1da2e3ebdSchin /*********************************************************************** 2da2e3ebdSchin * * 3da2e3ebdSchin * This software is part of the ast package * 4*b30d1939SAndy Fiddaman * Copyright (c) 1985-2012 AT&T Intellectual Property * 5da2e3ebdSchin * and is licensed under the * 6*b30d1939SAndy Fiddaman * Eclipse Public License, Version 1.0 * 77c2fbfb3SApril Chin * by AT&T Intellectual Property * 8da2e3ebdSchin * * 9da2e3ebdSchin * A copy of the License is available at * 10*b30d1939SAndy Fiddaman * http://www.eclipse.org/org/documents/epl-v10.html * 11*b30d1939SAndy Fiddaman * (with md5 checksum b35adb5213ca9657e911e9befb180842) * 12da2e3ebdSchin * * 13da2e3ebdSchin * Information and Software Systems Research * 14da2e3ebdSchin * AT&T Research * 15da2e3ebdSchin * Florham Park NJ * 16da2e3ebdSchin * * 17da2e3ebdSchin * Glenn Fowler <gsf@research.att.com> * 18da2e3ebdSchin * David Korn <dgk@research.att.com> * 19da2e3ebdSchin * Phong Vo <kpv@research.att.com> * 20da2e3ebdSchin * * 21da2e3ebdSchin ***********************************************************************/ 22da2e3ebdSchin /* 23*b30d1939SAndy Fiddaman * standalone mini vmalloc interface 24da2e3ebdSchin */ 25da2e3ebdSchin 26*b30d1939SAndy Fiddaman #ifndef _VMALLOC_H 27*b30d1939SAndy Fiddaman #define _VMALLOC_H 1 28da2e3ebdSchin 29*b30d1939SAndy Fiddaman #define vmalloc(v,n) _vm_resize(v,(void*)0,n) 30*b30d1939SAndy Fiddaman #define vmalign(v,n,a) _vm_resize(v,(void*)0,n) 31*b30d1939SAndy Fiddaman #define vmclose(v) _vm_close(v) 32*b30d1939SAndy Fiddaman #define vmfree(v,p) 33*b30d1939SAndy Fiddaman #define vmnewof(v,o,t,n,x) (t*)_vm_resize(v,(void*)o,sizeof(t)*(n)+(x)) 34*b30d1939SAndy Fiddaman #define vmopen(a,b,c) _vm_open() 35da2e3ebdSchin 36*b30d1939SAndy Fiddaman #define VM_CHUNK (32*1024) 37*b30d1939SAndy Fiddaman #define VM_ALIGN 16 38da2e3ebdSchin 39*b30d1939SAndy Fiddaman typedef struct Vmchunk_s 40da2e3ebdSchin { 41*b30d1939SAndy Fiddaman struct Vmchunk_s* next; 42*b30d1939SAndy Fiddaman char align[VM_ALIGN - sizeof(struct Vmchunk_s*)]; 43*b30d1939SAndy Fiddaman char data[VM_CHUNK - VM_ALIGN]; 44*b30d1939SAndy Fiddaman } Vmchunk_t; 45da2e3ebdSchin 46*b30d1939SAndy Fiddaman typedef struct Vmalloc_s 47da2e3ebdSchin { 48*b30d1939SAndy Fiddaman Vmchunk_t base; 49*b30d1939SAndy Fiddaman Vmchunk_t* current; 50*b30d1939SAndy Fiddaman char* data; 51*b30d1939SAndy Fiddaman long size; 52*b30d1939SAndy Fiddaman long last; 53*b30d1939SAndy Fiddaman } Vmalloc_t; 54da2e3ebdSchin 55*b30d1939SAndy Fiddaman extern Vmalloc_t* Vmregion; 56*b30d1939SAndy Fiddaman 57*b30d1939SAndy Fiddaman extern int _vm_close(Vmalloc_t*); 58*b30d1939SAndy Fiddaman extern Vmalloc_t* _vm_open(void); 59*b30d1939SAndy Fiddaman extern void* _vm_resize(Vmalloc_t*, void*, unsigned long); 60da2e3ebdSchin 61*b30d1939SAndy Fiddaman #endif 62