Mercurial > hg > orthanc-stone
annotate Resources/Orthanc/Core/MultiThreading/SharedMessageQueue.h @ 208:db70f6c5fa4f
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 11 Apr 2018 16:27:09 +0200 |
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1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
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6 * |
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7 * This program is free software: you can redistribute it and/or |
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8 * modify it under the terms of the GNU General Public License as |
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9 * published by the Free Software Foundation, either version 3 of the |
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10 * License, or (at your option) any later version. |
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11 * |
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12 * In addition, as a special exception, the copyright holders of this |
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13 * program give permission to link the code of its release with the |
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it |
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15 * that use the same license as the "OpenSSL" library), and distribute |
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16 * the linked executables. You must obey the GNU General Public License |
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17 * in all respects for all of the code used other than "OpenSSL". If you |
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18 * modify file(s) with this exception, you may extend this exception to |
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19 * your version of the file(s), but you are not obligated to do so. If |
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20 * you do not wish to do so, delete this exception statement from your |
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21 * version. If you delete this exception statement from all source files |
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22 * in the program, then also delete it here. |
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23 * |
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24 * This program is distributed in the hope that it will be useful, but |
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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27 * General Public License for more details. |
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28 * |
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29 * You should have received a copy of the GNU General Public License |
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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31 **/ |
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32 |
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33 |
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34 #pragma once |
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35 |
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36 #include "../IDynamicObject.h" |
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37 |
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38 #include <stdint.h> |
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39 #include <list> |
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40 #include <boost/thread.hpp> |
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41 |
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42 namespace Orthanc |
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43 { |
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44 class SharedMessageQueue : public boost::noncopyable |
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45 { |
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46 private: |
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47 typedef std::list<IDynamicObject*> Queue; |
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48 |
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49 bool isFifo_; |
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50 unsigned int maxSize_; |
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51 Queue queue_; |
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52 boost::mutex mutex_; |
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53 boost::condition_variable elementAvailable_; |
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54 boost::condition_variable emptied_; |
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55 |
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56 public: |
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57 explicit SharedMessageQueue(unsigned int maxSize = 0); |
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58 |
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59 ~SharedMessageQueue(); |
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60 |
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61 // This transfers the ownership of the message |
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62 void Enqueue(IDynamicObject* message); |
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63 |
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64 // The caller is responsible to delete the dequeud message! |
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65 IDynamicObject* Dequeue(int32_t millisecondsTimeout); |
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66 |
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67 bool WaitEmpty(int32_t millisecondsTimeout); |
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68 |
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69 bool IsFifoPolicy() const |
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70 { |
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71 return isFifo_; |
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72 } |
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73 |
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74 bool IsLifoPolicy() const |
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75 { |
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76 return !isFifo_; |
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77 } |
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78 |
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79 void SetFifoPolicy(); |
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80 |
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81 void SetLifoPolicy(); |
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82 |
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83 void Clear(); |
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84 }; |
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85 } |