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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/kernel/svc/svc_session.cpp | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/src/core/hle/kernel/svc/svc_session.cpp b/src/core/hle/kernel/svc/svc_session.cpp new file mode 100644 index 000000000..01b8a52ad --- /dev/null +++ b/src/core/hle/kernel/svc/svc_session.cpp @@ -0,0 +1,127 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#include "common/scope_exit.h" +#include "core/core.h" +#include "core/hle/kernel/k_process.h" +#include "core/hle/kernel/k_scoped_resource_reservation.h" +#include "core/hle/kernel/k_session.h" +#include "core/hle/kernel/svc.h" + +namespace Kernel::Svc { +namespace { + +template <typename T> +Result CreateSession(Core::System& system, Handle* out_server, Handle* out_client, uint64_t name) { + auto& process = GetCurrentProcess(system.Kernel()); + auto& handle_table = process.GetHandleTable(); + + // Declare the session we're going to allocate. + T* session; + + // Reserve a new session from the process resource limit. + // FIXME: LimitableResource_SessionCountMax + KScopedResourceReservation session_reservation(std::addressof(process), + LimitableResource::SessionCountMax); + if (session_reservation.Succeeded()) { + session = T::Create(system.Kernel()); + } else { + R_THROW(ResultLimitReached); + + // // We couldn't reserve a session. Check that we support dynamically expanding the + // // resource limit. + // R_UNLESS(process.GetResourceLimit() == + // std::addressof(system.Kernel().GetSystemResourceLimit()), ResultLimitReached); + // R_UNLESS(KTargetSystem::IsDynamicResourceLimitsEnabled(), ResultLimitReached()); + + // // Try to allocate a session from unused slab memory. + // session = T::CreateFromUnusedSlabMemory(); + // R_UNLESS(session != nullptr, ResultLimitReached); + // ON_RESULT_FAILURE { session->Close(); }; + + // // If we're creating a KSession, we want to add two KSessionRequests to the heap, to + // // prevent request exhaustion. + // // NOTE: Nintendo checks if session->DynamicCast<KSession *>() != nullptr, but there's + // // no reason to not do this statically. + // if constexpr (std::same_as<T, KSession>) { + // for (size_t i = 0; i < 2; i++) { + // KSessionRequest* request = KSessionRequest::CreateFromUnusedSlabMemory(); + // R_UNLESS(request != nullptr, ResultLimitReached); + // request->Close(); + // } + // } + + // We successfully allocated a session, so add the object we allocated to the resource + // limit. + // system.Kernel().GetSystemResourceLimit().Reserve(LimitableResource::SessionCountMax, 1); + } + + // Check that we successfully created a session. + R_UNLESS(session != nullptr, ResultOutOfResource); + + // Initialize the session. + session->Initialize(nullptr, name); + + // Commit the session reservation. + session_reservation.Commit(); + + // Ensure that we clean up the session (and its only references are handle table) on function + // end. + SCOPE_EXIT({ + session->GetClientSession().Close(); + session->GetServerSession().Close(); + }); + + // Register the session. + T::Register(system.Kernel(), session); + + // Add the server session to the handle table. + R_TRY(handle_table.Add(out_server, std::addressof(session->GetServerSession()))); + + // Ensure that we maintain a clean handle state on exit. + ON_RESULT_FAILURE { + handle_table.Remove(*out_server); + }; + + // Add the client session to the handle table. + R_RETURN(handle_table.Add(out_client, std::addressof(session->GetClientSession()))); +} + +} // namespace + +Result CreateSession(Core::System& system, Handle* out_server, Handle* out_client, bool is_light, + u64 name) { + if (is_light) { + // return CreateSession<KLightSession>(system, out_server, out_client, name); + R_THROW(ResultNotImplemented); + } else { + R_RETURN(CreateSession<KSession>(system, out_server, out_client, name)); + } +} + +Result AcceptSession(Core::System& system, Handle* out_handle, Handle port_handle) { + UNIMPLEMENTED(); + R_THROW(ResultNotImplemented); +} + +Result CreateSession64(Core::System& system, Handle* out_server_session_handle, + Handle* out_client_session_handle, bool is_light, uint64_t name) { + R_RETURN(CreateSession(system, out_server_session_handle, out_client_session_handle, is_light, + name)); +} + +Result AcceptSession64(Core::System& system, Handle* out_handle, Handle port) { + R_RETURN(AcceptSession(system, out_handle, port)); +} + +Result CreateSession64From32(Core::System& system, Handle* out_server_session_handle, + Handle* out_client_session_handle, bool is_light, uint32_t name) { + R_RETURN(CreateSession(system, out_server_session_handle, out_client_session_handle, is_light, + name)); +} + +Result AcceptSession64From32(Core::System& system, Handle* out_handle, Handle port) { + R_RETURN(AcceptSession(system, out_handle, port)); +} + +} // namespace Kernel::Svc |