1da2e3ebdSchin /***********************************************************************
2da2e3ebdSchin * *
3da2e3ebdSchin * This software is part of the ast package *
4*3e14f97fSRoger A. Faulkner * Copyright (c) 1985-2010 AT&T Intellectual Property *
5da2e3ebdSchin * and is licensed under the *
6da2e3ebdSchin * Common Public License, Version 1.0 *
77c2fbfb3SApril Chin * by AT&T Intellectual Property *
8da2e3ebdSchin * *
9da2e3ebdSchin * A copy of the License is available at *
10da2e3ebdSchin * http://www.opensource.org/licenses/cpl1.0.txt *
11da2e3ebdSchin * (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
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 #if defined(_UWIN) && defined(_BLD_ast)
23da2e3ebdSchin
_STUB_vmset()24da2e3ebdSchin void _STUB_vmset(){}
25da2e3ebdSchin
26da2e3ebdSchin #else
27da2e3ebdSchin
28da2e3ebdSchin #include "vmhdr.h"
29da2e3ebdSchin
30da2e3ebdSchin
31da2e3ebdSchin /* Set the control flags for a region.
32da2e3ebdSchin **
33da2e3ebdSchin ** Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94.
34da2e3ebdSchin */
35da2e3ebdSchin #if __STD_C
vmset(reg Vmalloc_t * vm,int flags,int on)36da2e3ebdSchin int vmset(reg Vmalloc_t* vm, int flags, int on)
37da2e3ebdSchin #else
38da2e3ebdSchin int vmset(vm, flags, on)
39da2e3ebdSchin reg Vmalloc_t* vm; /* region being worked on */
40da2e3ebdSchin int flags; /* flags must be in VM_FLAGS */
41da2e3ebdSchin int on; /* !=0 if turning on, else turning off */
42da2e3ebdSchin #endif
43da2e3ebdSchin {
447c2fbfb3SApril Chin reg int mode, inuse;
45da2e3ebdSchin reg Vmdata_t* vd = vm->data;
46da2e3ebdSchin
47da2e3ebdSchin if(flags == 0 && on == 0)
48da2e3ebdSchin return vd->mode;
49da2e3ebdSchin
507c2fbfb3SApril Chin SETINUSE(vd, inuse);
51da2e3ebdSchin if(!(vd->mode&VM_TRUST) )
52da2e3ebdSchin { if(ISLOCK(vd,0))
537c2fbfb3SApril Chin { CLRINUSE(vd, inuse);
54da2e3ebdSchin return 0;
557c2fbfb3SApril Chin }
56da2e3ebdSchin SETLOCK(vd,0);
57da2e3ebdSchin }
58da2e3ebdSchin
59da2e3ebdSchin mode = vd->mode;
60da2e3ebdSchin
61da2e3ebdSchin if(on)
62da2e3ebdSchin vd->mode |= (flags&VM_FLAGS);
63da2e3ebdSchin else vd->mode &= ~(flags&VM_FLAGS);
64da2e3ebdSchin
65da2e3ebdSchin if(vd->mode&(VM_TRACE|VM_MTDEBUG))
66da2e3ebdSchin vd->mode &= ~VM_TRUST;
67da2e3ebdSchin
68da2e3ebdSchin CLRLOCK(vd,0);
697c2fbfb3SApril Chin CLRINUSE(vd, inuse);
70da2e3ebdSchin
71da2e3ebdSchin return mode;
72da2e3ebdSchin }
73da2e3ebdSchin
74da2e3ebdSchin #endif
75