1 /* 2 * 3 * Copyright 2017 gRPC authors. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 */ 18 19 #ifndef GRPC_CORE_LIB_GPRPP_DEBUG_LOCATION_H 20 #define GRPC_CORE_LIB_GPRPP_DEBUG_LOCATION_H 21 22 namespace grpc_core { 23 24 // Used for tracking file and line where a call is made for debug builds. 25 // No-op for non-debug builds. 26 // Callers can use the DEBUG_LOCATION macro in either case. 27 #ifndef NDEBUG 28 // TODO(roth): See if there's a way to automatically populate this, 29 // similarly to how absl::SourceLocation::current() works, so that 30 // callers don't need to explicitly pass DEBUG_LOCATION anywhere. 31 class DebugLocation { 32 public: DebugLocation(const char * file,int line)33 DebugLocation(const char* file, int line) : file_(file), line_(line) {} file()34 const char* file() const { return file_; } line()35 int line() const { return line_; } 36 37 private: 38 const char* file_; 39 const int line_; 40 }; 41 #define DEBUG_LOCATION ::grpc_core::DebugLocation(__FILE__, __LINE__) 42 #else 43 class DebugLocation { 44 public: 45 const char* file() const { return nullptr; } 46 int line() const { return -1; } 47 }; 48 #define DEBUG_LOCATION ::grpc_core::DebugLocation() 49 #endif 50 51 } // namespace grpc_core 52 53 #endif /* GRPC_CORE_LIB_GPRPP_DEBUG_LOCATION_H */ 54