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gerrit-public.fairphone.software / platform / external / perfetto / 395594902684774fa3c82110e8b72714e58e695b
commit395594902684774fa3c82110e8b72714e58e695b[log] [tgz]
authorEric Seckler <eseckler@google.com>Tue Mar 03 18:04:25 2020 +0000
committerEric Seckler <eseckler@google.com>Tue Mar 03 18:04:25 2020 +0000
tree4bdc622a74e7cb10c98258301d77f24cab1c7797
parente43a2a568976b495cbbb8d4ec8f89cc1563c5518 [diff]
protos: Add support for counters in TrackEvent

Adds a generic way to describe counter tracks and supply counter values
in TrackEvents.

We support two types of counters: built-in (e.g. thread time,
instruction count) and custom user-specified. Counter values can be
provided in separate TrackEvents of TYPE_COUNTER, or attached to other
slice-type TrackEvents (i.e. at beginning/end of a slice).
Delta-encoding of counter values is also supported.

This will enable us to support TRACE_COUNTER macros in the client
library as well as experiment with more per-event counters in Chrome
(see crrev.com/c/1940179 for related discussion about the latter).

Design doc:
https://docs.google.com/document/d/1yL-OIm6k7IyjZ9xWkwcyA1F_4i6_uJj63qmEVTWCg_U/edit?usp=sharing

Bug: 123864183
Change-Id: Icec416b8efbdd46b4bef04491c7a9bcfa74142f9
10 files changed
tree: 4bdc622a74e7cb10c98258301d77f24cab1c7797
  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. LICENSE
  26. MODULE_LICENSE_APACHE2
  27. NOTICE
  28. OWNERS
  29. perfetto.rc
  30. PRESUBMIT.py
  31. README.chromium
  32. README.md
  33. TEST_MAPPING
  34. traced_perf.rc
  35. 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.

Contributing

See /docs/contributing.md for instructions.

The source-of-truth repo is Android's Gerrit. The GitHub repo is a read-only mirror.

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.

Community

You can reach us on our Discord channel. If you prefer using IRC we have an experimental Discord <> IRC bridge synced with #perfetto-dev on Freenode.