/***********************************************************************

*                                                                      *

*               This software is part of the ast package               *

*          Copyright (c) 1985-2012 AT&T Intellectual Property          *

*                      and is licensed under the                       *

*                 Eclipse Public License, Version 1.0                  *

*                    by AT&T Intellectual Property                     *

*                                                                      *

*                A copy of the License is available at                 *

*          http://www.eclipse.org/org/documents/epl-v10.html           *

*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

*                                                                      *

*              Information and Software Systems Research               *

*                            AT&T Research                             *

*                           Florham Park NJ                            *

*                                                                      *

*                 Glenn Fowler <gsf@research.att.com>                  *

*                  David Korn <dgk@research.att.com>                   *

*                   Phong Vo <kpv@research.att.com>                    *

*                                                                      *

***********************************************************************/

/*

 * standalone mini vmalloc interface

 */

#ifndef _VMALLOC_H

#define _VMALLOC_H		1

#define vmalloc(v,n)		_vm_resize(v,(void*)0,n)

#define vmalign(v,n,a)		_vm_resize(v,(void*)0,n)

#define vmclose(v)		_vm_close(v)

#define vmfree(v,p)

#define vmnewof(v,o,t,n,x)	(t*)_vm_resize(v,(void*)o,sizeof(t)*(n)+(x))

#define vmopen(a,b,c)		_vm_open()

#define VM_CHUNK		(32*1024)

#define VM_ALIGN		16

typedef struct Vmchunk_s

{

	struct Vmchunk_s*	next;

	char			align[VM_ALIGN - sizeof(struct Vmchunk_s*)];

	char			data[VM_CHUNK - VM_ALIGN];

} Vmchunk_t;

typedef struct Vmalloc_s

{

	Vmchunk_t		base;		

	Vmchunk_t*		current;

	char*			data;

	long			size;

	long			last;

} Vmalloc_t;

extern Vmalloc_t*		Vmregion;

extern int			_vm_close(Vmalloc_t*);

extern Vmalloc_t*		_vm_open(void);

extern void*			_vm_resize(Vmalloc_t*, void*, unsigned long);

#endif