dummylock.h

/*
 *  Copyright (C) 2006  Helmut Grohne
 *
 *  This program 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 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef LIBMUTH_DUMMYLOCK_H
#define LIBMUTH_DUMMYLOCK_H

#ifdef USE_PTHREAD
#error this file must be compiled without -DUSE_PTHREAD
#endif

#include <assert.h>

class DummyLock {
        private:
                bool locked;
        public:
                inline DummyLock() throw() : locked(false) {}
                inline void acquire() throw() {
                                assert(this->locked == false);
                                this->locked = true;
                        }
                inline bool tryacquire() throw() {
                                if(this->locked)
                                        return false;
                                this->locked = true;
                                return true;
                        }
                inline void release() throw() {
                                assert(this->locked == true);
                                this->locked = false;
                        }
                inline ~DummyLock() throw() { assert(this->locked == false); }
};

#endif

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