iLab Neuromorphic Robotics Toolkit  0.1
 All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
BoundedBufferImpl.H
Go to the documentation of this file.
1 /*! @file
2  @author Laurent Itti
3  @copyright GNU Public License (GPL v3)
4  @section License
5  @verbatim
6  // ////////////////////////////////////////////////////////////////////////
7  // The iLab Neuromorphic Robotics Toolkit (NRT) //
8  // Copyright 2010-2012 by the University of Southern California (USC) //
9  // and the iLab at USC. //
10  // //
11  // iLab - University of Southern California //
12  // Hedco Neurociences Building, Room HNB-10 //
13  // Los Angeles, Ca 90089-2520 - USA //
14  // //
15  // See http://ilab.usc.edu for information about this project. //
16  // ////////////////////////////////////////////////////////////////////////
17  // This file is part of The iLab Neuromorphic Robotics Toolkit. //
18  // //
19  // The iLab Neuromorphic Robotics Toolkit is free software: you can //
20  // redistribute it and/or modify it under the terms of the GNU General //
21  // Public License as published by the Free Software Foundation, either //
22  // version 3 of the License, or (at your option) any later version. //
23  // //
24  // The iLab Neuromorphic Robotics Toolkit is distributed in the hope //
25  // that it will be useful, but WITHOUT ANY WARRANTY; without even the //
26  // implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //
27  // PURPOSE. See the GNU General Public License for more details. //
28  // //
29  // You should have received a copy of the GNU General Public License //
30  // along with The iLab Neuromorphic Robotics Toolkit. If not, see //
31  // <http://www.gnu.org/licenses/>. //
32  // ////////////////////////////////////////////////////////////////////////
33  @endverbatim */
34 
35 
36 
37 #ifndef INCLUDE_NRT_CORE_DESIGN_DETAILS_BOUNDEDBUFFERIMPL_H
38 #define INCLUDE_NRT_CORE_DESIGN_DETAILS_BOUNDEDBUFFERIMPL_H
39 
40 // ######################################################################
41 template <class T> inline
43  itsSize(siz), itsEmptySemaphore(siz), itsFullSemaphore(0)
44 { }
45 
46 // ######################################################################
47 template <class T> inline
48 void nrt::BoundedBuffer<T>::push(T const & val)
49 {
50  itsEmptySemaphore.decrement(1);
51 
52  itsMutex.lock();
53  itsQueue.push(val);
54  itsMutex.unlock();
55 
56  itsFullSemaphore.increment(1);
57 }
58 
59 // ######################################################################
60 template <class T> inline
62 {
63  itsFullSemaphore.decrement(1);
64 
65  itsMutex.lock();
66  T val = itsQueue.front();
67  itsQueue.pop();
68  itsMutex.unlock();
69 
70  itsEmptySemaphore.increment(1);
71 
72  return val;
73 }
74 
75 // ######################################################################
76 template <class T> inline
78 { return itsFullSemaphore.count(); }
79 
80 // ######################################################################
81 template <class T> inline
82 size_t const nrt::BoundedBuffer<T>::size() const
83 { return itsSize; }
84 
85 #endif // INCLUDE_NRT_CORE_DESIGN_DETAILS_BOUNDEDBUFFERIMPL_H
86