log4cplus-devel — Mailing list for log4cplus developers

[Log4cplus-devel] migration of source hosting to Git on Github

[Václav Z. <vha...@gm...>]

Hi.

I have decided to migrate log4cplus source code hosting to Git on
Github. The repository is at <https://github.com/log4cplus/log4cplus>.
Bug tracker, etc., stays on SourceForge.

Why? Bazaar development is pretty much dead and SourceForge is not
supporting it any more. Log4cplus can survive a bit longer with Bazaar
on Launchpad but there are other things to consider:

- Git seems to have won the DVCS wars, at least for next few years.
Migrations to Git seem to be happening quite a lot while migrations from
Git seem to be rare.

- Using main stream DVCS might make log4cplus hacking more attractive
and/or accessible to drive by contributors. According to some blogs and
posts on mailing lists, some people consider working with Bazaar hard
and Bazaar lacking some features they know from Git and they consider
having to learn yet another DVCS to contribute few small patches too much.

- It seems that Emacs development is going to move to Git soon (or is
even in the process of moving now). This is migration from Bazaar to
Git. That such important OSS project has decided to move from Bazaar to
Git has made me thinking about log4cplus hosting and Bazaar, again.

- I have recently been using Git through Emacs and magit and it was not
that bad experience. (I still hate the Git CLI.)

- I have shortly entertained the idea of moving to Mercurial but I have
quickly dismissed it. It seems it would just postpone move to Git only
for few months or years at best. Again, Git seems to have won the DVCS wars.

- I would like to use the Travis CI integration that Github offers,
without having to run a mirroring script on my home box.

-- 
VZ

Re: [Log4cplus-devel] cmake , static library ,ios 7

[yin k. <lai...@gm...>]

thank you very much for doing this


2014/1/1 Václav Zeman <vha...@gm...>

> On 12/31/2013 04:30 AM, yin kaka wrote:
> >  Hi, all.
> >        I try to porting log4cplus to ios platform , I have used the ios
> > cmake to generate the xcode project , but there is some errors when
> > compile it.
> > ios-cmake :https://code.google.com/p/ios-cmake/downloads/list
> >
> > Q1: in this platform , I confused that the two headers both missing ,
> >
> > #ifdef LOG4CPLUS_HAVE_SYS_TYPES_H
> >
> > #include <sys/types.h>
> >
> > #endif
> >
> > #ifdef LOG4CPLUS_HAVE_SYS_STAT_H
> >
> > #include <sys/stat.h>
> >
> > #endif
> >
> > Q2: in this platform , threads are not found
> >
> > find_package (Threads)
> >
> > this returns Threads_NOTFOUND,
> >
> > I think if there need some special confige to make this runnable in ios
> > platform, can some one else use log4cplus in ios platform , pelease help
> > me ?
>
> I have released version 1.1.3-RC1 that contains some portability fixes,
> some also for iOS. I have no way of testing that on iOS right now.
> Please try it.
>
> --
> VZ
>
>
>
>
> ------------------------------------------------------------------------------
> Rapidly troubleshoot problems before they affect your business. Most IT
> organizations don't have a clear picture of how application performance
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>
>

Re: [Log4cplus-devel] cmake , static library ,ios 7

[Václav Z. <vha...@gm...>]

On 12/31/2013 04:30 AM, yin kaka wrote:
>  Hi, all.
>        I try to porting log4cplus to ios platform , I have used the ios
> cmake to generate the xcode project , but there is some errors when
> compile it.
> ios-cmake :https://code.google.com/p/ios-cmake/downloads/list
> 
> Q1: in this platform , I confused that the two headers both missing ,
> 
> #ifdef LOG4CPLUS_HAVE_SYS_TYPES_H
> 
> #include <sys/types.h>
> 
> #endif
> 
> #ifdef LOG4CPLUS_HAVE_SYS_STAT_H
> 
> #include <sys/stat.h>
> 
> #endif
> 
> Q2: in this platform , threads are not found
> 
> find_package (Threads)
> 
> this returns Threads_NOTFOUND, 
> 
> I think if there need some special confige to make this runnable in ios
> platform, can some one else use log4cplus in ios platform , pelease help
> me ?

