service: refactor server architecture

Converts services to have their own processes

src/core/hle/service/server_manager.h

@@ -0,0 +1,75 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <atomic>
+#include <functional>
+#include <map>
+#include <mutex>
+#include <string_view>
+#include <vector>
+
+#include "common/polyfill_thread.h"
+#include "core/hle/result.h"
+#include "core/hle/service/mutex.h"
+
+namespace Core {
+class System;
+}
+
+namespace Kernel {
+class KEvent;
+class KServerPort;
+class KServerSession;
+class KSynchronizationObject;
+class SessionRequestHandler;
+class SessionRequestManager;
+} // namespace Kernel
+
+namespace Service {
+
+class ServerManager {
+public:
+    explicit ServerManager(Core::System& system);
+    ~ServerManager();
+
+    Result RegisterSession(Kernel::KServerSession* session,
+                           std::shared_ptr<Kernel::SessionRequestManager> manager);
+    Result RegisterNamedService(const std::string& service_name,
+                                std::shared_ptr<Kernel::SessionRequestHandler>&& handler,
+                                u32 max_sessions = 64);
+    Result ManageNamedPort(const std::string& service_name,
+                           std::shared_ptr<Kernel::SessionRequestHandler>&& handler,
+                           u32 max_sessions = 64);
+
+    Result LoopProcess();
+    void StartAdditionalHostThreads(const char* name, size_t num_threads);
+
+    static void RunServer(std::unique_ptr<ServerManager>&& server);
+
+private:
+    Result LoopProcessImpl();
+    Result WaitAndProcessImpl();
+    Result OnPortEvent(Kernel::KServerPort* port,
+                       std::shared_ptr<Kernel::SessionRequestHandler>&& handler);
+    Result OnSessionEvent(Kernel::KServerSession* session,
+                          std::shared_ptr<Kernel::SessionRequestManager>&& manager);
+
+private:
+    Core::System& m_system;
+    Mutex m_serve_mutex;
+    std::mutex m_list_mutex;
+
+    // Guest state tracking
+    std::map<Kernel::KServerPort*, std::shared_ptr<Kernel::SessionRequestHandler>> m_ports{};
+    std::map<Kernel::KServerSession*, std::shared_ptr<Kernel::SessionRequestManager>> m_sessions{};
+    Kernel::KEvent* m_event{};
+
+    // Host state tracking
+    std::atomic<bool> m_stopped{};
+    std::vector<std::jthread> m_threads{};
+    std::stop_source m_stop_source{};
+};
+
+} // namespace Service