[kde-freebsd] QFilesSystemWatcher instead of polling/FAM

Tijl Coosemans tijl at coosemans.org
Wed Aug 4 12:33:44 CEST 2010


On Tuesday 03 August 2010 20:21:48 Max Brazhnikov wrote:
> On Mon, 2 Aug 2010 22:10:52 +0200, Tijl Coosemans wrote:
>> On Monday 19 July 2010 14:07:56 Rusty Nejdl wrote:
>>> On Mon, 19 Jul 2010 12:20:35 +0200, Jaap Boender wrote:
>>>>>>>> I've attached a patch that makes KDE use QFileSystemWatcher on
>>>>>>>> FreeBSD which uses kqueue instead of stat. I've been using it for
>>>>>>>> the past few days and it seems to work rather well.
>>>> 
>>>> I've been using the patch (the July 8 version), and it works well
>>>> for the most part; the only problem is that plasma-desktop runs up
>>>> to 100% CPU usage every once in a while (and becomes unresponsive),
>>>> so that I've got to kill and restart.
>>>> 
>>>> Looking at the logs, there doesn't seem to be any particular error
>>>> message, and it doesn't seem to be triggered by any specific action.
>>>> If you need me to do anything specific for debugging purposes, or
>>>> need more information, let me know.
>>> 
>>> I can completely attest to this and mine was so bad I had to remove
>>> the patch.  Plasma would die but everything else would work after
>>> that.
>> 
>> It turns out that Qt uses a continue statement in a do-while loop
>> thereby creating an infinite loop. The attached patch should solve it.
>> You have to put it in devel/qt4-corelib/files/ and rebuild that port.
>> 
>> I'm still trying to fix some more issues, but this should already help
>> a lot, so please give it a try.
> 
> Still crashes with this patch and your latest patch for kdelibs:
> 
> http://people.freebsd.org/~makc/kded4-20100803-221345.kcrash

Yes, the patch is only for the plasma-desktop problem.

Could you tell me if that crash is on i386/amd64, single/multi core
and what CPUTYPE, CFLAGS and CXXFLAGS are set to in make.conf?
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