There is already a caching mechanism in place for the Compose file, can we make use of that? - http://kdemonkey.blogspot.co.uk/2008/04/magic-trick.html
On 31 October 2013 07:38, Knoll Lars <lars.kn...@digia.com> wrote: > Before going to a binary format, I’d first like to check whether we can > further speed up the parsing. I’ve done some work in that area in spring, > but I know there was still quite some room to improve it. > > Cheers, > Lars > > From: Jiergir Ogoerg <f35f22...@gmail.com> > Date: torsdag 31. oktober 2013 04:10 > To: "<development@qt-project.org>" <development@qt-project.org> > Subject: [Development] Cut 7+ms of Qt5 startup time on Linux > > Hi, > > Since each qt (gui) app on Linux parses the text file > /usr/share/X11/locale/en_US.UTF-8/Compose > line by line which on my computer is 549Kib (almost 6000 lines) > it takes on my 64bit OS with Intel Core i5 about 7ms to parse, > so the idea is to cache the locale file in binary format in the > home/.kde directory (the binary file is also smaller than the other one), > this new way takes less than 1ms to load since > there's pretty much nothing to parse. > That's the core idea. > The user's locale changes (very) rarely if at all, so pretty > much all the time he'll load the cached (quick) version, > but when the locale does change or gets updated - > the cache is updated accordingly. > > If this approach isn't good stop reading here and please let me > know. > > I attached the 2 files in zip format. > > The source code is rather dirty cause it doesn't strictly adhere > to the Qt coding style - my goal was a working solution. > > Since I don't represent any company and the changes are simple > would somebody please take the changes and shape them into a > mergeable commit or must I take all the steps to become an > official contributor and polish the code to a mergeable state myself? > > Only 2 files affected: > /qtbase/src/plugins/platforminputcontexts/compose/generator/qtablegenerator.cpp > and > /qtbase/src/plugins/platforminputcontexts/compose/generator/qtablegenerator.h > > > _______________________________________________ > Development mailing list > Development@qt-project.org > http://lists.qt-project.org/mailman/listinfo/development > _______________________________________________ Development mailing list Development@qt-project.org http://lists.qt-project.org/mailman/listinfo/development