Questions tagged [log4cxx]

Apache log4cxx is a logging framework for C++ patterned after Apache log4j. Apache log4cxx uses Apache Portable Runtime for most platform-specific code and should be usable on any platform supported by APR. Apache log4cxx is licensed under the Apache License, an open source license certified by the Open Source Initiative.

Apache log4cxx is a logging framework for C++ patterned after Apache log4j. Apache log4cxx uses Apache Portable Runtime for most platform-specific code and should be usable on any platform supported by APR. Apache log4cxx is licensed under the Apache License, an open source license certified by the Open Source Initiative.

Almost every large application includes its own logging or tracing API. Inserting log statements into code is a low-tech method for debugging it. It may also be the only way because debuggers are not always available or applicable. This is usually the case for multithreaded applications and distributed applications at large.

Experience indicates that logging is an important component of the development cycle. It offeres several advantages. It provides precise context about a run of the application. Once inserted into the code, the generation of logging output requires no human intervention. Moreover, log output can be saved in persistent medium to be studied at a later time. In addition to its use in the development cycle, a sufficiently rich logging package can also be viewed as an auditing tool.

Logging does have its drawbacks. It can slow down an application. If too verbose, it can cause scrolling blindness. To alleviate these concerns, log4cxx is designed to be reliable, fast and extensible. Since logging is rarely the main focus of an application, the log4cxx API strives to be simple to understand and to use.

Official Website: http://logging.apache.org/log4cxx/

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how to set configuration of log4cpp for visual studio 2008

i want to use log4cpp library in my code for logging. But,for windows platform i dont know how to configure the library. I am using Visual Studio 2008. Any help will be appreciated.
sonu gupta
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log4cxx: using a named logger other than log4j.rootLogger

I have a properties-based log4cxx called Log4cxxConfig.cfg. In it I added a named logger called log4j.daemon. I also created an appender called QTermDaemonAppender. Here is a portion of the cfg file: log4j.rootLogger=info,…
Kelly Beard
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how to use log4cxx under the Red Hat 7

I am trying to use log4cxx in my c++ project under the system Red Hat 7. So I download it with this command: yum install log4cxx.x86_64 After that, I type this command: rpm -ql log4cxx and get this message:…
Yves
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glibc malloc deadlock during string reserve

From some time I am trying to catch a problem with my product hanging. This is the call stack I got after coredumping the process with gcore: /lib64/libc.so.6 #1 0x00007f36fb339ba6 in _L_lock_12192 () from /lib64/libc.so.6 #2 0x00007f36fb337121 in…
user2026095
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log4j/log4cxx : exclusive 1 to 1 relation between logger and appender

Using the xml configuration of log4cxx (which is identical in configuration to log4j). I want to have a certain logger output exclusively to a specific appender (have it the only logger which outputs to that appender). I found that it's possible to…
Omry Yadan
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Log4cxx SocketAppender leads to application crash

I am using log4cxx and recently started working with SocketAppender from here 1. I use the following: java org.apache.log4j.net.SimpleSocketServer 4712 log4j-server.properties and am able to write logs on the server. I do also have a local…
Raaka
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Writing different levels to different files in log4cxx

I want to have log messages from each log level go to a different file. From the name, LevelMatchFilter seems like what I want, except it seems to not filter anything from a different level. I think the following properties should do that using…
Troy Daniels
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Log4cxx, what purpose does it serve?

I've seen Log4cxx a bit and am confused as to what it's purpose actually is. Originally when I saw Logger I assumed it was a key to access a system (that without it you couldn't get the information that you needed). Though looking more at it, it…
Jen
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log4cxx and clang++: linker errors in project written in C++11

I try to build C++11-project on OS X Lion (10.7.5) with clang++. All is fine, except one problem with log4cxx: after compiling I get these linker errors: Linking CXX executable css.fcg Undefined symbols for architecture x86_64: …
Denis Shevchenko
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Building log4cxx with unixodbc

I have been trying to build log4cxx with unixodbc (I can connect to the database using console), but when trying to build log4cxx --with-ODBC, the ./configure always results in configure: error: unixODBC not found ! I have tried setting my…
Raaka
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log4cxx set log file with daily log

I use log4cxx for my c++ project and I use properties for log config,here is my situation I wanna log my project with daily log file such as log4j.appender.fa.File=./Client{Data}.log Is there any way to reach that?
TommyLike
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undefine reference log4cxx for my library

I started using Qt with log4cxx to create a trace. I created a log class that i call every time i want a log, and putted it into my static tool library for my project. i didn't get any error while building it but when i use the lib i get for every…
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Log4cxx is slow when used without critical section

I am doing performance testing on log4cxx. When I call LOG4CXX_XXXXX directly the following code takes around 10 secs to finish logging everything. But when I enclose the call with boost::lockguard (which I think is a critical section) it takes…
brar
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Object inside class becomes NULL

I have built LOG4CXX lib and DLL and trying to use it in my application Loh.h class Log { public: Log(void); ~Log(void); void Debug(const char *msg); private: static LoggerPtr oLogger; }; Log.cpp LoggerPtr oLogger = NULL; Log::Log() { …
user987316
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Linking static build of Log4cxx on linux fails to find symbols

I've build Log4cxx statically on OpenSuse 12.3, however when I attempt to build it in my Qt project it fails at link time. Depending on the order of apr, apr-util and log4cxx the error varies, however this is what I believe is some of the most…
Lionel
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