1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2008 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 24 void _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 36 int vmset(reg Vmalloc_t* vm, int flags, int on) 37 #else 38 int vmset(vm, flags, on) 39 reg Vmalloc_t* vm; /* region being worked on */ 40 int flags; /* flags must be in VM_FLAGS */ 41 int 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