iLab Neuromorphic Robotics Toolkit  0.1
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test-Async.C
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1 /*! @file
2  @author Pezhman Firoozfam
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 //#define NRT_USE_STD_ASYNC
37 //#define NRT_DEBUG_ASYNC
38 #include <nrt/Core/Util/Async.H>
39 #include <nrt/Core/Debugging/Log.H>
40 #include <math.h>
41 #include <unistd.h>
42 
43 int main()
44 {
45  std::vector<std::future<void> > res;
46 
47  NRT_DEBUG("Making 10 async calls");
48  int i = 0;
49  for (; i < 10; ++i)
50  {
51  // Call a little lambda function that just sleeps for a while and then print number i;
52  // Each async call will return a future:
53  res.push_back(nrt::async([=]() { usleep(rand()/1000); NRT_INFO(i); }));
54  }
55 
56  NRT_DEBUG("Waiting for a little while so at least one thread finish");
57  usleep(rand()/1000);
58 
59  NRT_DEBUG("Making 5 async calls");
60  for (int j = i; j < i + 5; ++j)
61  {
62  res.push_back(nrt::async([=]() { usleep(rand()/1000); NRT_INFO(j); }));
63  }
64 
65  NRT_DEBUG("Waiting for all to finish");
66  for (auto & r: res) r.wait();
67 
68  NRT_DEBUG("DONE");
69 
70  return 0;
71 }