common/misc/handletable.cpp

	handletable.cpp revision c9968c45b31bd2bf5bb6feb365f86ffba15241d7
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync/* $Id$ */
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync/** @file
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync * IPRT - Handle Tables.
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync */
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync/*
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync * Copyright (C) 2008 Sun Microsystems, Inc.
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync *
9019681d4e9b8399b951793a9dd92b63c195e0eevboxsync * This file is part of VirtualBox Open Source Edition (OSE), as
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync * available from http://www.virtualbox.org. This file is free software;
92a27575521748a392dcd1b996fce55b87411a00vboxsync * you can redistribute it and/or modify it under the terms of the GNU
92a27575521748a392dcd1b996fce55b87411a00vboxsync * General Public License (GPL) as published by the Free Software
92a27575521748a392dcd1b996fce55b87411a00vboxsync * Foundation, in version 2 as it comes in the "COPYING" file of the
92a27575521748a392dcd1b996fce55b87411a00vboxsync * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
92a27575521748a392dcd1b996fce55b87411a00vboxsync * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
92a27575521748a392dcd1b996fce55b87411a00vboxsync *
92a27575521748a392dcd1b996fce55b87411a00vboxsync * The contents of this file may alternatively be used under the terms
92a27575521748a392dcd1b996fce55b87411a00vboxsync * of the Common Development and Distribution License Version 1.0
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync * VirtualBox OSE distribution, in which case the provisions of the
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync * CDDL are applicable instead of those of the GPL.
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync *
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync * You may elect to license modified versions of this file under the
10cdf5733351fdcd857d439ca32189e812f18682vboxsync * terms and conditions of either the GPL or the CDDL or both.
10cdf5733351fdcd857d439ca32189e812f18682vboxsync *
10cdf5733351fdcd857d439ca32189e812f18682vboxsync * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
10cdf5733351fdcd857d439ca32189e812f18682vboxsync * Clara, CA 95054 USA or visit http://www.sun.com if you need
10cdf5733351fdcd857d439ca32189e812f18682vboxsync * additional information or have any questions.
10cdf5733351fdcd857d439ca32189e812f18682vboxsync */
10cdf5733351fdcd857d439ca32189e812f18682vboxsync
10cdf5733351fdcd857d439ca32189e812f18682vboxsync/*******************************************************************************
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync*   Header Files                                                               *
10cdf5733351fdcd857d439ca32189e812f18682vboxsync*******************************************************************************/
10cdf5733351fdcd857d439ca32189e812f18682vboxsync#include <iprt/handletable.h>
10cdf5733351fdcd857d439ca32189e812f18682vboxsync#include <iprt/mem.h>
10cdf5733351fdcd857d439ca32189e812f18682vboxsync#include <iprt/spinlock.h>
10cdf5733351fdcd857d439ca32189e812f18682vboxsync#include <iprt/err.h>
10cdf5733351fdcd857d439ca32189e812f18682vboxsync#include <iprt/assert.h>
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync#include <iprt/param.h>
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync#include <iprt/string.h>
cd9e4940318086a06a68bf301960563dcb72b939vboxsync#include <iprt/asm.h>
cd9e4940318086a06a68bf301960563dcb72b939vboxsync#include "internal/magics.h"
cd9e4940318086a06a68bf301960563dcb72b939vboxsync#include "handletable.h"
10cdf5733351fdcd857d439ca32189e812f18682vboxsync
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync
10cdf5733351fdcd857d439ca32189e812f18682vboxsync
10cdf5733351fdcd857d439ca32189e812f18682vboxsyncRTDECL(int) RTHandleTableCreateEx(PRTHANDLETABLE phHandleTable, uint32_t fFlags, uint32_t uBase, uint32_t cMax,
10cdf5733351fdcd857d439ca32189e812f18682vboxsync                                  PFNRTHANDLETABLERETAIN pfnRetain, void *pvUser)
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync{
10cdf5733351fdcd857d439ca32189e812f18682vboxsync    PRTHANDLETABLEINT   pThis;
10cdf5733351fdcd857d439ca32189e812f18682vboxsync    uint32_t            cLevel1;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    size_t              cb;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync
10cdf5733351fdcd857d439ca32189e812f18682vboxsync    /*
10cdf5733351fdcd857d439ca32189e812f18682vboxsync     * Validate input.
