GNU Radio C++ API
gr_top_block_impl.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2007,2008 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,
20  * Boston, MA 02110-1301, USA.
21  */
22 
23 #ifndef INCLUDED_GR_TOP_BLOCK_IMPL_H
24 #define INCLUDED_GR_TOP_BLOCK_IMPL_H
25 
26 #include <gr_core_api.h>
27 #include <gr_scheduler.h>
28 #include <gruel/thread.h>
29 
30 /*!
31  *\brief Abstract implementation details of gr_top_block
32  * \ingroup internal
33  *
34  * The actual implementation of gr_top_block. Separate class allows
35  * decoupling of changes from dependent classes.
36  *
37  */
39 {
40 public:
43 
44  // Create and start scheduler threads
45  void start();
46 
47  // Signal scheduler threads to stop
48  void stop();
49 
50  // Wait for scheduler threads to exit
51  void wait();
52 
53  // Lock the top block to allow reconfiguration
54  void lock();
55 
56  // Unlock the top block at end of reconfiguration
57  void unlock();
58 
59  // Dump the flowgraph to stdout
60  void dump();
61 
62 protected:
63 
64  enum tb_state { IDLE, RUNNING };
65 
69 
70  gruel::mutex d_mutex; // protects d_state and d_lock_count
73 
74 private:
75  void restart();
76 };
77 
78 #endif /* INCLUDED_GR_TOP_BLOCK_IMPL_H */