ObjLock.h

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#ifndef __ObjLock_h__
#define __ObjLock_h__
/* Copyright (C) 2003 Herbert Straub
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
#include <string>
#ifndef USE_FLOCK
#include <fcntl.h>
#endif

class ObjLock {
      public:
        ObjLock(const string & name);

        ~ObjLock();

        enum { locked, not_locked };

        void lockShBlk(void);

        int lockShNoBlk(void);

        void lockExBlk(void);

        int lockExNoBlk(void);

        void unlock(void);

      private:
         string name;
        int fd;
#ifndef USE_FLOCK
        struct flock l;
#endif

};

#endif

---