Merge pull request #7737 from bunnei/fix-dummy-thread-leak
Various fixes to HLE service thread management
This commit is contained in:
commit
68c8a1b170
9 changed files with 120 additions and 40 deletions
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@ -341,10 +341,6 @@ public:
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return *thread;
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return *thread;
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}
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}
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bool IsThreadWaiting() const {
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return is_thread_waiting;
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}
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private:
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private:
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friend class IPC::ResponseBuilder;
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friend class IPC::ResponseBuilder;
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@ -379,7 +375,6 @@ private:
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u32 domain_offset{};
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u32 domain_offset{};
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std::shared_ptr<SessionRequestManager> manager;
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std::shared_ptr<SessionRequestManager> manager;
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bool is_thread_waiting{};
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KernelCore& kernel;
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KernelCore& kernel;
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Core::Memory::Memory& memory;
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Core::Memory::Memory& memory;
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@ -45,6 +45,7 @@ concept KPriorityQueueMember = !std::is_reference_v<T> && requires(T & t) {
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{ t.GetActiveCore() } -> Common::ConvertibleTo<s32>;
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{ t.GetActiveCore() } -> Common::ConvertibleTo<s32>;
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{ t.GetPriority() } -> Common::ConvertibleTo<s32>;
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{ t.GetPriority() } -> Common::ConvertibleTo<s32>;
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{ t.IsDummyThread() } -> Common::ConvertibleTo<bool>;
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};
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};
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template <typename Member, size_t NumCores_, int LowestPriority, int HighestPriority>
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template <typename Member, size_t NumCores_, int LowestPriority, int HighestPriority>
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@ -349,24 +350,49 @@ public:
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// Mutators.
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// Mutators.
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constexpr void PushBack(Member* member) {
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constexpr void PushBack(Member* member) {
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// This is for host (dummy) threads that we do not want to enter the priority queue.
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if (member->IsDummyThread()) {
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return;
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}
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this->PushBack(member->GetPriority(), member);
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this->PushBack(member->GetPriority(), member);
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}
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}
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constexpr void Remove(Member* member) {
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constexpr void Remove(Member* member) {
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// This is for host (dummy) threads that we do not want to enter the priority queue.
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if (member->IsDummyThread()) {
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return;
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}
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this->Remove(member->GetPriority(), member);
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this->Remove(member->GetPriority(), member);
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}
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}
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constexpr void MoveToScheduledFront(Member* member) {
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constexpr void MoveToScheduledFront(Member* member) {
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// This is for host (dummy) threads that we do not want to enter the priority queue.
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if (member->IsDummyThread()) {
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return;
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}
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this->scheduled_queue.MoveToFront(member->GetPriority(), member->GetActiveCore(), member);
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this->scheduled_queue.MoveToFront(member->GetPriority(), member->GetActiveCore(), member);
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}
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}
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constexpr KThread* MoveToScheduledBack(Member* member) {
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constexpr KThread* MoveToScheduledBack(Member* member) {
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// This is for host (dummy) threads that we do not want to enter the priority queue.
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if (member->IsDummyThread()) {
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return {};
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}
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return this->scheduled_queue.MoveToBack(member->GetPriority(), member->GetActiveCore(),
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return this->scheduled_queue.MoveToBack(member->GetPriority(), member->GetActiveCore(),
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member);
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member);
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}
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}
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// First class fancy operations.
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// First class fancy operations.
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constexpr void ChangePriority(s32 prev_priority, bool is_running, Member* member) {
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constexpr void ChangePriority(s32 prev_priority, bool is_running, Member* member) {
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// This is for host (dummy) threads that we do not want to enter the priority queue.
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if (member->IsDummyThread()) {
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return;
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}
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ASSERT(IsValidPriority(prev_priority));
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ASSERT(IsValidPriority(prev_priority));
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// Remove the member from the queues.
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// Remove the member from the queues.
