Line data    Source code

       1             : // Copyright (c) 2019  Made to Order Software Corp.  All Rights Reserved
       2             : //
       3             : // https://snapwebsites.org/project/snapdatabase
       4             : // contact@m2osw.com
       5             : //
       6             : // This program is free software; you can redistribute it and/or modify
       7             : // it under the terms of the GNU General Public License as published by
       8             : // the Free Software Foundation; either version 2 of the License, or
       9             : // (at your option) any later version.
      10             : //
      11             : // This program is distributed in the hope that it will be useful,
      12             : // but WITHOUT ANY WARRANTY; without even the implied warranty of
      13             : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      14             : // GNU General Public License for more details.
      15             : //
      16             : // You should have received a copy of the GNU General Public License along
      17             : // with this program; if not, write to the Free Software Foundation, Inc.,
      18             : // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
      19             : #pragma once
      20             : 
      21             : 
      22             : /** \file
      23             :  * \brief Block representing free space that can be allocated.
      24             :  *
      25             :  * This block is a _free_ blok meaning that it is not current used for
      26             :  * anything. It is part of the list of free blocks (linked list).
      27             :  */
      28             : 
      29             : // self
      30             : //
      31             : #include    "snapdatabase/data/structure.h"
      32             : 
      33             : 
      34             : 
      35             : namespace snapdatabase
      36             : {
      37             : 
      38             : 
      39             : 
      40             : class table;
      41             : typedef std::shared_ptr<table>      table_pointer_t;
      42             : 
      43           0 : class block_free_block
      44             :     : public block
      45             : {
      46             : public:
      47             :     typedef std::shared_ptr<block_free_block>       pointer_t;
      48             : 
      49             :                                 block_free_block(dbfile::pointer_t f, reference_t offset);
      50             : 
      51             :     reference_t                 get_next_free_block() const;
      52             :     void                        set_next_free_block(reference_t offset);
      53             :     void                        clear_block();
      54             : 
      55             : private:
      56             : };
      57             : 
      58             : 
      59             : 
      60             : } // namespace snapdatabase
      61             : // vim: ts=4 sw=4 et