/* $Id: bs3-cmn-SlabListAllocEx.c $ */
/** @file
 * BS3Kit - Bs3SlabListAllocEx
 */

/*
 * Copyright (C) 2007-2020 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.
 *
 * The contents of this file may alternatively be used under the terms
 * of the Common Development and Distribution License Version 1.0
 * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
 * VirtualBox OSE distribution, in which case the provisions of the
 * CDDL are applicable instead of those of the GPL.
 *
 * You may elect to license modified versions of this file under the
 * terms and conditions of either the GPL or the CDDL or both.
 */


/*********************************************************************************************************************************
*   Header Files                                                                                                                 *
*********************************************************************************************************************************/
#include "bs3kit-template-header.h"


#undef Bs3SlabListAllocEx
BS3_CMN_DEF(void BS3_FAR *, Bs3SlabListAllocEx,(PBS3SLABHEAD pHead, uint16_t cChunks, uint16_t fFlags))
{
    BS3_ASSERT(!(fFlags & ~BS3_SLAB_ALLOC_F_SAME_TILE));
    if (pHead->cFreeChunks >= cChunks)
    {
        PBS3SLABCTL pCur;
        for (pCur = BS3_XPTR_GET(BS3SLABCTL, pHead->pFirst);
             pCur != NULL;
             pCur = BS3_XPTR_GET(BS3SLABCTL, pCur->pNext))
        {
            if (pCur->cFreeChunks >= cChunks)
            {
                void BS3_FAR *pvRet = Bs3SlabAllocEx(pCur, cChunks, fFlags);
                if (pvRet)
                {
                    pHead->cFreeChunks -= cChunks;
                    return pvRet;
                }
            }
        }
    }
    return NULL;
}

