investigating the perldebugger shows some nice features like producing stack traces of every call
tst.pl: 
sub a {
 b(@_)
}
 
sub b {
 return map { $_ +1 }  @_;
}
 
print a (1,2,3)

[download]
interactive example (could be fully automated) 
perl -d tst.pl
Loading DB routines from perl5db.pl version 1.3
Editor support enabled.
 
Enter h or `h h' for help, or `man perldebug' for more help.
 
Package /tmp/tst.pl.
 DB<3> o f=31
              frame = '31'
 DB<4> c
in  @=main::a(1, 2, 3) from /tmp/tst.pl:9
 in  @=main::b(1, 2, 3) from /tmp/tst.pl:2
 out @=main::b(1, 2, 3) from /tmp/tst.pl:2
 list context return from main::b:
0  2
1  3
2  4
out @=main::a(1, 2, 3) from /tmp/tst.pl:9
list context return from main::a:
0  2
1  3
2  4

[download]

my only problem is how to avoid in deep tracing of third-party modules I use.

is there any option where I can provide a pattern which modules/subs/file-pathes to trace and which to ignore?

Could also be useful for automatic distinction between step-in /step-over when single-stepping...

---The Perlman

In reply to perldb: Howto trace only "my" modules? by The Perlman

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