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Posted to log4cxx-user@logging.apache.org by Oscar Pernas <os...@pernas.es> on 2013/01/23 13:29:10 UTC

Re: multiples instances of log4cxx

Hi Thorsten,

I was looking into this problem again:

My process is call MyAI. MyAi is loading its instance of log4cxx like this:

static log4cxx::LoggerPtr loggerMyAI;
LoggerPtr MyAI::loggerMyAI(Logger::getLogger("MyAI"));
PropertyConfigurator::configure("log4jMyAI.properties");

After this configure method, The first trace is sent using
log4MyAI.properties correctly.



After that, the process loads a dll that uses log4cxx in the same way the
process.

static log4cxx::LoggerPtr logger;
LoggerPtr AI::logger(Logger::getLogger("AI"));
PropertyConfigurator::configure("log4jAI.properties");

And after that, all traces (process and dll's) are sent using
log4jAI.properties.


I was looking how the process is loading log4cxx library with ldd and I
think that is using it dinamically (correct me if Im wrong):

(PROCESS)

ldd ActiveInterfaceTest
        liblog4cxx.so.10 => /usr/lib/liblog4cxx.so.10 (0x00007f813ed09000)



(DLL) ldd libAI.so
        liblog4cxx.so.10 => /usr/lib/liblog4cxx.so.10 (0x00007fb53683a000)


What I'm doing wrong? I think that Im linking with the correct dinamic
library...


Regards


2013/1/17 Oscar Pernas <os...@pernas.es>

> Hi Thorsten,
>
> I was looking into this problem again:
>
> My process is call MyAI. MyAi is loading its instance of log4cxx like this:
>
> static log4cxx::LoggerPtr loggerMyAI;
> LoggerPtr MyAI::loggerMyAI(Logger::getLogger("MyAI"));
> PropertyConfigurator::configure("log4jMyAI.properties");
>
> After this configure method, The first trace is sent using
> log4MyAI.properties correctly.
>
>
>
> After that, the process loads a dll that uses log4cxx in the same way the
> process.
>
> static log4cxx::LoggerPtr logger;
> LoggerPtr AI::logger(Logger::getLogger("AI"));
> PropertyConfigurator::configure("log4jAI.properties");
>
> And after that, all traces (process and dll's) are sent using
> log4jAI.properties.
>
>
> I was looking how the process is loading log4cxx library with ldd and I
> think that is using it dinamically (correct me if Im wrong):
>
> (PROCESS)
>
> ldd ActiveInterfaceTest
>         liblog4cxx.so.10 => /usr/lib/liblog4cxx.so.10 (0x00007f813ed09000)
>
>
>
> (DLL) ldd libAI.so
>         liblog4cxx.so.10 => /usr/lib/liblog4cxx.so.10 (0x00007fb53683a000)
>
>
> What I'm doing wrong? I think that Im linking with the correct dinamic
> library...
>
>
> Regards
>
>
> 2012/10/24 Thorsten Schöning <ts...@am-soft.de>
>
>> Guten Tag Oscar Pernas,
>> am Mittwoch, 24. Oktober 2012 um 16:14 schrieben Sie:
>>
>> > Is log4cxx a singleton? could I have different instances of log4cxx in
>> > the same process?
>>
>> This should answer your question with no on dynamic linking like yours.
>>
>>
>> http://mail-archives.apache.org/mod_mbox/logging-log4cxx-user/200408.mbox/%3C856DBBCE-F622-11D8-B017-000393B97126@apache.org%3E
>>
>> Mit freundlichen Grüßen,
>>
>> Thorsten Schöning
>>
>> --
>> Thorsten Schöning       E-Mail:Thorsten.Schoening@AM-SoFT.de
>> AM-SoFT IT-Systeme      http://www.AM-SoFT.de/
>>
>> Telefon...........05151-  9468- 55
>> Fax...............05151-  9468- 88
>> Mobil..............0178-8 9468- 04
>>
>> AM-SoFT GmbH IT-Systeme, Brandenburger Str. 7c, 31789 Hameln
>> AG Hannover HRB 207 694 - Geschäftsführer: Andreas Muchow
>>
>>
>
>
> --
> Óscar Pernas Plaza.
>



-- 
Óscar Pernas Plaza.

Re: multiples instances of log4cxx

Posted by Thorsten Schöning <ts...@am-soft.de>.
Guten Tag Oscar Pernas,
am Mittwoch, 23. Januar 2013 um 13:29 schrieben Sie:

> What I'm doing wrong? I think that Im linking with the correct dinamic library...

Did you read my quoted link? The behavior you see is intended on
dynamic link libraries.

Mit freundlichen Grüßen,

Thorsten Schöning

-- 
Thorsten Schöning       E-Mail:Thorsten.Schoening@AM-SoFT.de
AM-SoFT IT-Systeme      http://www.AM-SoFT.de/

Telefon...........05151-  9468- 55
Fax...............05151-  9468- 88
Mobil..............0178-8 9468- 04

AM-SoFT GmbH IT-Systeme, Brandenburger Str. 7c, 31789 Hameln
AG Hannover HRB 207 694 - Geschäftsführer: Andreas Muchow