D5409: Queue some connections which cannot be autodetected

[Dan Leinir Turthra Jensen]

leinir created this revision.
Restricted Application added a project: Plasma.
Restricted Application added a subscriber: plasma-devel.

REVISION SUMMARY
  Some of the connections we make are doing cross-thread calls, but in functions which exist on objects which live inside the same thread. Consequently, connect can't auto-detect that they need to be queued, and we end up sometimes (and during searches regularly) crashing because updates happen at the wrong time. I am unsure whether this is quite all of them, but with this patch the search functionality is much less crashy.

REPOSITORY
  R134 Discover Software Store

REVISION DETAIL
  https://phabricator.kde.org/D5409

AFFECTED FILES
  libdiscover/backends/KNSBackend/KNSBackend.cpp
  libdiscover/backends/PackageKitBackend/PackageKitBackend.cpp

To: leinir, apol, #discover_software_store
Cc: plasma-devel, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol
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