Use std::move where appropriate.

src/core/CMakeLists.txt

@@ -179,6 +179,7 @@ set(HEADERS
             hle/config_mem.h
             hle/function_wrappers.h
             hle/hle.h
+            hle/ipc.h
             hle/applets/applet.h
             hle/applets/erreula.h
             hle/applets/mii_selector.h

src/core/hle/ipc.h

@@ -0,0 +1,162 @@
+// Copyright 2016 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_types.h"
+#include "core/hle/kernel/thread.h"
+#include "core/memory.h"
+
+namespace Kernel {
+class ServerSession;
+
+// TODO(Subv): Move these declarations out of here
+static const int kCommandHeaderOffset = 0x80; ///< Offset into command buffer of header
+
+/**
+ * Returns a pointer to the command buffer in the current thread's TLS
+ * TODO(Subv): This is not entirely correct, the command buffer should be copied from
+ * the thread's TLS to an intermediate buffer in kernel memory, and then copied again to
+ * the service handler process' memory.
+ * @param offset Optional offset into command buffer
+ * @return Pointer to command buffer
+ */
+inline u32* GetCommandBuffer(const int offset = 0) {
+    return (u32*)Memory::GetPointer(GetCurrentThread()->GetTLSAddress() + kCommandHeaderOffset +
+                                    offset);
+}
+}
+
+namespace IPC {
+
+enum DescriptorType : u32 {
+    // Buffer related desciptors types (mask : 0x0F)
+    StaticBuffer = 0x02,
+    PXIBuffer = 0x04,
+    MappedBuffer = 0x08,
+    // Handle related descriptors types (mask : 0x30, but need to check for buffer related
+    // descriptors first )
+    CopyHandle = 0x00,
+    MoveHandle = 0x10,
+    CallingPid = 0x20,
+};
+
+/**
+ * @brief Creates a command header to be used for IPC
+ * @param command_id            ID of the command to create a header for.
+ * @param normal_params         Size of the normal parameters in words. Up to 63.
+ * @param translate_params_size Size of the translate parameters in words. Up to 63.
+ * @return The created IPC header.
+ *
+ * Normal parameters are sent directly to the process while the translate parameters might go
+ * through modifications and checks by the kernel.
+ * The translate parameters are described by headers generated with the IPC::*Desc functions.
+ *
+ * @note While #normal_params is equivalent to the number of normal parameters,
+ * #translate_params_size includes the size occupied by the translate parameters headers.
+ */
+constexpr u32 MakeHeader(u16 command_id, unsigned int normal_params,
+                         unsigned int translate_params_size) {
+    return (u32(command_id) << 16) | ((u32(normal_params) & 0x3F) << 6) |
+           (u32(translate_params_size) & 0x3F);
+}
+
+union Header {
+    u32 raw;
+    BitField<0, 6, u32> translate_params_size;
+    BitField<6, 6, u32> normal_params;
+    BitField<16, 16, u32> command_id;
+};
+
+inline Header ParseHeader(u32 header) {
+    return {header};
+}
+
+constexpr u32 MoveHandleDesc(u32 num_handles = 1) {
+    return MoveHandle | ((num_handles - 1) << 26);
+}
+
+constexpr u32 CopyHandleDesc(u32 num_handles = 1) {
+    return CopyHandle | ((num_handles - 1) << 26);
+}
+
+constexpr u32 CallingPidDesc() {
+    return CallingPid;
+}
+
+constexpr bool isHandleDescriptor(u32 descriptor) {
+    return (descriptor & 0xF) == 0x0;
+}
+
+constexpr u32 HandleNumberFromDesc(u32 handle_descriptor) {
+    return (handle_descriptor >> 26) + 1;
+}
+
+constexpr u32 StaticBufferDesc(u32 size, u8 buffer_id) {
+    return StaticBuffer | (size << 14) | ((buffer_id & 0xF) << 10);
+}
+
+union StaticBufferDescInfo {
+    u32 raw;
+    BitField<10, 4, u32> buffer_id;
+    BitField<14, 18, u32> size;
+};
+
+inline StaticBufferDescInfo ParseStaticBufferDesc(const u32 desc) {
+    return {desc};
+}
+
+/**
+ * @brief Creates a header describing a buffer to be sent over PXI.
+ * @param size         Size of the buffer. Max 0x00FFFFFF.
+ * @param buffer_id    The Id of the buffer. Max 0xF.
+ * @param is_read_only true if the buffer is read-only. If false, the buffer is considered to have
+ * read-write access.
+ * @return The created PXI buffer header.
+ *
+ * The next value is a phys-address of a table located in the BASE memregion.
+ */
+inline u32 PXIBufferDesc(u32 size, unsigned buffer_id, bool is_read_only) {
+    u32 type = PXIBuffer;
+    if (is_read_only)
+        type |= 0x2;
+    return type | (size << 8) | ((buffer_id & 0xF) << 4);
+}
+
+enum MappedBufferPermissions {
+    R = 1,
+    W = 2,
+    RW = R | W,
+};
+
+constexpr u32 MappedBufferDesc(u32 size, MappedBufferPermissions perms) {
+    return MappedBuffer | (size << 4) | (u32(perms) << 1);
+}
+
+union MappedBufferDescInfo {
+    u32 raw;
+    BitField<4, 28, u32> size;
+    BitField<1, 2, MappedBufferPermissions> perms;
+};
+
+inline MappedBufferDescInfo ParseMappedBufferDesc(const u32 desc) {
+    return{ desc };
+}
+
+inline DescriptorType GetDescriptorType(u32 descriptor) {
+    // Note: Those checks must be done in this order
+    if (isHandleDescriptor(descriptor))
+        return (DescriptorType)(descriptor & 0x30);
+
+    // handle the fact that the following descriptors can have rights
+    if (descriptor & MappedBuffer)
+        return MappedBuffer;
+
+    if (descriptor & PXIBuffer)
+        return PXIBuffer;
+
+    return StaticBuffer;
+}
+
+} // namespace IPC

