show fct_name of the function/procedure

Hello,

I need (a very simple construct) to show the fct_name/proc_name 
for the function/procedure.

Example:
create procedure/function bet_process() as
$$
declare
 pid      int  := pg_backend_pid() ; --  it works fine
 fct_name text := pg_fct_name()    ; --  I need it
begin
 -- do s.th like
 -- call log(pid, fct_name, 'my message');
end;
$$ language plpgsql;

Franz