
}
return svc::ResultInvalidHandle();
}

4
libraries/libmesosphere/source/svc/kern_svc_synchronization.cpp
View file

@ -35,9 +35,13 @@ namespace ams::kern::svc {
{
KScopedAutoObject readable_event = handle_table.GetObject<KReadableEvent>(handle);
if (readable_event.IsNotNull()) {
if (auto * const interrupt_event = readable_event->DynamicCast<KInterruptEvent *>(); interrupt_event != nullptr) {
return interrupt_event->Reset();
} else {
return readable_event->Reset();
}
}
}
/* Try to reset as process. */
{