Bug 239907

Summary: Kst freezes when saving vectors to file
Product: [Applications] kst Reporter: Andrew Walker <arwalker>
Component: generalAssignee: kst
Status: RESOLVED FIXED    
Severity: normal    
Priority: NOR    
Version First Reported In: 1.9.1   
Target Milestone: ---   
Platform: Compiled Sources   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Andrew Walker 2010-05-28 20:59:30 UTC 
Version:           1.9.1 (using KDE 4.4.0) 
OS:                Linux

Kst freezes due to a deadlock condition when using the "Save Vectors to Disk..." command.

Reproducible: Didn't try

Steps to Reproduce:
Start Kst
Create a vector
Select File... Save Vectors to Disk...
Select a vector and click Save

Actual Results:  
Kst freezes

Expected Results:  
Kst saves data to disk

The problem arises as when the data is being saved, with the corresponding vectors read-locked, a progress bar is updated, which involves handling paint events. These paint events can trigger read-locks on the same vectors being saved, resulting in a deadlock.
Comment 1 Andrew Walker 2010-05-28 21:00:48 UTC 
SVN commit 1131712 by arwalker:

BUG:239907 no longer update progress bar when writing vectors to disk so as to avoid a deadlock

 M  +0 -8      kstdatacollection-gui.cpp  


WebSVN link: http://websvn.kde.org/?view=rev&revision=1131712