Bug 423487

Summary: FileFetchJob blocks gui thread
Product: [Frameworks and Libraries] baloo-widgets Reporter: Harald Sitter <sitter>
Component: generalAssignee: Stefan Brüns <stefan.bruens>
Status: REPORTED ---    
Severity: normal CC: nate
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: Other   
OS: Linux   
See Also: https://bugs.kde.org/show_bug.cgi?id=178678
Latest Commit: Version Fixed In:
Bug Depends on:    
Bug Blocks: 423082    

Description Harald Sitter 2020-06-25 11:09:33 UTC 
When disk IO is slow FileFetchJob can block dolphin's GUI entirely because it does a blocking waitForFinished call. At a glance that's unnecessary given the job has an async api and could use qprocess by attaching to signals.

#7  QProcessPrivate::waitForFinished (this=this@entry=0x557a8c2c3420, msecs=msecs@entry=30000) at io/qprocess_unix.cpp:839
#8  0x00007faf075a1751 in QProcess::waitForFinished (this=<optimized out>, msecs=30000) at io/qprocess.cpp:1929
#9  0x00007faf09201b2d in Baloo::FileFetchJob::doStart (this=0x557a8c8c5bd0) at ./src/filefetchjob.cpp:81
#10 0x00007faf0765d2a9 in QObject::event (this=0x557a8c8c5bd0, e=0x557a8c908d00) at kernel/qobject.cpp:1339