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// -*-c++-*-
/* $Id: bbuddy.h,v 1.7 1999/10/24 09:57:03 dm Exp $ */
/*
*
* Copyright (C) 1998 David Mazieres (dm@uun.org)
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#ifndef _BBUDDY_H_
#define _BBUDDY_H_ 1
#include "opnew.h"
extern "C" const char bytepop[];
class bbfree;
class bbuddy {
typedef off_t totsize_t;
totsize_t totsize;
const u_int log2minalloc;
const u_int log2maxalloc;
bbfree *const freemaps;
totsize_t spaceleft;
bbfree &fm (size_t sn);
bool _check_pos (u_int sn, size_t pos, bool set);
public:
bbuddy (totsize_t totsize, size_t minalloc, size_t maxalloc);
~bbuddy ();
off_t alloc (size_t);
void dealloc (off_t, size_t);
totsize_t space () const { return spaceleft; }
totsize_t gettotsize () const { return totsize; }
void settotsize (totsize_t totsize);
size_t maxalloc () const { return 1 << log2maxalloc; }
void _check ();
};
#endif /* _BBUDDY_H_ */
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