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/*
Copyright (C) 1996 John W. Eaton
This file is part of Octave.
Octave is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.
Octave 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 Octave; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#if !defined (octave_oct_alloc_h)
#define octave_oct_alloc_h 1
class
octave_allocator
{
public:
octave_allocator (size_t item_sz, int grow_sz = 256)
: head (0), grow_size (grow_sz),
item_size (item_sz > sizeof (link *) ? item_sz : sizeof (link *))
{ }
// Get an object from the free list, possibly increasing the size of
// the free list.
void *alloc (size_t size);
// Put objects back on the free list.
void free (void *p, size_t size);
private:
// Structure for internal free list management.
struct link { link *next; };
// Front of the free list.
link *head;
// How many objects to get each time we call the global operator new.
int grow_size;
// The size of each item on the list (or, if that is smaller than
// the size of list*, the size of list*.
size_t item_size;
// How to grow the free list.
bool grow (void);
};
#endif
/*
;;; Local Variables: ***
;;; mode: C++ ***
;;; End: ***
*/
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