I have released version 1.1.3-RC1 that contains some portability fixes,
some also for iOS. I have no way of testing that on iOS right now.
Please try it.

-- 
VZ

[Log4cplus-devel] log4cplus 1.1.3-RC1 released

[Václav Z. <vha...@gm...>]

Hi.

I have released log4cplus 1.1.3-RC1. There are mainly portability fixes
related to MinGW, iOS, Android and CMake:

- Added --enable-symbols-visibility-options to configure script to allow
turning off use of compiler and platform specific symbols visibility
options.

- Added ENABLE_SYMBOLS_VISIBILITY setting for CMake build system to the
same effect as above.

- Disabled LOG4CPLUS_INLINES_ARE_EXPORTED to fix linking issues on MinGW
GCC 4.8.x.

- Added LOG4CPLUS_BUILD_LOGGINGSERVER setting for CMake build system to
allow disabling loggingserver. (Maxym)

- Allow users overriding LOG4CPLUS_MACRO_FUNCTION.

- Improved Android platform detection in CMake build system. (Maxym)

- Allow overriding ConfigureChecks.cmake with user supplied file to help
with issues on iOS platform.

- Updated android.toolchain.cmake from OpenCV project.

- Added iOS support to CMake build system. (Maxym)

- Fixed compilation issue of single-threaded builds on Windows.

- Improved CMake build system's default installation directories for GNU
platforms by using GNUInstallDirs module.

-- 
VZ

[Log4cplus-devel] cmake , static library ,ios 7

[yin k. <lai...@gm...>]

 Hi, all.
       I try to porting log4cplus to ios platform , I have used the ios
cmake to generate the xcode project , but there is some errors when compile
it.
ios-cmake :https://code.google.com/p/ios-cmake/downloads/list

Q1: in this platform , I confused that the two headers both missing ,

#ifdef LOG4CPLUS_HAVE_SYS_TYPES_H

#include <sys/types.h>

#endif

#ifdef LOG4CPLUS_HAVE_SYS_STAT_H

#include <sys/stat.h>

#endif

Q2: in this platform , threads are not found

find_package (Threads)

this returns Threads_NOTFOUND,

I think if there need some special confige to make this runnable in ios
platform, can some one else use log4cplus in ios platform , pelease help me
?

Re: [Log4cplus-devel] log4cplus, cmake and lib <-> lib64

[Václav Z. <vha...@gm...>]

On 12/29/2013 05:38 PM, Václav Zeman wrote:
> On 12/29/2013 02:38 PM, Christian Ehrlicher wrote:
>> Hi,
>>
>> I\'m trying to replace log4cxx with log4cplus in my projects
>> but got a small problem:
>>
>> would it be possible to install the log4cplus library into
>> lib64 on a 64 bit linux system? It should be doable by using
>> include(\"GNUInstallDirs\")
>> and the use the LIBDIR variable for the installation
>> directory, see also
>> http://cmake.3232098.n2.nabble.com/How-can-I-place-a-64bit-library-build-into-usr-lib64-td7585057.html
>> This file is available in cmake 2.8.x and up iirc.
> I can try that but it would probably help if you could provide a patch
> to that effect.
I have committed patches to both 1.1.x and trunk branches. Please test
changes.

-- 
VZ

[Log4cplus-devel] Fwd: How to use log4cplus in android vitural device

[yin k. <lai...@gm...>]

I have integreted the log4cplus in my android application through use it as
a static library. Because I am a newbie in android platform, i have some
problems.

In win32 platform , the fileappender will put the log file in the exe
directory ,but in the android virtual device , I can't find the log file.

In win32 project ,the consoleappender will output the log to the console
,but in the andriod application, the log didn't output in the logcat
window, it's puzzled me a lot .

Can some one get into the same troble before? please help me.

