OK, some clarification:

If we ignore the changing of log levels, everything works as expected.

And here is the program flow:

program start -> initialize logger <<Log::Log4perl::init("log.properti
+es")>> -> get the logger <<my $logger = get_logger()>> -> use fork() 
+to create threads -> wait for threads to die

[download]
child start -> change NDC <<Log::Log4perl::NDC->push($NDC)>> -> do the
+ir thing, including using customer modules

[download]

The modules use my $logger = get_logger() to get the logger. Messages from the modules use the correct NDC as configured for each thread.

Let's say my module is as simple as:

use Log::Log4perl (get_logger);
my $logger = get_logger();
sub sayHello
{
  $logger->info("Hello world!");
}

[download]

Doesn't that mean that every time a thread executes that sayHello sub, the module gets the logger then logs a message?

If so, why doesn't it get the new logging level? If I start with level WARN specified in my config file, I don't expect to see the message in my logs. That part works just fine. If I then use the signal to lower the level to INFO, I would expect to see the message start appearing in the log. It doesn't.

In reply to Re^2: log level in modules by Anonymous Monk
in thread log level in modules by Anonymous Monk

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