1 /* 2 * Copyright (C) 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef SRC_PROFILING_SYMBOLIZER_LOCAL_SYMBOLIZER_H_ 18 #define SRC_PROFILING_SYMBOLIZER_LOCAL_SYMBOLIZER_H_ 19 20 #include <map> 21 #include <string> 22 #include <vector> 23 24 #include "perfetto/ext/base/optional.h" 25 #include "perfetto/ext/base/pipe.h" 26 #include "src/profiling/symbolizer/symbolizer.h" 27 28 namespace perfetto { 29 namespace profiling { 30 31 class LocalBinaryFinder { 32 public: LocalBinaryFinder(std::vector<std::string> roots)33 LocalBinaryFinder(std::vector<std::string> roots) 34 : roots_(std::move(roots)) {} 35 36 base::Optional<std::string> FindBinary(const std::string& abspath, 37 const std::string& build_id); 38 39 private: 40 bool IsCorrectFile(const std::string& symbol_file, 41 const std::string& build_id); 42 43 base::Optional<std::string> FindBinaryInRoot(const std::string& root_str, 44 const std::string& abspath, 45 const std::string& build_id); 46 47 private: 48 std::vector<std::string> roots_; 49 std::map<std::string, base::Optional<std::string>> cache_; 50 }; 51 52 class Subprocess { 53 public: 54 Subprocess(const std::string& file, std::vector<std::string> args); 55 56 ~Subprocess(); 57 read_fd()58 int read_fd() { return output_pipe_.rd.get(); } write_fd()59 int write_fd() { return input_pipe_.wr.get(); } 60 61 private: 62 base::Pipe input_pipe_; 63 base::Pipe output_pipe_; 64 65 pid_t pid_ = -1; 66 }; 67 68 class LLVMSymbolizerProcess { 69 public: 70 LLVMSymbolizerProcess(); 71 72 std::vector<SymbolizedFrame> Symbolize(const std::string& binary, 73 uint64_t address); 74 75 private: 76 Subprocess subprocess_; 77 FILE* read_file_; 78 }; 79 80 class LocalSymbolizer : public Symbolizer { 81 public: LocalSymbolizer(std::vector<std::string> roots)82 LocalSymbolizer(std::vector<std::string> roots) : finder_(std::move(roots)) {} 83 84 std::vector<std::vector<SymbolizedFrame>> Symbolize( 85 const std::string& mapping_name, 86 const std::string& build_id, 87 const std::vector<uint64_t>& address) override; 88 89 ~LocalSymbolizer() override; 90 91 private: 92 LLVMSymbolizerProcess llvm_symbolizer_; 93 LocalBinaryFinder finder_; 94 }; 95 96 } // namespace profiling 97 } // namespace perfetto 98 99 #endif // SRC_PROFILING_SYMBOLIZER_LOCAL_SYMBOLIZER_H_ 100