Menu
▾
▴
Re: [naviserver-devel] Startup Error for tclws in naviserver 4.99.13
|
From: Wolfgang W. <wol...@di...> - 2016-10-21 08:35:22
|
Dear Gustav!
The patch fixed it, everything works flawlessly now.
Thanks (once again) for your help.
Wolfgang
Am 2016-10-21 um 09:33 schrieb Gustaf Neumann:
> Dear Wolfgang,
>
> I found an explanation: probably you have indeed no legacy defer
> callbacks registered, but NaviServer does an UpdateInterp() even when
> no defer callbacks were executed, which might have changed the state.
> During UpdateInterp() it probably re-evaluates the "namespace eval
> ::WS::Utils {...}", which complains, since tdom rejects to reset "its"
> variable. I wonder, whether this is the only place, where the
> interaction between tclws & tdom & interp updates can cause complaints.
>
> Anyhow, the change [1] omits the update of the interpreter, when
> nothing could have been changed by the defer callbacks. It should be
> as well performance-wise better.
>
> Hope this helps
> -g
>
> https://bitbucket.org/naviserver/naviserver/commits/526312b7ac23f734f0002d3d1514025dfb4ea36e
>
> Am 21.10.16 um 07:59 schrieb Wolfgang Winkler:
>> We are using
>>
>> ns_param nssock ${bindir}/nssock.so
>> ns_param nslog ${bindir}/nslog.so
>> ns_param nsdb ${bindir}/nsdb.so
>> ns_param nscp ${bindir}/nscp.so
>> ns_param nsproxy ${bindir}/nsproxy.so
>>
>> ns_param postgres "${bindir}/nsdbpg.so"
>>
>> I tried to uncomment them, but the error is still there.
>>
>> I've grepped through all our sources but did not find a call to
>> Ns_TclRegisterDeferred, ns_ictl cleanup or ns_cleanup.
>>
>>
>> Am 2016-10-20 um 17:18 schrieb Gustaf Neumann:
>>> sure. but the point is, this call does on usual installations
>>> nothing, .... unless someone registers a function with
>>> Ns_TclRegisterDeferred().
>>> What modules are you loading?
>>> -g
>>>
>>> Am 20.10.16 um 16:53 schrieb Wolfgang Winkler:
>>>> ns_ictl cleanup is called from ns_cleanup in
>>>> naviserver/bin/init.tcl. When I remove the call, the error goes
>>>> way. These are the relevant calls:
>>>>
>>>>
>>>> ns_ictl trace deallocate ns_cleanup
>>>>
>>>> proc ns_cleanup {} {
>>>> ns_cleanupchans; # Close files
>>>> ns_cleanupvars; # Destroy global variables
>>>> ns_set cleanup; # Destroy non-shared sets
>>>> ns_http cleanup; # Abort any http requests
>>>> #ns_ictl cleanup; # Run depreciated 1-shot Ns_TclRegisterDefer's.
>>>> }
>>>>
>>>> regards,
>>>>
>>>> Wolfgang
>>>>
>>>> Am 2016-10-20 um 16:26 schrieb Gustaf Neumann:
>>>>> Hmm, it looks to me, as if this error is triggered not from the
>>>>> startup, but from the shutdown.
>>>>>
>>>>> The backtrace shows, that "ns_ictl cleanup" is causing this, which
>>>>> in turn calls the callbacks registered with
>>>>> Ns_TclRegisterDeferred(), which is a deprecated function (since
>>>>> many years). Ns_TclRegisterDeferred() is nowhere called within
>>>>> NaviServer, so it looks to me that you might have c-based module
>>>>> in use, which calls this function.... is this correct?
>>>>>
>>>>> Aside form the strange situation around "ns_ictl cleanup", the
>>>>> error was probably triggered in earlier versions of NaviServer as
>>>>> well, but in some newer versions of NaviServer, error conditions,
>>>>> which were silently swallowed before, are now reported back to the
>>>>> user.
>>>>>
>>>>> The message "var is read-only" is actually generated by tDOM. It
>>>>> might be the case, that the function registered via
>>>>> Ns_TclRegisterDeferred() either sources Utilities.tcl (from
>>>>> tclws), or it might re-evaluate the blueprint during shutdown;
>>>>> both is probably not wanted.
