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flutter / third_party / perfetto / bab105a59ac8dc9c61e17bb7865777f14195d693
commitbab105a59ac8dc9c61e17bb7865777f14195d693[log] [tgz]
authorAnna Mayzner <mayzner@google.com>Mon Apr 17 06:10:26 2023 +0000
committerAnna Mayzner <mayzner@google.com>Mon Apr 17 06:10:26 2023 +0000
tree34adea30c9270006de30b1093943334a33d8129d
parent7c24af6f73e50d66dc0d9ac866fb4a4d788e8822 [diff]
tp: ClockConverter

To fix the bug we had to implement https://observablehq.com/d/2ba5ca5bbdebe9a9. To simplify the conversion, we implemented ClockConverter, which allows conversion using only data from TraceStorage, and not graphs from ClockTracker.
ClockConverter first fetches all of the snapshots related to the clocks used for conversion and then applies the algorithm from above link to convert trace time to clock values.

This enabled:
- deconstruction of ClockTracker with context in DestroyContext() which released some memory
- further simplification of ClockTracker, which no longer needs any logic related to FromTraceTime()

Bug: 271428674
Change-Id: Ie1404a51e0004519753bab1a727a65fb1dea4a33
20 files changed
tree: 34adea30c9270006de30b1093943334a33d8129d
  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. .git-blame-ignore-revs
  20. .gitattributes
  21. .gitignore
  22. .gn
  23. .style.yapf
  24. Android.bp
  25. Android.bp.extras
  26. BUILD
  27. BUILD.extras
  28. BUILD.gn
  29. CHANGELOG
  30. codereview.settings
  31. DIR_METADATA
  32. heapprofd.rc
  33. LICENSE
  34. meson.build
  35. METADATA
  36. MODULE_LICENSE_APACHE2
  37. OWNERS
  38. perfetto.rc
  39. PerfettoIntegrationTests.xml
  40. PRESUBMIT.py
  41. README.chromium
  42. README.md
  43. TEST_MAPPING
  44. traced_perf.rc
  45. 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.