Mercurial > octave
annotate liboctave/util/oct-mutex.h @ 33634:4a70f390c85e default tip @
maint: Merge stable to default.
author | Markus Mützel <markus.muetzel@gmx.de> |
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date | Tue, 28 May 2024 15:25:54 +0200 |
parents | 4b601ca024d5 |
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1 //////////////////////////////////////////////////////////////////////// |
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2 // |
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3 // Copyright (C) 2008-2024 The Octave Project Developers |
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4 // |
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5 // See the file COPYRIGHT.md in the top-level directory of this |
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6 // distribution or <https://octave.org/copyright/>. |
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7 // |
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8 // This file is part of Octave. |
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9 // |
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10 // Octave is free software: you can redistribute it and/or modify it |
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11 // under the terms of the GNU General Public License as published by |
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12 // the Free Software Foundation, either version 3 of the License, or |
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13 // (at your option) any later version. |
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14 // |
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15 // Octave is distributed in the hope that it will be useful, but |
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16 // WITHOUT ANY WARRANTY; without even the implied warranty of |
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17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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18 // GNU General Public License for more details. |
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19 // |
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20 // You should have received a copy of the GNU General Public License |
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21 // along with Octave; see the file COPYING. If not, see |
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22 // <https://www.gnu.org/licenses/>. |
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23 // |
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24 //////////////////////////////////////////////////////////////////////// |
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26 #if ! defined (octave_oct_mutex_h) |
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27 #define octave_oct_mutex_h 1 |
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29 #include "octave-config.h" |
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30 |
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31 #include <memory> |
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32 |
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33 OCTAVE_BEGIN_NAMESPACE(octave) |
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34 |
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35 class mutex; |
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36 |
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37 class OCTAVE_API base_mutex |
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38 { |
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39 public: |
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40 friend class mutex; |
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41 |
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42 OCTAVE_DEFAULT_CONSTRUCT_COPY_MOVE (base_mutex) |
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43 |
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44 virtual ~base_mutex () = default; |
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45 |
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46 virtual void lock (); |
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47 |
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48 virtual void unlock (); |
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49 |
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50 virtual bool try_lock (); |
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51 }; |
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53 class OCTAVE_API mutex |
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54 { |
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55 public: |
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56 mutex (); |
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57 |
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58 OCTAVE_DEFAULT_COPY_MOVE_DELETE (mutex) |
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59 |
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60 void lock () |
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61 { |
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62 m_rep->lock (); |
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63 } |
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65 void unlock () |
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66 { |
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67 m_rep->unlock (); |
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68 } |
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70 bool try_lock () |
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71 { |
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72 return m_rep->try_lock (); |
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73 } |
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74 |
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75 protected: |
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76 std::shared_ptr<base_mutex> m_rep; |
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77 }; |
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78 |
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79 class OCTAVE_API autolock |
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80 { |
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81 public: |
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82 autolock (const mutex& m, bool block = true) |
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83 : m_mutex (m), m_lock_result (false) |
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84 { |
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85 if (block) |
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86 { |
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87 m_mutex.lock (); |
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88 m_lock_result = true; |
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89 } |
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90 else |
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91 m_lock_result = m_mutex.try_lock (); |
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92 } |
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94 OCTAVE_DISABLE_CONSTRUCT_COPY_MOVE (autolock) |
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95 |
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96 ~autolock () |
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97 { |
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98 if (m_lock_result) |
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99 m_mutex.unlock (); |
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100 } |
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101 |
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102 bool ok () const { return m_lock_result; } |
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103 |
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104 operator bool () const { return ok (); } |
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106 private: |
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107 |
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108 mutex m_mutex; |
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109 |
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110 bool m_lock_result; |
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111 }; |
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112 |
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113 |
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114 class OCTAVE_API thread |
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115 { |
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116 public: |
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117 |
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118 static void init (); |
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119 |
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120 static bool is_thread (); |
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121 }; |
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122 |
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123 OCTAVE_END_NAMESPACE(octave) |
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124 |
7934 | 125 #endif |