>>>>>
>>>>> Hope this helps
>>>>> -g
>>>>>
>>>>> Am 20.10.16 um 10:25 schrieb Wolfgang Winkler:
>>>>>>
>>>>>> Hi!
>>>>>>
>>>>>> We are using webservices for tcl (tclws) with naviserver. For
>>>>>> naviserver version 4.99.7 we sometimes get the following error
>>>>>> message:
>>>>>>
>>>>>> Error: can't set "xsltSchemaDom": var is read-only
>>>>>> var is read-only
>>>>>> (write trace on "xsltSchemaDom")
>>>>>> invoked from within
>>>>>> "variable xsltSchemaDom domDoc0xa7c640"
>>>>>> (in namespace eval "::WS::Utils" script line 3)
>>>>>> invoked from within
>>>>>> "namespace eval ::WS::Utils {
>>>>>> variable currentNs {}
>>>>>> variable xsltSchemaDom domDoc0xa7c640
>>>>>> variable standardAttributes {
>>>>>> baseType
>>>>>> comme..."
>>>>>> invoked from within
>>>>>> "ns_ictl cleanup"
>>>>>> (procedure "ns_cleanup" line 6)
>>>>>> invoked from within
>>>>>> "ns_cleanup"
>>>>>> while executing callback
>>>>>> ns:tcltrace ns_cleanup
>>>>>> (context: trace proc)
>>>>>>
>>>>>> With version 4.99.13 we get his error on every startup. It seems
>>>>>> to be connected to thread creation. Has anybody any idea how to
>>>>>> prevent this error?
>>>>>>
>>>>>> regards,
>>>>>>
>>>>>> Wolfgang
>>>>>>
>>>>>>
>>>>>> --
>>>>>>
>>>>>> *Wolfgang Winkler*
>>>>>> Geschäftsführung
>>>>>> wol...@di...
>>>>>> mobil +43.699.19971172
>>>>>>
>>>>>> dc:*büro*
>>>>>> digital concepts Novak Winkler OG
>>>>>> Software & Design
>>>>>> Landstraße 68, 5. Stock, 4020 Linz
>>>>>> www.digital-concepts.com <http://www.digital-concepts.com>
>>>>>> tel +43.732.997117.72
>>>>>> tel +43.699.1997117.2
>>>>>>
>>>>>> Firmenbuchnummer: 192003h
>>>>>> Firmenbuchgericht: Landesgericht Linz
>>>>>>
>>>>>>
>>>>>
>>>
>>>
>>>
>>> ------------------------------------------------------------------------------
>>> Check out the vibrant tech community on one of the world's most
>>> engaging tech sites, SlashDot.org!http://sdm.link/slashdot
>>>
>>>
>>> _______________________________________________
>>> naviserver-devel mailing list
>>> nav...@li...
>>> https://lists.sourceforge.net/lists/listinfo/naviserver-devel
>>
>>
>> --
>>
>> *Wolfgang Winkler*
>> Geschäftsführung
>> wol...@di...
>> mobil +43.699.19971172
>>
>> dc:*büro*
>> digital concepts Novak Winkler OG
>> Software & Design
>> Landstraße 68, 5. Stock, 4020 Linz
>> www.digital-concepts.com <http://www.digital-concepts.com>
>> tel +43.732.997117.72
>> tel +43.699.1997117.2
>>
>> Firmenbuchnummer: 192003h
>> Firmenbuchgericht: Landesgericht Linz
>>
>>
>>
>
>
>
> ------------------------------------------------------------------------------
> Check out the vibrant tech community on one of the world's most
> engaging tech sites, SlashDot.org! http://sdm.link/slashdot
>
>
> _______________________________________________
> naviserver-devel mailing list
> nav...@li...
> https://lists.sourceforge.net/lists/listinfo/naviserver-devel
--
*Wolfgang Winkler*
Geschäftsführung
wol...@di...
mobil +43.699.19971172
dc:*büro*
digital concepts Novak Winkler OG
Software & Design
Landstraße 68, 5. Stock, 4020 Linz
www.digital-concepts.com <http://www.digital-concepts.com>
tel +43.732.997117.72
tel +43.699.1997117.2
Firmenbuchnummer: 192003h
Firmenbuchgericht: Landesgericht Linz
|
