[Python-checkins] cpython: Issue #20505: add debug info

Fri Feb 7 17:57:59 CET 2014

http://hg.python.org/cpython/rev/3b94a4ef244e
changeset: 89015:3b94a4ef244e
user: Victor Stinner <victor.stinner at gmail.com>
date: Fri Feb 07 17:53:13 2014 +0100
summary:
 Issue #20505: add debug info
files:
 Lib/asyncio/base_events.py | 10 ++++++++++
 1 files changed, 10 insertions(+), 0 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
@@ -634,7 +634,17 @@
 else:
 logger.log(level, 'poll took %.3f seconds', t1-t0)
 else:
+ t0 = self.time()
 event_list = self._selector.select(timeout)
+ dt = self.time() - t0
+ if timeout and not event_list and dt < timeout:
+ print("%s.select(%.3f ms) took %.3f ms (granularity=%.3f ms, resolution=%.3f ms)"
+ % (self._selector.__class__.__name__,
+ timeout * 1e3,
+ dt * 1e3,
+ self._granularity * 1e3,
+ self._selector.resolution * 1e3),
+ file=sys.__stderr__)
 self._process_events(event_list)
 
 # Handle 'later' callbacks that are ready.
-- 
Repository URL: http://hg.python.org/cpython
