Kyle Stanley 0ca7cc7fc0 bpo-38356: Fix ThreadedChildWatcher thread leak in test_asyncio (GH-16552) ...

Motivation for this PR (comment from @vstinner in bpo issue):
```
Warning seen o AMD64 Ubuntu Shared 3.x buildbot:
https://buildbot.python.org/all/#/builders/141/builds/2593

test_devnull_output (test.test_a=syncio.test_subprocess.SubprocessThreadedWatcherTests) ...
Warning -- threading_cleanup() failed to cleanup 1 threads (count: 1, dangling: 2)
```
The following implementation details for the new method are TBD:

1) Public vs private

2) Inclusion in `close()`

3) Name

4) Coroutine vs subroutine method

5) *timeout* parameter

If it's a private method, 3, 4, and 5 are significantly less important.

I started with the most minimal implementation that fixes the dangling threads without modifying the regression tests, which I think is particularly important. I typically try to avoid directly modifying existing tests as much as possible unless it's necessary to do so. However, I am open to changing any part of this.


https://bugs.python.org/issue38356

2020-01-12 03:02:50 -08:00

..

__init__.py

bpo-38242: Revert "bpo-36889: Merge asyncio streams (GH-13251)" (#16482)

2019-09-29 21:59:55 -07:00

__main__.py

bpo-37028: asyncio REPL; activated via 'python -m asyncio'. (GH-13472)

2019-05-27 13:42:29 +02:00

base_events.py

bpo-39191: Fix RuntimeWarning in asyncio test (GH-17863)

2020-01-07 05:23:01 -08:00

base_futures.py

bpo-34622: Extract asyncio exceptions into a separate module (GH-9141)

2018-09-11 10:13:04 -07:00

base_subprocess.py

bpo-32528: Make asyncio.CancelledError a BaseException. (GH-13528)

2019-05-27 14:45:12 +02:00

base_tasks.py

bpo-34270: Make it possible to name asyncio tasks (GH-8547)

2018-08-08 17:06:47 -04:00

constants.py

…

coroutines.py

bpo-36921: Deprecate @coroutine for sake of async def (GH-13346)

2019-05-16 07:52:10 -07:00

events.py

bpo-38951: Use threading.main_thread() check in asyncio (GH-17433)

2019-12-05 04:40:12 -08:00

exceptions.py

bpo-32528: Make asyncio.CancelledError a BaseException. (GH-13528)

2019-05-27 14:45:12 +02:00

format_helpers.py

…

futures.py

bpo-38978: Implement __class_getitem__ for asyncio objects (GH-17491)

2019-12-07 03:05:07 -08:00

locks.py

bpo-36373: Fix deprecation warnings (GH-15889)

2019-09-11 01:20:24 -07:00

log.py

…

proactor_events.py

Remove binding of captured exceptions when not used to reduce the chances of creating cycles (GH-17246)

2019-11-19 21:34:03 +00:00

protocols.py

bpo-35394: Add empty slots to abstract asyncio protocols (#10889)

2018-12-11 19:07:05 +02:00

queues.py

bpo-38978: Implement __class_getitem__ for asyncio objects (GH-17491)

2019-12-07 03:05:07 -08:00

runners.py

Fix and improve asyncio.run() docs (GH-16403)

2019-09-30 17:12:21 -07:00

selector_events.py

bpo-39006: Fix asyncio when the ssl module is missing (GH-17524)

2019-12-09 15:02:03 +01:00

sslproto.py

bpo-37035: Don't log OSError (GH-13548)

2019-05-27 06:28:34 -07:00

staggered.py

Fix import path for asyncio.TimeoutError (#17691)

2019-12-24 12:46:42 +02:00

streams.py

bpo-38529: Fix asyncio stream warning (GH-17474)

2019-12-07 13:22:00 +02:00

subprocess.py

bpo-38242: Revert "bpo-36889: Merge asyncio streams (GH-13251)" (#16482)

2019-09-29 21:59:55 -07:00

tasks.py

bpo-34790: Implement deprecation of passing coroutines to asyncio.wait() (GH-16977)

2019-12-30 13:50:19 +02:00

transports.py

bpo-38148: Add slots to asyncio transports (GH-16077)

2019-09-13 15:18:46 +03:00

trsock.py

bpo-37027: Return a proxy socket object from transp.get_extra_info('socket') (GH-13530)

2019-05-27 06:57:19 -07:00

unix_events.py

bpo-38356: Fix ThreadedChildWatcher thread leak in test_asyncio (GH-16552)

2020-01-12 03:02:50 -08:00

windows_events.py

bpo-29883: Asyncio proactor udp (GH-13440)

2019-05-28 02:52:15 -07:00

windows_utils.py

asyncio: __del__() keep reference to warnings.warn (GH-11491)

2019-01-10 11:24:40 +01:00