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Merge pull request #2406 from Subv/session_disconnect
Kernel: Properly update port counters on session disconnection.
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commit
cc566dadd8
@ -239,6 +239,7 @@ set(HEADERS
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hle/kernel/semaphore.h
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hle/kernel/server_port.h
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hle/kernel/server_session.h
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hle/kernel/session.h
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hle/kernel/shared_memory.h
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hle/kernel/thread.h
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hle/kernel/timer.h
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@ -19,23 +19,20 @@ ResultVal<SharedPtr<ClientSession>> ClientPort::Connect() {
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// AcceptSession before returning from this call.
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if (active_sessions >= max_sessions) {
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// TODO(Subv): Return an error code in this situation after session disconnection is
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// implemented.
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/*return ResultCode(ErrorDescription::MaxConnectionsReached,
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ErrorModule::OS, ErrorSummary::WouldBlock,
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ErrorLevel::Temporary);*/
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return ResultCode(ErrorDescription::MaxConnectionsReached, ErrorModule::OS,
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ErrorSummary::WouldBlock, ErrorLevel::Temporary);
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}
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active_sessions++;
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// Create a new session pair, let the created sessions inherit the parent port's HLE handler.
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auto sessions =
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ServerSession::CreateSessionPair(server_port->GetName(), server_port->hle_handler);
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ServerSession::CreateSessionPair(server_port->GetName(), server_port->hle_handler, this);
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auto client_session = std::get<SharedPtr<ClientSession>>(sessions);
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auto server_session = std::get<SharedPtr<ServerSession>>(sessions);
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if (server_port->hle_handler)
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server_port->hle_handler->ClientConnected(server_session);
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else
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server_port->pending_sessions.push_back(std::move(server_session));
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// Wake the threads waiting on the ServerPort
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@ -14,27 +14,24 @@ ClientSession::~ClientSession() {
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// This destructor will be called automatically when the last ClientSession handle is closed by
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// the emulated application.
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if (server_session->hle_handler)
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server_session->hle_handler->ClientDisconnected(server_session);
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if (parent->server) {
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if (parent->server->hle_handler)
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parent->server->hle_handler->ClientDisconnected(parent->server);
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// TODO(Subv): If the session is still open, set the connection status to 2 (Closed by client),
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// wake up all the ServerSession's waiting threads and set the WaitSynchronization result to
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// 0xC920181A.
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}
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// TODO(Subv): Force a wake up of all the ServerSession's waiting threads and set
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// their WaitSynchronization result to 0xC920181A.
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}
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ResultVal<SharedPtr<ClientSession>> ClientSession::Create(ServerSession* server_session,
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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->session_status = SessionStatus::Open;
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return MakeResult<SharedPtr<ClientSession>>(std::move(client_session));
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parent->client = nullptr;
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}
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ResultCode ClientSession::SendSyncRequest() {
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// Signal the server session that new data is available
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return server_session->HandleSyncRequest();
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if (parent->server)
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return parent->server->HandleSyncRequest();
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return ResultCode(ErrorDescription::SessionClosedByRemote, ErrorModule::OS,
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ErrorSummary::Canceled, ErrorLevel::Status);
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}
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} // namespace
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@ -14,12 +14,7 @@
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namespace Kernel {
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class ServerSession;
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enum class SessionStatus {
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Open = 1,
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ClosedByClient = 2,
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ClosedBYServer = 3,
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};
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class Session;
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class ClientSession final : public Object {
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public:
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@ -45,21 +40,13 @@ public:
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ResultCode SendSyncRequest();
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std::string name; ///< Name of client port (optional)
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ServerSession* server_session; ///< The server session associated with this client session.
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SessionStatus session_status; ///< The session's current status.
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/// The parent session, which links to the server endpoint.
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std::shared_ptr<Session> parent;
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private:
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ClientSession();
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~ClientSession() override;
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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 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(ServerSession* server_session,
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std::string name = "Unknown");
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};
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} // namespace
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@ -14,8 +14,15 @@ ServerSession::ServerSession() = default;
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ServerSession::~ServerSession() {
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// This destructor will be called automatically when the last ServerSession handle is closed by
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// the emulated application.
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// TODO(Subv): Reduce the ClientPort's connection count,
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// if the session is still open, set the connection status to 3 (Closed by server),
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// Decrease the port's connection count.
