[tracing] Roll perfetto

Roll perfetto to get the fix for a TSAN race.

We need to override a new method on the producer, ClearIncrementalState.
It is only called if the producer opts into it, which we do not so we
add UNREACHABLE() in the implementation.

Cq-Include-Trybots: luci.v8.try:v8_linux64_perfetto_dbg_ng
Bug: v8:8339
Change-Id: I782989f32b511e98479f6637148e3bdd78a6578a
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1615461
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Commit-Queue: Peter Marshall <petermarshall@chromium.org>
Cr-Commit-Position: refs/heads/master@{#61584}
2 files changed
tree: 376b80054897296c6c574a87079178c475201e98
  1. .clang-format
  2. .clang-tidy
  3. .editorconfig
  4. .git-blame-ignore-revs
  5. .gitattributes
  6. .gitignore
  7. .gn
  8. .vpython
  9. .ycm_extra_conf.py
  10. AUTHORS
  11. BUILD.gn
  12. CODE_OF_CONDUCT.md
  13. ChangeLog
  14. DEPS
  15. ENG_REVIEW_OWNERS
  16. INFRA_OWNERS
  17. LICENSE
  18. LICENSE.fdlibm
  19. LICENSE.strongtalk
  20. LICENSE.v8
  21. LICENSE.valgrind
  22. OWNERS
  23. PRESUBMIT.py
  24. README.md
  25. WATCHLISTS
  26. benchmarks/
  27. build_overrides/
  28. codereview.settings
  29. custom_deps/
  30. docs/
  31. gni/
  32. include/
  33. infra/
  34. samples/
  35. snapshot_toolchain.gni
  36. src/
  37. test/
  38. testing/
  39. third_party/
  40. tools/
README.md

V8 JavaScript Engine

V8 is Google's open source JavaScript engine.

V8 implements ECMAScript as specified in ECMA-262.

V8 is written in C++ and is used in Google Chrome, the open source browser from Google.

V8 can run standalone, or can be embedded into any C++ application.

V8 Project page: https://v8.dev/docs

Getting the Code

Checkout depot tools, and run

    fetch v8

This will checkout V8 into the directory v8 and fetch all of its dependencies. To stay up to date, run

    git pull origin
    gclient sync

For fetching all branches, add the following into your remote configuration in .git/config:

    fetch = +refs/branch-heads/*:refs/remotes/branch-heads/*
    fetch = +refs/tags/*:refs/tags/*

Contributing

Please follow the instructions mentioned at v8.dev/docs/contribute.