| // Copyright (c) 2013 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // TODO(asharif): Move this and other utilities to contrib/ dir. |
| #include "chromiumos-wide-profiling/conversion_utils.h" |
| |
| #include <stdlib.h> |
| #include <unistd.h> |
| |
| #include <string> |
| #include <vector> |
| |
| #include <google/protobuf/text_format.h> |
| |
| #include "base/logging.h" |
| |
| #include "chromiumos-wide-profiling/perf_protobuf_io.h" |
| #include "chromiumos-wide-profiling/perf_serializer.h" |
| #include "chromiumos-wide-profiling/quipper_string.h" |
| #include "chromiumos-wide-profiling/utils.h" |
| |
| using google::protobuf::TextFormat; |
| |
| namespace quipper { |
| |
| namespace { |
| |
| // Parse options from the format strings, set the options, and return the base |
| // format. Returns the empty string if options are not recognized. |
| string ParseFormatOptions(string format, PerfParser::Options* options) { |
| auto dot = format.find('.'); |
| if (dot != string::npos) { |
| string opt = format.substr(dot+1); |
| format = format.substr(0, dot); |
| if (opt == "remap") { |
| options->do_remap = true; |
| } else if (opt == "discard") { |
| options->discard_unused_events = true; |
| } else if (opt == "remap.discard") { |
| options->do_remap = true; |
| options->discard_unused_events = true; |
| } else { |
| LOG(ERROR) << "Unknown option: " << opt; |
| return ""; |
| } |
| } |
| return format; |
| } |
| |
| // ReadInput reads the input and stores it within |perf_serializer|. |
| bool ReadInput(const FormatAndFile& input, PerfSerializer* perf_serializer) { |
| LOG(INFO) << "Reading input."; |
| |
| PerfParser::Options options; |
| string format = ParseFormatOptions(input.format, &options); |
| perf_serializer->set_options(options); |
| |
| if (format == kPerfFormat) { |
| return perf_serializer->ReadFile(input.filename); |
| } |
| |
| if (format == kProtoTextFormat) { |
| PerfDataProto perf_data_proto; |
| std::vector<char> data; |
| if (!FileToBuffer(input.filename, &data)) return false; |
| string text(data.begin(), data.end()); |
| if (!TextFormat::ParseFromString(text, &perf_data_proto)) return false; |
| |
| if (!perf_serializer->Deserialize(perf_data_proto)) return false; |
| return true; |
| } |
| |
| LOG(ERROR) << "Unimplemented read format: " << input.format; |
| return false; |
| } |
| |
| // WriteOutput reads from |perf_serializer| and writes the output to the file |
| // within |output|. |
| bool WriteOutput(const FormatAndFile& output, PerfSerializer* perf_serializer) { |
| LOG(INFO) << "Writing output."; |
| string output_string; |
| if (output.format == kPerfFormat) { |
| return perf_serializer->WriteFile(output.filename); |
| } |
| |
| if (output.format == kProtoTextFormat) { |
| PerfDataProto perf_data_proto; |
| perf_serializer->Serialize(&perf_data_proto); |
| // Reset the timestamp field since it causes reproducability issues when |
| // testing. |
| perf_data_proto.set_timestamp_sec(0); |
| if (!TextFormat::PrintToString(perf_data_proto, &output_string)) |
| return false; |
| std::vector<char> data(output_string.begin(), output_string.end()); |
| return BufferToFile(output.filename, data); |
| } |
| |
| LOG(ERROR) << "Unimplemented write format: " << output.format; |
| return false; |
| } |
| |
| } // namespace |
| |
| // Format string for perf.data. |
| const char kPerfFormat[] = "perf"; |
| |
| // Format string for protobuf text format. |
| const char kProtoTextFormat[] = "text"; |
| |
| bool ConvertFile(const FormatAndFile& input, const FormatAndFile& output) { |
| quipper::PerfSerializer perf_serializer; |
| if (!ReadInput(input, &perf_serializer)) return false; |
| if (!WriteOutput(output, &perf_serializer)) return false; |
| return true; |
| } |
| |
| } // namespace quipper |