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync     */
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    AssertPtrReturn(phHandleTable, VERR_INVALID_POINTER);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    *phHandleTable = NIL_RTHANDLETABLE;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    AssertPtrNullReturn(pfnRetain, VERR_INVALID_POINTER);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    AssertReturn(!(fFlags & ~RTHANDLETABLE_FLAGS_MASK), VERR_INVALID_PARAMETER);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    AssertReturn(cMax > 0, VERR_INVALID_PARAMETER);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    AssertReturn(UINT32_MAX - cMax >= uBase, VERR_INVALID_PARAMETER);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    /*
cd9e4940318086a06a68bf301960563dcb72b939vboxsync     * Adjust the cMax value so it is a multiple of the 2nd level tables.
10cdf5733351fdcd857d439ca32189e812f18682vboxsync     */
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    if (cMax >= UINT32_MAX - RTHT_LEVEL2_ENTRIES)
10cdf5733351fdcd857d439ca32189e812f18682vboxsync        cMax = UINT32_MAX - RTHT_LEVEL2_ENTRIES + 1;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    cMax = ((cMax + RTHT_LEVEL2_ENTRIES - 1) / RTHT_LEVEL2_ENTRIES) * RTHT_LEVEL2_ENTRIES;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    cLevel1 = cMax / RTHT_LEVEL2_ENTRIES;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    Assert(cLevel1 * RTHT_LEVEL2_ENTRIES == cMax);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    /*
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync     * Allocate the structure, include the 1st level lookup table
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync     * if it's below the threshold size.
86abc60770f825f8c2ed4257675b50a08743b687vboxsync     */
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    cb = sizeof(RTHANDLETABLEINT);
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    if (cLevel1 < RTHT_LEVEL1_DYN_ALLOC_THRESHOLD)
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync        cb = RT_ALIGN(cb, sizeof(void *)) + cLevel1 * sizeof(void *);
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    pThis = (PRTHANDLETABLEINT)RTMemAllocZ(cb);
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    if (!pThis)
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync        return VERR_NO_MEMORY;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync
4a429a59b1a82ce092626ea5f7512466c18f2015vboxsync    /*
4a429a59b1a82ce092626ea5f7512466c18f2015vboxsync     * Initialize it.
4a429a59b1a82ce092626ea5f7512466c18f2015vboxsync     */
4a429a59b1a82ce092626ea5f7512466c18f2015vboxsync    pThis->u32Magic = RTHANDLETABLE_MAGIC;
4a429a59b1a82ce092626ea5f7512466c18f2015vboxsync    pThis->fFlags = fFlags;
4a429a59b1a82ce092626ea5f7512466c18f2015vboxsync    pThis->uBase = uBase;
4a429a59b1a82ce092626ea5f7512466c18f2015vboxsync    pThis->cCur = 0;
4a429a59b1a82ce092626ea5f7512466c18f2015vboxsync    pThis->hSpinlock = NIL_RTSPINLOCK;
4a429a59b1a82ce092626ea5f7512466c18f2015vboxsync    if (cLevel1 < RTHT_LEVEL1_DYN_ALLOC_THRESHOLD)
4a429a59b1a82ce092626ea5f7512466c18f2015vboxsync        pThis->papvLevel1 = (void **)((uint8_t *)pThis + RT_ALIGN(sizeof(*pThis), sizeof(void *)));
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    else
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        pThis->papvLevel1 = NULL;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    pThis->pfnRetain = pfnRetain;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    pThis->pvRetainUser = pvUser;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    pThis->cMax = cMax;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    pThis->cCurAllocated = 0;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    pThis->cLevel1 = cLevel1 < RTHT_LEVEL1_DYN_ALLOC_THRESHOLD ? cLevel1 : 0;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    pThis->iFreeHead = NIL_RTHT_INDEX;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    pThis->iFreeTail = NIL_RTHT_INDEX;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    if (fFlags & RTHANDLETABLE_FLAGS_LOCKED)
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    {
