A bit of a redesign.
Sessions and Ports are now detached from each other. HLE services are handled by means of a SessionRequestHandler class, Interface now inherits from this class. The File and Directory classes are no longer kernel objects, but SessionRequestHandlers instead, bound to a ServerSession when requested. File::OpenLinkFile now creates a new session pair and binds the File instance to it.
This commit is contained in:
Subv
parent
c5e7e0fa26
commit
009b15b3aa
13 changed files with 266 additions and 263 deletions
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@ -14,21 +14,7 @@ namespace Kernel {
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ClientPort::ClientPort() {}
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ClientPort::~ClientPort() {}
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Kernel::SharedPtr<ClientPort> ClientPort::CreateForHLE(u32 max_sessions, std::shared_ptr<Service::Interface> hle_interface) {
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SharedPtr<ClientPort> client_port(new ClientPort);
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client_port->max_sessions = max_sessions;
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client_port->active_sessions = 0;
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client_port->name = hle_interface->GetPortName();
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client_port->hle_interface = std::move(hle_interface);
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return client_port;
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}
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void ClientPort::AddWaitingSession(SharedPtr<ServerSession> server_session) {
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// A port that has an associated HLE interface doesn't have a server port.
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if (hle_interface != nullptr)
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return;
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server_port->pending_sessions.push_back(server_session);
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// Wake the threads waiting on the ServerPort
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server_port->WakeupAllWaitingThreads();
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@ -22,14 +22,6 @@ class ClientPort final : public Object {
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public:
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friend class ServerPort;
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/**
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* Creates a serverless ClientPort that represents a bridge between the HLE implementation of a service/port and the emulated application.
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* @param max_sessions Maximum number of sessions that this port is able to handle concurrently.
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* @param hle_interface Interface object that implements the commands of the service.
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* @returns ClientPort for the given HLE interface.
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*/
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static Kernel::SharedPtr<ClientPort> CreateForHLE(u32 max_sessions, std::shared_ptr<Service::Interface> hle_interface);
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/**
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* Adds the specified server session to the queue of pending sessions of the associated ServerPort
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* @param server_session Server session to add to the queue
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@ -44,12 +36,10 @@ public:
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return HANDLE_TYPE;
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}
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SharedPtr<ServerPort> server_port = nullptr; ///< ServerPort associated with this client port.
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SharedPtr<ServerPort> server_port; ///< ServerPort associated with this client port.
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u32 max_sessions; ///< Maximum number of simultaneous sessions the port can have
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u32 active_sessions; ///< Number of currently open sessions to this port
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std::string name; ///< Name of client port (optional)
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std::shared_ptr<Service::Interface> hle_interface = nullptr; ///< HLE implementation of this port's request handler
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private:
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ClientPort();
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~ClientPort() override;
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@ -15,29 +15,17 @@ namespace Kernel {
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ClientSession::ClientSession() {}
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ClientSession::~ClientSession() {}
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ResultVal<SharedPtr<ClientSession>> ClientSession::Create(SharedPtr<ServerSession> server_session, SharedPtr<ClientPort> client_port, std::string name) {
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ResultVal<SharedPtr<ClientSession>> ClientSession::Create(SharedPtr<ServerSession> server_session, std::string name) {
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SharedPtr<ClientSession> client_session(new ClientSession);
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client_session->name = std::move(name);
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client_session->server_session = server_session;
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client_session->client_port = client_port;
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client_session->hle_helper = client_port->hle_interface;
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return MakeResult<SharedPtr<ClientSession>>(std::move(client_session));
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}
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ResultCode ClientSession::HandleSyncRequest() {
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// Signal the server session that new data is available
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ResultCode result = server_session->HandleSyncRequest();
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if (result.IsError())
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return result;
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// If this ClientSession has an associated HLE helper, forward the request to it.
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if (hle_helper != nullptr)
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result = hle_helper->HandleSyncRequest(server_session);
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return result;
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return server_session->HandleSyncRequest();
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}
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} // namespace
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@ -25,11 +25,10 @@ public:
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/**
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* Creates a client session.
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* @param server_session The server session associated with this client session
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* @param client_port The client port which this session is connected to
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* @param name Optional name of client session
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* @return The created client session
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*/
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static ResultVal<SharedPtr<ClientSession>> Create(SharedPtr<ServerSession> server_session, SharedPtr<ClientPort> client_port, std::string name = "Unknown");
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static ResultVal<SharedPtr<ClientSession>> Create(SharedPtr<ServerSession> server_session, std::string name = "Unknown");
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std::string GetTypeName() const override { return "ClientSession"; }
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std::string GetName() const override { return name; }
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@ -45,8 +44,6 @@ public:
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std::string name; ///< Name of client port (optional)
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SharedPtr<ServerSession> server_session; ///< The server session associated with this client session.
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SharedPtr<ClientPort> client_port; ///< The client port which this session is connected to.
