[Discuss-gnuradio] Question regarding destructor and member functions in C++ source

[Milo Wong]

Hi all,

I was wondering why most of the gnuradio blocks don't have destructor 
even though they have constructor defined in C++ source(e.g. 
gr_ofdm_mapper_bcv.cc)? Is that due to the features of smart pointer, 
boost::shared_ptr<T> ?

Another question is : What is the difference between using 
"class_name::work()" and "class_name::general_work()". I guess it might 
depend on their base class (gr_block and gr_sync_block) where they are 
derived from. I have been using gr_sync_block as my base class. But I 
don't know the reason for that. How do I know which base class I should use?

Thanks in advance.

Milo