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sf: alter serialization to re-use as much logic as possible

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This commit is contained in:
Michael Scire 2021-01-12 02:21:33 -08:00
parent d2f81d2ca2
commit 4f7f37fae6
1 changed files with 35 additions and 23 deletions
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48
libraries/libstratosphere/include/stratosphere/sf/impl/sf_impl_command_serialization.hpp
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@ -368,18 +368,11 @@ namespace ams::sf::impl {
size_t out_object_index;
};
template<auto MemberFunction, typename Return, typename Class, typename... Arguments>
template<typename... Arguments>
struct CommandMetaInfo {
public:
using ReturnType = Return;
using ClassType = Class;
using ClassTypePointer = ClassType *;
using ArgsType = std::tuple<typename std::decay<Arguments>::type...>;
static constexpr bool ReturnsResult = std::is_same<ReturnType, Result>::value;
static constexpr bool ReturnsVoid = std::is_same<ReturnType, void>::value;
static_assert(ReturnsResult || ReturnsVoid, "Service Commands must return Result or void.");
using InDatas = TupleFilter<InDataFilter>::FilteredType<ArgsType>;
using OutDatas = TupleFilter<OutDataFilter>::FilteredType<ArgsType>;
using Buffers = TupleFilter<BufferFilter>::FilteredType<ArgsType>;
@ -1036,15 +1029,13 @@ namespace ams::sf::impl {
return ResultSuccess();
}
template<auto ServiceCommandImpl, typename Return, typename ClassType, typename... Arguments>
constexpr Result InvokeServiceCommandImpl(CmifOutHeader **out_header_ptr, cmif::ServiceDispatchContext &ctx, const cmif::PointerAndSize &in_raw_data) {
using CommandMeta = CommandMetaInfo<ServiceCommandImpl, Return, ClassType, Arguments...>;
template<typename CommandMeta, typename... Arguments>
constexpr Result InvokeServiceCommandImplCommon(CmifOutHeader **out_header_ptr, cmif::ServiceDispatchContext &ctx, const cmif::PointerAndSize &in_raw_data, Result (*invoke_impl)(sf::IServiceObject *, Arguments &&...)) {
using ImplProcessorType = HipcCommandProcessor<CommandMeta>;
using BufferArrayType = std::array<cmif::PointerAndSize, CommandMeta::NumBuffers>;
using OutHandleHolderType = OutHandleHolder<CommandMeta::NumOutMoveHandles, CommandMeta::NumOutCopyHandles>;
using OutRawHolderType = OutRawHolder<CommandMeta::OutDataSize, CommandMeta::OutDataAlign>;
using InOutObjectHolderType = InOutObjectHolder<CommandMeta::NumInObjects, CommandMeta::NumOutObjects>;
static_assert(std::is_base_of<sf::IServiceObject, typename CommandMeta::ClassType>::value, "InvokeServiceCommandImpl: Service Commands must be ServiceObject member functions");
/* Create a processor for us to work with. */
ImplProcessorType impl_processor;
@ -1076,7 +1067,6 @@ namespace ams::sf::impl {
/* Decoding/Invocation. */
{
typename CommandMeta::ClassTypePointer this_ptr = static_cast<typename CommandMeta::ClassTypePointer>(ctx.srv_obj);
typename CommandMeta::ArgsType args_tuple = ImplProcessorType::DeserializeArguments(ctx, in_raw_data, out_raw_holder, buffers, out_handles_holder, in_out_objects_holder);
/* Handle in process ID holder if relevant. */
@ -1103,17 +1093,19 @@ namespace ams::sf::impl {
#undef _SF_IMPL_PROCESSOR_MARSHAL_PROCESS_ID
}
if constexpr (CommandMeta::ReturnsResult) {
const auto command_result = std::apply([=](auto&&... args) { return (this_ptr->*ServiceCommandImpl)(std::forward<Arguments>(args)...); }, args_tuple);
using TrueArgumentsTuple = std::tuple<Arguments...>;
sf::IServiceObject * const this_ptr = ctx.srv_obj;
const auto command_result = [this_ptr, invoke_impl, &args_tuple]<size_t ...Ix>(std::index_sequence<Ix...>) ALWAYS_INLINE_LAMBDA {
return invoke_impl(this_ptr, std::forward<typename std::tuple_element<Ix, TrueArgumentsTuple>::type>(std::get<Ix>(args_tuple))...);
}(std::make_index_sequence<std::tuple_size<typename CommandMeta::ArgsType>::value>());
if (R_FAILED(command_result)) {
cmif::PointerAndSize out_raw_data;
ctx.processor->PrepareForErrorReply(ctx, out_raw_data, runtime_metadata);
R_TRY(GetCmifOutHeaderPointer(out_header_ptr, out_raw_data));
return command_result;
}
} else {
std::apply([=](auto&&... args) { (this_ptr->*ServiceCommandImpl)(std::forward<Arguments>(args)...); }, args_tuple);
}
}
/* Encode. */
@ -1137,6 +1129,26 @@ namespace ams::sf::impl {
return ResultSuccess();
}
template<auto ServiceCommandImpl, typename Return, typename ClassType, typename... Arguments>
constexpr Result InvokeServiceCommandImpl(CmifOutHeader **out_header_ptr, cmif::ServiceDispatchContext &ctx, const cmif::PointerAndSize &in_raw_data) {
using CommandMeta = CommandMetaInfo<Arguments...>;
static_assert(std::is_base_of<sf::IServiceObject, ClassType>::value, "InvokeServiceCommandImpl: Service Commands must be ServiceObject member functions");
constexpr bool ReturnsResult = std::is_same<Return, Result>::value;
constexpr bool ReturnsVoid = std::is_same<Return, void>::value;
static_assert(ReturnsResult || ReturnsVoid, "Service Commands must return Result or void.");
return InvokeServiceCommandImplCommon<CommandMeta, Arguments...>(out_header_ptr, ctx, in_raw_data, +[](sf::IServiceObject *srv_obj, Arguments &&... args) -> Result {
if constexpr (ReturnsResult) {
return (static_cast<ClassType *>(srv_obj)->*ServiceCommandImpl)(std::forward<Arguments>(args)...);
} else {
(static_cast<ClassType *>(srv_obj)->*ServiceCommandImpl)(std::forward<Arguments>(args)...);
return ResultSuccess();
}
});
}
}
namespace ams::sf::impl {