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/** @file
*
* VBox Host Guest Shared Memory Interface (HGSMI).
* Host part helpers.
*/
/*
* Copyright (C) 2006-2010 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*/
#include "HGSMIHostHlp.h"
void hgsmiListAppend (HGSMILIST *pList, HGSMILISTENTRY *pEntry)
{
AssertPtr(pEntry);
Assert(pEntry->pNext == NULL);
if (pList->pTail)
{
Assert (pList->pTail->pNext == NULL);
pList->pTail->pNext = pEntry;
}
else
{
Assert (pList->pHead == NULL);
pList->pHead = pEntry;
}
pList->pTail = pEntry;
}
void hgsmiListRemove (HGSMILIST *pList, HGSMILISTENTRY *pEntry, HGSMILISTENTRY *pPrev)
{
AssertPtr(pEntry);
if (pEntry->pNext == NULL)
{
Assert (pList->pTail == pEntry);
pList->pTail = pPrev;
}
else
{
/* Do nothing. The *pTail is not changed. */
}
if (pPrev == NULL)
{
Assert (pList->pHead == pEntry);
pList->pHead = pEntry->pNext;
}
else
{
pPrev->pNext = pEntry->pNext;
}
pEntry->pNext = NULL;
}
HGSMILISTENTRY * hgsmiListRemoveAll (HGSMILIST *pList, HGSMILISTENTRY ** ppTail /* optional */)
{
HGSMILISTENTRY * pHead = pList->pHead;
if (ppTail)
*ppTail = pList->pTail;
hgsmiListInit (pList);
return pHead;
}
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