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@ -383,6 +409,11 @@ public:
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constexpr void ChangeAffinityMask(s32 prev_core, const AffinityMaskType& prev_affinity,
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constexpr void ChangeAffinityMask(s32 prev_core, const AffinityMaskType& prev_affinity,
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Member* member) {
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Member* member) {
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// This is for host (dummy) threads that we do not want to enter the priority queue.
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if (member->IsDummyThread()) {
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return;
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}
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// Get the new information.
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// Get the new information.
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const s32 priority = member->GetPriority();
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const s32 priority = member->GetPriority();
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const AffinityMaskType& new_affinity = member->GetAffinityMask();
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const AffinityMaskType& new_affinity = member->GetAffinityMask();
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@ -412,6 +443,11 @@ public:
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}
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}
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constexpr void ChangeCore(s32 prev_core, Member* member, bool to_front = false) {
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constexpr void ChangeCore(s32 prev_core, Member* member, bool to_front = false) {
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// This is for host (dummy) threads that we do not want to enter the priority queue.
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if (member->IsDummyThread()) {
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return;
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}
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// Get the new information.
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// Get the new information.
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const s32 new_core = member->GetActiveCore();
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const s32 new_core = member->GetActiveCore();
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const s32 priority = member->GetPriority();
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const s32 priority = member->GetPriority();
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@ -406,6 +406,9 @@ void KScheduler::EnableScheduling(KernelCore& kernel, u64 cores_needing_scheduli
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} else {
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} else {
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RescheduleCores(kernel, cores_needing_scheduling);
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RescheduleCores(kernel, cores_needing_scheduling);
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}
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}
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// Special case to ensure dummy threads that are waiting block.
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current_thread->IfDummyThreadTryWait();
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}
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}
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u64 KScheduler::UpdateHighestPriorityThreads(KernelCore& kernel) {
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u64 KScheduler::UpdateHighestPriorityThreads(KernelCore& kernel) {
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@ -739,6 +742,12 @@ void KScheduler::ScheduleImpl() {
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next_thread = idle_thread;
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next_thread = idle_thread;
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}
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}
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// We never want to schedule a dummy thread, as these are only used by host threads for locking.
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if (next_thread->GetThreadType() == ThreadType::Dummy) {
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ASSERT_MSG(false, "Dummy threads should never be scheduled!");
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next_thread = idle_thread;
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}
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// If we're not actually switching thread, there's nothing to do.
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// If we're not actually switching thread, there's nothing to do.
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if (next_thread == current_thread.load()) {
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if (next_thread == current_thread.load()) {
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previous_thread->EnableDispatch();
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previous_thread->EnableDispatch();
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@ -8,7 +8,6 @@
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#include "common/assert.h"
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "common/common_types.h"
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#include "common/logging/log.h"
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#include "common/logging/log.h"
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#include "common/scope_exit.h"
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#include "core/core_timing.h"
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#include "core/core_timing.h"
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#include "core/hle/ipc_helpers.h"
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#include "core/hle/ipc_helpers.h"
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#include "core/hle/kernel/hle_ipc.h"
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#include "core/hle/kernel/hle_ipc.h"
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@ -123,20 +122,10 @@ ResultCode KServerSession::QueueSyncRequest(KThread* thread, Core::Memory::Memor
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context->PopulateFromIncomingCommandBuffer(kernel.CurrentProcess()->GetHandleTable(), cmd_buf);
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context->PopulateFromIncomingCommandBuffer(kernel.CurrentProcess()->GetHandleTable(), cmd_buf);
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// In the event that something fails here, stub a result to prevent the game from crashing.
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// This is a work-around in the event that somehow we process a service request after the
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// session has been closed by the game. This has been observed to happen rarely in Pokemon
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// Sword/Shield and is likely a result of us using host threads/scheduling for services.
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// TODO(bunnei): Find a better solution here.
