C++ RTMemAlloc函数代码示例

//.........这里部分代码省略.........
            {
                return false;
            }
        }

        if (!(cbRecordCurrent & VBVA_F_RECORD_PARTIAL))
        {
            /* The record is completed by guest. Return it to the caller. */
            *ppHdr = (VBVACMDHDR *)pVideoAccel->pu8VbvaPartial;
            *pcbCmd = pVideoAccel->cbVbvaPartial;

            pVideoAccel->pu8VbvaPartial = NULL;
            pVideoAccel->cbVbvaPartial = 0;

            /* Advance the record index. */
            pVbvaMemory->indexRecordFirst = (indexRecordFirst + 1) % VBVA_MAX_RECORDS;

#ifdef DEBUG_sunlover
            LogFlowFunc(("partial done ok, data = %d, free = %d\n",
                         pVbvaMemory->off32Data, pVbvaMemory->off32Free));
#endif /* DEBUG_sunlover */
        }

        return true;
    }

    /* A new record need to be processed. */
    if (cbRecordCurrent & VBVA_F_RECORD_PARTIAL)
    {
        /* Current record is being written by guest. '=' is important here. */
        if (cbRecord >= VBVA_RING_BUFFER_SIZE - VBVA_RING_BUFFER_THRESHOLD)
        {
            /* Partial read must be started. */
            if (!i_vbvaPartialRead(&pVideoAccel->pu8VbvaPartial, &pVideoAccel->cbVbvaPartial, cbRecord, pVbvaMemory))
            {
                return false;
            }

            LogFlowFunc(("started partial record cbVbvaPartial = 0x%08X cbRecord 0x%08X, first = %d, free = %d\n",
                          pVideoAccel->cbVbvaPartial, cbRecordCurrent, indexRecordFirst, indexRecordFree));
        }

        return true;
    }

    /* Current record is complete. If it is not empty, process it. */
    if (cbRecord)
    {
        /* The size of largest contiguous chunk in the ring biffer. */
        uint32_t u32BytesTillBoundary = VBVA_RING_BUFFER_SIZE - pVbvaMemory->off32Data;

        /* The ring buffer pointer. */
        uint8_t *au8RingBuffer = &pVbvaMemory->au8RingBuffer[0];

        /* The pointer to data in the ring buffer. */
        uint8_t *src = &au8RingBuffer[pVbvaMemory->off32Data];

        /* Fetch or point the data. */
        if (u32BytesTillBoundary >= cbRecord)
        {
            /* The command does not cross buffer boundary. Return address in the buffer. */
            *ppHdr = (VBVACMDHDR *)src;

            /* Advance data offset. */
            pVbvaMemory->off32Data = (pVbvaMemory->off32Data + cbRecord) % VBVA_RING_BUFFER_SIZE;
        }
        else
        {
            /* The command crosses buffer boundary. Rare case, so not optimized. */
            uint8_t *dst = (uint8_t *)RTMemAlloc(cbRecord);

            if (!dst)
            {
                LogRelFlowFunc(("could not allocate %d bytes from heap!!!\n", cbRecord));
                pVbvaMemory->off32Data = (pVbvaMemory->off32Data + cbRecord) % VBVA_RING_BUFFER_SIZE;
                return false;
            }

            i_vbvaFetchBytes(pVbvaMemory, dst, cbRecord);

            *ppHdr = (VBVACMDHDR *)dst;

#ifdef DEBUG_sunlover
            LogFlowFunc(("Allocated from heap %p\n", dst));
#endif /* DEBUG_sunlover */
        }
    }

    *pcbCmd = cbRecord;

    /* Advance the record index. */
    pVbvaMemory->indexRecordFirst = (indexRecordFirst + 1) % VBVA_MAX_RECORDS;

