From: Yury Selivanov <yury@magic.io>
Date: Fri, 3 Mar 2017 04:57:33 +0000 (-0500)
Subject: asyncio: Optimize _get_running_loop() to call getpid() only when there's a loop
X-Git-Tag: v3.5.4rc1~312
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=80fbacc9369c07daeea6a50a61d214820bb29874;p=python

asyncio: Optimize _get_running_loop() to call getpid() only when there's a loop
---

diff --git a/Lib/asyncio/events.py b/Lib/asyncio/events.py
index 7b30b4c84a..e85634e588 100644
--- a/Lib/asyncio/events.py
+++ b/Lib/asyncio/events.py
@@ -624,8 +624,9 @@ def _get_running_loop():
     This is a low-level function intended to be used by event loops.
     This function is thread-specific.
     """
-    if _running_loop._pid == os.getpid():
-        return _running_loop._loop
+    running_loop = _running_loop._loop
+    if running_loop is not None and _running_loop._pid == os.getpid():
+        return running_loop
 
 
 def _set_running_loop(loop):