Mercurial > hg > octave-nkf
annotate liboctave/oct-mutex.h @ 7936:78400fde223e
Support for backend-to-octave event management
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Thu, 17 Jul 2008 07:58:50 -0400 |
| parents | 5a156ab94dd2 |
| children | 7b8aca1cdf0a |
| rev | line source |
|---|---|
| 7934 | 1 /* |
| 2 | |
| 3 Copyright (C) 2008 Michael Goffioul | |
| 4 | |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 3 of the License, or (at your | |
| 10 option) any later version. | |
| 11 | |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 18 along with Octave; see the file COPYING. If not, see | |
| 19 <http://www.gnu.org/licenses/>. | |
| 20 | |
| 21 */ | |
| 22 | |
| 23 #if !defined (octave_octave_mutex_h) | |
| 24 #define octave_octave_mutex_h 1 | |
| 25 | |
| 26 class | |
| 27 OCTAVE_API | |
| 28 octave_mutex | |
| 29 { | |
| 30 public: | |
| 31 octave_mutex (void); | |
| 32 | |
| 33 octave_mutex (const octave_mutex& m) | |
| 34 { | |
| 35 rep = m.rep; | |
| 36 rep->count++; | |
| 37 } | |
| 38 | |
| 39 virtual ~octave_mutex (void) | |
| 40 { | |
| 41 if (rep && --rep->count == 0) | |
| 42 { | |
| 43 delete rep; | |
| 44 rep = 0; | |
| 45 } | |
| 46 } | |
| 47 | |
| 48 octave_mutex& operator = (const octave_mutex& m) | |
| 49 { | |
| 50 if (rep != m.rep) | |
| 51 { | |
| 52 if (rep && --rep->count == 0) | |
| 53 delete rep; | |
| 54 | |
| 55 rep = m.rep; | |
| 56 rep->count++; | |
| 57 } | |
| 58 | |
| 59 return *this; | |
| 60 } | |
| 61 | |
| 62 virtual void lock (void) | |
| 63 { rep->lock (); } | |
| 64 | |
| 65 virtual void unlock (void) | |
| 66 { rep->unlock (); } | |
| 67 | |
| 68 protected: | |
| 69 explicit octave_mutex (int /* dummy */) | |
| 70 : count (0) { } | |
| 71 | |
| 72 protected: | |
| 73 union | |
| 74 { | |
| 75 octave_mutex *rep; | |
| 76 int count; | |
| 77 }; | |
| 78 }; | |
| 79 | |
| 80 class | |
| 81 octave_autolock | |
| 82 { | |
| 83 public: | |
| 84 octave_autolock (const octave_mutex& m) | |
| 85 : mutex (m) | |
| 86 { | |
| 87 mutex.lock (); | |
| 88 } | |
| 89 | |
| 90 ~octave_autolock (void) | |
| 91 { | |
| 92 mutex.unlock (); | |
| 93 } | |
| 94 | |
| 95 private: | |
|
7936
78400fde223e
Support for backend-to-octave event management
John W. Eaton <jwe@octave.org>
parents:
7934
diff
changeset
|
96 |
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78400fde223e
Support for backend-to-octave event management
John W. Eaton <jwe@octave.org>
parents:
7934
diff
changeset
|
97 // No copying or default constructor! |
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78400fde223e
Support for backend-to-octave event management
John W. Eaton <jwe@octave.org>
parents:
7934
diff
changeset
|
98 octave_autolock (void); |
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78400fde223e
Support for backend-to-octave event management
John W. Eaton <jwe@octave.org>
parents:
7934
diff
changeset
|
99 octave_autolock (const octave_autolock&); |
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78400fde223e
Support for backend-to-octave event management
John W. Eaton <jwe@octave.org>
parents:
7934
diff
changeset
|
100 octave_autolock& operator = (const octave_autolock&); |
| 7934 | 101 |
| 102 private: | |
| 103 octave_mutex mutex; | |
| 104 }; | |
| 105 | |
| 106 #endif |