Skip to content

Make sure retrieving _USE_VFORK can't fail #312

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 5 commits into from
Nov 19, 2025
Merged

Make sure retrieving _USE_VFORK can't fail #312

Changes from all commits
Commits
Show all changes
5 commits
Select commit Hold shift + click to select a range
4543f73
Make sure retrieving _USE_VFORK can't fail
nezgrath Nov 19, 2025
85ee920
Update binary.py
nezgrath Nov 19, 2025
4998769
Update binary.py
nezgrath Nov 19, 2025
21142cd
Update binary.py
nezgrath Nov 19, 2025
7512448
Code style fixes
nezgrath Nov 19, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 15 additions & 3 deletions src/ansys/hps/data_transfer/client/binary.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -73,19 +73,31 @@ def __init__(self):
"""Initialize the PrepareSubprocess class object."""
# Check if not Windows
self.disable_vfork = os.name != "nt" and platform.system() != "Windows"
self._orig_use_vfork = None
self._orig_use_pspawn = None

def __enter__(self):
"""Disable vfork and posix_spawn in subprocess."""
if self.disable_vfork:
if not self.disable_vfork:
return

if hasattr(subprocess, "_USE_VFORK"):
self._orig_use_vfork = subprocess._USE_VFORK
self._orig_use_pspawn = subprocess._USE_POSIX_SPAWN
subprocess._USE_VFORK = False

if hasattr(subprocess, "_USE_POSIX_SPAWN"):
self._orig_use_pspawn = getattr(subprocess, "_USE_POSIX_SPAWN", False)
subprocess._USE_POSIX_SPAWN = False

def __exit__(self, exc_type, exc_val, exc_tb):
"""Restore original values of _USE_VFORK and _USE_POSIX_SPAWN."""
if self.disable_vfork:
if not self.disable_vfork:
return

if self._orig_use_vfork is not None:
subprocess._USE_VFORK = self._orig_use_vfork

if self._orig_use_pspawn is not None:
subprocess._USE_POSIX_SPAWN = self._orig_use_pspawn


Expand Down