| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef INCLUDE_PERFETTO_IPC_SERVICE_DESCRIPTOR_H_ |
| #define INCLUDE_PERFETTO_IPC_SERVICE_DESCRIPTOR_H_ |
| |
| #include <functional> |
| #include <string> |
| #include <utility> |
| #include <vector> |
| |
| #include "perfetto/ipc/basic_types.h" |
| #include "perfetto/ipc/deferred.h" |
| |
| namespace perfetto { |
| namespace ipc { |
| |
| class Service; |
| |
| // This is a pure data structure which holds factory methods and strings for the |
| // services and their methods that get generated in the .h/.cc files. |
| // Each autogenerated class has a GetDescriptor() method that returns one |
| // instance of these and allows both client and hosts to map service and method |
| // names to IDs and provide function pointers to the protobuf decoder fuctions. |
| class ServiceDescriptor { |
| public: |
| struct Method { |
| const char* name; |
| |
| // DecoderFunc is pointer to a function that takes a string in input |
| // containing protobuf encoded data and returns a decoded protobuf message. |
| using DecoderFunc = std::unique_ptr<ProtoMessage> (*)(const std::string&); |
| |
| // Function pointer to decode the request argument of the method. |
| DecoderFunc request_proto_decoder; |
| |
| // Function pointer to decoded the reply argument of the method. |
| DecoderFunc reply_proto_decoder; |
| |
| // Function pointer that dispatches the generic request to the corresponding |
| // method implementation. |
| using InvokerFunc = void (*)(Service*, |
| const ProtoMessage& /* request_args */, |
| DeferredBase /* deferred_reply */); |
| InvokerFunc invoker; |
| }; |
| |
| const char* service_name = nullptr; |
| |
| // Note that methods order is not stable. Client and Host might have different |
| // method indexes, depending on their versions. The Client can't just rely |
| // on the indexes and has to keep a [string -> remote index] translation map. |
| std::vector<Method> methods; |
| }; |
| |
| } // namespace ipc |
| } // namespace perfetto |
| |
| #endif // INCLUDE_PERFETTO_IPC_SERVICE_DESCRIPTOR_H_ |