[New-bugs-announce] [issue7222] thread reaping is imperfect

[Antoine Pitrou]

New submission from Antoine Pitrou <pitrou at free.fr>:

Thread reaping in test_support is imperfect because, even when a thread
has a disappeared from _active and _limbo, the Thread object might still
be hanging somewhere in memory (leaving its last instants). This problem
manifests itself when trying to fix the transient refleaks in
test_socketserver.

One solution I've found is to add a _count() method to the thread
module, which returns the number of running threads from the point of
view of the C extension. When _count() is decremented, we can be sure
the Python method has finished running and the Thread object is not
hanging around.

----------
components: Tests
files: threading_setup.patch
keywords: patch
messages: 94582
nosy: nnorwitz, pitrou, r.david.murray
priority: normal
severity: normal
stage: patch review
status: open
title: thread reaping is imperfect
type: behavior
versions: Python 2.7, Python 3.2
Added file: http://bugs.python.org/file15215/threading_setup.patch

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