Add consumer API and --query cmdline to list data sources

This CL adds a --query (and --query-raw) cmdline option to
the perfetto cmdline client to list the data sources connected
(whether they are tracing or not) and to retrieve the
DataSourceDescriptor passed at registration time.
--query returns a human readable format (for debugging).
  It does NOT print the full DataSourceDescriptor (because
  it might now know the schema)
  Example: https://pastebin.com/cC9mAWw1
--query-raw is for machine-to-machine and passes through
  the whole tracing_service_state.proto, including the
  DataSourceDescriptor(s).

Bug: 132678367
Test: unittests + integrationtests
Change-Id: Id776cc6efe4109ad879380fd6adab8e9d685351a
30 files changed
tree: fa3be7479cc629c7a8b151af87a5e6609cfef9b9
  1. build_overrides/
  2. buildtools/
  3. debian/
  4. docs/
  5. gn/
  6. include/
  7. infra/
  8. protos/
  9. src/
  10. test/
  11. tools/
  12. ui/
  13. .clang-format
  14. .gitignore
  15. .gn
  16. .travis.yml
  17. Android.bp
  18. Android.bp.extras
  19. BUILD
  20. BUILD.extras
  21. BUILD.gn
  22. codereview.settings
  23. heapprofd.rc
  24. MODULE_LICENSE_APACHE2
  25. NOTICE
  26. OWNERS
  27. perfetto.rc
  28. PRESUBMIT.py
  29. README.chromium
  30. README.md
  31. TEST_MAPPING
README.md

Perfetto - Performance instrumentation and tracing

Perfetto is an open-source project for performance instrumentation and tracing of Linux/Android/Chrome platforms and user-space apps.

See www.perfetto.dev for docs.

Bugs

  • For bugs affecting Android or the tracing internals use the internal bug tracker (go/perfetto-bugs).
  • For bugs affecting Chrome use http://crbug.com, Component:Speed>Tracing label:Perfetto.