#ifdef DEBUG_sunlover
    LogFlowFunc(("done ok, data = %d, free = %d\n",
                 pVbvaMemory->off32Data, pVbvaMemory->off32Free));
#endif /* DEBUG_sunlover */

    return true;
}

/**
 * Reads a guest property.
 *
 * @returns VBox status code, fully bitched.
 *
 * @param   u32ClientId         The HGCM client ID for the guest property session.
 * @param   pszPropName         The property name.
 * @param   ppszValue           Where to return the value.  This is always set
 *                              to NULL.  Free it using RTStrFree().
 * @param   ppszFlags           Where to return the value flags. Free it
 *                              using RTStrFree().  Optional.
 * @param   puTimestamp         Where to return the timestamp.  This is only set
 *                              on success.  Optional.
 */
int VBoxServiceReadProp(uint32_t u32ClientId, const char *pszPropName,
                        char **ppszValue, char **ppszFlags, uint64_t *puTimestamp)
{
    AssertPtrReturn(pszPropName, VERR_INVALID_POINTER);
    AssertPtrReturn(ppszValue, VERR_INVALID_POINTER);

    uint32_t    cbBuf = _1K;
    void       *pvBuf = NULL;
    int         rc;

    *ppszValue = NULL;

    for (unsigned cTries = 0; cTries < 10; cTries++)
    {
        /*
         * (Re-)Allocate the buffer and try read the property.
         */
        RTMemFree(pvBuf);
        pvBuf = RTMemAlloc(cbBuf);
        if (!pvBuf)
        {
            VBoxServiceError("Guest Property: Failed to allocate %zu bytes\n", cbBuf);
            rc = VERR_NO_MEMORY;
            break;
        }
        char    *pszValue;
        char    *pszFlags;
        uint64_t uTimestamp;
        rc = VbglR3GuestPropRead(u32ClientId, pszPropName,
                                 pvBuf, cbBuf,
                                 &pszValue, &uTimestamp, &pszFlags, NULL);
        if (RT_FAILURE(rc))
        {
            if (rc == VERR_BUFFER_OVERFLOW)
            {
                /* try again with a bigger buffer. */
                cbBuf *= 2;
                continue;
            }
            if (rc == VERR_NOT_FOUND)
                VBoxServiceVerbose(2, "Guest Property: %s not found\n", pszPropName);
            else
                VBoxServiceError("Guest Property: Failed to query \"%s\": %Rrc\n", pszPropName, rc);
            break;
        }

        VBoxServiceVerbose(2, "Guest Property: Read \"%s\" = \"%s\", timestamp %RU64n\n",
                           pszPropName, pszValue, uTimestamp);
        *ppszValue = RTStrDup(pszValue);
        if (!*ppszValue)
        {
            VBoxServiceError("Guest Property: RTStrDup failed for \"%s\"\n", pszValue);
            rc = VERR_NO_MEMORY;
            break;
        }

        if (puTimestamp)
            *puTimestamp = uTimestamp;
        if (ppszFlags)
            *ppszFlags = RTStrDup(pszFlags);
        break; /* done */
    }

    if (pvBuf)
        RTMemFree(pvBuf);
    return rc;
}

static int vbglR3DnDHGProcessURIMessages(uint32_t   uClientId,
                                         uint32_t  *puScreenId,
                                         char      *pszFormat,
                                         uint32_t   cbFormat,
                                         uint32_t  *pcbFormatRecv,
                                         void     **ppvData,
                                         uint32_t   cbData,
                                         size_t    *pcbDataRecv)
{
    /* Make a string list out of the uri data. */
    RTCList<RTCString> uriList = RTCString(static_cast<char*>(*ppvData), *pcbDataRecv - 1).split("\r\n");
    if (uriList.isEmpty())
        return VINF_SUCCESS;

    uint32_t cbTmpData = _1M * 10;
    void *pvTmpData = RTMemAlloc(cbTmpData);
    if (!pvTmpData)
        return VERR_NO_MEMORY;

    /* Create and query the drop target directory. */
    char pszDropDir[RTPATH_MAX];
    int rc = vbglR3DnDCreateDropDir(pszDropDir, sizeof(pszDropDir));
    if (RT_FAILURE(rc))
    {
        RTMemFree(pvTmpData);
        return rc;
    }

