resources/foma.h

   1 /* Quarn OS
   2  *
   3  * Fixed-size Objects Memory Allocator
   4  *
   5  * Copyright (C) 2008-2009 Pawel Dziepak
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  */
  22
  23 #ifndef _FOMA_H_
  24 #define _FOMA_H_
  25
  26 #include "memm.h"
  27 #include "libs/list.h"
  28 #include "arch/low/general.h"
  29 #include "physmem.h"
  30
  31 namespace resources {
  32         class foma : public memm {
  33         private:
  34                 p<physmem> physical;
  35
  36                 unsigned int memory_size;
  37                 void *start_heap;
  38
  39                 unsigned int *first_block[PAGE_SHIFT + 1];
  40
  41                 void *get_page(int index);
  42
  43                 void *allocate(unsigned int fixed_size, unsigned int size);
  44                 void deallocate(void *ptr, unsigned int fixed_size);
  45         public:
  46 //#if DEBUG_MODE == CONF_YES
  47                 static int used_memory;
  48 //#endif
  49         public:
  50                 foma();
  51
  52                 bool initialize();
  53
  54                 virtual void *allocate_space(unsigned int size);
  55                 virtual void deallocate_space(void *ptr);
  56
  57                 virtual unsigned int get_size(void *ptr) const;
  58
  59                 static void register_type();
  60         };
  61 }
  62
  63 #endif