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auto error_guard = SCOPE_GUARD({ CompleteSyncRequest(*context); });
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// Ensure we have a session request handler
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// Ensure we have a session request handler
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if (manager->HasSessionRequestHandler(*context)) {
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if (manager->HasSessionRequestHandler(*context)) {
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if (auto strong_ptr = manager->GetServiceThread().lock()) {
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if (auto strong_ptr = manager->GetServiceThread().lock()) {
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strong_ptr->QueueSyncRequest(*parent, std::move(context));
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strong_ptr->QueueSyncRequest(*parent, std::move(context));
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// We succeeded.
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error_guard.Cancel();
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} else {
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} else {
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ASSERT_MSG(false, "strong_ptr is nullptr!");
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ASSERT_MSG(false, "strong_ptr is nullptr!");
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}
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}
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@ -171,13 +160,8 @@ ResultCode KServerSession::CompleteSyncRequest(HLERequestContext& context) {
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convert_to_domain = false;
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convert_to_domain = false;
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}
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}
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// Some service requests require the thread to block
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// The calling thread is waiting for this request to complete, so wake it up.
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{
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context.GetThread().EndWait(result);
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KScopedSchedulerLock lock(kernel);
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if (!context.IsThreadWaiting()) {
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context.GetThread().EndWait(result);
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}
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}
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return result;
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return result;
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}
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}
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@ -106,7 +106,7 @@ KThread::~KThread() = default;
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ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_stack_top, s32 prio,
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ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_stack_top, s32 prio,
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s32 virt_core, KProcess* owner, ThreadType type) {
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s32 virt_core, KProcess* owner, ThreadType type) {
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// Assert parameters are valid.
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// Assert parameters are valid.
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ASSERT((type == ThreadType::Main) ||
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ASSERT((type == ThreadType::Main) || (type == ThreadType::Dummy) ||
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(Svc::HighestThreadPriority <= prio && prio <= Svc::LowestThreadPriority));
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(Svc::HighestThreadPriority <= prio && prio <= Svc::LowestThreadPriority));
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ASSERT((owner != nullptr) || (type != ThreadType::User));
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ASSERT((owner != nullptr) || (type != ThreadType::User));
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ASSERT(0 <= virt_core && virt_core < static_cast<s32>(Common::BitSize<u64>()));
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ASSERT(0 <= virt_core && virt_core < static_cast<s32>(Common::BitSize<u64>()));
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@ -140,7 +140,7 @@ ResultCode KThread::Initialize(KThreadFunction func, uintptr_t arg, VAddr user_s
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UNREACHABLE_MSG("KThread::Initialize: Unknown ThreadType {}", static_cast<u32>(type));
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UNREACHABLE_MSG("KThread::Initialize: Unknown ThreadType {}", static_cast<u32>(type));
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break;
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break;
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}
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}
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thread_type_for_debugging = type;
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thread_type = type;
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// Set the ideal core ID and affinity mask.
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// Set the ideal core ID and affinity mask.
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virtual_ideal_core_id = virt_core;
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virtual_ideal_core_id = virt_core;
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@ -262,7 +262,7 @@ ResultCode KThread::InitializeThread(KThread* thread, KThreadFunction func, uint
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}
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}
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ResultCode KThread::InitializeDummyThread(KThread* thread) {
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ResultCode KThread::InitializeDummyThread(KThread* thread) {
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return thread->Initialize({}, {}, {}, DefaultThreadPriority, 3, {}, ThreadType::Dummy);
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return thread->Initialize({}, {}, {}, DummyThreadPriority, 3, {}, ThreadType::Dummy);
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}
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}
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ResultCode KThread::InitializeIdleThread(Core::System& system, KThread* thread, s32 virt_core) {
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ResultCode KThread::InitializeIdleThread(Core::System& system, KThread* thread, s32 virt_core) {
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@ -1075,12 +1075,46 @@ ResultCode KThread::Sleep(s64 timeout) {
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return ResultSuccess;
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return ResultSuccess;
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}
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}
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void KThread::IfDummyThreadTryWait() {
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if (!IsDummyThread()) {
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return;
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}
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if (GetState() != ThreadState::Waiting) {
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return;
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}
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// Block until we can grab the lock.
