1  /* Copyright (C) 2021-2023 Free Software Foundation, Inc.
       2     Contributed by Oracle.
       3  
       4     This file is part of GNU Binutils.
       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 3, or (at your option)
       9     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
      17     along with this program; if not, write to the Free Software
      18     Foundation, 51 Franklin Street - Fifth Floor, Boston,
      19     MA 02110-1301, USA.  */
      20  
      21  #ifndef _HEAPMAP_H
      22  #define _HEAPMAP_H
      23  
      24  #include "dbe_types.h"
      25  #include "vec.h"
      26  
      27  struct HeapObj;
      28  struct HeapChunk;
      29  
      30  typedef struct UnmapChunk
      31  {
      32    long val;
      33    int64_t size;
      34    UnmapChunk *next;
      35  } UnmapChunk;
      36  
      37  class HeapMap
      38  {
      39  public:
      40    HeapMap ();
      41    ~HeapMap ();
      42    void allocate (uint64_t addr, long val);
      43    long deallocate (uint64_t addr);
      44    UnmapChunk *mmap (uint64_t addr, int64_t size, long val);
      45    UnmapChunk *munmap (uint64_t addr, int64_t size);
      46  
      47  private:
      48    void allocateChunk ();
      49    HeapObj *getHeapObj ();
      50    void releaseHeapObj (HeapObj*);
      51    UnmapChunk *process (HeapObj *obj, uint64_t addr, int64_t size);
      52  
      53    HeapChunk *chunks;
      54    HeapObj *empty;
      55    HeapObj **chain;
      56    HeapObj *mmaps;
      57  };
      58  
      59  #endif /* _HEAPMAP_H */