src/core/hle/kernel/client_port.cpp

@@ -15,6 +15,9 @@ ClientPort::ClientPort() {}
 ClientPort::~ClientPort() {}
 
 ResultVal<SharedPtr<ClientSession>> ClientPort::Connect() {
+    // Note: Threads do not wait for the server endpoint to call
+    // AcceptSession before returning from this call.
+
     if (active_sessions >= max_sessions) {
         return ResultCode(ErrorDescription::MaxConnectionsReached,
                           ErrorModule::OS, ErrorSummary::WouldBlock,
@@ -27,7 +30,7 @@ ResultVal<SharedPtr<ClientSession>> ClientPort::Connect() {
     auto client_session = std::get<SharedPtr<ClientSession>>(sessions);
     auto server_session = std::get<SharedPtr<ServerSession>>(sessions);
 
-    server_port->pending_sessions.push_back(server_session);
+    server_port->pending_sessions.push_back(std::move(server_session));
 
     // Wake the threads waiting on the ServerPort
     server_port->WakeupAllWaitingThreads();

src/core/hle/kernel/client_session.cpp

@@ -16,7 +16,7 @@ ResultVal<SharedPtr<ClientSession>> ClientSession::Create(SharedPtr<ServerSessio
     SharedPtr<ClientSession> client_session(new ClientSession);
 
     client_session->name = std::move(name);
-    client_session->server_session = server_session;
+    client_session->server_session = std::move(server_session);
     return MakeResult<SharedPtr<ClientSession>>(std::move(client_session));
 }
 

src/core/hle/kernel/server_port.cpp

@@ -30,7 +30,7 @@ std::tuple<SharedPtr<ServerPort>, SharedPtr<ClientPort>> ServerPort::CreatePortP
     SharedPtr<ClientPort> client_port(new ClientPort);
 
     server_port->name = name + "_Server";
-    server_port->hle_handler = hle_handler;
+    server_port->hle_handler = std::move(hle_handler);
     client_port->name = name + "_Client";
     client_port->server_port = server_port;
     client_port->max_sessions = max_sessions;

src/core/hle/kernel/server_session.cpp

@@ -18,7 +18,7 @@ ResultVal<SharedPtr<ServerSession>> ServerSession::Create(std::string name, std:
 
     server_session->name = std::move(name);
     server_session->signaled = false;
-    server_session->hle_handler = hle_handler;
+    server_session->hle_handler = std::move(hle_handler);
 
     return MakeResult<SharedPtr<ServerSession>>(std::move(server_session));
 }
@@ -46,8 +46,9 @@ ResultCode ServerSession::HandleSyncRequest() {
     return RESULT_SUCCESS;
 }
 
