Mercurial > hg > orthanc-stone
comparison Framework/Toolbox/DownloadStack.h @ 0:351ab0da0150
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Fri, 14 Oct 2016 15:34:11 +0200 |
parents | |
children | 7207a407bcd8 |
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1 /** | |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
5 * | |
6 * This program is free software: you can redistribute it and/or | |
7 * modify it under the terms of the GNU General Public License as | |
8 * published by the Free Software Foundation, either version 3 of the | |
9 * License, or (at your option) any later version. | |
10 * | |
11 * In addition, as a special exception, the copyright holders of this | |
12 * program give permission to link the code of its release with the | |
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
14 * that use the same license as the "OpenSSL" library), and distribute | |
15 * the linked executables. You must obey the GNU General Public License | |
16 * in all respects for all of the code used other than "OpenSSL". If you | |
17 * modify file(s) with this exception, you may extend this exception to | |
18 * your version of the file(s), but you are not obligated to do so. If | |
19 * you do not wish to do so, delete this exception statement from your | |
20 * version. If you delete this exception statement from all source files | |
21 * in the program, then also delete it here. | |
22 * | |
23 * This program is distributed in the hope that it will be useful, but | |
24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
26 * General Public License for more details. | |
27 * | |
28 * You should have received a copy of the GNU General Public License | |
29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
30 **/ | |
31 | |
32 | |
33 #pragma once | |
34 | |
35 #include <vector> | |
36 #include <boost/noncopyable.hpp> | |
37 #include <boost/thread/mutex.hpp> | |
38 | |
39 namespace OrthancStone | |
40 { | |
41 class DownloadStack : public boost::noncopyable | |
42 { | |
43 private: | |
44 static const int NIL = -1; | |
45 | |
46 // This is a doubly-linked list | |
47 struct Node | |
48 { | |
49 int next_; | |
50 int prev_; | |
51 bool dequeued_; | |
52 }; | |
53 | |
54 boost::mutex mutex_; | |
55 std::vector<Node> nodes_; | |
56 int firstNode_; | |
57 | |
58 bool CheckInvariants() const; | |
59 | |
60 void SetTopNodeInternal(unsigned int value); | |
61 | |
62 public: | |
63 DownloadStack(unsigned int size); | |
64 | |
65 ~DownloadStack(); | |
66 | |
67 bool Pop(unsigned int& value); | |
68 | |
69 class Writer : public boost::noncopyable | |
70 { | |
71 private: | |
72 DownloadStack& that_; | |
73 boost::mutex::scoped_lock lock_; | |
74 | |
75 public: | |
76 Writer(DownloadStack& that) : | |
77 that_(that), | |
78 lock_(that.mutex_) | |
79 { | |
80 } | |
81 | |
82 void SetTopNode(unsigned int value); | |
83 | |
84 void SetTopNodePermissive(int value); | |
85 }; | |
86 }; | |
87 } |