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flutter / third_party / perfetto / ee1648233f427cc5526481e1074a48bd77caa29e
commitee1648233f427cc5526481e1074a48bd77caa29e[log] [tgz]
authorMohit Saini <mohitms@google.com>Sun Sep 11 17:38:46 2022 +0100
committerMohit Saini <mohitms@google.com>Fri Sep 16 20:47:39 2022 +0100
tree226cf658b323101a1790341cf925a5fa58920791
parentcd3e2b402ea0b790022cf819eb6da4e188b7be93 [diff]
Add support for disallowing concurrent sessions

A custom data source class can have
`static constexpr bool kSupportsMultipleInstances = false;`
member to indicate its support for multiple instances. It is true by
default.

When this flag is false, we cannot have multiple instances of that data
sources. When a data source is already active and if we attempt
to start another instance of that data source (via another tracing
session), it will fail.

We have also added a flag named `support_concurrent_sessions` in
TracingInitArgs. It is true by default. When its is set to false,
it overrides `DataSource::kSupportsMultipleInstances` for all
the data sources.

Bug: b/245118150
Change-Id: I012a8bea0f29e50beb3ce7802d8873e5a0161e58
8 files changed
tree: 226cf658b323101a1790341cf925a5fa58920791
  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.