Forum: GNU Radio Block continues after EOF

Dear List,

I have another problem with stopping my C++ block. My block receives 
blobs
of bytes as messages over the new message passing interface and outputs
them as a byte stream. At some place I receive an EOF message, set a 
flag
and continue to empty my buffer in the work method. Once the buffer is
empty I signal EOF to the flowgraph by returning -1 from general_work.
However after that my work function keeps getting called.

My general_work function looks like this:

int general_work(int noutput_items, gr_vector_int& ninput_items,
gr_vector_const_void_star& input_items, gr_vector_void_star& 
output_items)
{
  printf("work function called\n");

  if(d_stop && d_queue.size() == 0) {
    // signal EOF
    printf("Signal EOF\n");
    return -1;
  }

        int num_out;
  // Generate the actual output
        // ...

  return num_out;
}

And the output I get looks like this:
work function called
work function called
work function called
Signal EOF
work function called
work function called
work function called
work function called
...
Until I stop the whole flowgraph with Ctrl+C

What am I missing here? If I understood correctly the work function 
should
not be called anymore after signalling EOF, since there is by definition
of EOF, nothing more to get.

Yours
Martin

>
>
> work function called
> of EOF, nothing more to get.
>
> Yours
> Martin

Oh boy, starting again with a clear head this morning I found my mistake
almost immediately. In fact I had another instance of the same block
running, so the output I posted was actually from two blocks from which
one exited as expected, the other one kept running.

Sorry for the false alarm,
Martin