1/***********************************************************************
2*                                                                      *
3*               This software is part of the ast package               *
4*          Copyright (c) 1985-2011 AT&T Intellectual Property          *
5*                      and is licensed under the                       *
6*                 Eclipse Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*          http://www.eclipse.org/org/documents/epl-v10.html           *
11*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *
12*                                                                      *
13*              Information and Software Systems Research               *
14*                            AT&T Research                             *
15*                           Florham Park NJ                            *
16*                                                                      *
17*                 Glenn Fowler <gsf@research.att.com>                  *
18*                  David Korn <dgk@research.att.com>                   *
19*                   Phong Vo <kpv@research.att.com>                    *
20*                                                                      *
21***********************************************************************/
22#if defined(_UWIN) && defined(_BLD_ast)
23
24void _STUB_vmregion(){}
25
26#else
27
28#include	"vmhdr.h"
29
30/*	Return the containing region of an allocated piece of memory.
31**	Beware: this only works with Vmbest, Vmdebug and Vmprofile.
32**
33**	10/31/2009: Add handling of shared/persistent memory regions.
34**
35**	Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94.
36*/
37#if __STD_C
38Vmalloc_t* vmregion(Void_t* addr)
39#else
40Vmalloc_t* vmregion(addr)
41Void_t*	addr;
42#endif
43{
44	Vmalloc_t	*vm;
45	Vmdata_t	*vd;
46
47	if(!addr)
48		return NIL(Vmalloc_t*);
49
50	vd = SEG(BLOCK(addr))->vmdt;
51
52	_vmlock(NIL(Vmalloc_t*), 1);
53	for(vm = Vmheap; vm; vm = vm->next)
54		if(vm->data == vd)
55			break;
56	_vmlock(NIL(Vmalloc_t*), 0);
57
58	return vm;
59}
60
61#endif
62