kwin/tabbox
Arjen Hiemstra 9b3d9e58a4 ScreenEdge: Do not use localtime for measuring duration
Summary:
QDateTime::fromMSecSinceEpoch uses Qt::LocalTime by default. This involves an
expensive localtime conversion. So instead force things to use UTC, as there
is no need for timezone information when tracking durations.

This is especially noticeable on Bedrock Linux, which uses a Fuse mounted
/etc, which is slower than a plain /etc and causes quite some slowdown there.
See https://github.com/bedrocklinux/bedrocklinux-userland/issues/140 for
details.

Test Plan: The screenedge unit test still passes.

Reviewers: #kwin, davidedmundson

Reviewed By: #kwin, davidedmundson

Subscribers: zzag, anthonyfieroni, davidedmundson, kwin

Tags: #kwin

Differential Revision: https://phabricator.kde.org/D27114
2020-02-03 12:26:17 +01:00
..
clientmodel.cpp
clientmodel.h
CMakeLists.txt
desktopchain.cpp
desktopchain.h
desktopmodel.cpp
desktopmodel.h
kwindesktopswitcher.desktop SVN_SILENT made messages (.desktop file) - always resolve ours 2020-01-29 09:28:27 +01:00
kwinwindowswitcher.desktop
switcheritem.cpp
switcheritem.h
tabbox.cpp Drop some custom list typedefs 2019-11-27 15:54:08 +02:00
tabbox.h [tabbox] Drop TabBoxClient::window() method 2019-11-18 10:43:41 +02:00
tabbox_logging.cpp
tabbox_logging.h
tabboxconfig.cpp
tabboxconfig.h
tabboxhandler.cpp
tabboxhandler.h [tabbox] Drop TabBoxClient::window() method 2019-11-18 10:43:41 +02:00
x11_filter.cpp ScreenEdge: Do not use localtime for measuring duration 2020-02-03 12:26:17 +01:00
x11_filter.h