D17741: avoid blocking kio_http_cache_cleaner and ensure exit with session

[Martin Koller]

mkoller created this revision.
mkoller added a reviewer: dfaure.
Herald added a project: Frameworks.
Herald added a subscriber: kde-frameworks-devel.
mkoller requested review of this revision.

REVISION SUMMARY
  Currently when logging out, kio_http_cache_cleaner stays alive and blocks in 
  QCoreApplication::processEvents(QEventLoop::WaitForMoreEvents);
  forever.
  
  This patch avoids this blocking and ensures that the main loop will exit when the session bus is no longer connected.

TEST PLAN
  logging in, check CPU load of kio_http_cache_cleaner, log out, check if kio_http_cache_cleaner still runs.

REPOSITORY
  R241 KIO

REVISION DETAIL
  https://phabricator.kde.org/D17741

AFFECTED FILES
  http_cache_cleaner.cpp

To: mkoller, dfaure
Cc: kde-frameworks-devel, michaelh, ngraham, bruns
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