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if (parent->port)
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parent->port->active_sessions--;
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// TODO(Subv): Wake up all the ClientSession's waiting threads and set
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// the SendSyncRequest result to 0xC920181A.
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parent->server = nullptr;
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}
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ResultVal<SharedPtr<ServerSession>> ServerSession::Create(
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@ -25,6 +32,7 @@ ResultVal<SharedPtr<ServerSession>> ServerSession::Create(
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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 = std::move(hle_handler);
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server_session->parent = nullptr;
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return MakeResult<SharedPtr<ServerSession>>(std::move(server_session));
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}
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@ -61,13 +69,22 @@ ResultCode ServerSession::HandleSyncRequest() {
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}
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ServerSession::SessionPair ServerSession::CreateSessionPair(
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const std::string& name, std::shared_ptr<Service::SessionRequestHandler> hle_handler) {
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const std::string& name, std::shared_ptr<Service::SessionRequestHandler> hle_handler,
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SharedPtr<ClientPort> port) {
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auto server_session =
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ServerSession::Create(name + "_Server", std::move(hle_handler)).MoveFrom();
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// We keep a non-owning pointer to the ServerSession in the ClientSession because we don't want
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// to prevent the ServerSession's destructor from being called when the emulated
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// application closes the last ServerSession handle.
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auto client_session = ClientSession::Create(server_session.get(), name + "_Client").MoveFrom();
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SharedPtr<ClientSession> client_session(new ClientSession);
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client_session->name = name + "_Client";
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std::shared_ptr<Session> parent(new Session);
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parent->client = client_session.get();
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parent->server = server_session.get();
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parent->port = port;
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client_session->parent = parent;
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server_session->parent = parent;
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return std::make_tuple(std::move(server_session), std::move(client_session));
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}
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@ -9,6 +9,7 @@
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#include "common/assert.h"
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#include "common/common_types.h"
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/kernel/session.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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@ -17,6 +18,8 @@
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namespace Kernel {
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class ClientSession;
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class ClientPort;
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class ServerSession;
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/**
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* Kernel object representing the server endpoint of an IPC session. Sessions are the basic CTR-OS
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@ -47,11 +50,13 @@ public:
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* Creates a pair of ServerSession and an associated ClientSession.
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* @param name Optional name of the ports.
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* @param hle_handler Optional HLE handler for this server session.
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* @param client_port Optional The ClientPort that spawned this session.
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* @return The created session tuple
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*/
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static SessionPair CreateSessionPair(
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const std::string& name = "Unknown",
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std::shared_ptr<Service::SessionRequestHandler> hle_handler = nullptr);
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std::shared_ptr<Service::SessionRequestHandler> hle_handler = nullptr,
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SharedPtr<ClientPort> client_port = nullptr);
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/**
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* Handle a sync request from the emulated application.
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@ -65,6 +70,7 @@ 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<Session> parent; ///< The parent session, which links to the client endpoint.
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std::shared_ptr<Service::SessionRequestHandler>
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hle_handler; ///< This session's HLE request handler (optional)
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27
src/core/hle/kernel/session.h
Normal file
27
src/core/hle/kernel/session.h
Normal file
@ -0,0 +1,27 @@
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// Copyright 2017 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include "core/hle/kernel/kernel.h"
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namespace Kernel {
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class ClientSession;
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class ClientPort;
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class ServerSession;
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/**
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* Parent structure to link the client and server endpoints of a session with their associated
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* client port. The client port need not exist, as is the case for portless sessions like the
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* FS File and Directory sessions. When one of the endpoints of a session is destroyed, its
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* corresponding field in this structure will be set to nullptr.
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*/
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class Session final {
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public:
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ClientSession* client = nullptr; ///< The client endpoint of the session.
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ServerSession* server = nullptr; ///< The server endpoint of the session.
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SharedPtr<ClientPort> port; ///< The port that this session is associated with (optional).
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};
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}
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@ -16,6 +16,7 @@
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/// Detailed description of the error. This listing is likely incomplete.
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enum class ErrorDescription : u32 {
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Success = 0,
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SessionClosedByRemote = 26,
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WrongPermission = 46,
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OS_InvalidBufferDescriptor = 48,
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MaxConnectionsReached = 52,
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