Re: [Log4cplus-devel] [log4cplus:bugs] #290 How to use log4cplus in android device

[Václav Z. <vha...@gm...>]

On 19 December 2013 14:56, Vladimir "Equidamoid" Shapranov
<equ...@gm...> wrote:
> Hi laiyierjiangsu,
>
> I'm using log4cplus in crossplatform android/ios app.
> The first option is to write your own appender. The simpliest one
> contains just one overridded method:
>  > void LogcatAppender::append(const
> log4cplus::spi::InternalLoggingEvent &event){
>  > log4cplus::tstring txt = formatEvent(event);
>  > __android_log_write(ANDROID_LOG_WARN, "yourappname", txt.c_str());
>  > }
> __android_log_write is defined in android/log.h header.
>
> Another way is to use SocketAppender class to send logs over wifi
> connection (I use my laptop as a receiver) and use loggingserver app to
> receive and read them.
>
> Also there is a possibility to redirect app's stdout to logcat (
> http://stackoverflow.com/questions/10531050/redirect-stdout-to-logcat-in-android-ndk
> ) but I haven't tried it.

Appender based on this logging API
(http://mobilepearls.com/labs/native-android-api/#logging) would be an
awesome addition to log4cplus.

>
> 19.12.2013 17:15 , laiyierjiangsu пишет:
>> ------------------------------------------------------------------------
>>
>> *[bugs:#290] <http://sourceforge.net/p/log4cplus/bugs/290/> How to use
>> log4cplus in android device*
>>
>> *Status:* open
>> *Labels:* android
>> *Created:* Thu Dec 19, 2013 01:15 PM UTC by laiyierjiangsu
>> *Last Updated:* Thu Dec 19, 2013 01:15 PM UTC
>> *Owner:* Václav Zeman
>>
>> I have integreted the log4cplus in my android application. Because I
>> am a newbie in android platform, i have some problems.
>>
>> In win32 platform , the fileappender will put the log file in the exe
>> directory ,but in the android virtual device , I can't find the log file.
>>
>> In win32 project ,the consoleappender will output the log to the
>> console ,but in the andriod application, the log didn't output in the
>> logcat window, it's puzzled me a lot .
>>
>> Can some one get into the same troble before? please help me.

-- 
VZ

Re: [Log4cplus-devel] [log4cplus:bugs] #290 How to use log4cplus in android device

[Vladimir \Equidamoid\ S. <equ...@gm...>]

Hi laiyierjiangsu,

I'm using log4cplus in crossplatform android/ios app.
The first option is to write your own appender. The simpliest one 
contains just one overridded method:
 > void LogcatAppender::append(const 
log4cplus::spi::InternalLoggingEvent &event){
 > log4cplus::tstring txt = formatEvent(event);
 > __android_log_write(ANDROID_LOG_WARN, "yourappname", txt.c_str());
 > }
__android_log_write is defined in android/log.h header.

Another way is to use SocketAppender class to send logs over wifi 
connection (I use my laptop as a receiver) and use loggingserver app to 
receive and read them.

Also there is a possibility to redirect app's stdout to logcat ( 
http://stackoverflow.com/questions/10531050/redirect-stdout-to-logcat-in-android-ndk 
) but I haven't tried it.

