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Annotation of embedaddon/smartmontools/dev_tunnelled.h, revision 1.1

1.1     ! misho       1: /*
        !             2:  * dev_tunnelled.h
        !             3:  *
        !             4:  * Home page of code is: http://smartmontools.sourceforge.net
        !             5:  *
        !             6:  * Copyright (C) 2008 Christian Franke <smartmontools-support@lists.sourceforge.net>
        !             7:  *
        !             8:  * This program is free software; you can redistribute it and/or modify
        !             9:  * it under the terms of the GNU General Public License as published by
        !            10:  * the Free Software Foundation; either version 2, or (at your option)
        !            11:  * any later version.
        !            12:  *
        !            13:  * You should have received a copy of the GNU General Public License
        !            14:  * (for example COPYING); If not, see <http://www.gnu.org/licenses/>.
        !            15:  *
        !            16:  */
        !            17: 
        !            18: #ifndef DEV_TUNNELLED_H
        !            19: #define DEV_TUNNELLED_H
        !            20: 
        !            21: #define DEV_TUNNELLED_H_CVSID "$Id: dev_tunnelled.h,v 1.1 2008/07/25 21:16:00 chrfranke Exp $\n"
        !            22: 
        !            23: #include "dev_interface.h"
        !            24: 
        !            25: /////////////////////////////////////////////////////////////////////////////
        !            26: // tunnelled_device_base
        !            27: 
        !            28: /// Common functionality for all tunnelled_device classes.
        !            29: 
        !            30: class tunnelled_device_base
        !            31: : virtual public /*implements*/ smart_device
        !            32: {
        !            33: protected:
        !            34:   explicit tunnelled_device_base(smart_device * tunnel_dev);
        !            35: 
        !            36: public:
        !            37:   virtual ~tunnelled_device_base() throw();
        !            38: 
        !            39:   virtual bool is_open() const;
        !            40: 
        !            41:   virtual bool open();
        !            42: 
        !            43:   virtual bool close();
        !            44: 
        !            45:   virtual bool owns(const smart_device * dev) const;
        !            46: 
        !            47:   virtual void release(const smart_device * dev);
        !            48: 
        !            49: private:
        !            50:   smart_device * m_tunnel_base_dev;
        !            51: };
        !            52: 
        !            53: 
        !            54: /////////////////////////////////////////////////////////////////////////////
        !            55: // tunnelled_device
        !            56: 
        !            57: /// Implement a device by tunneling through another device
        !            58: 
        !            59: template <class BaseDev, class TunnelDev>
        !            60: class tunnelled_device
        !            61: : public BaseDev,
        !            62:   public tunnelled_device_base
        !            63: {
        !            64: public:
        !            65:   typedef TunnelDev tunnel_device_type;
        !            66: 
        !            67: protected:
        !            68:   explicit tunnelled_device(tunnel_device_type * tunnel_dev)
        !            69:     : smart_device(smart_device::never_called),
        !            70:       tunnelled_device_base(tunnel_dev),
        !            71:       m_tunnel_dev(tunnel_dev)
        !            72:     { }
        !            73: 
        !            74: public:
        !            75:   virtual void release(const smart_device * dev)
        !            76:     {
        !            77:       if (m_tunnel_dev == dev)
        !            78:         m_tunnel_dev = 0;
        !            79:       tunnelled_device_base::release(dev);
        !            80:     }
        !            81: 
        !            82:   tunnel_device_type * get_tunnel_dev()
        !            83:     { return m_tunnel_dev; }
        !            84: 
        !            85:   const tunnel_device_type * get_tunnel_dev() const
        !            86:     { return m_tunnel_dev; }
        !            87: 
        !            88: private:
        !            89:   tunnel_device_type * m_tunnel_dev;
        !            90: };
        !            91: 
        !            92: #endif // DEV_TUNNELLED_H