[Log4cplus-devel] problems displaying thread name (or understanding it)

[Alexander D. <po...@le...>]

Hei hei, 

I started playing around with log4cplus and wondered why I don't get
thread names displayed. Before digging to deep in my own code I had a
look at the test programs in the log4cplus source, namely thread_test. I
compiled log4cplus 1.1.1 on an up to date Debian Wheezy without any
special options when calling ./configure and get this (and more):

% ./thread_test
main Priority: NOTSET
0 [3049802608] WARN test.TestThread <> - Thread-3 TestThread.run()-
Starting...
0 [3049802608] TRACE SlowObject <Thread-3 loop> - ENTER:
SlowObject::doSomething()
1 [3049802608] INFO SlowObject <Thread-3 loop> - Actually doing
something...
1 [3058195312] WARN test.TestThread <> - Thread-2 TestThread.run()-
Starting...
1 [3058195312] TRACE SlowObject <Thread-2 loop> - ENTER:
SlowObject::doSomething()
1 [3066588016] WARN test.TestThread <> - Thread-1 TestThread.run()-
Starting...
1 [3066588016] TRACE SlowObject <Thread-1 loop> - ENTER:
SlowObject::doSomething()
1 [3074980720] WARN test.TestThread <> - Thread-0 TestThread.run()-
Starting...
2 [3074980720] TRACE SlowObject <Thread-0 loop> - ENTER:
SlowObject::doSomething()
3 [3049802608] INFO SlowObject <Thread-3 loop> - Actually doing
something...1, 2, 3, testing...DONE
3 [3058195312] INFO SlowObject <Thread-2 loop> - Actually doing
something...
3 [3049802608] TRACE SlowObject <Thread-3 loop> - EXIT: 
SlowObject::doSomething()
3 [3049802608] TRACE SlowObject <Thread-3 loop> - ENTER:
SlowObject::doSomething()
3 [3058195312] INFO SlowObject <Thread-2 loop> - Actually doing
something...1, 2, 3, testing...DONE
3 [3066588016] INFO SlowObject <Thread-1 loop> - Actually doing
something...

The part in the <> seems to contain the thread name set in
tests/thread_test/main.cxx line 100. Looking at layout.cxx a line in
this layout starts with timestamp, has some thread info in square
brackets, log level, logger name, NDC in <> and finally the message
itself.

This looks a little different than the example output on
http://log4cplus.sourceforge.net/docs/html/classlog4cplus_1_1TTCCLayout.html
which seems to have no number in square brackets but some name and no
<> at all. What's the number in the square brackets?

This question aims how I can set some kind of thread name without using
the log4cplus thread class which is displayed with TTCC layout (or maybe
PatternLayout), but maybe I should understand the example first. 

Greets
Alex

-- 
»With the first link, the chain is forged. The first speech censured,
the first thought forbidden, the first freedom denied, chains us all
irrevocably.« (Jean-Luc Picard, quoting Judge Aaron Satie)
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