hle: kernel: Track and release server sessions, and protect methods with locks.

src/core/hle/kernel/hle_ipc.cpp

@@ -58,6 +58,9 @@ bool SessionRequestManager::HasSessionRequestHandler(const HLERequestContext& co
 
 void SessionRequestHandler::ClientConnected(KServerSession* session) {
     session->ClientConnected(shared_from_this());
+
+    // Ensure our server session is tracked globally.
+    kernel.RegisterServerSession(session);
 }
 
 void SessionRequestHandler::ClientDisconnected(KServerSession* session) {

src/core/hle/kernel/k_server_session.cpp

@@ -28,7 +28,10 @@ namespace Kernel {
 
 KServerSession::KServerSession(KernelCore& kernel_) : KSynchronizationObject{kernel_} {}
 
-KServerSession::~KServerSession() {}
+KServerSession::~KServerSession() {
+    // Ensure that the global list tracking server sessions does not hold on to a reference.
+    kernel.UnregisterServerSession(this);
+}
 
 void KServerSession::Initialize(KSession* parent_session_, std::string&& name_,
                                 std::shared_ptr<SessionRequestManager> manager_) {

src/core/hle/kernel/kernel.cpp

@@ -91,15 +91,39 @@ struct KernelCore::Impl {
     }
 
     void Shutdown() {
+        // Shutdown all processes.
         if (current_process) {
             current_process->Finalize();
             current_process->Close();
             current_process = nullptr;
         }
-
         process_list.clear();
 
-        // Ensures all service threads gracefully shutdown
+        // Close all open server ports.
+        std::unordered_set<KServerPort*> server_ports_;
+        {
+            std::lock_guard lk(server_ports_lock);
+            server_ports_ = server_ports;
+            server_ports.clear();
+        }
+        for (auto* server_port : server_ports_) {
+            server_port->Close();
+        }
+        // Close all open server sessions.
+        std::unordered_set<KServerSession*> server_sessions_;
+        {
+            std::lock_guard lk(server_sessions_lock);
+            server_sessions_ = server_sessions;
+            server_sessions.clear();
+        }
+        for (auto* server_session : server_sessions_) {
+            server_session->Close();
+        }
+
+        // Ensure that the object list container is finalized and properly shutdown.
+        object_list_container.Finalize();
+
+        // Ensures all service threads gracefully shutdown.
         service_threads.clear();
 
         next_object_id = 0;
@@ -147,12 +171,15 @@ struct KernelCore::Impl {
         next_host_thread_id = Core::Hardware::NUM_CPU_CORES;
 
         // Track kernel objects that were not freed on shutdown
+        {
+            std::lock_guard lk(registered_objects_lock);
             if (registered_objects.size()) {
                 LOG_WARNING(Kernel, "{} kernel objects were dangling on shutdown!",
                             registered_objects.size());
                 registered_objects.clear();
             }
         }
+    }
 
     void InitializePhysicalCores() {
         exclusive_monitor =
@@ -640,6 +667,21 @@ struct KernelCore::Impl {
             user_slab_heap_size);
     }
 
+    KClientPort* CreateNamedServicePort(std::string name) {
+        auto search = service_interface_factory.find(name);
+        if (search == service_interface_factory.end()) {
+            UNIMPLEMENTED();
+            return {};
+        }
+
+        KClientPort* port = &search->second(system.ServiceManager(), system);
+        {
+            std::lock_guard lk(server_ports_lock);
+            server_ports.insert(&port->GetParent()->GetServerPort());
+        }
+        return port;
+    }
+
     std::atomic<u32> next_object_id{0};
     std::atomic<u64> next_kernel_process_id{KProcess::InitialKIPIDMin};
     std::atomic<u64> next_user_process_id{KProcess::ProcessIDMin};
@@ -666,7 +708,12 @@ struct KernelCore::Impl {
     /// the ConnectToPort SVC.
     std::unordered_map<std::string, ServiceInterfaceFactory> service_interface_factory;
     NamedPortTable named_ports;
+    std::unordered_set<KServerPort*> server_ports;
+    std::unordered_set<KServerSession*> server_sessions;
     std::unordered_set<KAutoObject*> registered_objects;
+    std::mutex server_ports_lock;
+    std::mutex server_sessions_lock;
+    std::mutex registered_objects_lock;
 
     std::unique_ptr<Core::ExclusiveMonitor> exclusive_monitor;
     std::vector<Kernel::PhysicalCore> cores;
@@ -855,19 +902,26 @@ void KernelCore::RegisterNamedService(std::string name, ServiceInterfaceFactory&
 }
 
 KClientPort* KernelCore::CreateNamedServicePort(std::string name) {
-    auto search = impl->service_interface_factory.find(name);
-    if (search == impl->service_interface_factory.end()) {
-        UNIMPLEMENTED();
-        return {};
+    return impl->CreateNamedServicePort(std::move(name));
 }
-    return &search->second(impl->system.ServiceManager(), impl->system);
+
+void KernelCore::RegisterServerSession(KServerSession* server_session) {
+    std::lock_guard lk(impl->server_sessions_lock);
+    impl->server_sessions.insert(server_session);
+}
+
+void KernelCore::UnregisterServerSession(KServerSession* server_session) {
+    std::lock_guard lk(impl->server_sessions_lock);
+    impl->server_sessions.erase(server_session);
 }
 
 void KernelCore::RegisterKernelObject(KAutoObject* object) {
+    std::lock_guard lk(impl->registered_objects_lock);
     impl->registered_objects.insert(object);
 }
 
 void KernelCore::UnregisterKernelObject(KAutoObject* object) {
+    std::lock_guard lk(impl->registered_objects_lock);
     impl->registered_objects.erase(object);
 }
 

src/core/hle/kernel/kernel.h

@@ -45,6 +45,7 @@ class KPort;
 class KProcess;
 class KResourceLimit;
 class KScheduler;
+class KServerSession;
 class KSession;
 class KSharedMemory;
 class KThread;
@@ -185,6 +186,14 @@ public:
     /// Opens a port to a service previously registered with RegisterNamedService.
     KClientPort* CreateNamedServicePort(std::string name);
 
+    /// Registers a server session with the gobal emulation state, to be freed on shutdown. This is
+    /// necessary because we do not emulate processes for HLE sessions.
+    void RegisterServerSession(KServerSession* server_session);
+
+    /// Unregisters a server session previously registered with RegisterServerSession when it was
+    /// destroyed during the current emulation session.
+    void UnregisterServerSession(KServerSession* server_session);
+
     /// Registers all kernel objects with the global emulation state, this is purely for tracking
     /// leaks after emulation has been shutdown.
     void RegisterKernelObject(KAutoObject* object);