[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[STINNER Victor]

STINNER Victor added the comment:

The Python 2.7 change caused a regression in Sphinx: bpo-31016.

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versions: +Python 2.7

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[STINNER Victor]

STINNER Victor added the comment:


New changeset 12536bd261ba95cd2748f3d7d47768742a6ffa7a by Victor Stinner 
(Antoine Pitrou) in branch '2.7':
[2.7] Clear potential ref cycle between Process and Process target (GH-2470) 
(#2473)
https://github.com/python/cpython/commit/12536bd261ba95cd2748f3d7d47768742a6ffa7a


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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Antoine Pitrou added the comment:


New changeset a9705b777859f555d50eb5dcd5fc4260c42a0188 by Antoine Pitrou in 
branch '3.5':
[3.5] Clear potential ref cycle between Process and Process target (GH-2470) 
(#2472)
https://github.com/python/cpython/commit/a9705b777859f555d50eb5dcd5fc4260c42a0188


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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Antoine Pitrou added the comment:


New changeset 38d6a40898940d2c62c637fcc8acce05e75de5c2 by Antoine Pitrou in 
branch '3.6':
[3.6] Clear potential ref cycle between Process and Process target (GH-2470) 
(#2471)
https://github.com/python/cpython/commit/38d6a40898940d2c62c637fcc8acce05e75de5c2


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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Changes by Antoine Pitrou :


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pull_requests: +2528

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Changes by Antoine Pitrou :


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pull_requests: +2527

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Changes by Antoine Pitrou :


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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[STINNER Victor]

STINNER Victor added the comment:


New changeset 79d37ae979a65ada0b2ac820279ccc3b1cd41ba6 by Victor Stinner 
(Antoine Pitrou) in branch 'master':
Clear potential ref cycle between Process and Process target (#2470)
https://github.com/python/cpython/commit/79d37ae979a65ada0b2ac820279ccc3b1cd41ba6


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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Changes by Antoine Pitrou :


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pull_requests: +2525

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Changes by Antoine Pitrou :


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stage: commit review -> resolved
status: open -> closed

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[STINNER Victor]

STINNER Victor added the comment:


New changeset f15bf1f3f3104f6ab2229e4b359984489a74685b by Victor Stinner 
(Antoine Pitrou) in branch '3.5':
[3.5] bpo-30775: Fix refleaks in test_multiprocessing (GH-2467) (#2469)
https://github.com/python/cpython/commit/f15bf1f3f3104f6ab2229e4b359984489a74685b


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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Antoine Pitrou added the comment:


New changeset e022aad73a4151b5628e2476a8465ce6c0d18b8c by Antoine Pitrou in 
branch '3.6':
[3.6] bpo-30775: Fix refleaks in test_multiprocessing (GH-2467) (#2468)
https://github.com/python/cpython/commit/e022aad73a4151b5628e2476a8465ce6c0d18b8c


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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Changes by Antoine Pitrou :


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resolution:  -> fixed
stage:  -> commit review
status: open -> pending

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Changes by Antoine Pitrou :


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pull_requests: +2523

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Changes by Antoine Pitrou :


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pull_requests: +2524

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[STINNER Victor]

STINNER Victor added the comment:

Hey, thank you Antoine for fixing the last known reference leak!

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[STINNER Victor]

STINNER Victor added the comment:


New changeset a79f8faccf5e26f55e8b9496ad49d2071b5e299c by Victor Stinner 
(Antoine Pitrou) in branch 'master':
bpo-30775: Fix refleaks in test_multiprocessing (#2467)
https://github.com/python/cpython/commit/a79f8faccf5e26f55e8b9496ad49d2071b5e299c


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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Changes by Antoine Pitrou :


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pull_requests: +2521

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[STINNER Victor]

STINNER Victor added the comment:

> Is it test_finalize or test_barrier?

Try yourself: it only leaks when you run both :-)

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[Antoine Pitrou]

Antoine Pitrou added the comment:

Is it test_finalize or test_barrier?

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[STINNER Victor]

Changes by STINNER Victor :


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nosy: +davin, pitrou

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[STINNER Victor]

STINNER Victor added the comment:

The first message was on Python 3.6. On master, regrtest sees even more kinds 
of leaks: references, memory blocks and file descriptors.

haypo@selma$ ./python -m test 
--match=test.test_multiprocessing_forkserver.WithProcessesTestBarrier.test_barrier
 
--match=test.test_multiprocessing_forkserver.WithProcessesTestFinalize.test_finalize
 -R 3:3 test_multiprocessing_forkserver 
Run tests sequentially
0:00:00 load avg: 0.25 [1/1] test_multiprocessing_forkserver
beginning 6 repetitions
123456
..
test_multiprocessing_forkserver leaked [492, 492, 492] references, sum=1476
test_multiprocessing_forkserver leaked [221, 222, 225] memory blocks, sum=668
test_multiprocessing_forkserver leaked [4, 4, 4] file descriptors, sum=12
test_multiprocessing_forkserver failed

1 test failed:
test_multiprocessing_forkserver

Total duration: 5 sec
Tests result: FAILURE

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[STINNER Victor]

STINNER Victor added the comment:

test_multiprocessing_spawn doesn't leak:

haypo@selma$ ./python -m test 
--match=test.test_multiprocessing_spawn.WithProcessesTestBarrier.test_barrier 
--match=test.test_multiprocessing_spawn.WithProcessesTestFinalize.test_finalize 
-R 3:3 test_multiprocessing_spawn
Run tests sequentially
0:00:00 load avg: 0.11 [1/1] test_multiprocessing_spawn
beginning 6 repetitions
123456
..
1 test OK.

Total duration: 10 sec
Tests result: SUCCESS

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[issue30775] test_multiprocessing_forkserver leaks references on Python 3

[STINNER Victor]

Changes by STINNER Victor :


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title: [3.6] test_multiprocessing_forkserver leaks references on Python 3.6 -> 
test_multiprocessing_forkserver leaks references on Python 3
versions: +Python 3.5, Python 3.7

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