Mercurial > hg > orthanc-stone
annotate OrthancStone/Sources/Loaders/ILoadersContext.h @ 1748:b6a6ad64192a
FastParseVector : manually written code to parse strings like 3.1315\-1.2e12\2344.5\123 into boost::numeric::ublas::vector<double> + tests
author | Benjamin Golinvaux <bgo@osimis.io> |
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date | Mon, 22 Feb 2021 14:55:13 +0100 |
parents | 9ac2a65d4172 |
children | 3889ae96d2e9 |
rev | line source |
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1 /** |
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2 * Stone of Orthanc |
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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) 2017-2021 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 Lesser General Public License |
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9 * as published by the Free Software Foundation, either version 3 of |
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10 * the License, or (at your option) any later version. |
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11 * |
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12 * This program is distributed in the hope that it will be useful, but |
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13 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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15 * Lesser General Public License for more details. |
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16 * |
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17 * You should have received a copy of the GNU Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
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20 **/ |
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21 |
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22 |
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23 #pragma once |
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24 |
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25 #include "../Messages/IObserver.h" |
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26 #include "../Messages/IObservable.h" |
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27 #include "../Oracle/IOracleCommand.h" |
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28 |
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29 #include <boost/shared_ptr.hpp> |
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30 |
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31 namespace OrthancStone |
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32 { |
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33 class ILoadersContext : public boost::noncopyable |
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34 { |
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35 public: |
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36 class ILock : public boost::noncopyable |
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37 { |
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38 public: |
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39 virtual ~ILock() |
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40 { |
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41 } |
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42 |
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43 /** |
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44 * This method is useful for loaders that must be able to |
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45 * re-lock the Stone loaders context in the future (for instance |
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46 * to schedule new commands once some command is processed). |
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47 **/ |
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48 virtual ILoadersContext& GetContext() const = 0; |
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49 |
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50 /** |
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51 * Get a reference to the observable against which a loader must |
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52 * listen to be informed of messages issued by the oracle once |
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53 * some command is processed. |
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54 **/ |
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55 virtual IObservable& GetOracleObservable() const = 0; |
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56 |
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57 /** |
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58 * Schedule a new command for further processing by the |
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59 * oracle. The "receiver" argument indicates to which object the |
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60 * notification messages are sent by the oracle upon completion |
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61 * of the command. The command is possibly not directly sent to |
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62 * the oracle: Instead, an internal "OracleScheduler" object is |
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63 * often used as a priority queue to rule the order in which |
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64 * commands are actually sent to the oracle. Hence the |
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65 * "priority" argument (commands with lower value are executed |
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66 * first). |
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67 **/ |
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68 virtual void Schedule(boost::shared_ptr<IObserver> receiver, |
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69 int priority, |
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70 IOracleCommand* command /* Takes ownership */) = 0; |
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71 |
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72 /** |
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73 * Cancel all the commands that are waiting in the |
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74 * "OracleScheduler" queue and that are linked to the given |
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75 * receiver (i.e. the observer that was specified at the time |
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76 * method "Schedule()" was called). This is useful for real-time |
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77 * processing, as it allows to replace commands that were |
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78 * scheduled in the past by more urgent commands. |
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79 * |
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80 * Note that this call does not affect commands that would have |
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81 * already be sent to the oracle. As a consequence, the receiver |
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82 * might still receive messages that were sent to the oracle |
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83 * before the cancellation (be prepared to handle such |
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84 * messages). |
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85 **/ |
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86 virtual void CancelRequests(boost::shared_ptr<IObserver> receiver) = 0; |
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87 |
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88 /** |
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89 * Same as "CancelRequests()", but targets all the receivers. |
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90 **/ |
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91 virtual void CancelAllRequests() = 0; |
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92 |
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93 /** |
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94 * Add a reference to the given observer in the Stone loaders |
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95 * context. This can be used to match the lifetime of a loader |
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96 * with the lifetime of the Stone context: This is useful if |
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97 * your Stone application does not keep a reference to the |
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98 * loader by itself (typically in global promises), which would |
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99 * make the loader disappear as soon as the scope of the |
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100 * variable is left. |
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101 **/ |
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102 virtual void AddLoader(boost::shared_ptr<IObserver> loader) = 0; |
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103 |
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104 /** |
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105 * Returns the number of commands that were scheduled and |
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106 * processed using the "Schedule()" method. By "processed" |
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107 * commands, we refer to the number of commands that were either |
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108 * executed by the oracle, or canceled by the user. So the |
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109 * counting sequences are monotonically increasing over time. |
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110 **/ |
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111 virtual void GetStatistics(uint64_t& scheduledCommands, |
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112 uint64_t& processedCommands) = 0; |
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113 }; |
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114 |
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115 virtual ~ILoadersContext() |
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116 { |
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117 } |
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118 |
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119 /** |
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120 * Locks the Stone loaders context, to give access to its |
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121 * underlying features. This is important for Stone applications |
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122 * running in a multi-threaded environment, for which a global |
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Sebastien Jodogne <s.jodogne@gmail.com>
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123 * mutex is locked. |
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124 **/ |
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125 virtual ILock* Lock() = 0; |
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126 }; |
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127 } |