0cbcd6ec9a
As means to pave the way for getting rid of global state within core, This eliminates kernel global state by removing all globals. Instead this introduces a KernelCore class which acts as a kernel instance. This instance lives in the System class, which keeps its lifetime contained to the lifetime of the System class. This also forces the kernel types to actually interact with the main kernel instance itself instead of having transient kernel state placed all over several translation units, keeping everything together. It also has a nice consequence of making dependencies much more explicit. This also makes our initialization a tad bit more correct. Previously we were creating a kernel process before the actual kernel was initialized, which doesn't really make much sense. The KernelCore class itself follows the PImpl idiom, which allows keeping all the implementation details sealed away from everything else, which forces the use of the exposed API and allows us to avoid any unnecessary inclusions within the main kernel header.
138 lines
4.3 KiB
C++
138 lines
4.3 KiB
C++
// Copyright 2018 yuzu emulator team
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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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#include <tuple>
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#include "common/assert.h"
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#include "core/core.h"
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#include "core/hle/ipc_helpers.h"
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#include "core/hle/kernel/client_port.h"
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#include "core/hle/kernel/client_session.h"
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#include "core/hle/kernel/server_port.h"
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#include "core/hle/result.h"
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#include "core/hle/service/sm/controller.h"
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#include "core/hle/service/sm/sm.h"
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namespace Service::SM {
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ServiceManager::~ServiceManager() = default;
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void ServiceManager::InvokeControlRequest(Kernel::HLERequestContext& context) {
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controller_interface->InvokeRequest(context);
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}
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static ResultCode ValidateServiceName(const std::string& name) {
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if (name.size() <= 0 || name.size() > 8) {
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return ERR_INVALID_NAME_SIZE;
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}
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if (name.find('\0') != std::string::npos) {
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return ERR_NAME_CONTAINS_NUL;
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}
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return RESULT_SUCCESS;
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}
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void ServiceManager::InstallInterfaces(std::shared_ptr<ServiceManager> self) {
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ASSERT(self->sm_interface.expired());
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auto sm = std::make_shared<SM>(self);
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sm->InstallAsNamedPort();
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self->sm_interface = sm;
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self->controller_interface = std::make_unique<Controller>();
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}
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ResultVal<Kernel::SharedPtr<Kernel::ServerPort>> ServiceManager::RegisterService(
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std::string name, unsigned int max_sessions) {
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CASCADE_CODE(ValidateServiceName(name));
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if (registered_services.find(name) != registered_services.end())
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return ERR_ALREADY_REGISTERED;
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auto& kernel = Core::System::GetInstance().Kernel();
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Kernel::SharedPtr<Kernel::ServerPort> server_port;
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Kernel::SharedPtr<Kernel::ClientPort> client_port;
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std::tie(server_port, client_port) =
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Kernel::ServerPort::CreatePortPair(kernel, max_sessions, name);
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registered_services.emplace(std::move(name), std::move(client_port));
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return MakeResult<Kernel::SharedPtr<Kernel::ServerPort>>(std::move(server_port));
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}
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ResultVal<Kernel::SharedPtr<Kernel::ClientPort>> ServiceManager::GetServicePort(
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const std::string& name) {
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CASCADE_CODE(ValidateServiceName(name));
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auto it = registered_services.find(name);
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if (it == registered_services.end()) {
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return ERR_SERVICE_NOT_REGISTERED;
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}
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return MakeResult<Kernel::SharedPtr<Kernel::ClientPort>>(it->second);
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}
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ResultVal<Kernel::SharedPtr<Kernel::ClientSession>> ServiceManager::ConnectToService(
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const std::string& name) {
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CASCADE_RESULT(auto client_port, GetServicePort(name));
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return client_port->Connect();
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}
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SM::~SM() = default;
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/**
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* SM::Initialize service function
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* Inputs:
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* 0: 0x00000000
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* Outputs:
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* 0: ResultCode
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*/
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void SM::Initialize(Kernel::HLERequestContext& ctx) {
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IPC::ResponseBuilder rb{ctx, 2};
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rb.Push(RESULT_SUCCESS);
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LOG_DEBUG(Service_SM, "called");
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}
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void SM::GetService(Kernel::HLERequestContext& ctx) {
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IPC::RequestParser rp{ctx};
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auto name_buf = rp.PopRaw<std::array<char, 8>>();
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auto end = std::find(name_buf.begin(), name_buf.end(), '\0');
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std::string name(name_buf.begin(), end);
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// TODO(yuriks): Permission checks go here
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auto client_port = service_manager->GetServicePort(name);
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if (client_port.Failed()) {
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IPC::ResponseBuilder rb = rp.MakeBuilder(2, 0, 0);
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rb.Push(client_port.Code());
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LOG_ERROR(Service_SM, "called service={} -> error 0x{:08X}", name, client_port.Code().raw);
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if (name.length() == 0)
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return; // LibNX Fix
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UNIMPLEMENTED();
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return;
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}
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auto session = client_port.Unwrap()->Connect();
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ASSERT(session.Succeeded());
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if (session.Succeeded()) {
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LOG_DEBUG(Service_SM, "called service={} -> session={}", name, (*session)->GetObjectId());
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IPC::ResponseBuilder rb =
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rp.MakeBuilder(2, 0, 1, IPC::ResponseBuilder::Flags::AlwaysMoveHandles);
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rb.Push(session.Code());
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rb.PushMoveObjects(std::move(session).Unwrap());
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}
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}
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SM::SM(std::shared_ptr<ServiceManager> service_manager)
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: ServiceFramework("sm:", 4), service_manager(std::move(service_manager)) {
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static const FunctionInfo functions[] = {
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{0x00000000, &SM::Initialize, "Initialize"},
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{0x00000001, &SM::GetService, "GetService"},
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{0x00000002, nullptr, "RegisterService"},
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{0x00000003, nullptr, "UnregisterService"},
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};
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RegisterHandlers(functions);
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}
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} // namespace Service::SM
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