Allow typed proto messages to be written into TracedValue.

This patch adds TracedValue::WriteProto<proto::pbzero::MessageType>()
method, which can be used to write structured proto inside TracedValue.

Also TracedProto now gets an implicit constructor from TracedValue,
which means that if a C++ class implements
Foo::WriteIntoTrace(TracedProto<...>) method, it can be used in all
places where a class implementing Foo::WriteIntoTrace(TracedValue) can
be used, including:
- being passed as an untyped argument to TRACE_EVENT:
  TRACE_EVENT(..., "arg", Foo());
- being passed to TracedDictionary::Add / TracedArray::Append.

This patch also adds MessageType::GetName() method to the protozero
bindings, which is needed for implementation of WriteProto method.

R=eseckler@google.com,skyostil@google.com
CC=​primiano@google.com
Bug: b/184558843

Change-Id: Ibe75be0943557d841edc03af5868b3b3999b8a7c
13 files changed
tree: 7eec9a7d20256d4eb93bf0f53e17720c426daed2
  1. .github/
  2. bazel/
  3. build_overrides/
  4. buildtools/
  5. debian/
  6. docs/
  7. examples/
  8. gn/
  9. include/
  10. infra/
  11. protos/
  12. python/
  13. src/
  14. test/
  15. tools/
  16. ui/
  17. .clang-format
  18. .clang-tidy
  19. .gitattributes
  20. .gitignore
  21. .gn
  22. .style.yapf
  23. Android.bp
  24. Android.bp.extras
  25. BUILD
  26. BUILD.extras
  27. BUILD.gn
  28. CHANGELOG
  29. codereview.settings
  30. DIR_METADATA
  31. heapprofd.rc
  32. LICENSE
  33. meson.build
  34. METADATA
  35. MODULE_LICENSE_APACHE2
  36. OWNERS
  37. perfetto.rc
  38. PerfettoIntegrationTests.xml
  39. PRESUBMIT.py
  40. README.chromium
  41. README.md
  42. TEST_MAPPING
  43. traced_perf.rc
  44. WORKSPACE
README.md

Perfetto - System profiling, app tracing and trace analysis

Perfetto is a production-grade open-source stack for performance instrumentation and trace analysis. It offers services and libraries and for recording system-level and app-level traces, native + java heap profiling, a library for analyzing traces using SQL and a web-based UI to visualize and explore multi-GB traces.

See https://perfetto.dev/docs or the /docs/ directory for documentation.