ref: 516fc276f112baf0bd4508596598aed49929bde9
dir: /src/_z_zone.h/
/*
Copyright (C) 1994-1995 Apogee Software, Ltd.
Copyright (C) 2002-2015 icculus.org, GNU/Linux port
Copyright (C) 2017-2018 Steven LeVesque
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
of the License, 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.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#ifndef _z_zone_private
#define _z_zone_private
#include "develop.h"
#define MINFRAGMENT 64
#define DPMI_INT 0x31
#define MAXMEMORYSIZE 900000000
#define LEVELZONESIZE 250000
// memory storage data types
#define MEMORYPRETAG (0x1a2b3c4d)
#define MEMORYPOSTTAG (0x9f8e7d6b)
typedef struct memblock_s
{
int size; // including the header and possibly tiny fragments
void **user; // NULL if a free block
int tag; // purgelevel
struct memblock_s *next, *prev;
} memblock_t;
typedef struct
{
int size; // total bytes malloced, including header
memblock_t blocklist; // start / end cap for linked list
memblock_t *rover;
} memzone_t;
#endif