vmalloc.h revision 3f54fd611f536639ec30dd53c48e5ec1897cc7d9
/***********************************************************************
* *
* 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