-std::tuple<SharedPtr<ServerSession>, SharedPtr<ClientSession>> ServerSession::CreateSessionPair(const std::string& name, std::shared_ptr<Service::SessionRequestHandler> hle_handler) {
+ServerSession::SessionPair ServerSession::CreateSessionPair(const std::string& name,
-    auto server_session = ServerSession::Create(name + "_Server", hle_handler).MoveFrom();
+                                                            std::shared_ptr<Service::SessionRequestHandler> hle_handler) {
+    auto server_session = ServerSession::Create(name + "_Server", std::move(hle_handler)).MoveFrom();
     auto client_session = ClientSession::Create(server_session, name + "_Client").MoveFrom();
 
     return std::make_tuple(std::move(server_session), std::move(client_session));

src/core/hle/kernel/server_session.h

@@ -40,12 +40,14 @@ public:
         return HANDLE_TYPE;
     }
 
+    using SessionPair = std::tuple<SharedPtr<ServerSession>, SharedPtr<ClientSession>>;
+
     /**
      * Creates a pair of ServerSession and an associated ClientSession.
      * @param name Optional name of the ports
      * @return The created session tuple
      */
-    static std::tuple<SharedPtr<ServerSession>, SharedPtr<ClientSession>> CreateSessionPair(const std::string& name = "Unknown", std::shared_ptr<Service::SessionRequestHandler> hle_handler = nullptr);
+    static SessionPair CreateSessionPair(const std::string& name = "Unknown", std::shared_ptr<Service::SessionRequestHandler> hle_handler = nullptr);
 
     /**
      * Handle a sync request from the emulated application.

src/core/hle/service/fs/archive.h

@@ -41,7 +41,7 @@ enum class MediaType : u32 { NAND = 0, SDMC = 1 };
 
 typedef u64 ArchiveHandle;
 
-class File : public SessionRequestHandler, public std::enable_shared_from_this<File> {
+class File final : public SessionRequestHandler, public std::enable_shared_from_this<File> {
 public:
     File(std::unique_ptr<FileSys::FileBackend>&& backend, const FileSys::Path& path);
     ~File();
@@ -58,7 +58,7 @@ protected:
     void HandleSyncRequestImpl(Kernel::SharedPtr<Kernel::ServerSession> server_session) override;
 };
 
-class Directory : public SessionRequestHandler {
+class Directory final : public SessionRequestHandler {
 public:
     Directory(std::unique_ptr<FileSys::DirectoryBackend>&& backend, const FileSys::Path& path);
     ~Directory();

src/core/hle/service/service.cpp

@@ -84,6 +84,9 @@ ResultCode SessionRequestHandler::TranslateRequest(Kernel::SharedPtr<Kernel::Ser
     return RESULT_SUCCESS;
 }
 
+Interface::~Interface() = default;
+Interface::Interface(u32 max_sessions) : max_sessions(max_sessions) { }
+
 void Interface::HandleSyncRequestImpl(Kernel::SharedPtr<Kernel::ServerSession> server_session) {
     // TODO(Subv): Make use of the server_session in the HLE service handlers to distinguish which session triggered each command.
 
@@ -123,14 +126,14 @@ static void AddNamedPort(Interface* interface_) {
     auto ports = Kernel::ServerPort::CreatePortPair(interface_->GetMaxSessions(), interface_->GetPortName(),
                                                     std::shared_ptr<Interface>(interface_));
     auto client_port = std::get<Kernel::SharedPtr<Kernel::ClientPort>>(ports);
-    g_kernel_named_ports.emplace(interface_->GetPortName(), client_port);
+    g_kernel_named_ports.emplace(interface_->GetPortName(), std::move(client_port));
 }
 
 void AddService(Interface* interface_) {
     auto ports = Kernel::ServerPort::CreatePortPair(interface_->GetMaxSessions(), interface_->GetPortName(),
                                                     std::shared_ptr<Interface>(interface_));
     auto client_port = std::get<Kernel::SharedPtr<Kernel::ClientPort>>(ports);
-    g_srv_services.emplace(interface_->GetPortName(), client_port);
+    g_srv_services.emplace(interface_->GetPortName(), std::move(client_port));
 }
 
