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comparison Core/MultiThreading/Semaphore.h @ 2794:f790999a250a

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Semaphore removed from graveyard, SystemToolbox::GetHardwareConcurrency()
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 27 Jul 2018 14:01:02 +0200
parents Resources/Graveyard/Multithreading/Semaphore.h@af7ea91dd4d5
children 497a637366b4
comparison
equal deleted inserted replaced
2793:87b426e54473 2794:f790999a250a
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) 2017-2018 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 <boost/noncopyable.hpp>
37 #include <boost/thread.hpp>
38
39 namespace Orthanc
40 {
41 class Semaphore : public boost::noncopyable
42 {
43 private:
44 unsigned int count_;
45 boost::mutex mutex_;
46 boost::condition_variable condition_;
47
48 void Release();
49
50 void Acquire();
51
52 public:
53 explicit Semaphore(unsigned int count);
54
55 class Locker : public boost::noncopyable
56 {
57 private:
58 Semaphore& that_;
59
60 public:
61 explicit Locker(Semaphore& that) :
62 that_(that)
63 {
64 that_.Acquire();
65 }
66
67 ~Locker()
68 {
69 that_.Release();
70 }
71 };
72 };
73 }