Mercurial > hg > orthanc-stone
annotate Platforms/Generic/Oracle.cpp @ 271:46c5296d867e am-2
OracleWebService and BasicSdlApplicationContext using the same global mutex
author | am@osimis.io |
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date | Thu, 23 Aug 2018 17:12:54 +0200 |
parents | 5412adf19980 |
children | 14ef1227120f |
rev | line source |
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80 | 1 /** |
2 * Stone of Orthanc | |
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics | |
4 * Department, University Hospital of Liege, Belgium | |
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
80 | 6 * |
7 * This program is free software: you can redistribute it and/or | |
8 * modify it under the terms of the GNU Affero General Public License | |
9 * as published by the Free Software Foundation, either version 3 of | |
10 * the License, or (at your option) any later version. | |
11 * | |
12 * This program is distributed in the hope that it will be useful, but | |
13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 * Affero General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Affero General Public License | |
18 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
19 **/ | |
20 | |
21 | |
22 #include "Oracle.h" | |
23 | |
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24 #include <Core/Logging.h> |
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25 #include <Core/MultiThreading/SharedMessageQueue.h> |
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26 #include <Core/OrthancException.h> |
80 | 27 |
28 #include <vector> | |
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29 #include <stdio.h> |
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30 #include <boost/thread/mutex.hpp> |
80 | 31 |
32 namespace OrthancStone | |
33 { | |
34 class Oracle::PImpl | |
35 { | |
36 private: | |
37 enum State | |
38 { | |
39 State_Init, | |
40 State_Started, | |
41 State_Stopped | |
42 }; | |
43 | |
44 boost::mutex oracleMutex_; | |
45 State state_; | |
46 std::vector<boost::thread*> threads_; | |
47 Orthanc::SharedMessageQueue queue_; | |
48 | |
49 static void Worker(PImpl* that) | |
50 { | |
51 for (;;) | |
52 { | |
53 State state; | |
54 | |
55 { | |
56 boost::mutex::scoped_lock lock(that->oracleMutex_); | |
57 state = that->state_; | |
58 } | |
59 | |
60 if (state == State_Stopped) | |
61 { | |
62 break; | |
63 } | |
64 | |
65 std::auto_ptr<Orthanc::IDynamicObject> item(that->queue_.Dequeue(100)); | |
66 if (item.get() != NULL) | |
67 { | |
68 IOracleCommand& command = dynamic_cast<IOracleCommand&>(*item); | |
69 command.Execute(); | |
70 | |
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71 // Random sleeping to test |
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72 //boost::this_thread::sleep(boost::posix_time::milliseconds(50 * (1 + rand() % 10))); |
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73 |
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74 command.Commit(); |
80 | 75 } |
76 } | |
77 } | |
78 | |
79 public: | |
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80 PImpl(unsigned int threadCount) : |
80 | 81 state_(State_Init), |
82 threads_(threadCount) | |
83 { | |
84 } | |
85 | |
86 ~PImpl() | |
87 { | |
88 if (state_ == State_Started) | |
89 { | |
90 LOG(ERROR) << "You should have manually called Oracle::Stop()"; | |
91 Stop(); | |
92 } | |
93 } | |
94 | |
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95 Orthanc::SharedMessageQueue& GetQueue() |
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96 { |
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97 return queue_; |
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98 } |
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99 |
80 | 100 void Submit(IOracleCommand* command) |
101 { | |
102 std::auto_ptr<IOracleCommand> protection(command); | |
103 | |
104 if (command == NULL) | |
105 { | |
106 throw Orthanc::OrthancException(Orthanc::ErrorCode_NullPointer); | |
107 } | |
108 | |
109 boost::mutex::scoped_lock lock(oracleMutex_); | |
110 | |
111 switch (state_) | |
112 { | |
113 case State_Init: | |
114 case State_Started: | |
115 queue_.Enqueue(protection.release()); | |
116 break; | |
117 | |
118 case State_Stopped: | |
119 LOG(ERROR) << "Cannot schedule a request to the Oracle after having " | |
120 << "called Oracle::Stop()"; | |
121 break; | |
122 | |
123 default: | |
124 throw Orthanc::OrthancException(Orthanc::ErrorCode_InternalError); | |
125 } | |
126 | |
127 } | |
128 | |
129 void Start() | |
130 { | |
131 boost::mutex::scoped_lock lock(oracleMutex_); | |
132 | |
133 if (state_ != State_Init) | |
134 { | |
135 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
136 } | |
137 | |
138 for (size_t i = 0; i < threads_.size(); i++) | |
139 { | |
140 threads_[i] = new boost::thread(Worker, this); | |
141 } | |
142 | |
143 state_ = State_Started; | |
144 } | |
145 | |
146 void Stop() | |
147 { | |
148 { | |
149 boost::mutex::scoped_lock lock(oracleMutex_); | |
150 | |
151 if (state_ != State_Started) | |
152 { | |
153 throw Orthanc::OrthancException(Orthanc::ErrorCode_BadSequenceOfCalls); | |
154 } | |
155 | |
156 state_ = State_Stopped; | |
157 } | |
158 | |
159 for (size_t i = 0; i < threads_.size(); i++) | |
160 { | |
161 if (threads_[i] != NULL) | |
162 { | |
163 if (threads_[i]->joinable()) | |
164 { | |
165 threads_[i]->join(); | |
166 } | |
167 | |
168 delete threads_[i]; | |
169 } | |
170 } | |
171 } | |
172 }; | |
173 | |
174 | |
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175 Oracle::Oracle(unsigned int threadCount) : |
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176 pimpl_(new PImpl(threadCount)) |
80 | 177 { |
178 } | |
179 | |
180 void Oracle::Start() | |
181 { | |
182 pimpl_->Start(); | |
183 } | |
184 | |
185 | |
186 void Oracle::Submit(IOracleCommand* command) | |
187 { | |
188 pimpl_->Submit(command); | |
189 } | |
190 | |
191 | |
192 void Oracle::Stop() | |
193 { | |
194 pimpl_->Stop(); | |
195 } | |
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196 |
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197 |
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198 void Oracle::WaitEmpty() |
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199 { |
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200 pimpl_->GetQueue().WaitEmpty(50); |
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201 } |
80 | 202 } |