19.12.2013 17:15 , laiyierjiangsu пишет:
> ------------------------------------------------------------------------
>
> *[bugs:#290] <http://sourceforge.net/p/log4cplus/bugs/290/> How to use 
> log4cplus in android device*
>
> *Status:* open
> *Labels:* android
> *Created:* Thu Dec 19, 2013 01:15 PM UTC by laiyierjiangsu
> *Last Updated:* Thu Dec 19, 2013 01:15 PM UTC
> *Owner:* Václav Zeman
>
> I have integreted the log4cplus in my android application. Because I 
> am a newbie in android platform, i have some problems.
>
> In win32 platform , the fileappender will put the log file in the exe 
> directory ,but in the android virtual device , I can't find the log file.
>
> In win32 project ,the consoleappender will output the log to the 
> console ,but in the andriod application, the log didn't output in the 
> logcat window, it's puzzled me a lot .
>
> Can some one get into the same troble before? please help me.
>
> ------------------------------------------------------------------------
>
> Sent from sourceforge.net because 
> log...@li... is subscribed to 
> https://sourceforge.net/p/log4cplus/bugs/
>
> To unsubscribe from further messages, a project admin can change 
> settings at https://sourceforge.net/p/log4cplus/admin/bugs/options. 
> Or, if this is a mailing list, you can unsubscribe from the mailing list.
>
>
>
> ------------------------------------------------------------------------------
> Rapidly troubleshoot problems before they affect your business. Most IT
> organizations don't have a clear picture of how application performance
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>
>
> _______________________________________________
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> https://lists.sourceforge.net/lists/listinfo/log4cplus-devel

-- 
Best regards,
Vladimir

Re: [Log4cplus-devel] log4cplus rolling file appender

[Václav Z. <vha...@gm...>]

On 17 December 2013 15:08, Vadim Kuras <vad...@gm...> wrote:
> On Tue, Dec 17, 2013 at 3:52 PM, Václav Zeman <vha...@gm...> wrote:
>>
>> On 17 December 2013 14:15, Vadim Kuras wrote:
>> > Hi,
>> >
>> > When multiple processes write the the log file, the backups are not
>> > created/deleted.
>> >
>> > Is that a known issue?
>> I am assuming you are using Windows. If you are using Windows then
>> yes, it is a known issue. It is caused by Windows file
>> sharing/locking.
> It that going to be fixed one day?

I have some part of the fix done in the form of a custom file stream
that opens the file with FILE_SHARE_DELETE sharing flag set, which
should allow deleting and renaming of open files. It needs some more
testing and integration into the actual log4cplus code base and
FileAppender code.

I am attaching the source just in case anybody wants to beat me to it.

-- 
VZ

Re: [Log4cplus-devel] static linking

[Václav Z. <vha...@gm...>]

On 12/02/2013 12:26 AM, CanisMajorWuff wrote:
> Hi,
> 
> Is it possible to compile the library to static archive and get static 
> linking with it. I use cmake to build the project.
There is BUILD_SHARED_LIBS that is set to ON by default. You would have
to unset it to get static libraries out of the CMake build.

-- 
VZ

[Log4cplus-devel] static linking

[CanisMajorWuff <can...@gm...>]

Hi,

Is it possible to compile the library to static archive and get static 
linking with it. I use cmake to build the project.

Thanks.

Re: [Log4cplus-devel] pattern option for short function names

[Václav Z. <vha...@gm...>]

On 11/27/2013 04:43 PM, Ciummo, Lawrence wrote:
> Hi: Can we get a pattern option similar to %M that causes just the
> function name to be listed instead of the full signature function
> name and parameter list.  It appears that log4cplus uses the
> __pretty_function__ - in some cases the __function__ short name would
> be preferable.

Please try the attached patch. It will allow you to override the
LOG4CPLUS_MACRO_FUNCTION() macro by your own variant.

-- 
VZ

[Log4cplus-devel] pattern option for short function names

[Ciummo, L. <Law...@em...>]

Hi:
Can we get a pattern option similar to %M that causes just the function name to be listed instead of the full signature function name and parameter list.  It appears that log4cplus uses the  __pretty_function__ - in some cases the __function__ short name would be preferable.

