Kernel/IPC: Use Ports and Sessions as the fundamental building block of Inter Process Communication.

All handles obtained via srv::GetServiceHandle or svcConnectToPort are references to ClientSessions.
Service modules will wait on the counterpart of those ClientSessions (Called ServerSessions) using svcReplyAndReceive or svcWaitSynchronization[1|N], and will be awoken when a SyncRequest is performed.

HLE Interfaces are now ClientPorts which override the HandleSyncRequest virtual member function to perform command handling immediately.

1 files changed, 16 insertions, 1 deletions

diff --git a/src/core/hle/service/srv.cpp b/src/core/hle/service/srv.cpp
index b25be413a..eb2e06041 100644
--- a/src/core/hle/service/srv.cpp
+++ b/src/core/hle/service/srv.cpp
@@ -2,8 +2,12 @@
 // Licensed under GPLv2 or any later version
 // Refer to the license.txt file included.
 
+#include <tuple>
+
 #include "common/common_types.h"
 #include "common/logging/log.h"
+#include "core/hle/service/srv.h"
+#include "core/hle/kernel/client_session.h"
 #include "core/hle/kernel/event.h"
 #include "core/hle/service/srv.h"
 
@@ -81,7 +85,18 @@ static void GetServiceHandle(Service::Interface* self) {
     auto it = Service::g_srv_services.find(port_name);
 
     if (it != Service::g_srv_services.end()) {
-        cmd_buff[3] = Kernel::g_handle_table.Create(it->second).MoveFrom();
+        auto client_port = it->second;
+
+        // Create a new session pair
+        auto sessions = Kernel::ServerSession::CreateSessionPair(client_port, port_name);
+        auto client_session = std::get<Kernel::SharedPtr<Kernel::ClientSession>>(sessions);
+        auto server_session = std::get<Kernel::SharedPtr<Kernel::ServerSession>>(sessions);
+
+        // Add the server session to the port's queue
+        client_port->AddWaitingSession(server_session);
+
+        // Return the client session
+        cmd_buff[3] = Kernel::g_handle_table.Create(client_session).MoveFrom();
         LOG_TRACE(Service_SRV, "called port=%s, handle=0x%08X", port_name.c_str(), cmd_buff[3]);
     } else {
         LOG_ERROR(Service_SRV, "(UNIMPLEMENTED) called port=%s", port_name.c_str());