[Discuss-gnuradio] Calling general_work when one of the inputs are available

[Ramazan Çetin]

Hello gnuradio users,

I want to implement a general block which have two inputs and one 
output. The general_work of this block should be called when one of the 
inputs is available. My task is just tagging and copying inputs to the 
output.

But my block is called any time, even if there is no input. I just want 
to call it when there is data one of the inputs.

I have tried to implement forecast() function;

    void
    rtag_impl::forecast (int noutput_items, gr_vector_int 
&ninput_items_required)
    {
        ninput_items_required[0] = noutput_items;
        ninput_items_required[1] = noutput_items;
    }

But here, my block waits both of the inputs. Is there any way to 
implement or condition in forecast()? (That means, call general_work 
when there is data on input 0 or input 1)

Best regards.

Ramazan