Thanks
Larry 

Re: [Log4cplus-devel] License incompatibility

[Václav Z. <vha...@gm...>]

On 25 November 2013 13:15, Polhodzik Peter (ext) wrote:
> Hi,
>
>
>
> Is there a special reason that log4cplus is fine with different GNU GPL
> licensed files in the Apache licensed OS? On Apache site I read they are
> incompatible.
>
>
>
> GNU GPL v3 with exceptions, for example:
>
>
>
> \log4cplus-1.1.2\m4\ax_append_flag.m4
>
> \log4cplus-1.1.2\m4\ax_compiler_vendor.m4
>
> \log4cplus-1.1.2\m4\ax_pthread.m4
>
> \log4cplus-1.1.2\m4\ax_cflags_warn_all.m4
>
> \log4cplus-1.1.2\m4\ax_cflags_sun_option.m4
>
> \log4cplus-1.1.2\m4\ax_type_socklen_t.m4
>
> \log4cplus-1.1.2\m4\ax_cflags_gcc_option.m4
>
> \log4cplus-1.1.2\m4\ax_cflags_aix_option.m4

IANAL, so I am not sure if and what problem is there. The files
mentioned above are distributed with the log4cplus source so I think
the GPL side of things is covered and adhered to. The macros contain
an exception that removes the GPL coverage from the resulting
configure script. This email thread seems to support my view of the
licensing issue:
http://lists.gnu.org/archive/html/automake/2009-03/msg00031.html

I am not aware of any part of log4cplus binaries or headers that would
be covered by GPL, thus the resulting binary is not covered by GPL,
only by ASL 2.0 and by 2-BSD.

Whether or not ASL 2.0 is anyhow violated, I cannot tell. However I do
not think it is the case. You should probably ask a real IP lawyer
about this if you really need an authoritative answer.

-- 
VZ

Re: [Log4cplus-devel] Dual or multiple licensed?

[Polhodzik P. (ext) <Pet...@ev...>]

All right, I take the whole as ASL 2.0

Thank you VZ

Peter

-----Original Message-----
From: Václav Zeman [mailto:vha...@gm...] 
Sent: Monday, November 25, 2013 12:52 PM
To: Polhodzik Peter (ext)
Cc: log...@li...
Subject: Re: [Log4cplus-devel] Dual or multiple licensed?

On 25 November 2013 12:14, Polhodzik Peter (ext) wrote:
> Hi,
>
>
>
> Is log4cplus
>
> ·         dual licensed à BSD 2 clause or Apache 2.0, or
>
> ·         multiple licensed à both BSD 2 clause and Apache 2.0?
This one, I think. There are source files licensed under the ASL 2.0 and other source files licensed under the two clause BSD license.
AFAIK, IANAL, if you treat the whole as ASL 2.0, everything should be fine.

--
VZ

[Log4cplus-devel] License incompatibility

[Polhodzik P. (ext) <Pet...@ev...>]

Hi,

Is there a special reason that log4cplus is fine with different GNU GPL licensed files in the Apache licensed OS? On Apache site<http://www.apache.org/legal/resolved.html> I read they are incompatible.

GNU GPL v3 with exceptions, for example:

\log4cplus-1.1.2\m4\ax_append_flag.m4
\log4cplus-1.1.2\m4\ax_compiler_vendor.m4
\log4cplus-1.1.2\m4\ax_pthread.m4
\log4cplus-1.1.2\m4\ax_cflags_warn_all.m4
\log4cplus-1.1.2\m4\ax_cflags_sun_option.m4
\log4cplus-1.1.2\m4\ax_type_socklen_t.m4
\log4cplus-1.1.2\m4\ax_cflags_gcc_option.m4
\log4cplus-1.1.2\m4\ax_cflags_aix_option.m4

Thank you,
Peter

Re: [Log4cplus-devel] Dual or multiple licensed?

[Václav Z. <vha...@gm...>]

On 25 November 2013 12:14, Polhodzik Peter (ext) wrote:
> Hi,
>
>
>
> Is log4cplus
>
> ·         dual licensed à BSD 2 clause or Apache 2.0, or
>
> ·         multiple licensed à both BSD 2 clause and Apache 2.0?
This one, I think. There are source files licensed under the ASL 2.0
and other source files licensed under the two clause BSD license.
AFAIK, IANAL, if you treat the whole as ASL 2.0, everything should be
fine.

-- 
VZ

[Log4cplus-devel] Dual or multiple licensed?