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KScopedSpinLock lk{dummy_wait_lock};
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}
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void KThread::IfDummyThreadBeginWait() {
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if (!IsDummyThread()) {
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return;
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}
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// Ensure the thread will block when IfDummyThreadTryWait is called.
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dummy_wait_lock.Lock();
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}
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void KThread::IfDummyThreadEndWait() {
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if (!IsDummyThread()) {
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return;
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}
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// Ensure the thread will no longer block.
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dummy_wait_lock.Unlock();
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}
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void KThread::BeginWait(KThreadQueue* queue) {
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void KThread::BeginWait(KThreadQueue* queue) {
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// Set our state as waiting.
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// Set our state as waiting.
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SetState(ThreadState::Waiting);
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SetState(ThreadState::Waiting);
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// Set our wait queue.
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// Set our wait queue.
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wait_queue = queue;
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wait_queue = queue;
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// Special case for dummy threads to ensure they block.
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IfDummyThreadBeginWait();
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}
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}
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void KThread::NotifyAvailable(KSynchronizationObject* signaled_object, ResultCode wait_result_) {
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void KThread::NotifyAvailable(KSynchronizationObject* signaled_object, ResultCode wait_result_) {
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@ -1099,7 +1133,16 @@ void KThread::EndWait(ResultCode wait_result_) {
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// If we're waiting, notify our queue that we're available.
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// If we're waiting, notify our queue that we're available.
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if (GetState() == ThreadState::Waiting) {
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if (GetState() == ThreadState::Waiting) {
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if (wait_queue == nullptr) {
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// This should never happen, but avoid a hard crash below to get this logged.
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ASSERT_MSG(false, "wait_queue is nullptr!");
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return;
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}
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wait_queue->EndWait(this, wait_result_);
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wait_queue->EndWait(this, wait_result_);
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// Special case for dummy threads to wakeup if necessary.
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IfDummyThreadEndWait();
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}
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}
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}
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}
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@ -112,6 +112,7 @@ private:
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public:
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public:
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static constexpr s32 DefaultThreadPriority = 44;
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static constexpr s32 DefaultThreadPriority = 44;
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static constexpr s32 IdleThreadPriority = Svc::LowestThreadPriority + 1;
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static constexpr s32 IdleThreadPriority = Svc::LowestThreadPriority + 1;
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static constexpr s32 DummyThreadPriority = Svc::LowestThreadPriority + 2;
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explicit KThread(KernelCore& kernel_);
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explicit KThread(KernelCore& kernel_);
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~KThread() override;
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~KThread() override;
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@ -553,8 +554,12 @@ public:
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return wait_reason_for_debugging;
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return wait_reason_for_debugging;
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}
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}
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[[nodiscard]] ThreadType GetThreadTypeForDebugging() const {
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[[nodiscard]] ThreadType GetThreadType() const {
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return thread_type_for_debugging;
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return thread_type;
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}
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[[nodiscard]] bool IsDummyThread() const {
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return GetThreadType() == ThreadType::Dummy;
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}
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}
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void SetWaitObjectsForDebugging(const std::span<KSynchronizationObject*>& objects) {
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void SetWaitObjectsForDebugging(const std::span<KSynchronizationObject*>& objects) {
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@ -631,6 +636,14 @@ public:
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return condvar_key;
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return condvar_key;
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}
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}
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// Dummy threads (used for HLE host threads) cannot wait based on the guest scheduler, and
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// therefore will not block on guest kernel synchronization primitives. These methods handle
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// blocking as needed.