86abc60770f825f8c2ed4257675b50a08743b687vboxsync        int rc = RTSpinlockCreate(&pThis->hSpinlock);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        if (RT_FAILURE(rc))
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        {
86abc60770f825f8c2ed4257675b50a08743b687vboxsync            RTMemFree(pThis);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync            return rc;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync        }
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    }
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    *phHandleTable = pThis;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    return VINF_SUCCESS;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync}
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync
23ee8310386e73ba6760fa30831a7964713d34b6vboxsyncRTDECL(int) RTHandleTableCreate(PRTHANDLETABLE phHandleTable)
360c39d88dfa26b17181b57ebafdb24c2a113c63vboxsync{
360c39d88dfa26b17181b57ebafdb24c2a113c63vboxsync    return RTHandleTableCreateEx(phHandleTable, RTHANDLETABLE_FLAGS_LOCKED, 1, 65534, NULL, NULL);
360c39d88dfa26b17181b57ebafdb24c2a113c63vboxsync}
360c39d88dfa26b17181b57ebafdb24c2a113c63vboxsync
360c39d88dfa26b17181b57ebafdb24c2a113c63vboxsync
360c39d88dfa26b17181b57ebafdb24c2a113c63vboxsyncRTDECL(int) RTHandleTableDestroy(RTHANDLETABLE hHandleTable, PFNRTHANDLETABLEDELETE pfnDelete, void *pvUser)
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync{
02fb80eb0db13569db21d1ce5e0f3e0d5a6122aavboxsync    PRTHANDLETABLEINT   pThis;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    RTSPINLOCKTMP       Tmp;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    uint32_t            i1;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    uint32_t            i;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    /*
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync     * Validate input, quitely ignore the NIL handle.
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync     */
6967517de4be849f55b0141d6089add0eff2aa7bvboxsync    if (hHandleTable == NIL_RTHANDLETABLE)
6967517de4be849f55b0141d6089add0eff2aa7bvboxsync        return VINF_SUCCESS;
23ee8310386e73ba6760fa30831a7964713d34b6vboxsync    pThis = (PRTHANDLETABLEINT)hHandleTable;
86abc60770f825f8c2ed4257675b50a08743b687vboxsync    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
7b213bb002950f9fcf809f605cc584fa543481advboxsync    AssertReturn(pThis->u32Magic == RTHANDLETABLE_MAGIC, VERR_INVALID_HANDLE);
7b213bb002950f9fcf809f605cc584fa543481advboxsync    AssertPtrNullReturn(pfnDelete, VERR_INVALID_POINTER);
7b213bb002950f9fcf809f605cc584fa543481advboxsync
7b213bb002950f9fcf809f605cc584fa543481advboxsync    /*
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync     * Mark the thing as invalid / deleted.
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync     * Then kill the lock.
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync     */
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    rtHandleTableLock(pThis, &Tmp);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    ASMAtomicWriteU32(&pThis->u32Magic, ~RTHANDLETABLE_MAGIC);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    rtHandleTableUnlock(pThis, &Tmp);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    if (pThis->hSpinlock != NIL_RTSPINLOCK)
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    {
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        rtHandleTableLock(pThis, &Tmp);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        rtHandleTableUnlock(pThis, &Tmp);
9019681d4e9b8399b951793a9dd92b63c195e0eevboxsync
9019681d4e9b8399b951793a9dd92b63c195e0eevboxsync        RTSpinlockDestroy(pThis->hSpinlock);
9019681d4e9b8399b951793a9dd92b63c195e0eevboxsync        pThis->hSpinlock = NIL_RTSPINLOCK;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    }
cd9e4940318086a06a68bf301960563dcb72b939vboxsync
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    if (pfnDelete)
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    {
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        /*
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync         * Walk all the tables looking for used handles.
