Minor cleanups in preparation of protobuf -> zero migration

This CL puts together some minor cleanups and fixes.
This is to make next CLs easier to reason about.
Notable changes:
 - Fix a bug in protozero about casing of gen fields
   (rare, affects only fields named_LIKE_this)
 - Add zig-zag decoder + as_sint32/64 methods + tests.
 - Move away from msg_case() for one-of deecoding and instead
   use has_field_name() pattern. The semantic is the same.
   The protozero .gen.cc classes support only has_xxx.
 - Move the test messages int the protozero.test.protos
   namespace. This makes it easier to deal with namespaces
   in the (short) transition period when we'll have:
   (1) .pbzero.h (2) .gen.h and (3) .pb.h generated classes.

Bug: 132880619
Test: perfetto_unittests
Change-Id: I3d5a58ae36230240ab11cb5b558a3c2be0db7313
27 files changed
tree: 6bbfa63bd8834e955f0856508e9f9e574fd3aca6
  1. bazel/
  2. build_overrides/
  3. buildtools/
  4. debian/
  5. docs/
  6. gn/
  7. include/
  8. infra/
  9. protos/
  10. src/
  11. test/
  12. tools/
  13. ui/
  14. .clang-format
  15. .gitignore
  16. .gn
  17. .style.yapf
  18. Android.bp
  19. Android.bp.extras
  20. BUILD
  21. BUILD.extras
  22. BUILD.gn
  23. codereview.settings
  24. heapprofd.rc
  25. MODULE_LICENSE_APACHE2
  26. NOTICE
  27. OWNERS
  28. perfetto.rc
  29. PRESUBMIT.py
  30. README.chromium
  31. README.md
  32. TEST_MAPPING
  33. WORKSPACE
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.

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