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void IfDummyThreadTryWait();
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void IfDummyThreadBeginWait();
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void IfDummyThreadEndWait();
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private:
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private:
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static constexpr size_t PriorityInheritanceCountMax = 10;
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static constexpr size_t PriorityInheritanceCountMax = 10;
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union SyncObjectBuffer {
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union SyncObjectBuffer {
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@ -749,16 +762,17 @@ private:
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bool resource_limit_release_hint{};
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bool resource_limit_release_hint{};
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StackParameters stack_parameters{};
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StackParameters stack_parameters{};
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KSpinLock context_guard{};
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KSpinLock context_guard{};
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KSpinLock dummy_wait_lock{};
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// For emulation
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// For emulation
|
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std::shared_ptr<Common::Fiber> host_context{};
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std::shared_ptr<Common::Fiber> host_context{};
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bool is_single_core{};
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bool is_single_core{};
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ThreadType thread_type{};
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// For debugging
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// For debugging
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std::vector<KSynchronizationObject*> wait_objects_for_debugging;
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std::vector<KSynchronizationObject*> wait_objects_for_debugging;
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VAddr mutex_wait_address_for_debugging{};
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VAddr mutex_wait_address_for_debugging{};
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||||||
ThreadWaitReasonForDebugging wait_reason_for_debugging{};
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ThreadWaitReasonForDebugging wait_reason_for_debugging{};
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||||||
ThreadType thread_type_for_debugging{};
|
|
||||||
|
|
||||||
public:
|
public:
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using ConditionVariableThreadTreeType = ConditionVariableThreadTree;
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using ConditionVariableThreadTreeType = ConditionVariableThreadTree;
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@ -301,12 +301,10 @@ struct KernelCore::Impl {
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||||||
// Gets the dummy KThread for the caller, allocating a new one if this is the first time
|
// Gets the dummy KThread for the caller, allocating a new one if this is the first time
|
||||||
KThread* GetHostDummyThread() {
|
KThread* GetHostDummyThread() {
|
||||||
auto make_thread = [this]() {
|
auto make_thread = [this]() {
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||||||
std::lock_guard lk(dummy_thread_lock);
|
KThread* thread = KThread::Create(system.Kernel());
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||||||
auto& thread = dummy_threads.emplace_back(std::make_unique<KThread>(system.Kernel()));
|
ASSERT(KThread::InitializeDummyThread(thread).IsSuccess());
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||||||
KAutoObject::Create(thread.get());
|
|
||||||
ASSERT(KThread::InitializeDummyThread(thread.get()).IsSuccess());
|
|
||||||