    /* Patch the old drop data with the new drop directory, so the drop target
     * can find the files. */
    RTCList<RTCString> guestUriList;
    for (size_t i = 0; i < uriList.size(); ++i)
    {
        const RTCString &strUri = uriList.at(i);
        /* Query the path component of a file URI. If this hasn't a
         * file scheme, null is returned. */
        if (char *pszFilePath = RTUriFilePath(strUri.c_str(), URI_FILE_FORMAT_AUTO))
        {
            RTCString strFullPath = RTCString().printf("%s%c%s", pszDropDir, RTPATH_SLASH, pszFilePath);
            char *pszNewUri = RTUriFileCreate(strFullPath.c_str());
            if (pszNewUri)
            {
                guestUriList.append(pszNewUri);
                RTStrFree(pszNewUri);
            }
        }
        else
            guestUriList.append(strUri);
    }

    /* Cleanup the old data and write the new data back to the event. */
    RTMemFree(*ppvData);
    RTCString newData = RTCString::join(guestUriList, "\r\n") + "\r\n";
    *ppvData = RTStrDupN(newData.c_str(), newData.length());
    *pcbDataRecv = newData.length() + 1;

    /* Lists for holding created files & directories in the case of a
     * rollback. */
    RTCList<RTCString> guestDirList;
    RTCList<RTCString> guestFileList;
    char pszPathname[RTPATH_MAX];
    uint32_t cbPathname = 0;
    bool fLoop = true;
    do
    {
        uint32_t uNextMsg;
        uint32_t cNextParms;
        rc = vbglR3DnDQueryNextHostMessageType(uClientId, &uNextMsg, &cNextParms, false);
        DO(("%Rrc - %d\n", rc , uNextMsg));
        if (RT_SUCCESS(rc))
        {
            switch(uNextMsg)
            {
                case DragAndDropSvc::HOST_DND_HG_SND_DIR:
                {
                    uint32_t fMode = 0;
                    rc = vbglR3DnDHGProcessSendDirMessage(uClientId,
                                                          pszPathname,
                                                          sizeof(pszPathname),
                                                          &cbPathname,
                                                          &fMode);
                    if (RT_SUCCESS(rc))
                    {
                        DO(("Got drop dir: %s - %o - %Rrc\n", pszPathname, fMode, rc));
                        char *pszNewDir = RTPathJoinA(pszDropDir, pszPathname);
                        rc = RTDirCreate(pszNewDir, (fMode & RTFS_UNIX_MASK) | RTFS_UNIX_IRWXU, 0);
                        if (!guestDirList.contains(pszNewDir))
                            guestDirList.append(pszNewDir);
                    }
                    break;
                }
                case DragAndDropSvc::HOST_DND_HG_SND_FILE:
                {
                    uint32_t cbDataRecv;
                    uint32_t fMode = 0;
                    rc = vbglR3DnDHGProcessSendFileMessage(uClientId,
                                                           pszPathname,
                                                           sizeof(pszPathname),
                                                           &cbPathname,
                                                           pvTmpData,
//.........这里部分代码省略.........

/**
 * Gathers VM statistics and reports them to the host.
 */
static void VBoxServiceVMStatsReport(void)
{
#if defined(RT_OS_WINDOWS)
    SYSTEM_INFO systemInfo;
    PSYSTEM_PROCESSOR_PERFORMANCE_INFORMATION pProcInfo;
    MEMORYSTATUSEX memStatus;
    uint32_t cbStruct;
    DWORD    cbReturned;

    Assert(gCtx.pfnGlobalMemoryStatusEx && gCtx.pfnNtQuerySystemInformation);
    if (    !gCtx.pfnGlobalMemoryStatusEx
        ||  !gCtx.pfnNtQuerySystemInformation)
        return;

    /* Clear the report so we don't report garbage should NtQuerySystemInformation
       behave in an unexpected manner. */
    VMMDevReportGuestStats req;
    RT_ZERO(req);

