metatrace: remove memset and trivial-ctor assumption

Turns out that on MSVC std::atomic<int> is not trivially constructible
(although I think is still a plain old int, it just fails the check).
Fall back on resetting each element individually.
Thankfully the compiler can see through and eventually figures out
it can do a memset: https://godbolt.org/z/wMre8O

Bug: chromium:1010616
Change-Id: I971ff888306d6bdbaf6e6b886f9ca506ddc1b30a
2 files changed
tree: 1c11c3fbed1da6f3a2f9a3449306ea9e0b0f7e78
  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. Android.bp
  18. Android.bp.extras
  19. BUILD
  20. BUILD.extras
  21. BUILD.gn
  22. codereview.settings
  23. heapprofd.rc
  24. MODULE_LICENSE_APACHE2
  25. NOTICE
  26. OWNERS
  27. perfetto.rc
  28. PRESUBMIT.py
  29. README.chromium
  30. README.md
  31. TEST_MAPPING
  32. 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.

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.