[Discuss-gnuradio] swig use in gnuradio

[陈小惠]

Hi, everyone

 

I want use the hydra architecture for our MAC protocol design.

When I browse hydra code, I see some code like:

 

inline gr_msg_queue_sptr inputQ() const { return d_tx.inputQ(); }

inline gr_msg_queue_sptr ctrlQ() const { return d_rx.ctrlQ(); }

inline gr_msg_queue_sptr outputQ() const { return d_rx.outputQ(); }

 

As I know, gr_msg_queue_sptr use smart pointer of boost, when I build my code like this, and call these function in my python code:

 

m=A.get_queue().delete_head()

 

the error occur:

 

AttributeError :'PySwigObject' object has no attribute 'delete_head'
swig/python detected a memory leak of  type 'gr_msg_queue_sptr *', no destructor found.

 

And if I just use gr_msg_queue for test like below, the delete_head is exist and print is ok:

 

test_queue2 = gr.msg_queue()    
    s = "hello world"
    test_queue2.insert_tail(gr.message_from_string(s))
    k = test_queue2.delete_head()
    print k.to_string()

 

so I want to know, why hydra's code can run successful?

any other work it do for this? as I know, swig do not support pointer to function, how do I handle with these problem?

 

2010-04-05

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Chen Xiao-Hui ( 陈 小惠)
Dept. of Electronics and Information Engineering,
Huazhong University of Science and Technology,
E-mail address: address@hidden or address@hidden

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