[Qt-interest] QtService startup on Mac

[Nehemiah Dacres]

On Fri, Jul 31, 2009 at 3:31 PM, Nehemiah Dacres <dacresni at slu.edu> wrote:

>
> http://www.qtsoftware.com/products/appdev/add-on-products/catalog/4/Utilities/qtservice
>
> It looks like QtSerivce uses it, according to the Changes part of the above
> link. I would suggest you either not use Launchd or QtService. It looks like
> you will probibly give up launchd sense the latter breaks portablility?
> If Qt offers this functionality, perhaps you should trust it does
> everything else correctly and not try to help it.
> On Fri, Jul 31, 2009 at 3:21 PM, Daniel Grubbs <dgrubbs at dexrex.com> wrote:
>
>> Well, I guess that might cause the problem, but I don't think I've got
>> anything that forks, unless QLibrary forks somewhere?
>>
>> Dan
>>
>>
>> On Fri, Jul 31, 2009 at 4:13 PM, Nehemiah Dacres <dacresni at slu.edu>wrote:
>>
>>> sorry for the caps, I was Kind of off when I wrote that.  I believe your
>>> daemon uses a function that is forking another process which, (if im not
>>> mistaken) isn't allowed in launchd created processes. Let me check the
>>> documentation to make sure. but avoid fork, if your daemon forks, try
>>> launching that process with launchd instead.
>>>
>>>
>>> On Fri, Jul 31, 2009 at 3:07 PM, Nehemiah Dacres <dacresni at slu.edu>wrote:
>>>
>>>> DO NOT USE FORK IN Launchd
>>>>
>>>>
>>>>
>>>> if im not mistaken.
>>>>
>>>> On Fri, Jul 31, 2009 at 1:34 PM, Daniel Grubbs <dgrubbs at dexrex.com>wrote:
>>>>
>>>>> Every 10 seconds:
>>>>>
>>>>> 7/31/09 12:33:38 PM com.dexrex.launchdaemon[96] The service Daemon
>>>>> could not start
>>>>>
>>>>> 7/31/09 12:33:38 PM com.apple.launchd[1] (com.dexrex.launchdaemon[96])
>>>>> Exited with exit code: 252
>>>>>
>>>>> 7/31/09 12:33:38 PM com.apple.launchd[1] (com.dexrex.launchdaemon)
>>>>> Throttling respawn: Will start in 10 seconds
>>>>>
>>>>>
>>>>> On Fri, Jul 31, 2009 at 1:26 PM, Brad Howes <howes at ll.mit.edu> wrote:
>>>>>
>>>>>>
>>>>>> On Jul 31, 2009, at 1:04 PM, Daniel Grubbs wrote:
>>>>>>
>>>>>> > This is launched by launchd and partially works.  It starts the
>>>>>> > daemon fine, but doesn't work to keep it alive.  If I take out the
>>>>>> > "<key>OnDemand</key><true/>", which shouldn't be needed, launchd
>>>>>> > starts the daemon twice and then repeatedly tries to start it again
>>>>>> > every 10 seconds. It doesn't seem to recognize that it is already
>>>>>> > running twice. Adding the OnDemand key prevents it from trying to
>>>>>> > restart repeatedly (It only starts once, and works fine.) but is no
>>>>>> > longer restarted if it dies.
>>>>>>
>>>>>>
>>>>>> What does your Console log show?
>>>>>>
>>>>>> Brad
>>>>>>
>>>>>> --
>>>>>> Brad Howes
>>>>>> Group 42
>>>>>> MIT Lincoln Laboratory • 244 Wood St. • Lexington, MA 02173
>>>>>> Phone: 781.981.5292 • Fax: 781.981.3495 • Secretary: 781.981.7420
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Qt-interest mailing list
>>>>>> Qt-interest at trolltech.com
>>>>>> http://lists.trolltech.com/mailman/listinfo/qt-interest
>>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Qt-interest mailing list
>>>>> Qt-interest at trolltech.com
>>>>> http://lists.trolltech.com/mailman/listinfo/qt-interest
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>> Nehemiah I. Dacres
>>>> Secretary
>>>> Math and Computer Science Club
>>>>
>>>
>>>
>>>
>>> --
>>> Nehemiah I. Dacres
>>> Secretary
>>> Math and Computer Science Club
>>>
>>
>>
>
>
> --
> Nehemiah I. Dacres
> Secretary
> Math and Computer Science Club
>



-- 
Nehemiah I. Dacres
Secretary
Math and Computer Science Club
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.qt-project.org/pipermail/qt-interest-old/attachments/20090731/172b8d0b/attachment.html