[Python-checkins] cpython (merge 3.6 -> default): Merge (asyncio)
yury.selivanov
python-checkins at python.org
Thu Sep 15 13:27:47 EDT 2016
https://hg.python.org/cpython/rev/7d73f6849414
changeset: 103816:7d73f6849414
parent: 103813:5e540b9648c0
parent: 103815:4333047bbefa
user: Yury Selivanov <yury at magic.io>
date: Thu Sep 15 13:24:22 2016 -0400
summary:
Merge (asyncio)
files:
Lib/asyncio/base_events.py | 24 ++++++++++++++++--------
1 files changed, 16 insertions(+), 8 deletions(-)
diff --git a/Lib/asyncio/base_events.py b/Lib/asyncio/base_events.py
--- a/Lib/asyncio/base_events.py
+++ b/Lib/asyncio/base_events.py
@@ -242,9 +242,13 @@
self._task_factory = None
self._coroutine_wrapper_set = False
- # A weak set of all asynchronous generators that are being iterated
- # by the loop.
- self._asyncgens = weakref.WeakSet()
+ if hasattr(sys, 'get_asyncgen_hooks'):
+ # Python >= 3.6
+ # A weak set of all asynchronous generators that are
+ # being iterated by the loop.
+ self._asyncgens = weakref.WeakSet()
+ else:
+ self._asyncgens = None
# Set to True when `loop.shutdown_asyncgens` is called.
self._asyncgens_shutdown_called = False
@@ -359,7 +363,9 @@
"""Shutdown all active asynchronous generators."""
self._asyncgens_shutdown_called = True
- if not len(self._asyncgens):
+ if self._asyncgens is None or not len(self._asyncgens):
+ # If Python version is <3.6 or we don't have any asynchronous
+ # generators alive.
return
closing_agens = list(self._asyncgens)
@@ -387,9 +393,10 @@
raise RuntimeError('Event loop is running.')
self._set_coroutine_wrapper(self._debug)
self._thread_id = threading.get_ident()
- old_agen_hooks = sys.get_asyncgen_hooks()
- sys.set_asyncgen_hooks(firstiter=self._asyncgen_firstiter_hook,
- finalizer=self._asyncgen_finalizer_hook)
+ if self._asyncgens is not None:
+ old_agen_hooks = sys.get_asyncgen_hooks()
+ sys.set_asyncgen_hooks(firstiter=self._asyncgen_firstiter_hook,
+ finalizer=self._asyncgen_finalizer_hook)
try:
while True:
self._run_once()
@@ -399,7 +406,8 @@
self._stopping = False
self._thread_id = None
self._set_coroutine_wrapper(False)
- sys.set_asyncgen_hooks(*old_agen_hooks)
+ if self._asyncgens is not None:
+ sys.set_asyncgen_hooks(*old_agen_hooks)
def run_until_complete(self, future):
"""Run until the Future is done.
--
Repository URL: https://hg.python.org/cpython
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