[Kst] [Bug 239907] New: Kst freezes when saving vectors to file

Andrew Walker arwalker at sumusltd.com
Fri May 28 20:59:31 CEST 2010


           Summary: Kst freezes when saving vectors to file
           Product: kst
           Version: 1.9.1
          Platform: Compiled Sources
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: NOR
         Component: general
        AssignedTo: kst at kde.org
        ReportedBy: arwalker at sumusltd.com

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.

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