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*                  Common Public License, Version 1.0                  *
7*                    by AT&T Intellectual Property                     *
8*                                                                      *
9*                A copy of the License is available at                 *
10*            http://www.opensource.org/licenses/cpl1.0.txt             *
11*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
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_vmdisc(){}
25
26#else
27
28#include	"vmhdr.h"
29
30/*	Change the discipline for a region.  The old discipline
31**	is returned.  If the new discipline is NIL then the
32**	discipline is not changed.
33**
34**	Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94.
35*/
36#if __STD_C
37Vmdisc_t* vmdisc(Vmalloc_t* vm, Vmdisc_t* disc)
38#else
39Vmdisc_t* vmdisc(vm, disc)
40Vmalloc_t*	vm;
41Vmdisc_t*	disc;
42#endif
43{
44	Vmdisc_t*	old = vm->disc;
45
46	if(disc)
47	{	if(disc->memoryf != old->memoryf)
48			return NIL(Vmdisc_t*);
49		if(old->exceptf &&
50		   (*old->exceptf)(vm,VM_DISC,(Void_t*)disc,old) != 0 )
51			return NIL(Vmdisc_t*);
52		vm->disc = disc;
53	}
54	return old;
55}
56
57#endif
58