 /// Initialize ServiceManager

src/core/hle/service/service.h

@@ -9,165 +9,12 @@
 #include <unordered_map>
 #include <boost/container/flat_map.hpp>
 #include "common/common_types.h"
+#include "core/hle/ipc.h"
 #include "core/hle/kernel/client_port.h"
 #include "core/hle/kernel/thread.h"
 #include "core/hle/result.h"
 #include "core/memory.h"
 
-namespace Kernel {
-class ServerSession;
-
-// TODO(Subv): Move these declarations out of here
-static const int kCommandHeaderOffset = 0x80; ///< Offset into command buffer of header
-
-/**
- * Returns a pointer to the command buffer in the current thread's TLS
- * TODO(Subv): This is not entirely correct, the command buffer should be copied from
- * the thread's TLS to an intermediate buffer in kernel memory, and then copied again to
- * the service handler process' memory.
- * @param offset Optional offset into command buffer
- * @return Pointer to command buffer
- */
-inline u32* GetCommandBuffer(const int offset = 0) {
-    return (u32*)Memory::GetPointer(GetCurrentThread()->GetTLSAddress() + kCommandHeaderOffset +
-                                    offset);
-}
-}
-
-// TODO(Subv): Move this namespace out of here
-namespace IPC {
-
-enum DescriptorType : u32 {
-    // Buffer related desciptors types (mask : 0x0F)
-    StaticBuffer = 0x02,
-    PXIBuffer = 0x04,
-    MappedBuffer = 0x08,
-    // Handle related descriptors types (mask : 0x30, but need to check for buffer related
-    // descriptors first )
-    CopyHandle = 0x00,
-    MoveHandle = 0x10,
-    CallingPid = 0x20,
-};
-
-/**
- * @brief Creates a command header to be used for IPC
- * @param command_id            ID of the command to create a header for.
- * @param normal_params         Size of the normal parameters in words. Up to 63.
- * @param translate_params_size Size of the translate parameters in words. Up to 63.
- * @return The created IPC header.
- *
- * Normal parameters are sent directly to the process while the translate parameters might go
- * through modifications and checks by the kernel.
- * The translate parameters are described by headers generated with the IPC::*Desc functions.
- *
- * @note While #normal_params is equivalent to the number of normal parameters,
- * #translate_params_size includes the size occupied by the translate parameters headers.
- */
-constexpr u32 MakeHeader(u16 command_id, unsigned int normal_params,
-                         unsigned int translate_params_size) {
-    return (u32(command_id) << 16) | ((u32(normal_params) & 0x3F) << 6) |
-           (u32(translate_params_size) & 0x3F);
-}
-
-union Header {
-    u32 raw;
-    BitField<0, 6, u32> translate_params_size;
-    BitField<6, 6, u32> normal_params;
-    BitField<16, 16, u32> command_id;
-};
-
-inline Header ParseHeader(u32 header) {
-    return {header};
-}
-
-constexpr u32 MoveHandleDesc(u32 num_handles = 1) {
-    return MoveHandle | ((num_handles - 1) << 26);
-}
-
-constexpr u32 CopyHandleDesc(u32 num_handles = 1) {
-    return CopyHandle | ((num_handles - 1) << 26);
-}
-
-constexpr u32 CallingPidDesc() {
-    return CallingPid;
-}
-
-constexpr bool isHandleDescriptor(u32 descriptor) {
-    return (descriptor & 0xF) == 0x0;
-}
-
-constexpr u32 HandleNumberFromDesc(u32 handle_descriptor) {
-    return (handle_descriptor >> 26) + 1;
-}
-
-constexpr u32 StaticBufferDesc(u32 size, u8 buffer_id) {
-    return StaticBuffer | (size << 14) | ((buffer_id & 0xF) << 10);
-}
-
-union StaticBufferDescInfo {
-    u32 raw;
-    BitField<10, 4, u32> buffer_id;
-    BitField<14, 18, u32> size;
-};
-
-inline StaticBufferDescInfo ParseStaticBufferDesc(const u32 desc) {
-    return {desc};
-}
-
-/**
- * @brief Creates a header describing a buffer to be sent over PXI.
- * @param size         Size of the buffer. Max 0x00FFFFFF.
- * @param buffer_id    The Id of the buffer. Max 0xF.
- * @param is_read_only true if the buffer is read-only. If false, the buffer is considered to have
- * read-write access.
- * @return The created PXI buffer header.
- *
- * The next value is a phys-address of a table located in the BASE memregion.
- */
-inline u32 PXIBufferDesc(u32 size, unsigned buffer_id, bool is_read_only) {
-    u32 type = PXIBuffer;
-    if (is_read_only)
-        type |= 0x2;
-    return type | (size << 8) | ((buffer_id & 0xF) << 4);
-}
-
-enum MappedBufferPermissions {
-    R = 1,
-    W = 2,
-    RW = R | W,
-};
-
-constexpr u32 MappedBufferDesc(u32 size, MappedBufferPermissions perms) {
-    return MappedBuffer | (size << 4) | (u32(perms) << 1);
-}
-
-union MappedBufferDescInfo {
-    u32 raw;
-    BitField<4, 28, u32> size;
-    BitField<1, 2, MappedBufferPermissions> perms;
-};
-
-inline MappedBufferDescInfo ParseMappedBufferDesc(const u32 desc) {
-    return{ desc };
-}
-
-inline DescriptorType GetDescriptorType(u32 descriptor) {
-    // Note: Those checks must be done in this order
-    if (isHandleDescriptor(descriptor))
-        return (DescriptorType)(descriptor & 0x30);
-
-    // handle the fact that the following descriptors can have rights
-    if (descriptor & MappedBuffer)
-        return MappedBuffer;
-
-    if (descriptor & PXIBuffer)
-        return PXIBuffer;
-
-    return StaticBuffer;
-}
-
-} // namespace IPC
-
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 // Namespace Service
 
