traverseda
/
cpython
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

bpo-33505: Optimize asyncio.ensure_future by reordering if conditions (GH-6836) (#7162) 

(cherry picked from commit e549c4be5f)

Co-authored-by: jimmylai <albert_chs@yahoo.com.tw>
This commit is contained in:
Miss Islington (bot) 2018-05-28 11:42:50 -07:00 committed by Yury Selivanov
parent 1f21ae710d
commit f8fdb368e3
2 changed files with 6 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
Lib/asyncio/tasks.py
View File

@ -542,17 +542,17 @@ def ensure_future(coro_or_future, *, loop=None):
If the argument is a Future, it is returned directly.
"""
if futures.isfuture(coro_or_future):
if loop is not None and loop is not futures._get_loop(coro_or_future):
raise ValueError('loop argument must agree with Future')
return coro_or_future
elif coroutines.iscoroutine(coro_or_future):
if coroutines.iscoroutine(coro_or_future):
if loop is None:
loop = events.get_event_loop()
task = loop.create_task(coro_or_future)
if task._source_traceback:
del task._source_traceback[-1]
return task
elif futures.isfuture(coro_or_future):
if loop is not None and loop is not futures._get_loop(coro_or_future):
raise ValueError('loop argument must agree with Future')
return coro_or_future
elif inspect.isawaitable(coro_or_future):
return ensure_future(_wrap_awaitable(coro_or_future), loop=loop)
else:

1
Misc/NEWS.d/next/Library/2018-05-14-18-05-35.bpo-33505.L8pAyt.rst Normal file
View File

@ -0,0 +1 @@
Optimize asyncio.ensure_future() by reordering if checks: 1.17x faster.