    /* Query and report guest statistics */
    GetSystemInfo(&systemInfo);

    memStatus.dwLength = sizeof(memStatus);
    gCtx.pfnGlobalMemoryStatusEx(&memStatus);

    req.guestStats.u32PageSize          = systemInfo.dwPageSize;
    req.guestStats.u32PhysMemTotal      = (uint32_t)(memStatus.ullTotalPhys / _4K);
    req.guestStats.u32PhysMemAvail      = (uint32_t)(memStatus.ullAvailPhys / _4K);
    /* The current size of the committed memory limit, in bytes. This is physical
       memory plus the size of the page file, minus a small overhead. */
    req.guestStats.u32PageFileSize      = (uint32_t)(memStatus.ullTotalPageFile / _4K) - req.guestStats.u32PhysMemTotal;
    req.guestStats.u32MemoryLoad        = memStatus.dwMemoryLoad;
    req.guestStats.u32StatCaps          = VBOX_GUEST_STAT_PHYS_MEM_TOTAL
                                        | VBOX_GUEST_STAT_PHYS_MEM_AVAIL
                                        | VBOX_GUEST_STAT_PAGE_FILE_SIZE
                                        | VBOX_GUEST_STAT_MEMORY_LOAD;
#ifdef VBOX_WITH_MEMBALLOON
    req.guestStats.u32PhysMemBalloon    = VBoxServiceBalloonQueryPages(_4K);
    req.guestStats.u32StatCaps         |= VBOX_GUEST_STAT_PHYS_MEM_BALLOON;
#else
    req.guestStats.u32PhysMemBalloon    = 0;
#endif

    if (gCtx.pfnGetPerformanceInfo)
    {
        PERFORMANCE_INFORMATION perfInfo;

        if (gCtx.pfnGetPerformanceInfo(&perfInfo, sizeof(perfInfo)))
        {
            req.guestStats.u32Processes         = perfInfo.ProcessCount;
            req.guestStats.u32Threads           = perfInfo.ThreadCount;
            req.guestStats.u32Handles           = perfInfo.HandleCount;
            req.guestStats.u32MemCommitTotal    = perfInfo.CommitTotal;     /* already in pages */
            req.guestStats.u32MemKernelTotal    = perfInfo.KernelTotal;     /* already in pages */
            req.guestStats.u32MemKernelPaged    = perfInfo.KernelPaged;     /* already in pages */
            req.guestStats.u32MemKernelNonPaged = perfInfo.KernelNonpaged;  /* already in pages */
            req.guestStats.u32MemSystemCache    = perfInfo.SystemCache;     /* already in pages */
            req.guestStats.u32StatCaps |= VBOX_GUEST_STAT_PROCESSES | VBOX_GUEST_STAT_THREADS | VBOX_GUEST_STAT_HANDLES
                                        | VBOX_GUEST_STAT_MEM_COMMIT_TOTAL | VBOX_GUEST_STAT_MEM_KERNEL_TOTAL
                                        | VBOX_GUEST_STAT_MEM_KERNEL_PAGED | VBOX_GUEST_STAT_MEM_KERNEL_NONPAGED
                                        | VBOX_GUEST_STAT_MEM_SYSTEM_CACHE;
        }
        else
            VBoxServiceVerbose(3, "VBoxServiceVMStatsReport: GetPerformanceInfo failed with %d\n", GetLastError());
    }

    /* Query CPU load information */
    cbStruct = systemInfo.dwNumberOfProcessors * sizeof(SYSTEM_PROCESSOR_PERFORMANCE_INFORMATION);
    pProcInfo = (PSYSTEM_PROCESSOR_PERFORMANCE_INFORMATION)RTMemAlloc(cbStruct);
    if (!pProcInfo)
        return;

    /* Unfortunately GetSystemTimes is XP SP1 and up only, so we need to use the semi-undocumented NtQuerySystemInformation */
    NTSTATUS rc = gCtx.pfnNtQuerySystemInformation(SystemProcessorPerformanceInformation, pProcInfo, cbStruct, &cbReturned);
    if (    !rc
        &&  cbReturned == cbStruct)
    {
        if (gCtx.au64LastCpuLoad_Kernel == 0)
        {
            /* first time */
            gCtx.au64LastCpuLoad_Idle[0]    = pProcInfo->IdleTime.QuadPart;
            gCtx.au64LastCpuLoad_Kernel[0]  = pProcInfo->KernelTime.QuadPart;
            gCtx.au64LastCpuLoad_User[0]    = pProcInfo->UserTime.QuadPart;

