semaphore.h

/*
 * semaphore.h
 * This file is part of dbPager Classes Library (DCL)
 *
 * Copyright (c) 2009 Dennis Prochko <wolfsoft@mail.ru>
 *
 * DCL 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 version 3.
 *
 * DCL 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 DCL; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor,
 * Boston, MA  02110-1301  USA
 */

#ifndef _SEMAPHORE_H_
#define _SEMAPHORE_H_

#include <dcl/exception.h>

namespace dbp {


class semaphore_exception: public dbp::exception {
public:
        semaphore_exception(const std::string &msg = "") throw():
          dbp::exception(msg) { }
};

class semaphore_int {
public:
        virtual ~semaphore_int() { }
        virtual void lock() = 0;
        virtual void unlock() = 0;
};


class semaphore: public semaphore_int {
public:
        semaphore();
        virtual ~semaphore();

        virtual void lock();

        virtual void unlock();
private:
        semaphore_int *pimpl;
};

} //namespace

#endif /*_SEMAPHORE_H_*/