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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2009 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_vmset(){}
#else
#include "vmhdr.h"
/* Set the control flags for a region.
**
** Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94.
*/
#if __STD_C
int vmset(reg Vmalloc_t* vm, int flags, int on)
#else
int vmset(vm, flags, on)
reg Vmalloc_t* vm; /* region being worked on */
int flags; /* flags must be in VM_FLAGS */
int on; /* !=0 if turning on, else turning off */
#endif
{
reg int mode, inuse;
reg Vmdata_t* vd = vm->data;
if(flags == 0 && on == 0)
return vd->mode;
SETINUSE(vd, inuse);
if(!(vd->mode&VM_TRUST) )
{ if(ISLOCK(vd,0))
{ CLRINUSE(vd, inuse);
return 0;
}
SETLOCK(vd,0);
}
mode = vd->mode;
if(on)
vd->mode |= (flags&VM_FLAGS);
else vd->mode &= ~(flags&VM_FLAGS);
if(vd->mode&(VM_TRACE|VM_MTDEBUG))
vd->mode &= ~VM_TRUST;
CLRLOCK(vd,0);
CLRINUSE(vd, inuse);
return mode;
}
#endif
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