            Sleep(250);

            rc = gCtx.pfnNtQuerySystemInformation(SystemProcessorPerformanceInformation, pProcInfo, cbStruct, &cbReturned);
            Assert(!rc);
        }

        uint64_t deltaIdle    = (pProcInfo->IdleTime.QuadPart   - gCtx.au64LastCpuLoad_Idle[0]);
        uint64_t deltaKernel  = (pProcInfo->KernelTime.QuadPart - gCtx.au64LastCpuLoad_Kernel[0]);
        uint64_t deltaUser    = (pProcInfo->UserTime.QuadPart   - gCtx.au64LastCpuLoad_User[0]);
        deltaKernel          -= deltaIdle;  /* idle time is added to kernel time */
        uint64_t ullTotalTime = deltaIdle + deltaKernel + deltaUser;
        if (ullTotalTime == 0) /* Prevent division through zero. */
            ullTotalTime = 1;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
                        DROPFILES *pDropFiles = (DROPFILES *)pvData;
                        AssertPtr(pDropFiles);
                        bool fUnicode = RT_BOOL(pDropFiles->fWide);

                        /* Get the offset of the file list. */
                        Assert(pDropFiles->pFiles >= sizeof(DROPFILES));
                        /* Note: This is *not* pDropFiles->pFiles! DragQueryFile only
                         *       will work with the plain storage medium pointer! */
                        HDROP hDrop = (HDROP)(pvData);

                        /* First, get the file count. */
                        /** @todo Does this work on Windows 2000 / NT4? */
                        char *pszFiles = NULL;
                        uint32_t cchFiles = 0;
                        UINT cFiles = DragQueryFile(hDrop, UINT32_MAX /* iFile */,
                                                    NULL /* lpszFile */, 0 /* cchFile */);
                        LogFlowFunc(("CF_HDROP got %RU16 file(s)\n", cFiles));

                        for (UINT i = 0; i < cFiles; i++)
                        {
                            UINT cch = DragQueryFile(hDrop, i /* File index */,
                                                     NULL /* Query size first */,
                                                     0 /* cchFile */);
                            Assert(cch);

                            if (RT_FAILURE(rc))
                                break;

                            char *pszFile = NULL; /* UTF-8 version. */
                            UINT cchFile = 0;
                            if (fUnicode)
                            {
                                /* Allocate enough space (including terminator). */
                                WCHAR *pwszFile = (WCHAR *)RTMemAlloc((cch + 1) * sizeof(WCHAR));
                                if (pwszFile)
                                {
                                    cchFile = DragQueryFileW(hDrop, i /* File index */,
                                                             pwszFile, cch + 1 /* Include terminator */);
                                    AssertMsg(cchFile == cch, ("cchCopied (%RU16) does not match cchFile (%RU16)\n",
                                                               cchFile, cch));
                                    rc = RTUtf16ToUtf8(pwszFile, &pszFile);
                                    AssertRC(rc);

                                    RTMemFree(pwszFile);
                                }
                                else
                                    rc = VERR_NO_MEMORY;
                            }
                            else /* ANSI */
                            {
                                /* Allocate enough space (including terminator). */
                                pszFile = (char *)RTMemAlloc((cch + 1) * sizeof(char));
                                if (pszFile)
                                {
                                    cchFile = DragQueryFileA(hDrop, i /* File index */,
                                                             pszFile, cchFile + 1 /* Include terminator */);
                                    AssertMsg(cchFile == cch, ("cchCopied (%RU16) does not match cchFile (%RU16)\n",
                                                               cchFile, cch));
                                }
                                else
                                    rc = VERR_NO_MEMORY;
                            }

                            if (RT_SUCCESS(rc))
                            {
                                LogFlowFunc(("\tFile: %s (cchFile=%RU32)\n", pszFile, cchFile));

