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flutter / third_party / perfetto / bb0e154023150a87068ea3c5172eb51afba95f0c
commitbb0e154023150a87068ea3c5172eb51afba95f0c[log] [tgz]
authorEric Seckler <eseckler@google.com>Thu Jan 16 13:44:13 2020 +0000
committerEric Seckler <eseckler@google.com>Thu Jan 16 13:44:13 2020 +0000
tree9f246104c9c1192d21c536f20346692b9b9f2a62
parent54280d3ec8f16f8f9eb2e086365ee7b4c3fe20cb [diff]
processor: Translate duplicate pids/tids during json export

The old trace viewer / TBMv2 can't handle it when there are multiple
"main" threads in the same process. It doesn't have the concept of
"pid/tid reuse", i.e. unique pids/tids, like trace processor.

Instead, we have to detect duplicate pids/tids when we export to json
and translate them to unique substitute values instead. This patch does
this by choosing unused values at the upper end of the uint32 space.

This patch also refactors ExportJson to use a helper object
(JsonExporter) to store some state.

Also updates thread/process name parsing in TrackEventParser to not set
thread/process names from UNSPECIFIED chrome types.

Bug: 130786269
Change-Id: I4b6ac5c7b892604e3fd4d3415bd239bd507df0fc
5 files changed
tree: 9f246104c9c1192d21c536f20346692b9b9f2a62
  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. 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.