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kern: KAutoObject destruction is now scheduled for next dpc-time

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This commit is contained in:
Michael Scire 2021-04-07 13:38:51 -07:00 • committed by SciresM
parent 15956fcf9a
commit 4407237f5b
7 changed files with 94 additions and 18 deletions
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55
libraries/libmesosphere/include/mesosphere/kern_k_thread.hpp
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@ -77,8 +77,9 @@ namespace ams::kern {
};
enum DpcFlag : u32 {
DpcFlag_Terminating = (1 << 0),
DpcFlag_Terminated = (1 << 1),
DpcFlag_Terminating = (1 << 0),
DpcFlag_Terminated = (1 << 1),
DpcFlag_PerformDestruction = (1 << 2),
};
struct StackParameters {
@ -203,6 +204,7 @@ namespace ams::kern {
WaiterList m_pinned_waiter_list{};
KThread *m_lock_owner{};
uintptr_t m_debug_params[3]{};
KAutoObject *m_closed_object{};
u32 m_address_key_value{};
u32 m_suspend_request_flags{};
u32 m_suspend_allowed_flags{};
@ -324,15 +326,15 @@ namespace ams::kern {
}
ALWAYS_INLINE void RegisterDpc(DpcFlag flag) {
this->GetStackParameters().dpc_flags |= flag;
this->GetStackParameters().dpc_flags.fetch_or(flag);
}
ALWAYS_INLINE void ClearDpc(DpcFlag flag) {
this->GetStackParameters().dpc_flags &= ~flag;
this->GetStackParameters().dpc_flags.fetch_and(~flag);;
}
ALWAYS_INLINE u8 GetDpc() const {
return this->GetStackParameters().dpc_flags;
return this->GetStackParameters().dpc_flags.load();
}
ALWAYS_INLINE bool HasDpc() const {
@ -491,6 +493,39 @@ namespace ams::kern {
void SetInterruptFlag() const { static_cast<ams::svc::ThreadLocalRegion *>(m_tls_heap_address)->interrupt_flag = 1; }
void ClearInterruptFlag() const { static_cast<ams::svc::ThreadLocalRegion *>(m_tls_heap_address)->interrupt_flag = 0; }
ALWAYS_INLINE KAutoObject *GetClosedObject() { return m_closed_object; }
ALWAYS_INLINE void SetClosedObject(KAutoObject *object) {
MESOSPHERE_ASSERT(object != nullptr);
/* Set the object to destroy. */
m_closed_object = object;
/* Schedule destruction DPC. */
if ((this->GetStackParameters().dpc_flags.load(std::memory_order_relaxed) & DpcFlag_PerformDestruction) == 0) {
this->RegisterDpc(DpcFlag_PerformDestruction);
}
}
ALWAYS_INLINE void DestroyClosedObjects() {
/* Destroy all objects that have been closed. */
if (KAutoObject *cur = m_closed_object; cur != nullptr) {
do {
/* Set our closed object as the next to close. */
m_closed_object = cur->GetNextClosedObject();
/* Destroy the current object. */
cur->Destroy();
/* Advance. */
cur = m_closed_object;
} while (cur != nullptr);
/* Clear the pending DPC. */
this->ClearDpc(DpcFlag_PerformDestruction);
}
}
constexpr void SetDebugAttached() { m_debug_attached = true; }
constexpr bool IsAttachedToDebugger() const { return m_debug_attached; }
@ -603,4 +638,14 @@ namespace ams::kern {
return GetCurrentThread().GetCurrentCore();
}
ALWAYS_INLINE void KAutoObject::ScheduleDestruction() {
MESOSPHERE_ASSERT_THIS();
/* Set our object to destroy. */
m_next_closed_object = GetCurrentThread().GetClosedObject();
/* Set ourselves as the thread's next object to destroy. */
GetCurrentThread().SetClosedObject(this);
}
}