Merge pull request #12299 from liamwhite/light-ipc

kernel: implement light IPC

1 files changed, 86 insertions, 0 deletions

diff --git a/src/core/hle/kernel/k_light_session.h b/src/core/hle/kernel/k_light_session.h
new file mode 100644
index 000000000..f78d8e689
--- /dev/null
+++ b/src/core/hle/kernel/k_light_session.h
@@ -0,0 +1,86 @@
+// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include "core/hle/kernel/k_light_client_session.h"
+#include "core/hle/kernel/k_light_server_session.h"
+#include "core/hle/kernel/slab_helpers.h"
+#include "core/hle/result.h"
+
+namespace Kernel {
+
+class KClientPort;
+class KProcess;
+
+// TODO: SupportDynamicExpansion for SlabHeap
+class KLightSession final
+    : public KAutoObjectWithSlabHeapAndContainer<KLightSession, KAutoObjectWithList> {
+    KERNEL_AUTOOBJECT_TRAITS(KLightSession, KAutoObject);
+
+private:
+    enum class State : u8 {
+        Invalid = 0,
+        Normal = 1,
+        ClientClosed = 2,
+        ServerClosed = 3,
+    };
+
+public:
+    static constexpr size_t DataSize = sizeof(u32) * 7;
+    static constexpr u32 ReplyFlag = (1U << 31);
+
+private:
+    KLightServerSession m_server;
+    KLightClientSession m_client;
+    State m_state{State::Invalid};
+    KClientPort* m_port{};
+    uintptr_t m_name{};
+    KProcess* m_process{};
+    bool m_initialized{};
+
+public:
+    explicit KLightSession(KernelCore& kernel);
+    ~KLightSession();
+
+    void Initialize(KClientPort* client_port, uintptr_t name);
+    void Finalize() override;
+
+    bool IsInitialized() const override {
+        return m_initialized;
+    }
+    uintptr_t GetPostDestroyArgument() const override {
+        return reinterpret_cast<uintptr_t>(m_process);
+    }
+
+    static void PostDestroy(uintptr_t arg);
+
+    void OnServerClosed();
+    void OnClientClosed();
+
+    bool IsServerClosed() const {
+        return m_state != State::Normal;
+    }
+    bool IsClientClosed() const {
+        return m_state != State::Normal;
+    }
+
+    Result OnRequest(KThread* request_thread) {
+        R_RETURN(m_server.OnRequest(request_thread));
+    }
+
+    KLightClientSession& GetClientSession() {
+        return m_client;
+    }
+    KLightServerSession& GetServerSession() {
+        return m_server;
+    }
+    const KLightClientSession& GetClientSession() const {
+        return m_client;
+    }
+    const KLightServerSession& GetServerSession() const {
+        return m_server;
+    }
+};
+
+} // namespace Kernel