Reland "[heap] Optimize ArrayBuffer tracking"

With the current approach we only need to track using an unordered set as we can
still access the backing store pointer and length by the time we free the
backing store.

Reland:
The issue was fixed in 67b5a501db179412479e827e51c43515e4196b27.

BUG=chromium:619491, chromium:611688
LOG=N
R=ulan@chromium.org

This reverts commit 0e1eaec71d5c6d05169308a71eaa51571e7c4f70.

Review-Url: https://codereview.chromium.org/2109913003
Cr-Commit-Position: refs/heads/master@{#37399}
3 files changed
tree: 65ce57cad6adbe464c94daad3e28543020e7a951
  1. benchmarks/
  2. build_overrides/
  3. docs/
  4. gni/
  5. gypfiles/
  6. include/
  7. infra/
  8. samples/
  9. src/
  10. test/
  11. testing/
  12. third_party/
  13. tools/
  14. .clang-format
  15. .gitignore
  16. .gn
  17. .ycm_extra_conf.py
  18. AUTHORS
  19. BUILD.gn
  20. ChangeLog
  21. CODE_OF_CONDUCT.md
  22. codereview.settings
  23. DEPS
  24. LICENSE
  25. LICENSE.fdlibm
  26. LICENSE.strongtalk
  27. LICENSE.v8
  28. LICENSE.valgrind
  29. Makefile
  30. Makefile.android
  31. Makefile.nacl
  32. OWNERS
  33. PRESUBMIT.py
  34. README.md
  35. snapshot_toolchain.gni
  36. WATCHLISTS
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://github.com/v8/v8/wiki

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 on the V8 wiki.