[Polhodzik P. (ext) <Pet...@ev...>]

Hi,

Is log4cplus

·         dual licensed --> BSD 2 clause or Apache 2.0, or

·         multiple licensed --> both BSD 2 clause and Apache 2.0?

Thank you,

Üdvözlettel / Best Regards,

Péter POLHODZIK

Re: [Log4cplus-devel] RollingFileAppender in Multi threading based application

[qwerty m. <qwe...@gm...>]

Team

Thanks for your answer. I do have some more questions regarding cleaning up
log resources.

To say more precise, ours is a sync product. So in server side both backup
and restore will happen in parallel. Say you register to an account 'A'.
This account 'A' has three devices D1, D2 and D3. Whenever files modified
from any device say D1, server initiates restore to the other devices D2
and D3.

Coming to the threads in server side. We do have 3 threads for each device
for upload and 2 threads for handling download in server side. Initially we
planned to add log for each device. But it might lead to huge number of
files considering if a customer has 50 accounts registered having n number
of devices.

We have a static map in server side with combined key
(A+D1)(Account+Device). Thread object will be saved corresponding to this
key value. The thread will get completed only after 15 min of idle time. If
during the idle time, any sync actions triggered for that account, it will
either use the already created thread or will create new thread and proceed
with that.

So we planned to have single log for each account for both upload and
download process for all devices under the same.

Since threads are running at device level and logging happens at account
level, I have to make sure I close appender object associated with that
account so I as to avoid handle leak issues.

Is there any other better way of handling clean up case ?

Regards,
Prabu


On Wed, Nov 20, 2013 at 9:31 PM, Václav Zeman <vha...@gm...> wrote:

> On 20 November 2013 12:34, qwerty mobile wrote:
> > Team,
> >
> > I am new to this mailing list. I don't have any prior knowledge on log4j
> as
> > well. I want to use this log4cplus in our multi threading based larger
> > application.
> >
> > I have some questions for implementing RollingFileAppender in multi
> > threading application.
> >
> > Ours is a small backup application written in C++ having both client and
> > server side components. Multiple clients can connect to the server
> > simultaneously and send their backup data. I want to add logs for
> debugging
> > in server side.
> >
> > This is my idea. I will have separate log file for each backup
> processing in
> > the server side assuming backup name is unique here. Three threads will
> be
> > involved in the server side for processing every backup received from the
> > client side.
> >
> > Can I share the Logger object between the threads processing single
> backup
> > in the server side ?.
>
> Yes, you can do that. Assuming log4cplus has been configured as thread
> aware (--enable-threads configure switch; Windows builds are always
> thread by default), appenders are thread safe.
>
> > I had planned to achieve this by using a static map
> > having backup name as key and Logger object as value here. And then from
> > each thread, I will get this logger object from the map and then call the
> > logging macros as below,
> >
> > LOG4CPLUS_XX(LoggerObj, LogMessage); # This happens with the same logger
> > object from multiple threads.
>
> This should be fine.
>
> >
> > Do I have to use any mutex if I share the same logger object between
> > different threads processing same backup ?.
>
> No, the appenders manage mutual exclusion between threads internally.
>
> >
> > I have read from some forums that RollingFileAppender does synchronous
> write
> > operations. Please confirm the same.
>
> Yes, this is true.
>
> >
> > If you could also point me some examples for my case, it will be very
> > helpful.
> >
> > Thanks in advance,
> > Prabu
>
> --
> VZ
>

[Log4cplus-devel] Change formatting in pattern for %M

[Ciummo, L. <Law...@em...>]

Hi:

When I use %M in an appender pattern, I get very long functions names...
11-22 11:11:42,937.199 [140100012795648] TRACE - Entering... debug=0 [satl_scsi_implementer.cpp virtual SCSI_Command* SATL_SCSI_Implementer::create_command().

Is there a way to get %M to just put in the function name from __FUNCTION__ vs using the output from __PRETTY_FUNCTION__, which seems to add the full signature of a function.  This is x86 gnu.

