1 // Copyright 2022 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 15 #include <cstdio> 16 #include <mutex> 17 18 #include "pw_assert/check.h" 19 #include "pw_stream/socket_stream.h" 20 #include "pw_stream/stream.h" 21 #include "pw_system/config.h" 22 #include "pw_system/io.h" 23 24 namespace pw::system { 25 namespace { 26 27 constexpr uint16_t kPort = PW_SYSTEM_SOCKET_IO_PORT; 28 GetStream()29stream::SocketStream& GetStream() { 30 static bool running = false; 31 static std::mutex socket_open_lock; 32 static stream::SocketStream socket_stream; 33 std::lock_guard guard(socket_open_lock); 34 if (!running) { 35 printf("Awaiting connection on port %d\n", static_cast<int>(kPort)); 36 PW_CHECK_OK(socket_stream.Serve(kPort)); 37 printf("Client connected\n"); 38 running = true; 39 } 40 return socket_stream; 41 } 42 43 } // namespace 44 GetReader()45stream::Reader& GetReader() { return GetStream(); } GetWriter()46stream::Writer& GetWriter() { return GetStream(); } 47 48 } // namespace pw::system 49