dlls/imagehlp/internal.c

   1 /*
   2  *      IMAGEHLP library
   3  *
   4  *      Copyright 1998  Patrik Stridvall
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "winbase.h"
  22 #include "winerror.h"
  23 #include "windef.h"
  24 #include "wine/debug.h"
  25 #include "imagehlp.h"
  26
  27 /***********************************************************************
  28  *              InitializeListHead
  29  */
  30 VOID InitializeListHead(PLIST_ENTRY pListHead)
  31 {
  32   pListHead->Flink = pListHead;
  33   pListHead->Blink = pListHead;
  34 }
  35
  36 /***********************************************************************
  37  *              InsertHeadList
  38  */
  39 VOID InsertHeadList(PLIST_ENTRY pListHead, PLIST_ENTRY pEntry)
  40 {
  41   pEntry->Blink = pListHead;
  42   pEntry->Flink = pListHead->Flink;
  43   pListHead->Flink = pEntry;
  44 }
  45
  46 /***********************************************************************
  47  *              InsertTailList
  48  */
  49 VOID InsertTailList(PLIST_ENTRY pListHead, PLIST_ENTRY pEntry)
  50 {
  51   pEntry->Flink = pListHead;
  52   pEntry->Blink = pListHead->Blink;
  53   pListHead->Blink = pEntry;
  54 }
  55
  56 /***********************************************************************
  57  *              IsListEmpty
  58  */
  59 BOOLEAN IsListEmpty(PLIST_ENTRY pListHead)
  60 {
  61   return !pListHead;
  62 }
  63
  64 /***********************************************************************
  65  *              PopEntryList
  66  */
  67 PSINGLE_LIST_ENTRY PopEntryList(PSINGLE_LIST_ENTRY pListHead)
  68 {
  69   pListHead->Next = NULL;
  70   return pListHead;
  71 }
  72
  73 /***********************************************************************
  74  *              PushEntryList
  75  */
  76 VOID PushEntryList(
  77   PSINGLE_LIST_ENTRY pListHead, PSINGLE_LIST_ENTRY pEntry)
  78 {
  79   pEntry->Next=pListHead;
  80 }
  81
  82 /***********************************************************************
  83  *              RemoveEntryList
  84  */
  85 VOID RemoveEntryList(PLIST_ENTRY pEntry)
  86 {
  87   pEntry->Flink->Blink = pEntry->Blink;
  88   pEntry->Blink->Flink = pEntry->Flink;
  89   pEntry->Flink = NULL;
  90   pEntry->Blink = NULL;
  91 }
  92
  93 /***********************************************************************
  94  *              RemoveHeadList
  95  */
  96 PLIST_ENTRY RemoveHeadList(PLIST_ENTRY pListHead)
  97 {
  98   PLIST_ENTRY p = pListHead->Flink;
  99
 100   if(p != pListHead)
 101     {
 102       RemoveEntryList(pListHead);
 103       return p;
 104     }
 105   else
 106     {
 107       pListHead->Flink = NULL;
 108       pListHead->Blink = NULL;
 109       return NULL;
 110     }
 111 }
 112
 113 /***********************************************************************
 114  *              RemoveTailList
 115  */
 116 PLIST_ENTRY RemoveTailList(PLIST_ENTRY pListHead)
 117 {
 118   RemoveHeadList(pListHead->Blink);
 119   if(pListHead != pListHead->Blink)
 120     return pListHead;
 121   else
 122     return NULL;
 123 }