GNU Radio Manual and C++ API Reference  3.7.9.2
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nop.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2004,2010,2013 Free Software Foundation, Inc.
4  *
5  * This file is part of GNU Radio
6  *
7  * GNU Radio is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 3, or (at your option)
10  * any later version.
11  *
12  * GNU Radio is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with GNU Radio; see the file COPYING. If not, write to
19  * the Free Software Foundation, Inc., 51 Franklin Street,
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21  */
22 
23 #ifndef INCLUDED_GR_NOP_H
24 #define INCLUDED_GR_NOP_H
25 
26 #include <gnuradio/blocks/api.h>
27 #include <gnuradio/block.h>
28 #include <stddef.h> // size_t
29 
30 namespace gr {
31  namespace blocks {
32 
33  /*!
34  * \brief Does nothing. Used for testing only.
35  * \ingroup misc_blk
36  */
37  class BLOCKS_API nop : virtual public block
38  {
39  public:
40  // gr::blocks::nop::sptr
41  typedef boost::shared_ptr<nop> sptr;
42 
43  /*!
44  * Build a nop block.
45  *
46  * \param sizeof_stream_item size of the stream items in bytes.
47  */
48  static sptr make(size_t sizeof_stream_item);
49 
50  virtual int nmsgs_received() const = 0;
51 
52  virtual int ctrlport_test() const = 0;
53  virtual void set_ctrlport_test(int x) = 0;
54  };
55 
56  } /* namespace blocks */
57 } /* namespace gr */
58 
59 #endif /* INCLUDED_GR_NOP_H */
Include this header to use the message passing features.
Definition: logger.h:131
#define BLOCKS_API
Definition: gr-blocks/include/gnuradio/blocks/api.h:30
Does nothing. Used for testing only.
Definition: nop.h:37
boost::shared_ptr< nop > sptr
Definition: nop.h:41
The abstract base class for all 'terminal' processing blocks.A signal processing flow is constructed ...
Definition: block.h:60