HRESULT VBoxD3DIfCreateForRc(struct VBOXWDDMDISP_RESOURCE *pRc)
{
    PVBOXWDDMDISP_DEVICE pDevice = pRc->pDevice;
    HRESULT hr = E_FAIL;
    IDirect3DDevice9 * pDevice9If = VBOXDISP_D3DEV(pDevice);

    if (VBOXWDDMDISP_IS_TEXTURE(pRc->RcDesc.fFlags))
    {
        PVBOXWDDMDISP_ALLOCATION pAllocation = &pRc->aAllocations[0];
        IDirect3DBaseTexture9 *pD3DIfTex;
        HANDLE hSharedHandle = pAllocation->hSharedHandle;
        void **pavClientMem = NULL;
        VBOXDISP_D3DIFTYPE enmD3DIfType = VBOXDISP_D3DIFTYPE_UNDEFINED;
        hr = S_OK;
        if (pRc->RcDesc.enmPool == D3DDDIPOOL_SYSTEMMEM)
        {
            pavClientMem = (void**)RTMemAlloc(sizeof (pavClientMem[0]) * pRc->cAllocations);
            Assert(pavClientMem);
            if (pavClientMem)
            {
                for (UINT i = 0; i < pRc->cAllocations; ++i)
                {
                    Assert(pRc->aAllocations[i].pvMem);
                    pavClientMem[i] = pRc->aAllocations[i].pvMem;
                }
            }
            else
                hr = E_FAIL;
        }

#ifdef DEBUG
        if (!pRc->RcDesc.fFlags.CubeMap)
        {
            PVBOXWDDMDISP_ALLOCATION pAlloc = &pRc->aAllocations[0];
            uint32_t tstW = pAlloc->SurfDesc.width;
            uint32_t tstH = pAlloc->SurfDesc.height;
            for (UINT i = 1; i < pRc->cAllocations; ++i)
            {
                tstW /= 2;
                tstH /= 2;
                pAlloc = &pRc->aAllocations[i];
                Assert((pAlloc->SurfDesc.width == tstW) || (!tstW && (pAlloc->SurfDesc.width==1)));
                Assert((pAlloc->SurfDesc.height == tstH) || (!tstH && (pAlloc->SurfDesc.height==1)));
            }
        }
#endif

        if (SUCCEEDED(hr))
        {
            if (pRc->RcDesc.fFlags.CubeMap)
            {
                if ( (pAllocation->SurfDesc.width!=pAllocation->SurfDesc.height)
                     || (pRc->cAllocations%6!=0))
                {
                    WARN(("unexpected cubemap texture config: (%d ; %d), allocs: %d",
                            pAllocation->SurfDesc.width, pAllocation->SurfDesc.height, pRc->cAllocations));
                    hr = E_INVALIDARG;
                }
                else
                {
                    hr = pDevice->pAdapter->D3D.D3D.pfnVBoxWineExD3DDev9CreateCubeTexture((IDirect3DDevice9Ex *)pDevice9If,
                                                pAllocation->SurfDesc.d3dWidth,
                                                VBOXDISP_CUBEMAP_LEVELS_COUNT(pRc),
                                                vboxDDI2D3DUsage(pRc->RcDesc.fFlags),
                                                vboxDDI2D3DFormat(pRc->RcDesc.enmFormat),
                                                vboxDDI2D3DPool(pRc->RcDesc.enmPool),
                                                (IDirect3DCubeTexture9**)&pD3DIfTex,
#ifdef VBOXWDDMDISP_DEBUG_NOSHARED
                                                NULL,
#else
                                                pRc->RcDesc.fFlags.SharedResource ? &hSharedHandle : NULL,
#endif
                                                pavClientMem);
                        Assert(hr == S_OK);
                        Assert(pD3DIfTex);
                        enmD3DIfType = VBOXDISP_D3DIFTYPE_CUBE_TEXTURE;
                }
            }
            else if (pRc->RcDesc.fFlags.Volume)
            {
                hr = pDevice->pAdapter->D3D.D3D.pfnVBoxWineExD3DDev9CreateVolumeTexture((IDirect3DDevice9Ex *)pDevice9If,
                                            pAllocation->SurfDesc.d3dWidth,
                                            pAllocation->SurfDesc.height,
                                            pAllocation->SurfDesc.depth,
                                            pRc->cAllocations,
                                            vboxDDI2D3DUsage(pRc->RcDesc.fFlags),
                                            vboxDDI2D3DFormat(pRc->RcDesc.enmFormat),
                                            vboxDDI2D3DPool(pRc->RcDesc.enmPool),
                                            (IDirect3DVolumeTexture9**)&pD3DIfTex,
#ifdef VBOXWDDMDISP_DEBUG_NOSHARED
                                            NULL,
#else
                                            pRc->RcDesc.fFlags.SharedResource ? &hSharedHandle : NULL,
#endif
                                            pavClientMem);
                Assert(hr == S_OK);
                Assert(pD3DIfTex);
                enmD3DIfType = VBOXDISP_D3DIFTYPE_VOLUME_TEXTURE;
            }
            else
//.........这里部分代码省略.........