@@ -220,9 +67,9 @@ public:
      * @param max_sessions Maximum number of sessions that can be
      * connected to this service at the same time.
      */
-    Interface(u32 max_sessions = DefaultMaxSessions) : max_sessions(max_sessions) { }
+    Interface(u32 max_sessions = DefaultMaxSessions);
 
-    virtual ~Interface() = default;
+    virtual ~Interface();
 
     std::string GetName() const {
         return GetPortName();

src/core/hle/service/srv.cpp

@@ -87,12 +87,7 @@ static void GetServiceHandle(Service::Interface* self) {
     if (it != Service::g_srv_services.end()) {
         auto client_port = it->second;
 
-        // Note: Threads do not wait for the server endpoint to call
-        // AcceptSession before returning from this call.
-
-        // Connect to the port and retrieve the client endpoint of the connection Session.
         auto client_session = client_port->Connect();
-
         res = client_session.Code();
 
         if (client_session.Succeeded()) {

src/core/hle/svc.cpp

@@ -226,19 +226,15 @@ static ResultCode ConnectToPort(Handle* out_handle, const char* port_name) {
 
     auto client_port = it->second;
 
-    // Connect to the port and retrieve the client endpoint of the connection Session.
     SharedPtr<Kernel::ClientSession> client_session;
     CASCADE_RESULT(client_session, client_port->Connect());
 
-    // Note: Threads do not wait for the server endpoint to call
-    // AcceptSession before returning from this call.
-
     // Return the client session
     CASCADE_RESULT(*out_handle, Kernel::g_handle_table.Create(client_session));
     return RESULT_SUCCESS;
 }
 
-/// Synchronize to an OS service
+/// Makes a blocking IPC call to an OS service.
 static ResultCode SendSyncRequest(Handle handle) {
     SharedPtr<Kernel::ClientSession> session = Kernel::g_handle_table.Get<Kernel::ClientSession>(handle);
     if (session == nullptr) {