Thanks
Larry C

Re: [Log4cplus-devel] RollingFileAppender in Multi threading based application

[Václav Z. <vha...@gm...>]

On 20 November 2013 12:34, qwerty mobile wrote:
> Team,
>
> I am new to this mailing list. I don't have any prior knowledge on log4j as
> well. I want to use this log4cplus in our multi threading based larger
> application.
>
> I have some questions for implementing RollingFileAppender in multi
> threading application.
>
> Ours is a small backup application written in C++ having both client and
> server side components. Multiple clients can connect to the server
> simultaneously and send their backup data. I want to add logs for debugging
> in server side.
>
> This is my idea. I will have separate log file for each backup processing in
> the server side assuming backup name is unique here. Three threads will be
> involved in the server side for processing every backup received from the
> client side.
>
> Can I share the Logger object between the threads processing single backup
> in the server side ?.

Yes, you can do that. Assuming log4cplus has been configured as thread
aware (--enable-threads configure switch; Windows builds are always
thread by default), appenders are thread safe.

> I had planned to achieve this by using a static map
> having backup name as key and Logger object as value here. And then from
> each thread, I will get this logger object from the map and then call the
> logging macros as below,
>
> LOG4CPLUS_XX(LoggerObj, LogMessage); # This happens with the same logger
> object from multiple threads.

This should be fine.

>
> Do I have to use any mutex if I share the same logger object between
> different threads processing same backup ?.

No, the appenders manage mutual exclusion between threads internally.

>
> I have read from some forums that RollingFileAppender does synchronous write
> operations. Please confirm the same.

Yes, this is true.

>
> If you could also point me some examples for my case, it will be very
> helpful.
>
> Thanks in advance,
> Prabu

-- 
VZ

[Log4cplus-devel] RollingFileAppender in Multi threading based application

[qwerty m. <qwe...@gm...>]

Team,

I am new to this mailing list. I don't have any prior knowledge on log4j as
well. I want to use this log4cplus in our multi threading based larger
application.

I have some questions for implementing RollingFileAppender in multi
threading application.

Ours is a small backup application written in C++ having both client and
server side components. Multiple clients can connect to the server
simultaneously and send their backup data. I want to add logs for debugging
in server side.

This is my idea. I will have separate log file for each backup processing
in the server side assuming backup name is unique here. Three threads will
be involved in the server side for processing every backup received from
the client side.

Can I share the Logger object between the threads processing single backup
in the server side ?. I had planned to achieve this by using a static map
having backup name as key and Logger object as value here. And then from
each thread, I will get this logger object from the map and then call the
logging macros as below,

LOG4CPLUS_XX(LoggerObj, LogMessage); # This happens with the same logger
object from multiple threads.

Do I have to use any mutex if I share the same logger object between
different threads processing same backup ?.

I have read from some forums that RollingFileAppender does synchronous
write operations. Please confirm the same.

If you could also point me some examples for my case, it will be very
helpful.

Thanks in advance,
Prabu

Re: [Log4cplus-devel] [REQUEST]TODO: Which stuff should I start with?

[Václav Z. <vha...@gm...>]

On 11/01/2013 02:26 PM, Zhen Ren wrote:
> Hi all,
> After learning log4cplus for a period of time, I want to do something
> for this project.
> 
> I read *TODO* file in src directory, and find there is a list of stuff
> to do.
> For me,I think I can try *Installer for Debian* And *Colored output for
> per log level*.
> So,does anyone has begun to do this and any advice?
Start with anything that you think is worth improving. A spec file for
Debian would be nice. Notice that there is already one spec file for
Fedora (log4cplus.spec).

-- 
VZ

[Log4cplus-devel] [REQUEST]TODO: Which stuff should I start with?

[Zhen R. <ren...@gm...>]

Hi all,
After learning log4cplus for a period of time, I want to do something for
this project.

I read *TODO* file in src directory, and find there is a list of stuff to
do.
For me,I think I can try *Installer for Debian* And *Colored output for per
log level*.
So,does anyone has begun to do this and any advice?

Thanks.
-- 
Ren Zhen