dlls/imagehlp/internal.c

   1 /*
   2  *      IMAGEHLP library
   3  *
   4  *      Copyright 1998  Patrik Stridvall
   5  */
   6
   7 #include "winbase.h"
   8 #include "winerror.h"
   9 #include "windef.h"
  10 #include "debugtools.h"
  11 #include "imagehlp.h"
  12
  13 /***********************************************************************
  14  *              InitializeListHead
  15  */
  16 VOID InitializeListHead(PLIST_ENTRY pListHead)
  17 {
  18   pListHead->Flink = pListHead;
  19   pListHead->Blink = pListHead;
  20 }
  21
  22 /***********************************************************************
  23  *              InsertHeadList
  24  */
  25 VOID InsertHeadList(PLIST_ENTRY pListHead, PLIST_ENTRY pEntry)
  26 {
  27   pEntry->Blink = pListHead;
  28   pEntry->Flink = pListHead->Flink;
  29   pListHead->Flink = pEntry;
  30 }
  31
  32 /***********************************************************************
  33  *              InsertTailList
  34  */
  35 VOID InsertTailList(PLIST_ENTRY pListHead, PLIST_ENTRY pEntry)
  36 {
  37   pEntry->Flink = pListHead;
  38   pEntry->Blink = pListHead->Blink;
  39   pListHead->Blink = pEntry;
  40 }
  41
  42 /***********************************************************************
  43  *              IsListEmpty
  44  */
  45 BOOLEAN IsListEmpty(PLIST_ENTRY pListHead)
  46 {
  47   return !pListHead;
  48 }
  49
  50 /***********************************************************************
  51  *              PopEntryList
  52  */
  53 PSINGLE_LIST_ENTRY PopEntryList(PSINGLE_LIST_ENTRY pListHead)
  54 {
  55   pListHead->Next = NULL;
  56   return pListHead;
  57 }
  58
  59 /***********************************************************************
  60  *              PushEntryList
  61  */
  62 VOID PushEntryList(
  63   PSINGLE_LIST_ENTRY pListHead, PSINGLE_LIST_ENTRY pEntry)
  64 {
  65   pEntry->Next=pListHead;
  66 }
  67
  68 /***********************************************************************
  69  *              RemoveEntryList
  70  */
  71 VOID RemoveEntryList(PLIST_ENTRY pEntry)
  72 {
  73   pEntry->Flink->Blink = pEntry->Blink;
  74   pEntry->Blink->Flink = pEntry->Flink;
  75   pEntry->Flink = NULL;
  76   pEntry->Blink = NULL;
  77 }
  78
  79 /***********************************************************************
  80  *              RemoveHeadList
  81  */
  82 PLIST_ENTRY RemoveHeadList(PLIST_ENTRY pListHead)
  83 {
  84   PLIST_ENTRY p = pListHead->Flink;
  85
  86   if(p != pListHead)
  87     {
  88       RemoveEntryList(pListHead);
  89       return p;
  90     }
  91   else
  92     {
  93       pListHead->Flink = NULL;
  94       pListHead->Blink = NULL;
  95       return NULL;
  96     }
  97 }
  98
  99 /***********************************************************************
 100  *              RemoveTailList
 101  */
 102 PLIST_ENTRY RemoveTailList(PLIST_ENTRY pListHead)
 103 {
 104   RemoveHeadList(pListHead->Blink);
 105   if(pListHead != pListHead->Blink)
 106     return pListHead;
 107   else
 108     return NULL;
 109 }