1 /***********************************************************************
2 * *
3 * This software is part of the ast package *
4 * Copyright (c) 1985-2010 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
_STUB_vmclose()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
vmclose(Vmalloc_t * vm)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