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gevent 'BlockingSwitchOutError' exception after updating

See original GitHub issue

After updating VisualStudio to 15.9.4 yesterday, I’m experiencing an unhandled exception from gevent when I perform operations in my application:

 Traceback (most recent call last):
   File "c:\program files (x86)\microsoft visual studio\2017\professional\common7\ide\extensions\microsoft\python\core\Packages\ptvsd\_vendored\pydevd\_pydevd_bundle\pydevd_frame.py", line 649, in trace_dispatch
     self.do_wait_suspend(thread, frame, event, arg)
   File "c:\program files (x86)\microsoft visual studio\2017\professional\common7\ide\extensions\microsoft\python\core\Packages\ptvsd\_vendored\pydevd\_pydevd_bundle\pydevd_frame.py", line 134, in do_wait_suspend
     self._args[0].do_wait_suspend(*args, **kwargs)
   File "c:\program files (x86)\microsoft visual studio\2017\professional\common7\ide\extensions\microsoft\python\core\Packages\ptvsd\_vendored\pydevd\pydevd.py", line 821, in do_wait_suspend
     time.sleep(0.01)
   File "Q:\t8\tools\lang\python2.7\lib\site-packages\gevent\hub.py", line 159, in sleep
     hub.wait(t)
   File "src\gevent\_hub_primitives.py", line 46, in gevent.__hub_primitives.WaitOperationsGreenlet.wait
   File "src\gevent\_hub_primitives.py", line 55, in gevent.__hub_primitives.WaitOperationsGreenlet.wait
   File "src\gevent\_waiter.py", line 151, in gevent.__waiter.Waiter.get
   File "src\gevent\_greenlet_primitives.py", line 59, in gevent.__greenlet_primitives.SwitchOutGreenletWithLoop.switch
   File "src\gevent\_greenlet_primitives.py", line 59, in gevent.__greenlet_primitives.SwitchOutGreenletWithLoop.switch
   File "src\gevent\_greenlet_primitives.py", line 62, in gevent.__greenlet_primitives.SwitchOutGreenletWithLoop.switch
   File "src\gevent\_greenlet_primitives.py", line 65, in gevent.__greenlet_primitives.SwitchOutGreenletWithLoop.switch_out
   File "src\gevent\_greenlet_primitives.py", line 66, in gevent.__greenlet_primitives.SwitchOutGreenletWithLoop.switch_out
 BlockingSwitchOutError: Impossible to call blocking function in the event loop callback

Updating gevent & greenlet to the latest version doesn’t address the issue.

Issue Analytics

State:
Created 5 years ago
Comments:5 (3 by maintainers)

Top GitHub Comments

1reaction

huguesvcommented, Dec 14, 2018

Thanks! I’ll move this to ptvsd issue tracker.

0reactions

huguesvcommented, Dec 14, 2018

Issue moved to Microsoft/ptvsd #1073 via ZenHub

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