sync: switch network fetch to multiprocessing

This avoids GIL limitations with using threads for parallel processing.

This reworks the fetch logic to return results for processing in the
main thread instead of leaving every thread to do its own processing.

We have to tweak the chunking logic a little here because multiprocessing
favors batching over returning immediate results when using a larger value
for chunksize.  When a single job can be quite slow, this tradeoff is not
good UX.

Bug: https://crbug.com/gerrit/12389
Change-Id: I0f0512d15ad7332d1eb28aff52c29d378acc9e1d
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/298642
Reviewed-by: Chris Mcdonald <cjmcdonald@google.com>
Tested-by: Mike Frysinger <vapier@google.com>
2 files changed
tree: ae532bceade00e3509c8fb59026c056e0f49b7c9
  1. .flake8
  2. .gitattributes
  3. .github/
  4. .gitignore
  5. .mailmap
  6. .project
  7. .pydevproject
  8. LICENSE
  9. MANIFEST.in
  10. README.md
  11. SUBMITTING_PATCHES.md
  12. color.py
  13. command.py
  14. completion.bash
  15. docs/
  16. editor.py
  17. error.py
  18. event_log.py
  19. git_command.py
  20. git_config.py
  21. git_refs.py
  22. git_ssh
  23. git_superproject.py
  24. git_trace2_event_log.py
  25. gitc_utils.py
  26. hooks.py
  27. hooks/
  28. main.py
  29. manifest_xml.py
  30. pager.py
  31. platform_utils.py
  32. platform_utils_win32.py
  33. progress.py
  34. project.py
  35. release/
  36. repo
  37. repo_trace.py
  38. requirements.json
  39. run_tests
  40. setup.py
  41. subcmds/
  42. tests/
  43. tox.ini
  44. wrapper.py
README.md

repo

Repo is a tool built on top of Git. Repo helps manage many Git repositories, does the uploads to revision control systems, and automates parts of the development workflow. Repo is not meant to replace Git, only to make it easier to work with Git. The repo command is an executable Python script that you can put anywhere in your path.

Contact

Please use the repo-discuss mailing list or issue tracker for questions.

You can file a new bug report under the “repo” component.

Please do not e-mail individual developers for support. They do not have the bandwidth for it, and often times questions have already been asked on repo-discuss or bugs posted to the issue tracker. So please search those sites first.

Install

Many distros include repo, so you might be able to install from there.

# Debian/Ubuntu.
$ sudo apt-get install repo

# Gentoo.
$ sudo emerge dev-vcs/repo

You can install it manually as well as it's a single script.

$ mkdir -p ~/.bin
$ PATH="${HOME}/.bin:${PATH}"
$ curl https://storage.googleapis.com/git-repo-downloads/repo > ~/.bin/repo
$ chmod a+rx ~/.bin/repo