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#ifndef LPC_MANAGER_H1103129409_INCLUDE_GUARD_
#define LPC_MANAGER_H1103129409_INCLUDE_GUARD_
/* This file is part of indexlib.
* Copyright (C) 2005 Luís Pedro Coelho <[email protected]>
*
* Indexlib is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation and available as file
* GPL_V2 which is distributed along with indexlib.
*
* Indexlib 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., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of this program with any edition of
* the Qt library by Trolltech AS, Norway (or with modified versions
* of Qt that use the same license as Qt), and distribute linked
* combinations including the two. You must obey the GNU General
* Public License in all respects for all of the code used other than
* Qt. If you modify this file, you may extend this exception to
* your version of the file, but you are not obligated to do so. If
* you do not wish to do so, delete this exception statement from
* your version.
*/
/**
* This gets memory and accesses it.
*
*/
class memory_manager {
public:
virtual ~memory_manager() { }
/**
* Return a reference to the memory at position \idx.
* An important interface bug is that it is not specified how far from \idx you
* can safely access.
*/
virtual const unsigned char* ronly_base( unsigned idx ) const = 0;
/**
* Like \ref ronly_base except you can write on the block
*/
virtual unsigned char* rw_base( unsigned ) const = 0;
/** Returns the size of the block */
virtual unsigned size() const = 0;
/** Resizes the block.
* This invalidates all previously returned pointers
*/
virtual void resize( unsigned ) = 0;
};
template <memory_manager* ( *get_parent )()>
struct thing_manager {
public:
const unsigned char* ronly_base( unsigned idx ) const { return get_parent()->ronly_base( idx ); }
unsigned char* rw_base( unsigned idx ) const { return get_parent()->rw_base( idx ); }
};
#endif /* LPC_MANAGER_H1103129409_INCLUDE_GUARD_ */
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