Mercurial > octave-nkf
view liboctave/oct-mutex.h @ 7948:af10baa63915 ss-3-1-50
3.1.50 snapshot
author | John W. Eaton <jwe@octave.org> |
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date | Fri, 18 Jul 2008 17:42:48 -0400 |
parents | 7b8aca1cdf0a |
children | 2c0a0edae596 |
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/* Copyright (C) 2008 Michael Goffioul This file is part of Octave. Octave is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. Octave is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with Octave; see the file COPYING. If not, see <http://www.gnu.org/licenses/>. */ #if !defined (octave_octave_mutex_h) #define octave_octave_mutex_h 1 class OCTAVE_API octave_mutex { public: octave_mutex (void); octave_mutex (const octave_mutex& m) { rep = m.rep; rep->count++; } virtual ~octave_mutex (void) { if (rep && --rep->count == 0) { delete rep; rep = 0; } } octave_mutex& operator = (const octave_mutex& m) { if (rep != m.rep) { if (rep && --rep->count == 0) delete rep; rep = m.rep; rep->count++; } return *this; } virtual void lock (void) { rep->lock (); } virtual void unlock (void) { rep->unlock (); } protected: explicit octave_mutex (int /* dummy */) : rep (0) { } protected: union { octave_mutex *rep; int count; }; }; class octave_autolock { public: octave_autolock (const octave_mutex& m) : mutex (m) { mutex.lock (); } ~octave_autolock (void) { mutex.unlock (); } private: // No copying or default constructor! octave_autolock (void); octave_autolock (const octave_autolock&); octave_autolock& operator = (const octave_autolock&); private: octave_mutex mutex; }; #endif