D17217: Implement free memory notifier

[Oleg Solovyov]

McPain created this revision.
McPain added a reviewer: broulik.
Herald added a project: Plasma.
Herald added a subscriber: plasma-devel.
McPain requested review of this revision.

REVISION SUMMARY
  FreeMemoryNotifier will warn when free RAM is running out.
  By default, it is 25% without swap space.
  
  Like freespacenotifier, it will check every 5 seconds for amount of free memory and
  warn every time when it drops below limit and when free space amount drops more than half of previous value
  
  User can either kill most greedy process immediately or open a task manager to kill unneeded processes manually.
  Task manager was patched to ignore global config and show only user own processes, sorted by memory used in descending order.
  
  The settings are available at new KCM located in Desktop Behavior category.
  KCM and KDED modules are linked through DBus - committed settings are applied immediately.

REPOSITORY
  R120 Plasma Workspace

REVISION DETAIL
  https://phabricator.kde.org/D17217

AFFECTED FILES
  plasma-workspace/CMakeLists.txt
  plasma-workspace/freememorynotifier/CMakeLists.txt
  plasma-workspace/freememorynotifier/COPYING
  plasma-workspace/freememorynotifier/Messages.sh
  plasma-workspace/freememorynotifier/README
  plasma-workspace/freememorynotifier/freememorynotifier.cpp
  plasma-workspace/freememorynotifier/freememorynotifier.desktop
  plasma-workspace/freememorynotifier/freememorynotifier.h
  plasma-workspace/freememorynotifier/freememorynotifier.kcfg
  plasma-workspace/freememorynotifier/freememorynotifier.notifyrc
  plasma-workspace/freememorynotifier/freememorynotifier_prefs_base.ui
  plasma-workspace/freememorynotifier/kcm_freememorynotifier.cpp
  plasma-workspace/freememorynotifier/kcm_freememorynotifier.desktop
  plasma-workspace/freememorynotifier/kcm_freememorynotifier.h
  plasma-workspace/freememorynotifier/module.cpp
  plasma-workspace/freememorynotifier/module.h
  plasma-workspace/freememorynotifier/org.kde.FreeMemoryNotifier.xml
  plasma-workspace/freememorynotifier/settings.kcfgc
  plasma-workspace/systemmonitor/ksystemactivitydialog.cpp
  plasma-workspace/systemmonitor/ksystemactivitydialog.h
  plasma-workspace/systemmonitor/main.cpp

To: McPain, broulik
Cc: plasma-devel, ragreen, Pitel, ZrenBot, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart
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