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std::shared_ptr<Service::Interface> hle_helper = nullptr; ///< HLE implementation of this port's request handler
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private:
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ClientSession();
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@ -14,11 +14,12 @@ namespace Kernel {
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ServerSession::ServerSession() {}
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ServerSession::~ServerSession() {}
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ResultVal<SharedPtr<ServerSession>> ServerSession::Create(std::string name) {
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ResultVal<SharedPtr<ServerSession>> ServerSession::Create(std::string name, std::shared_ptr<Service::SessionRequestHandler> hle_handler) {
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SharedPtr<ServerSession> server_session(new ServerSession);
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server_session->name = std::move(name);
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server_session->signaled = false;
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server_session->hle_handler = hle_handler;
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return MakeResult<SharedPtr<ServerSession>>(std::move(server_session));
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}
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@ -34,23 +35,21 @@ void ServerSession::Acquire() {
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ResultCode ServerSession::HandleSyncRequest() {
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// The ServerSession received a sync request, this means that there's new data available
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// from one of its ClientSessions, so wake up any threads that may be waiting on a svcReplyAndReceive or similar.
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// from its ClientSession, so wake up any threads that may be waiting on a svcReplyAndReceive or similar.
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// If this ServerSession has an associated HLE handler, forward the request to it.
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if (hle_handler != nullptr)
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return hle_handler->HandleSyncRequest(SharedPtr<ServerSession>(this));
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// If this ServerSession does not have an HLE implementation, just wake up the threads waiting on it.
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signaled = true;
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WakeupAllWaitingThreads();
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return RESULT_SUCCESS;
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}
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SharedPtr<ClientSession> ServerSession::CreateClientSession() {
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// In Citra, some types of ServerSessions (File and Directory sessions) are not created as a pair of Server-Client sessions,
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// but are instead created as a single ServerSession, which then hands over a ClientSession on demand (When opening the File or Directory).
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// The real kernel (Or more specifically, the real FS service) does create the pair of Sessions at the same time (via svcCreateSession), and simply
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// stores the ClientSession until it is needed.
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return ClientSession::Create(SharedPtr<ServerSession>(this), nullptr, name + "Client").MoveFrom();
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}
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std::tuple<SharedPtr<ServerSession>, SharedPtr<ClientSession>> ServerSession::CreateSessionPair(SharedPtr<ClientPort> client_port, const std::string& name) {
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auto server_session = ServerSession::Create(name + "Server").MoveFrom();
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auto client_session = ClientSession::Create(server_session, client_port, name + "Client").MoveFrom();
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std::tuple<SharedPtr<ServerSession>, SharedPtr<ClientSession>> ServerSession::CreateSessionPair(const std::string& name, std::shared_ptr<Service::SessionRequestHandler> hle_handler) {
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auto server_session = ServerSession::Create(name + "Server", hle_handler).MoveFrom();
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auto client_session = ClientSession::Create(server_session, name + "Client").MoveFrom();
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return std::make_tuple(server_session, client_session);
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}
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@ -10,158 +10,11 @@
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/kernel/thread.h"
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#include "core/hle/result.h"
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#include "core/hle/service/service.h"
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#include "core/memory.h"
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namespace IPC {
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enum DescriptorType : u32 {
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// Buffer related desciptors types (mask : 0x0F)
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StaticBuffer = 0x02,
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PXIBuffer = 0x04,
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MappedBuffer = 0x08,
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// Handle related descriptors types (mask : 0x30, but need to check for buffer related
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// descriptors first )
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CopyHandle = 0x00,
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MoveHandle = 0x10,
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CallingPid = 0x20,
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};
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/**
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* @brief Creates a command header to be used for IPC
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* @param command_id ID of the command to create a header for.
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* @param normal_params Size of the normal parameters in words. Up to 63.
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* @param translate_params_size Size of the translate parameters in words. Up to 63.
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* @return The created IPC header.
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*
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* Normal parameters are sent directly to the process while the translate parameters might go
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* through modifications and checks by the kernel.
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* The translate parameters are described by headers generated with the IPC::*Desc functions.
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*
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* @note While #normal_params is equivalent to the number of normal parameters,
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* #translate_params_size includes the size occupied by the translate parameters headers.
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*/
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constexpr u32 MakeHeader(u16 command_id, unsigned int normal_params,
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unsigned int translate_params_size) {
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return (u32(command_id) << 16) | ((u32(normal_params) & 0x3F) << 6) |
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(u32(translate_params_size) & 0x3F);
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}
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union Header {
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u32 raw;
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BitField<0, 6, u32> translate_params_size;
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BitField<6, 6, u32> normal_params;
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BitField<16, 16, u32> command_id;
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};
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inline Header ParseHeader(u32 header) {
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return {header};
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}
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constexpr u32 MoveHandleDesc(u32 num_handles = 1) {
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return MoveHandle | ((num_handles - 1) << 26);
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}
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constexpr u32 CopyHandleDesc(u32 num_handles = 1) {
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return CopyHandle | ((num_handles - 1) << 26);
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}
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constexpr u32 CallingPidDesc() {
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return CallingPid;
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}
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constexpr bool isHandleDescriptor(u32 descriptor) {
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return (descriptor & 0xF) == 0x0;
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}
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constexpr u32 HandleNumberFromDesc(u32 handle_descriptor) {
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return (handle_descriptor >> 26) + 1;
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}
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constexpr u32 StaticBufferDesc(u32 size, u8 buffer_id) {
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return StaticBuffer | (size << 14) | ((buffer_id & 0xF) << 10);
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}
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union StaticBufferDescInfo {
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u32 raw;
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BitField<10, 4, u32> buffer_id;
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BitField<14, 18, u32> size;
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};
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inline StaticBufferDescInfo ParseStaticBufferDesc(const u32 desc) {
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return {desc};
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}
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/**
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* @brief Creates a header describing a buffer to be sent over PXI.
