usr/src/lib/libast/common/vmalloc/vmwalk.c

   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
  24 void _STUB_vmwalk(){}
  25
  26 #else
  27
  28 #include        "vmhdr.h"
  29
  30 /*      Walks all segments created in region(s)
  31 **
  32 **      Written by Kiem-Phong Vo, kpv@research.att.com (02/08/96)
  33 */
  34
  35 #if __STD_C
  36 int vmwalk(Vmalloc_t* vm, int(*segf)(Vmalloc_t*, Void_t*, size_t, Vmdisc_t*, Void_t*), Void_t* handle )
  37 #else
  38 int vmwalk(vm, segf, handle)
  39 Vmalloc_t*      vm;
  40 int(*           segf)(/* Vmalloc_t*, Void_t*, size_t, Vmdisc_t* */);
  41 Void_t*         handle;
  42 #endif
  43 {
  44         reg Seg_t*      seg;
  45         reg int         rv;
  46
  47         if(!vm)
  48         {       for(vm = Vmheap; vm; vm = vm->next)
  49                 {       if(!(vm->data->mode&VM_TRUST) && ISLOCK(vm->data,0) )
  50                                 continue;
  51
  52                         SETLOCK(vm->data,0);
  53                         for(seg = vm->data->seg; seg; seg = seg->next)
  54                         {       rv = (*segf)(vm, seg->addr, seg->extent, vm->disc, handle);
  55                                 if(rv < 0)
  56                                         return rv;
  57                         }
  58                         CLRLOCK(vm->data,0);
  59                 }
  60         }
  61         else
  62         {       if(!(vm->data->mode&VM_TRUST) && ISLOCK(vm->data,0) )
  63                         return -1;
  64
  65                 SETLOCK(vm->data,0);
  66                 for(seg = vm->data->seg; seg; seg = seg->next)
  67                 {       rv = (*segf)(vm, seg->addr, seg->extent, vm->disc, handle);
  68                         if(rv < 0)
  69                                 return rv;
  70                 }
  71                 CLRLOCK(vm->data,0);
  72         }
  73
  74         return 0;
  75 }
  76
  77 #endif