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync         */
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        uint32_t cLeft = pThis->cCurAllocated;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        if (pThis->fFlags & RTHANDLETABLE_FLAGS_CONTEXT)
1cc3bd5463294790ba54c78fde5313264185e50cvboxsync        {
1cc3bd5463294790ba54c78fde5313264185e50cvboxsync            for (i1 = 0; cLeft > 0 && i1 < pThis->cLevel1; i1++)
b49952fd6cae765238f4760c700c5ef797a56092vboxsync            {
b49952fd6cae765238f4760c700c5ef797a56092vboxsync                PRTHTENTRYCTX paTable = (PRTHTENTRYCTX)pThis->papvLevel1[i1];
b49952fd6cae765238f4760c700c5ef797a56092vboxsync                if (paTable)
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                    for (i = 0; i < RTHT_LEVEL2_ENTRIES; i++)
cd9e4940318086a06a68bf301960563dcb72b939vboxsync                        if (!RTHT_IS_FREE(paTable[i].pvObj))
f9e9ec581188b7f7645e3dea5bafa77cfcec31efvboxsync                        {
f9e9ec581188b7f7645e3dea5bafa77cfcec31efvboxsync                            pfnDelete(hHandleTable, pThis->uBase + i + i1 * RTHT_LEVEL2_ENTRIES,
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                                      paTable[i].pvObj, paTable[i].pvCtx, pvUser);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                            Assert(cLeft > 0);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                            cLeft--;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                        }
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync            }
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        }
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        else
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        {
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync            for (i1 = 0; cLeft > 0 && i1 < pThis->cLevel1; i1++)
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync            {
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                PRTHTENTRY paTable = (PRTHTENTRY)pThis->papvLevel1[i1];
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                if (paTable)
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                    for (i = 0; i < RTHT_LEVEL2_ENTRIES; i++)
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                        if (!RTHT_IS_FREE(paTable[i].pvObj))
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                        {
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                            pfnDelete(hHandleTable, pThis->uBase + i + i1 * RTHT_LEVEL2_ENTRIES,
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                                      paTable[i].pvObj, NULL, pvUser);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                            Assert(cLeft > 0);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                            cLeft--;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync                        }
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync            }
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        }
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        Assert(!cLeft);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    }
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    /*
c7a92d481aced08517570d43bf75e2a9f3a8aaeavboxsync     * Free the memory.
c7a92d481aced08517570d43bf75e2a9f3a8aaeavboxsync     */
c7a92d481aced08517570d43bf75e2a9f3a8aaeavboxsync    for (i1 = 0; i1 < pThis->cLevel1; i1++)
c7a92d481aced08517570d43bf75e2a9f3a8aaeavboxsync        if (pThis->papvLevel1[i1])
c7a92d481aced08517570d43bf75e2a9f3a8aaeavboxsync        {
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync            RTMemFree(pThis->papvLevel1[i1]);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync            pThis->papvLevel1[i1] = NULL;
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        }
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync    if (pThis->cMax / RTHT_LEVEL2_ENTRIES >= RTHT_LEVEL1_DYN_ALLOC_THRESHOLD)
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync        RTMemFree(pThis->papvLevel1);
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync
c7a92d481aced08517570d43bf75e2a9f3a8aaeavboxsync    RTMemFree(pThis);
541ba632c438350cc8044d7ce2c8623dca446546vboxsync
08a80484275b5172ce23729ecccc934c6a92d201vboxsync    return VINF_SUCCESS;
08a80484275b5172ce23729ecccc934c6a92d201vboxsync}
08a80484275b5172ce23729ecccc934c6a92d201vboxsync
db3dbd0ed7eb69f804a8921fa23a1267ea01f46evboxsync