From 921e9432a1461bbf312c9c6dcc2b916be6c05fa0 Mon Sep 17 00:00:00 2001 From: Antoine Pitrou Date: Tue, 7 Nov 2017 17:23:29 +0100 Subject: bpo-31970: Reduce performance overhead of asyncio debug mode. (#4314) * bpo-31970: Reduce performance overhead of asyncio debug mode. --- Lib/asyncio/coroutines.py | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'Lib/asyncio/coroutines.py') diff --git a/Lib/asyncio/coroutines.py b/Lib/asyncio/coroutines.py index b2adaadfc2..520a309f84 100644 --- a/Lib/asyncio/coroutines.py +++ b/Lib/asyncio/coroutines.py @@ -10,6 +10,7 @@ import traceback import types from . import compat +from . import constants from . import events from . import base_futures from .log import logger @@ -91,7 +92,7 @@ class CoroWrapper: assert inspect.isgenerator(gen) or inspect.iscoroutine(gen), gen self.gen = gen self.func = func # Used to unwrap @coroutine decorator - self._source_traceback = traceback.extract_stack(sys._getframe(1)) + self._source_traceback = events.extract_stack(sys._getframe(1)) self.__name__ = getattr(gen, '__name__', None) self.__qualname__ = getattr(gen, '__qualname__', None) @@ -183,8 +184,9 @@ class CoroWrapper: tb = getattr(self, '_source_traceback', ()) if tb: tb = ''.join(traceback.format_list(tb)) - msg += ('\nCoroutine object created at ' - '(most recent call last):\n') + msg += (f'\nCoroutine object created at ' + f'(most recent call last, truncated to ' + f'{constants.DEBUG_STACK_DEPTH} last lines):\n') msg += tb.rstrip() logger.error(msg) -- cgit v1.2.1