how is the thread name set in log4cplus?

Question

I'm evaluating log4cplus for a multi threaded C++ application on linux. The TTCCLayout and the PatternLayout allow the thread name to be displayed. In my tests there was never a name but just a meaningless number. I'm not using the thread class of log4cplus. How does log4cplus determine this thread name and is it possible to set it myself?

Answer 1

Log4cplus (as of version 1.1.1 or earlier) does not have any PatternLayout formatter for thread names. It only has two thread related formatters:

• %t - prints thread ID; for *nix, it is whatever value pthread_t represents, usually an int value or a pointer value

• %T - prints alternative thread ID; for Linux, prints the value returned by syscall (SYS_gettid)

There is definitely some room for improvement.