Windows,client: extract embedded binaries faster

When extracting embedded binaries, the client now
caches which directories it has already created
and won't attempt creating them again.

This saves some time on Windows: from 16.3 sec on
average down to 13.2 sec. (n=10 runs, always
starting Bazel with a new --output_user_root and
shutting down afterwards.)

On Linux I see only a marginal speedup, not
significant enough to claim credit for it. :)

See https://github.com/bazelbuild/bazel/issues/5444

Closes #5448.

PiperOrigin-RevId: 201933181
1 file changed
tree: 476c881f074d9200ab28ab611fc41740525b2534
  1. .bazelci/
  2. examples/
  3. scripts/
  4. site/
  5. src/
  6. third_party/
  7. tools/
  8. .gitattributes
  9. .gitignore
  10. AUTHORS
  11. BUILD
  12. CHANGELOG.md
  13. combine_distfiles.py
  14. combine_distfiles_to_tar.sh
  15. compile.sh
  16. CONTRIBUTING.md
  17. CONTRIBUTORS
  18. distdir.bzl
  19. ISSUE_TEMPLATE.md
  20. LICENSE
  21. README.md
  22. WORKSPACE
README.md

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