RESOLVED FIXED158756
Continuous "Reentrancy avoided" error messages in run-webkit-tests if Simulator quits unexpectedly 
https://bugs.webkit.org/show_bug.cgi?id=158756
Summary Continuous "Reentrancy avoided" error messages in run-webkit-tests if Simulat...
Aakash Jain
Reported 2016-06-14 14:50:16 PDT
While simulators are booting up, if someone manually kills a simulator (or simulator gets killed for some reason), we notice following continuos error messages in logs: 14:36:13.791 12047 Error in checking Simulator boot status. Could not print domain: 141: Reentrancy avoided 14:36:14.875 12047 Error in checking Simulator boot status. Could not print domain: 141: Reentrancy avoided 14:36:15.961 12047 Error in checking Simulator boot status. Could not print domain: 141: Reentrancy avoided 14:36:17.050 12047 Error in checking Simulator boot status. Could not print domain: 141: Reentrancy avoided 14:36:18.137 12047 Error in checking Simulator boot status. Could not print domain: 141: Reentrancy avoided 14:36:19.224 12047 Error in checking Simulator boot status. Could not print domain: 141: Reentrancy avoided
Attachments
Proposed patch (1.76 KB, patch)
2016-06-14 15:13 PDT, Aakash Jain 		no flags
DetailsFormatted DiffDiff
Updated patch (1.76 KB, patch)
2016-06-14 15:55 PDT, Aakash Jain 		no flags
DetailsFormatted DiffDiff
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.
Aakash Jain
Comment 1 2016-06-14 14:51:32 PDT
This happens because the command use to check the Simulator boot status fails, and we keep retrying every second until timeout is hit (default timeout is 5 mins).
Aakash Jain
Comment 2 2016-06-14 15:13:16 PDT
Created attachment 281288 [details] Proposed patch
Alexey Proskuryakov
Comment 3 2016-06-14 15:31:18 PDT
Comment on attachment 281288 [details] Proposed patch View in context: https://bugs.webkit.org/attachment.cgi?id=281288&action=review > Tools/Scripts/webkitpy/xcode/simulator.py:288 > + _log.warn("Error in checking Simulator boot status. Will retry in 1 second.") > + if Simulator.device_state(udid) != Simulator.DeviceState.BOOTED: > + raise RuntimeError('Simuator device quit unexpectedly.') Can't the "will retry" message be untrue now?
Aakash Jain
Comment 4 2016-06-14 15:34:58 PDT
It is still true. Even if the simulator device is booted, sometimes "xcrun simctl spawan uddid launchctl" command fails for unknown reasons, in that case we do retry after 1 seconds.
Alexey Proskuryakov
Comment 5 2016-06-14 15:51:16 PDT
What if we raise the exception instead of waiting?
Aakash Jain
Comment 6 2016-06-14 15:55:04 PDT
Created attachment 281293 [details] Updated patch
WebKit Commit Bot
Comment 7 2016-06-14 16:26:34 PDT
Comment on attachment 281293 [details] Updated patch Clearing flags on attachment: 281293 Committed r202070: <http://trac.webkit.org/changeset/202070>
WebKit Commit Bot
Comment 8 2016-06-14 16:26:38 PDT
All reviewed patches have been landed. Closing bug.
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