kernel: Replace usage of boost::intrusive_ptr with std::shared_ptr for kernel objects. (#3154)

* kernel: Replace usage of boost::intrusive_ptr with std::shared_ptr for kernel objects.

- See https://github.com/citra-emu/citra/pull/4710 for details.

src/core/hle/kernel/hle_ipc.h

@@ -5,6 +5,7 @@
 #pragma once
 
 #include <array>
+#include <functional>
 #include <memory>
 #include <optional>
 #include <string>
@@ -60,20 +61,20 @@ public:
      * associated ServerSession alive for the duration of the connection.
      * @param server_session Owning pointer to the ServerSession associated with the connection.
      */
-    void ClientConnected(SharedPtr<ServerSession> server_session);
+    void ClientConnected(std::shared_ptr<ServerSession> server_session);
 
     /**
      * Signals that a client has just disconnected from this HLE handler and releases the
      * associated ServerSession.
      * @param server_session ServerSession associated with the connection.
      */
-    void ClientDisconnected(const SharedPtr<ServerSession>& server_session);
+    void ClientDisconnected(const std::shared_ptr<ServerSession>& server_session);
 
 protected:
     /// List of sessions that are connected to this handler.
     /// A ServerSession whose server endpoint is an HLE implementation is kept alive by this list
     /// for the duration of the connection.
-    std::vector<SharedPtr<ServerSession>> connected_sessions;
+    std::vector<std::shared_ptr<ServerSession>> connected_sessions;
 };
 
 /**
@@ -97,7 +98,8 @@ protected:
  */
 class HLERequestContext {
 public:
-    explicit HLERequestContext(SharedPtr<ServerSession> session, SharedPtr<Thread> thread);
+    explicit HLERequestContext(std::shared_ptr<ServerSession> session,
+                               std::shared_ptr<Thread> thread);
     ~HLERequestContext();
 
     /// Returns a pointer to the IPC command buffer for this request.
@@ -109,12 +111,12 @@ public:
      * Returns the session through which this request was made. This can be used as a map key to
      * access per-client data on services.
      */
-    const SharedPtr<Kernel::ServerSession>& Session() const {
+    const std::shared_ptr<Kernel::ServerSession>& Session() const {
         return server_session;
     }
 
-    using WakeupCallback = std::function<void(SharedPtr<Thread> thread, HLERequestContext& context,
-                                              ThreadWakeupReason reason)>;
+    using WakeupCallback = std::function<void(
+        std::shared_ptr<Thread> thread, HLERequestContext& context, ThreadWakeupReason reason)>;
 
     /**
      * Puts the specified guest thread to sleep until the returned event is signaled or until the
@@ -129,9 +131,9 @@ public:
      * created.
      * @returns Event that when signaled will resume the thread and call the callback function.
      */
-    SharedPtr<WritableEvent> SleepClientThread(const std::string& reason, u64 timeout,
-                                               WakeupCallback&& callback,
-                                               SharedPtr<WritableEvent> writable_event = nullptr);
+    std::shared_ptr<WritableEvent> SleepClientThread(
+        const std::string& reason, u64 timeout, WakeupCallback&& callback,
+        std::shared_ptr<WritableEvent> writable_event = nullptr);
 
     /// Populates this context with data from the requesting process/thread.
     ResultCode PopulateFromIncomingCommandBuffer(const HandleTable& handle_table,
@@ -209,20 +211,20 @@ public:
     std::size_t GetWriteBufferSize(int buffer_index = 0) const;
 
     template <typename T>
-    SharedPtr<T> GetCopyObject(std::size_t index) {
+    std::shared_ptr<T> GetCopyObject(std::size_t index) {
         return DynamicObjectCast<T>(copy_objects.at(index));
     }
 
     template <typename T>
-    SharedPtr<T> GetMoveObject(std::size_t index) {
+    std::shared_ptr<T> GetMoveObject(std::size_t index) {
         return DynamicObjectCast<T>(move_objects.at(index));
     }
 
-    void AddMoveObject(SharedPtr<Object> object) {
+    void AddMoveObject(std::shared_ptr<Object> object) {
         move_objects.emplace_back(std::move(object));
     }
 
-    void AddCopyObject(SharedPtr<Object> object) {
+    void AddCopyObject(std::shared_ptr<Object> object) {
         copy_objects.emplace_back(std::move(object));
     }
 
@@ -266,11 +268,11 @@ private:
     void ParseCommandBuffer(const HandleTable& handle_table, u32_le* src_cmdbuf, bool incoming);
 
     std::array<u32, IPC::COMMAND_BUFFER_LENGTH> cmd_buf;
-    SharedPtr<Kernel::ServerSession> server_session;
-    SharedPtr<Thread> thread;
+    std::shared_ptr<Kernel::ServerSession> server_session;
+    std::shared_ptr<Thread> thread;
     // TODO(yuriks): Check common usage of this and optimize size accordingly
-    boost::container::small_vector<SharedPtr<Object>, 8> move_objects;
-    boost::container::small_vector<SharedPtr<Object>, 8> copy_objects;
+    boost::container::small_vector<std::shared_ptr<Object>, 8> move_objects;
+    boost::container::small_vector<std::shared_ptr<Object>, 8> copy_objects;
     boost::container::small_vector<std::shared_ptr<SessionRequestHandler>, 8> domain_objects;
 
     std::optional<IPC::CommandHeader> command_header;