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_vmset(){} 25 26#else 27 28#include "vmhdr.h" 29 30 31/* Set the control flags for a region. 32** 33** Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94. 34*/ 35#if __STD_C 36int vmset(reg Vmalloc_t* vm, int flags, int on) 37#else 38int vmset(vm, flags, on) 39reg Vmalloc_t* vm; /* region being worked on */ 40int flags; /* flags must be in VM_FLAGS */ 41int on; /* !=0 if turning on, else turning off */ 42#endif 43{ 44 reg int mode, inuse; 45 reg Vmdata_t* vd = vm->data; 46 47 if(flags == 0 && on == 0) 48 return vd->mode; 49 50 SETINUSE(vd, inuse); 51 if(!(vd->mode&VM_TRUST) ) 52 { if(ISLOCK(vd,0)) 53 { CLRINUSE(vd, inuse); 54 return 0; 55 } 56 SETLOCK(vd,0); 57 } 58 59 mode = vd->mode; 60 61 if(on) 62 vd->mode |= (flags&VM_FLAGS); 63 else vd->mode &= ~(flags&VM_FLAGS); 64 65 if(vd->mode&(VM_TRACE|VM_MTDEBUG)) 66 vd->mode &= ~VM_TRUST; 67 68 CLRLOCK(vd,0); 69 CLRINUSE(vd, inuse); 70 71 return mode; 72} 73 74#endif 75