Skip to content

gh-149879: Fix multiprocessing tests on Cygwin#150031

Merged
vstinner merged 2 commits into
python:mainfrom
vstinner:mp_cygwin2
May 18, 2026
Merged

gh-149879: Fix multiprocessing tests on Cygwin#150031
vstinner merged 2 commits into
python:mainfrom
vstinner:mp_cygwin2

Conversation

@vstinner
Copy link
Copy Markdown
Member

@vstinner vstinner commented May 18, 2026 •
edited by bedevere-app Bot
Loading

  • Disable AF_UNIX connection family on Cygwin.
  • forkserver start method is not available on Cygwin: update tests for that.

@vstinner
pythongh-149879: Fix multiprocessing tests on Cygwin
a1b3694 
* Disable AF_UNIX connection family on Cygwin.
* forkserver start method is not available on Cygwin: update tests
  for that.
@vstinner vstinner requested a review from gpshead as a code owner May 18, 2026 21:57
@bedevere-app bedevere-app Bot mentioned this pull request May 18, 2026
Open
@vstinner vstinner mentioned this pull request May 18, 2026
Closed
@vstinner
Copy link
Copy Markdown
Member Author

vstinner commented May 18, 2026

4 tests are still failing and require more investigation (they can be fixed in a separated PR):

test_multiprocessing_fork.test_processes
    test_wait_result
test_multiprocessing_spawn.test_processes
    test_wait_result
test_multiprocessing_fork.test_misc
    test_resource_tracker_sigterm
test_multiprocessing_spawn.test_misc
    test_resource_tracker_sigterm

The forkserver start method requires multiprocessing.reduction.HAVE_SEND_HANDLE which is False on Cygwin. Maybe we can support forkserver if the _winapi extension becomes available on Cygwin.

@vstinner vstinner requested a review from vsajip as a code owner May 18, 2026 22:12
@vstinner vstinner merged commit 9eb50a4 into python:main May 18, 2026
49 checks passed
@vstinner vstinner deleted the mp_cygwin2 branch May 18, 2026 22:45
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Reviewers

@gpshead gpshead Awaiting requested review from gpshead gpshead is a code owner

@vsajip vsajip Awaiting requested review from vsajip vsajip is a code owner

Assignees

No one assigned

Labels

skip news

Projects

None yet

Milestone

No milestone

Development

Successfully merging this pull request may close these issues.

1 participant

@vstinner