Asyncio watcher 'MultiLoopChildWatcher' currently doesn't work well
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on Solaris and can freeze the event loop indefinitely.
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This was reported upstream:
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https://bugs.python.org/issue37573
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--- Python-3.9.0/Lib/asyncio/unix_events.py
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+++ Python-3.9.0/Lib/asyncio/unix_events.py
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@@ -30,7 +30,7 @@ __all__ = (
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'SelectorEventLoop',
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'AbstractChildWatcher', 'SafeChildWatcher',
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'FastChildWatcher', 'PidfdChildWatcher',
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- 'MultiLoopChildWatcher', 'ThreadedChildWatcher',
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+ 'ThreadedChildWatcher',
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'DefaultEventLoopPolicy',
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)
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--- cpython-master/Lib/test/test_asyncio/test_subprocess.py
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+++ cpython-master/Lib/test/test_asyncio/test_subprocess.py
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@@ -684,11 +684,6 @@ if sys.platform != 'win32':
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Watcher = unix_events.ThreadedChildWatcher
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- class SubprocessMultiLoopWatcherTests(SubprocessWatcherMixin,
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- test_utils.TestCase):
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-
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- Watcher = unix_events.MultiLoopChildWatcher
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-
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class SubprocessSafeWatcherTests(SubprocessWatcherMixin,
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test_utils.TestCase):
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