Ignore zombie processes on termination (#118)

* Ignore zombie processes on termination Fixes #117 * Add CHANGELOG entry

Author: roehling

CHANGELOG.rst

@@ -1,3 +1,9 @@
+Upcoming
+--------
+
+- Ignore zombie processes which are erroneously considered alive with python 3.11
+ (`#117 <https://github.com/pytest-dev/pytest-xprocess/issues/117>`_)
+
 0.21.0 (2022-11-27)
 -------------------
 

xprocess/xprocess.py

@@ -83,11 +83,13 @@ def terminate(self, *, kill_proc_tree=True, timeout=20):
  for p in reversed(kill_list):
  self._signal_process(p, signal.SIGTERM)
  _, alive = psutil.wait_procs(kill_list, timeout=timeout)
+ alive = [a for a in alive if a.status() != psutil.STATUS_ZOMBIE]
 
  # forcefully terminate procs still running
  for p in alive:
  self._signal_process(p, signal.SIGKILL)
  _, alive = psutil.wait_procs(kill_list, timeout=timeout)
+ alive = [a for a in alive if a.status() != psutil.STATUS_ZOMBIE]
 
  # even if termination itself fails,
  # the signal has been sent to the process