source: to-imperative/trunk/runtime/pxx_heap.hh @ 146

// $Source$
// $Revision: 146 $
// $Date: 2002-08-29 17:48:12 +0000 (Thu, 29 Aug 2002) $

#ifndef __pxx_heap_hh__
#define __pxx_heap_hh__

#include "pxx_common.hh"

namespace pxx
{

class Heap
{
  //
  // heap start address
  void* const start;
  //
  // heap maximum size
  size_t const max_size;
  //
  // an order of maximum size
  size_t const max_order;
  //
  // heap current size
  size_t current_size;
  //
  // an order of current size
  size_t current_order;
  //
  //
  int fd;
  //
  //
  bool need_remap;

public:
  //
  // constructor
  Heap(
    void* const _start,
    size_t const _max_size,
    size_t _init_size = page_size,
    int _fd = 0,
    bool _need_remap = true
  );
  //
  // destructor
  ~Heap();
  //
  // expands a heap
  void expand( unsigned _order = 1 );
  //
  //
  void *get_start() const { return start; }
  //
  //
  size_t get_current_order() const { return current_order; }
};

}

#endif // __pxx_heap_hh__