thread->SetName(fmt::format("DummyThread:{}", GetHostThreadId()));
|
thread->SetName(fmt::format("DummyThread:{}", GetHostThreadId()));
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||||||
return thread.get();
|
return thread;
|
||||||
};
|
};
|
||||||
|
|
||||||
thread_local KThread* saved_thread = make_thread();
|
thread_local KThread* saved_thread = make_thread();
|
||||||
|
@ -731,7 +729,6 @@ struct KernelCore::Impl {
|
||||||
std::mutex server_sessions_lock;
|
std::mutex server_sessions_lock;
|
||||||
std::mutex registered_objects_lock;
|
std::mutex registered_objects_lock;
|
||||||
std::mutex registered_in_use_objects_lock;
|
std::mutex registered_in_use_objects_lock;
|
||||||
std::mutex dummy_thread_lock;
|
|
||||||
|
|
||||||
std::atomic<u32> next_object_id{0};
|
std::atomic<u32> next_object_id{0};
|
||||||
std::atomic<u64> next_kernel_process_id{KProcess::InitialKIPIDMin};
|
std::atomic<u64> next_kernel_process_id{KProcess::InitialKIPIDMin};
|
||||||
|
@ -788,9 +785,6 @@ struct KernelCore::Impl {
|
||||||
std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES> interrupts{};
|
std::array<Core::CPUInterruptHandler, Core::Hardware::NUM_CPU_CORES> interrupts{};
|
||||||
std::array<std::unique_ptr<Kernel::KScheduler>, Core::Hardware::NUM_CPU_CORES> schedulers{};
|
std::array<std::unique_ptr<Kernel::KScheduler>, Core::Hardware::NUM_CPU_CORES> schedulers{};
|
||||||
|
|
||||||
// Specifically tracked to be automatically destroyed with kernel
|
|
||||||
std::vector<std::unique_ptr<KThread>> dummy_threads;
|
|
||||||
|
|
||||||
bool is_multicore{};
|
bool is_multicore{};
|
||||||
std::atomic_bool is_shutting_down{};
|
std::atomic_bool is_shutting_down{};
|
||||||
bool is_phantom_mode_for_singlecore{};
|
bool is_phantom_mode_for_singlecore{};
|
||||||
|
|
|
@ -12,6 +12,7 @@
|
||||||
#include "common/scope_exit.h"
|
#include "common/scope_exit.h"
|
||||||
#include "common/thread.h"
|
#include "common/thread.h"
|
||||||
#include "core/hle/kernel/k_session.h"
|
#include "core/hle/kernel/k_session.h"
|
||||||
|
#include "core/hle/kernel/k_thread.h"
|
||||||
#include "core/hle/kernel/kernel.h"
|
#include "core/hle/kernel/kernel.h"
|
||||||
#include "core/hle/kernel/service_thread.h"
|
#include "core/hle/kernel/service_thread.h"
|
||||||
|
|
||||||
|
@ -50,6 +51,10 @@ ServiceThread::Impl::Impl(KernelCore& kernel, std::size_t num_threads, const std
|
||||||
|
|
||||||
kernel.RegisterHostThread();
|
kernel.RegisterHostThread();
|
||||||
|
|
||||||
|
// Ensure the dummy thread allocated for this host thread is closed on exit.
|
||||||
|
auto* dummy_thread = kernel.GetCurrentEmuThread();
|
||||||
|
SCOPE_EXIT({ dummy_thread->Close(); });
|
||||||
|
|
||||||
while (true) {
|
while (true) {
|
||||||
std::function<void()> task;
|
std::function<void()> task;
|
||||||
|
|
||||||
|
|
|
@ -95,7 +95,7 @@ std::vector<std::unique_ptr<WaitTreeThread>> WaitTreeItem::MakeThreadItemList(
|
||||||
std::size_t row = 0;
|
std::size_t row = 0;
|
||||||
auto add_threads = [&](const std::vector<Kernel::KThread*>& threads) {
|
auto add_threads = [&](const std::vector<Kernel::KThread*>& threads) {
|
||||||
for (std::size_t i = 0; i < threads.size(); ++i) {
|
for (std::size_t i = 0; i < threads.size(); ++i) {
|
||||||
if (threads[i]->GetThreadTypeForDebugging() == Kernel::ThreadType::User) {
|
if (threads[i]->GetThreadType() == Kernel::ThreadType::User) {
|
||||||
item_list.push_back(std::make_unique<WaitTreeThread>(*threads[i], system));
|
item_list.push_back(std::make_unique<WaitTreeThread>(*threads[i], system));
|
||||||
item_list.back()->row = row;
|
item_list.back()->row = row;
|
||||||
}
|
}
|
||||||
|
@ -153,7 +153,7 @@ QString WaitTreeCallstack::GetText() const {
|
||||||
std::vector<std::unique_ptr<WaitTreeItem>> WaitTreeCallstack::GetChildren() const {
|
std::vector<std::unique_ptr<WaitTreeItem>> WaitTreeCallstack::GetChildren() const {
|
||||||
std::vector<std::unique_ptr<WaitTreeItem>> list;
|
std::vector<std::unique_ptr<WaitTreeItem>> list;
|
||||||
|
|
||||||
if (thread.GetThreadTypeForDebugging() != Kernel::ThreadType::User) {
|
if (thread.GetThreadType() != Kernel::ThreadType::User) {
|
||||||
return list;
|
return list;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
Loading…
Reference in a new issue