core: hle: kernel: object: Implement Finalize() virtual method.

src/core/hle/kernel/client_port.h

@@ -51,6 +51,8 @@ public:
      */
     void ConnectionClosed();
 
+    void Finalize() override {}
+
 private:
     std::shared_ptr<ServerPort> server_port; ///< ServerPort associated with this client port.
     u32 max_sessions = 0;    ///< Maximum number of simultaneous sessions the port can have

src/core/hle/kernel/client_session.h

@@ -51,6 +51,8 @@ public:
 
     bool IsSignaled() const override;
 
+    void Finalize() override {}
+
 private:
     static ResultVal<std::shared_ptr<ClientSession>> Create(KernelCore& kernel,
                                                             std::shared_ptr<Session> parent,

src/core/hle/kernel/handle_table.cpp

@@ -89,6 +89,10 @@ ResultCode HandleTable::Close(Handle handle) {
 
     const u16 slot = GetSlot(handle);
 
+    if (objects[slot].use_count() == 1) {
+        objects[slot]->Finalize();
+    }
+
     objects[slot] = nullptr;
 
     generations[slot] = next_free_slot;

src/core/hle/kernel/object.h

@@ -61,6 +61,8 @@ public:
      */
     bool IsWaitable() const;
 
+    virtual void Finalize() = 0;
+
 protected:
     /// The kernel instance this object was created under.
     KernelCore& kernel;

src/core/hle/kernel/process.h

@@ -308,6 +308,8 @@ public:
 
     bool IsSignaled() const override;
 
+    void Finalize() override {}
+
     ///////////////////////////////////////////////////////////////////////////////////////////////
     // Thread-local storage management
 

src/core/hle/kernel/readable_event.h

@@ -47,6 +47,8 @@ public:
 
     bool IsSignaled() const override;
 
+    void Finalize() override {}
+
 private:
     explicit ReadableEvent(KernelCore& kernel);
 

src/core/hle/kernel/resource_limit.h

@@ -85,6 +85,8 @@ public:
      */
     ResultCode SetLimitValue(ResourceType resource, s64 value);
 
+    void Finalize() override {}
+
 private:
     // TODO(Subv): Increment resource limit current values in their respective Kernel::T::Create
     // functions

src/core/hle/kernel/server_port.h

@@ -81,6 +81,8 @@ public:
 
     bool IsSignaled() const override;
 
+    void Finalize() override {}
+
 private:
     /// ServerSessions waiting to be accepted by the port
     std::vector<std::shared_ptr<ServerSession>> pending_sessions;

src/core/hle/kernel/server_session.h

@@ -126,6 +126,8 @@ public:
 
     bool IsSignaled() const override;
 
+    void Finalize() override {}
+
 private:
     /// Queues a sync request from the emulated application.
     ResultCode QueueSyncRequest(std::shared_ptr<KThread> thread, Core::Memory::Memory& memory);

src/core/hle/kernel/session.h

@@ -39,6 +39,8 @@ public:
 
     bool IsSignaled() const override;
 
+    void Finalize() override {}
+
     std::shared_ptr<ClientSession> Client() {
         if (auto result{client.lock()}) {
             return result;

src/core/hle/kernel/shared_memory.h

@@ -71,6 +71,8 @@ public:
         return device_memory.GetPointer(physical_address + offset);
     }
 
+    void Finalize() override {}
+
 private:
     Core::DeviceMemory& device_memory;
     Process* owner_process{};

src/core/hle/kernel/transfer_memory.h

@@ -72,6 +72,8 @@ public:
     /// is closed.
     ResultCode Reset();
 
+    void Finalize() override {}
+
 private:
     /// The base address for the memory managed by this instance.
     VAddr base_address{};

src/core/hle/kernel/writable_event.cpp

@@ -38,8 +38,4 @@ void WritableEvent::Clear() {
     readable->Clear();
 }
 
-bool WritableEvent::IsSignaled() const {
-    return readable->IsSignaled();
-}
-
 } // namespace Kernel

src/core/hle/kernel/writable_event.h

@@ -46,7 +46,8 @@ public:
 
     void Signal();
     void Clear();
-    bool IsSignaled() const;
+
+    void Finalize() override {}
 
 private:
     explicit WritableEvent(KernelCore& kernel);