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* @param size Size of the buffer. Max 0x00FFFFFF.
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* @param buffer_id The Id of the buffer. Max 0xF.
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* @param is_read_only true if the buffer is read-only. If false, the buffer is considered to have
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* read-write access.
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* @return The created PXI buffer header.
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*
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* The next value is a phys-address of a table located in the BASE memregion.
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*/
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inline u32 PXIBufferDesc(u32 size, unsigned buffer_id, bool is_read_only) {
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u32 type = PXIBuffer;
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if (is_read_only)
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type |= 0x2;
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return type | (size << 8) | ((buffer_id & 0xF) << 4);
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}
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enum MappedBufferPermissions {
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R = 1,
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W = 2,
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RW = R | W,
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};
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constexpr u32 MappedBufferDesc(u32 size, MappedBufferPermissions perms) {
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return MappedBuffer | (size << 4) | (u32(perms) << 1);
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}
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union MappedBufferDescInfo {
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u32 raw;
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BitField<4, 28, u32> size;
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BitField<1, 2, MappedBufferPermissions> perms;
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};
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inline MappedBufferDescInfo ParseMappedBufferDesc(const u32 desc) {
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return {desc};
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}
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inline DescriptorType GetDescriptorType(u32 descriptor) {
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// Note: Those checks must be done in this order
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if (isHandleDescriptor(descriptor))
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return (DescriptorType)(descriptor & 0x30);
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// handle the fact that the following descriptors can have rights
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if (descriptor & MappedBuffer)
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return MappedBuffer;
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if (descriptor & PXIBuffer)
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return PXIBuffer;
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return StaticBuffer;
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}
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} // namespace IPC
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namespace Kernel {
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static const int kCommandHeaderOffset = 0x80; ///< Offset into command buffer of header
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/**
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* Returns a pointer to the command buffer in the current thread's TLS
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* TODO(Subv): This is not entirely correct, the command buffer should be copied from
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* the thread's TLS to an intermediate buffer in kernel memory, and then copied again to
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* the service handler process' memory.
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* @param offset Optional offset into command buffer
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* @return Pointer to command buffer
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*/
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inline u32* GetCommandBuffer(const int offset = 0) {
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return (u32*)Memory::GetPointer(GetCurrentThread()->GetTLSAddress() + kCommandHeaderOffset +
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offset);
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}
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class ClientSession;
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class ClientPort;
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@ -183,11 +36,13 @@ public:
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~ServerSession() override;
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/**
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* Creates a server session.
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* @param name Optional name of the server session
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* Creates a server session. The server session can have an optional HLE handler,
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* which will be invoked to handle the IPC requests that this session receives.
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* @param name Optional name of the server session.
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* @param hle_handler Optional HLE handler for this server session.
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* @return The created server session
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*/
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static ResultVal<SharedPtr<ServerSession>> Create(std::string name = "Unknown");
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static ResultVal<SharedPtr<ServerSession>> Create(std::string name = "Unknown", std::shared_ptr<Service::SessionRequestHandler> hle_handler = nullptr);
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std::string GetTypeName() const override { return "ServerSession"; }
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@ -196,17 +51,10 @@ public:
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/**
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* Creates a pair of ServerSession and an associated ClientSession.
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* @param client_port ClientPort to which the sessions are connected
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* @param name Optional name of the ports
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* @return The created session tuple
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*/
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static std::tuple<SharedPtr<ServerSession>, SharedPtr<ClientSession>> CreateSessionPair(SharedPtr<ClientPort> client_port, const std::string& name = "Unknown");
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/**
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* Creates a portless ClientSession and associates it with this ServerSession.
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* @returns ClientSession The newly created ClientSession.
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*/
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SharedPtr<ClientSession> CreateClientSession();
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static std::tuple<SharedPtr<ServerSession>, SharedPtr<ClientSession>> CreateSessionPair(const std::string& name = "Unknown", std::shared_ptr<Service::SessionRequestHandler> hle_handler = nullptr);
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/**
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* Handle a sync request from the emulated application.
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@ -221,5 +69,6 @@ public:
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std::string name; ///< The name of this session (optional)
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bool signaled; ///< Whether there's new data available to this ServerSession
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std::shared_ptr<Service::SessionRequestHandler> hle_handler; ///< This session's HLE request handler (optional)
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};
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}
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