UI: fix exceptions when only thread info is avilable

Fixes a crash in the UI that happens when recording
a trace with only sched_switch and no process association.
There were two problems here:
1) The controller was partly lying on the thread info,
   providing a proc name == thread name, but NULL proc id.
2) The frontend should be robust to deal with thread info
   that don't have any matching process info.

Test:  http://localhost:3002#!/?s=2efeb0931cd8c808ca4f62a2b81d6cfdcd573d2e5e9b4462ddf3974bf36cc
Change-Id: I4a3b6a4de8af80847f2d2f11d3d9e9aab481c784
2 files changed
tree: a61396a86671ab6fb25ac41486bae223764ccf55
  1. build_overrides/
  2. buildtools/
  3. debian/
  4. docs/
  5. gn/
  6. include/
  7. infra/
  8. protos/
  9. src/
  10. test/
  11. tools/
  12. ui/
  13. .clang-format
  14. .gitignore
  15. .gn
  16. .travis.yml
  17. Android.bp
  18. Android.bp.extras
  19. BUILD.gn
  20. codereview.settings
  21. heapprofd.rc
  22. MODULE_LICENSE_APACHE2
  23. NOTICE
  24. OWNERS
  25. perfetto.rc
  26. PRESUBMIT.py
  27. README.chromium
  28. README.md
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.