core: service: Add FunctionInfoTyped to allow expanding existing interfaces
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1 changed files with 12 additions and 8 deletions
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@ -142,7 +142,8 @@ template <typename Self>
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class ServiceFramework : public ServiceFrameworkBase {
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protected:
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/// Contains information about a request type which is handled by the service.
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struct FunctionInfo : FunctionInfoBase {
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template <typename T>
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struct FunctionInfoTyped : FunctionInfoBase {
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// TODO(yuriks): This function could be constexpr, but clang is the only compiler that
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// doesn't emit an ICE or a wrong diagnostic because of the static_cast.
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@ -155,12 +156,13 @@ protected:
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* the request
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* @param name_ human-friendly name for the request. Used mostly for logging purposes.
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*/
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FunctionInfo(u32 expected_header_, HandlerFnP<Self> handler_callback_, const char* name_)
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FunctionInfoTyped(u32 expected_header_, HandlerFnP<T> handler_callback_, const char* name_)
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: FunctionInfoBase{
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expected_header_,
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// Type-erase member function pointer by casting it down to the base class.
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static_cast<HandlerFnP<ServiceFrameworkBase>>(handler_callback_), name_} {}
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};
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using FunctionInfo = FunctionInfoTyped<Self>;
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/**
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* Initializes the handler with no functions installed.
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@ -175,8 +177,8 @@ protected:
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: ServiceFrameworkBase(system_, service_name_, max_sessions_, Invoker) {}
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/// Registers handlers in the service.
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template <std::size_t N>
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void RegisterHandlers(const FunctionInfo (&functions)[N]) {
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template <typename T = Self, std::size_t N>
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void RegisterHandlers(const FunctionInfoTyped<T> (&functions)[N]) {
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RegisterHandlers(functions, N);
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}
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@ -184,13 +186,14 @@ protected:
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* Registers handlers in the service. Usually prefer using the other RegisterHandlers
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* overload in order to avoid needing to specify the array size.
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*/
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void RegisterHandlers(const FunctionInfo* functions, std::size_t n) {
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template <typename T = Self>
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void RegisterHandlers(const FunctionInfoTyped<T>* functions, std::size_t n) {
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RegisterHandlersBase(functions, n);
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}
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/// Registers handlers in the service.
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template <std::size_t N>
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void RegisterHandlersTipc(const FunctionInfo (&functions)[N]) {
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template <typename T = Self, std::size_t N>
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void RegisterHandlersTipc(const FunctionInfoTyped<T> (&functions)[N]) {
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RegisterHandlersTipc(functions, N);
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}
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@ -198,7 +201,8 @@ protected:
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* Registers handlers in the service. Usually prefer using the other RegisterHandlers
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* overload in order to avoid needing to specify the array size.
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*/
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void RegisterHandlersTipc(const FunctionInfo* functions, std::size_t n) {
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template <typename T = Self>
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void RegisterHandlersTipc(const FunctionInfoTyped<T>* functions, std::size_t n) {
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RegisterHandlersBaseTipc(functions, n);
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}
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