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comparison OrthancFramework/Sources/MultiThreading/SharedMessageQueue.h @ 4044:d25f4c0fa160 framework

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splitting code into OrthancFramework and OrthancServer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 10 Jun 2020 20:30:34 +0200
parents Core/MultiThreading/SharedMessageQueue.h@5e26d004838c
children bf7b9edf6b81
comparison
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4043:6c6239aec462 4044:d25f4c0fa160
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
6 *
7 * This program is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation, either version 3 of the
10 * License, or (at your option) any later version.
11 *
12 * In addition, as a special exception, the copyright holders of this
13 * program give permission to link the code of its release with the
14 * OpenSSL project's "OpenSSL" library (or with modified versions of it
15 * that use the same license as the "OpenSSL" library), and distribute
16 * the linked executables. You must obey the GNU General Public License
17 * in all respects for all of the code used other than "OpenSSL". If you
18 * modify file(s) with this exception, you may extend this exception to
19 * your version of the file(s), but you are not obligated to do so. If
20 * you do not wish to do so, delete this exception statement from your
21 * version. If you delete this exception statement from all source files
22 * in the program, then also delete it here.
23 *
24 * This program is distributed in the hope that it will be useful, but
25 * WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
27 * General Public License for more details.
28 *
29 * You should have received a copy of the GNU General Public License
30 * along with this program. If not, see <http://www.gnu.org/licenses/>.
31 **/
32
33
34 #pragma once
35
36 #include "../IDynamicObject.h"
37
38 #include <stdint.h>
39 #include <list>
40 #include <boost/thread.hpp>
41
42 namespace Orthanc
43 {
44 class ORTHANC_PUBLIC SharedMessageQueue : public boost::noncopyable
45 {
46 private:
47 typedef std::list<IDynamicObject*> Queue;
48
49 bool isFifo_;
50 unsigned int maxSize_;
51 Queue queue_;
52 boost::mutex mutex_;
53 boost::condition_variable elementAvailable_;
54 boost::condition_variable emptied_;
55
56 public:
57 explicit SharedMessageQueue(unsigned int maxSize = 0);
58
59 ~SharedMessageQueue();
60
61 // This transfers the ownership of the message
62 void Enqueue(IDynamicObject* message);
63
64 // The caller is responsible to delete the dequeud message!
65 IDynamicObject* Dequeue(int32_t millisecondsTimeout);
66
67 bool WaitEmpty(int32_t millisecondsTimeout);
68
69 bool IsFifoPolicy() const
70 {
71 return isFifo_;
72 }
73
74 bool IsLifoPolicy() const
75 {
76 return !isFifo_;
77 }
78
79 void SetFifoPolicy();
80
81 void SetLifoPolicy();
82
83 void Clear();
84 };
85 }