Re: [Log4cplus-devel] ConfigureAndWatchThread

[Václav H. <v.h...@sh...>]

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Koller, Georg wrote:
> Hello,
>  
> when I use ConfigureAndWatchThread in my application and change the
> configuration file, while my application is running, my application hangs.
> Any ideas?
> The code is printed below.
>  
> Regards,
> Georg
>  
>  
> #include <log4cplus/logger.h>
> #include <log4cplus/configurator.h>
>  
> #include <unistd.h>
>  
> using namespace log4cplus;
>  
> int
> main
> (int argc, char* argv [])
> {
>  ConfigureAndWatchThread
> configureThread(LOG4CPLUS_TEXT("logger.properties"), 5 * 1000);
>  
>  Logger log1 = Logger::getInstance("test.log_1");
>  LOG4CPLUS_FATAL(log1,"fatal message");
> }
>  
Is this just an example or does the real code also return from the
main() function while the ConfigureAndWatchThread is still running? If
the real code looks like this example then the problem is in the code:

The application might seem to be hung because even though the main
thread has returned from main(), the ConfigureAndWatchThread is still
running.

Also, after you return from main() all static variables get destroyed.
log4cplus uses them for various singletons. Accessing them in the
ConfigureAndWatchThread after that is undefined behaviour.

- --
VH
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