[Python-checkins] bpo-33792: Add selector and proactor windows policies (GH-7487)
Yury Selivanov
webhook-mailer at python.org
Thu Jun 7 20:45:00 EDT 2018
https://github.com/python/cpython/commit/8f4042964d5b0ddf5cdf87862db962ba64e3f64a
commit: 8f4042964d5b0ddf5cdf87862db962ba64e3f64a
branch: master
author: Yury Selivanov <yury at magic.io>
committer: GitHub <noreply at github.com>
date: 2018-06-07T20:44:57-04:00
summary:
bpo-33792: Add selector and proactor windows policies (GH-7487)
files:
A Misc/NEWS.d/next/Library/2018-06-07-12-38-12.bpo-33792.3aKG7u.rst
M Doc/whatsnew/3.7.rst
M Lib/asyncio/windows_events.py
M Lib/test/test_asyncio/test_windows_events.py
diff --git a/Doc/whatsnew/3.7.rst b/Doc/whatsnew/3.7.rst
index 3fe909ee978c..9a6f542ec479 100644
--- a/Doc/whatsnew/3.7.rst
+++ b/Doc/whatsnew/3.7.rst
@@ -733,6 +733,10 @@ include:
* Exceptions occurring in cancelled tasks are no longer logged.
(Contributed by Yury Selivanov in :issue:`30508`.)
+* New ``WindowsSelectorEventLoopPolicy`` and
+ ``WindowsProactorEventLoopPolicy`` classes.
+ (Contributed by Yury Selivanov in :issue:`33792`.)
+
Several ``asyncio`` APIs have been
:ref:`deprecated <whatsnew37-asyncio-deprecated>`.
diff --git a/Lib/asyncio/windows_events.py b/Lib/asyncio/windows_events.py
index d22edec51efc..2ec542764375 100644
--- a/Lib/asyncio/windows_events.py
+++ b/Lib/asyncio/windows_events.py
@@ -21,7 +21,8 @@
__all__ = (
'SelectorEventLoop', 'ProactorEventLoop', 'IocpProactor',
- 'DefaultEventLoopPolicy',
+ 'DefaultEventLoopPolicy', 'WindowsSelectorEventLoopPolicy',
+ 'WindowsProactorEventLoopPolicy',
)
@@ -801,8 +802,12 @@ def callback(f):
SelectorEventLoop = _WindowsSelectorEventLoop
-class _WindowsDefaultEventLoopPolicy(events.BaseDefaultEventLoopPolicy):
+class WindowsSelectorEventLoopPolicy(events.BaseDefaultEventLoopPolicy):
_loop_factory = SelectorEventLoop
-DefaultEventLoopPolicy = _WindowsDefaultEventLoopPolicy
+class WindowsProactorEventLoopPolicy(events.BaseDefaultEventLoopPolicy):
+ _loop_factory = ProactorEventLoop
+
+
+DefaultEventLoopPolicy = WindowsSelectorEventLoopPolicy
diff --git a/Lib/test/test_asyncio/test_windows_events.py b/Lib/test/test_asyncio/test_windows_events.py
index f92911ea3ba2..8f4c50e2c92b 100644
--- a/Lib/test/test_asyncio/test_windows_events.py
+++ b/Lib/test/test_asyncio/test_windows_events.py
@@ -166,5 +166,36 @@ def test_wait_for_handle_cancel(self):
fut.cancel()
+class WinPolicyTests(test_utils.TestCase):
+
+ def test_selector_win_policy(self):
+ async def main():
+ self.assertIsInstance(
+ asyncio.get_running_loop(),
+ asyncio.SelectorEventLoop)
+
+ old_policy = asyncio.get_event_loop_policy()
+ try:
+ asyncio.set_event_loop_policy(
+ asyncio.WindowsSelectorEventLoopPolicy())
+ asyncio.run(main())
+ finally:
+ asyncio.set_event_loop_policy(old_policy)
+
+ def test_proactor_win_policy(self):
+ async def main():
+ self.assertIsInstance(
+ asyncio.get_running_loop(),
+ asyncio.ProactorEventLoop)
+
+ old_policy = asyncio.get_event_loop_policy()
+ try:
+ asyncio.set_event_loop_policy(
+ asyncio.WindowsProactorEventLoopPolicy())
+ asyncio.run(main())
+ finally:
+ asyncio.set_event_loop_policy(old_policy)
+
+
if __name__ == '__main__':
unittest.main()
diff --git a/Misc/NEWS.d/next/Library/2018-06-07-12-38-12.bpo-33792.3aKG7u.rst b/Misc/NEWS.d/next/Library/2018-06-07-12-38-12.bpo-33792.3aKG7u.rst
new file mode 100644
index 000000000000..8c01764bc682
--- /dev/null
+++ b/Misc/NEWS.d/next/Library/2018-06-07-12-38-12.bpo-33792.3aKG7u.rst
@@ -0,0 +1,2 @@
+Add asyncio.WindowsSelectorEventLoopPolicy and
+asyncio.WindowsProactorEventLoopPolicy.
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