Bug 514764

Summary:	"Find new items" background task is not stopped when closing DigiKam
Product:	[Applications] digikam	Reporter:	kde
Component:	Searches-Similarity	Assignee:	Digikam Developers <digikam-bugs-null>
Status:	RESOLVED FIXED
Severity:	normal	CC:	caulier.gilles
Priority:	NOR
Version First Reported In:	8.8.0
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:	https://invent.kde.org/graphics/digikam/-/commit/e6b5b59afc88359787c4dbdd273f8ecac45cf80c	Version Fixed/Implemented In:	9.0.0
Sentry Crash Report:

Description kde 2026-01-17 20:37:12 UTC

SUMMARY
If you close the DigiKam software while the "Find new items" background process is running, the main DigiKam window will close but the scan process will continue (probably until it completes?)

STEPS TO REPRODUCE
1. Start ProcMon and filter for DigiKam process / QueryDirectory operation
2. Start DigiKam
3. In my case, the "Find new items" background task automatically starts (and can be monitored in the background tasks tray)
4. Confirm ProcMon is logging
5. Close DigiKam

OBSERVED RESULT
ProcMon is still scanning folders way after DigiKam closed and Task Manager still shows DigiKam as a running background task.

EXPECTED RESULT
The background process whould be cleanly aborted if the main application is closed. Additionaly, a popup could ask the user if he really wants to close the application since it will interrupt background processes.

SOFTWARE/OS VERSIONS
digiKam: 8.8.0
KDE Frameworks: 6.17.0
Qt: Using 6.9.1 and built against 6.9.1
Windows 11 Version 25H2
Build ABI: x86_64-little_endian-llp64
Kernel: winnt 10.0.26200

ADDITIONAL INFORMATION
Each time I start a new DigiKam instance, these background processes will pile up. I suppose that at some point, races could occur...

Comment 1 Maik Qualmann 2026-01-18 13:00:15 UTC

Git commit e6b5b59afc88359787c4dbdd273f8ecac45cf80c by Maik Qualmann.
Committed on 18/01/2026 at 12:58.
Pushed by mqualmann into branch 'master'.

faster exit from item scanning process
Related: bug 514683
FIXED-IN: 9.0.0

M  +1    -1    NEWS
M  +10   -0    core/libs/database/collection/collectionscanner_scan.cpp
M  +5    -1    core/libs/database/collection/collectionscanner_utils.cpp
M  +6    -5    core/libs/database/utils/scan/scancontroller_stop.cpp

https://invent.kde.org/graphics/digikam/-/commit/e6b5b59afc88359787c4dbdd273f8ecac45cf80c