42 …v[0] << " [--config-proto=config.pb] [--duration-ms=5000] [--output-proto=output.pb]" << std::endl;  in Usage()
43   std::cerr << "" << std::endl;  in Usage()
44 …"  Request a perfetto trace, blocking until it's complete. The resulting trace proto" << std::endl;  in Usage()
45   std::cerr << "  is output to stdout as text, or to --output-proto as a binary." << std::endl;  in Usage()
46   std::cerr << "" << std::endl;  in Usage()
47   std::cerr << "  Optional flags:" << std::endl;  in Usage()
48   std::cerr << "    --help,-h                  Print this Usage." << std::endl;  in Usage()
49 …< "    --output-proto $,-op $     Perfetto tracebuffer output file (default stdout)." << std::endl;  in Usage()
50   std::cerr << "    --config-proto $,-cp $     Path to binary protobuf config." << std::endl;  in Usage()
51 …::cerr << "    --duration-ms $,-dm $      How long to run trace for in milliseconds." << std::endl;  in Usage()
52 …simple                   Simplest possible perfetto state transitions (default off)." << std::endl;  in Usage()
53   std::cerr << "    --verbose,-v               Set verbosity (default off)." << std::endl;  in Usage()
54 …"    --wait,-w                  Wait for key stroke before continuing (default off)." << std::endl;  in Usage()
169         std::cerr << "Missing --output-proto <value>" << std::endl;  in main()
176         std::cerr << "Missing --config-proto <value>" << std::endl;  in main()
184         std::cerr << "Missing --duration-ms <value>" << std::endl;  in main()