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_vmsegment(){} 25 26 #else 27 28 #include "vmhdr.h" 29 30 /* Get the segment containing this address 31 ** 32 ** Written by Kiem-Phong Vo, kpv@research.att.com, 02/07/95 33 */ 34 35 #if __STD_C 36 Void_t* vmsegment(Vmalloc_t* vm, Void_t* addr) 37 #else 38 Void_t* vmsegment(vm, addr) 39 Vmalloc_t* vm; /* region */ 40 Void_t* addr; /* address */ 41 #endif 42 { 43 reg Seg_t* seg; 44 reg Vmdata_t* vd = vm->data; 45 reg int inuse; 46 47 SETINUSE(vd, inuse); 48 if(!(vd->mode&VM_TRUST)) 49 { if(ISLOCK(vd,0)) 50 { CLRINUSE(vd, inuse); 51 return NIL(Void_t*); 52 } 53 SETLOCK(vd,0); 54 } 55 56 for(seg = vd->seg; seg; seg = seg->next) 57 if((Vmuchar_t*)addr >= (Vmuchar_t*)seg->addr && 58 (Vmuchar_t*)addr < (Vmuchar_t*)seg->baddr ) 59 break; 60 61 CLRLOCK(vd,0); 62 CLRINUSE(vd, inuse); 63 return seg ? (Void_t*)seg->addr : NIL(Void_t*); 64 } 65 66 #endif 67