vmregion.c revision 3e14f97f673e8a630f076077de35afdd43dc1587
/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2010 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* 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> *
* *
***********************************************************************/
#if defined(_UWIN) && defined(_BLD_ast)
void _STUB_vmregion(){}
#else
#include "vmhdr.h"
/* Return the containing region of an allocated piece of memory.
** Beware: this only works with Vmbest, Vmdebug and Vmprofile.
**
** 10/31/2009: Add handling of shared/persistent memory regions.
**
** Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94.
*/
#if __STD_C
Vmalloc_t* vmregion(Void_t* addr)
#else
Vmalloc_t* vmregion(addr)
Void_t* addr;
#endif
{
Vmalloc_t *vm;
Vmdata_t *vd;
if(!addr)
return NIL(Vmalloc_t*);
vd = SEG(BLOCK(addr))->vmdt;
for(vm = Vmheap; vm; vm = vm->next)
if(vm->data == vd)
break;
return vm;
}
#endif