1 /*********************************************************************** 2 * * 3 * This software is part of the ast package * 4 * Copyright (c) 1985-2007 AT&T Knowledge Ventures * 5 * and is licensed under the * 6 * Common Public License, Version 1.0 * 7 * by AT&T Knowledge Ventures * 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_vmclose(){} 25 26 #else 27 28 #include "vmhdr.h" 29 30 /* Close down a region. 31 ** 32 ** Written by Kiem-Phong Vo, kpv@research.att.com, 01/16/94. 33 */ 34 #if __STD_C 35 int vmclose(Vmalloc_t* vm) 36 #else 37 int vmclose(vm) 38 Vmalloc_t* vm; 39 #endif 40 { 41 Seg_t *seg, *vmseg, *next; 42 Vmalloc_t *v, *last; 43 Vmdata_t* vd = vm->data; 44 int ev = 0; 45 46 if(vm == Vmheap) 47 return -1; 48 49 if(!(vd->mode&VM_TRUST) && ISLOCK(vd,0)) 50 return -1; 51 52 if(vm->disc->exceptf && 53 (ev = (*vm->disc->exceptf)(vm,VM_CLOSE,NIL(Void_t*),vm->disc)) < 0 ) 54 return -1; 55 56 /* make this region inaccessible until it disappears */ 57 vd->mode &= ~VM_TRUST; 58 SETLOCK(vd,0); 59 60 if((vd->mode&VM_MTPROFILE) && _Vmpfclose) 61 (*_Vmpfclose)(vm); 62 63 /* remove from linked list of regions */ 64 for(last = Vmheap, v = last->next; v; last = v, v = v->next) 65 { if(v == vm) 66 { last->next = v->next; 67 break; 68 } 69 } 70 71 if(ev == 0) 72 { vmseg = NIL(Seg_t*); 73 for(seg = vd->seg; seg; seg = next) 74 { next = seg->next; 75 if(seg->extent == seg->size) 76 vmseg = seg; 77 else (*vm->disc->memoryf)(vm,seg->addr,seg->extent,0,vm->disc); 78 } 79 if(vmseg) 80 (*vm->disc->memoryf)(vm,vmseg->addr,vmseg->extent,0,vm->disc); 81 } 82 else CLRLOCK(vd,0); 83 84 vmfree(Vmheap,vm); 85 86 return 0; 87 } 88 89 #endif 90