RTDECL(int) RTLocalIpcSessionConnect(PRTLOCALIPCSESSION phSession, const char *pszName, uint32_t fFlags)
{
    AssertPtrReturn(phSession, VERR_INVALID_POINTER);
    AssertPtrReturn(pszName, VERR_INVALID_POINTER);
    AssertReturn(*pszName, VERR_INVALID_PARAMETER);
    AssertReturn(!fFlags, VERR_INVALID_PARAMETER); /* Flags currently unused, must be 0. */

    PRTLOCALIPCSESSIONINT pThis = (PRTLOCALIPCSESSIONINT)RTMemAlloc(sizeof(*pThis));
    if (!pThis)
        return VERR_NO_MEMORY;

    pThis->u32Magic = RTLOCALIPCSESSION_MAGIC;
    pThis->cRefs = 1; /* The one we return. */
    pThis->fIOPending = false;
    pThis->fZeroByteRead = false;
    pThis->fCancelled = false;
    pThis->pbBounceBuf = NULL;
    pThis->cbBounceBufAlloc = 0;
    pThis->cbBounceBufUsed = 0;

    int rc = RTCritSectInit(&pThis->CritSect);
    if (RT_SUCCESS(rc))
    {
        pThis->hEvent = CreateEvent(NULL /*lpEventAttributes*/, TRUE /*bManualReset*/,
                                    FALSE /*bInitialState*/, NULL /*lpName*/);
        if (pThis->hEvent != NULL)
        {
            RT_ZERO(pThis->OverlappedIO);
            pThis->OverlappedIO.Internal = STATUS_PENDING;
            pThis->OverlappedIO.hEvent = pThis->hEvent;

            PSECURITY_DESCRIPTOR pSecDesc;
            rc = rtLocalIpcServerWinAllocSecurityDescriptior(&pSecDesc, false /* Client */);
            if (RT_SUCCESS(rc))
            {
                char *pszPipe;
                if (RTStrAPrintf(&pszPipe, "%s%s", RTLOCALIPC_WIN_PREFIX, pszName))
                {
                    SECURITY_ATTRIBUTES SecAttrs;
                    SecAttrs.nLength = sizeof(SECURITY_ATTRIBUTES);
                    SecAttrs.lpSecurityDescriptor = pSecDesc;
                    SecAttrs.bInheritHandle = FALSE;

                    HANDLE hPipe = CreateFile(pszPipe,                  /* pipe name */
                                                GENERIC_READ            /* read and write access */
                                              | GENERIC_WRITE,
                                              0,                        /* no sharing */
                                              &SecAttrs,                /* lpSecurityAttributes */
                                              OPEN_EXISTING,            /* opens existing pipe */
                                              FILE_FLAG_OVERLAPPED,     /* default attributes */
                                              NULL);                    /* no template file */
                    RTStrFree(pszPipe);

                    if (hPipe != INVALID_HANDLE_VALUE)
                    {
                        LocalFree(pSecDesc);

                        pThis->hNmPipe = hPipe;
                        *phSession = pThis;
                        return VINF_SUCCESS;
                    }
                    else
                        rc = RTErrConvertFromWin32(GetLastError());
                }
                else
                    rc = VERR_NO_MEMORY;

                LocalFree(pSecDesc);
            }

            BOOL fRc = CloseHandle(pThis->hEvent);
            AssertMsg(fRc, ("%d\n", GetLastError())); NOREF(fRc);
        }
        else
            rc = RTErrConvertFromWin32(GetLastError());

        int rc2 = RTCritSectDelete(&pThis->CritSect);
        AssertRC(rc2);
    }

    RTMemFree(pThis);
    return rc;
}

RTDECL(int) RTGetOptArgvFromString(char ***ppapszArgv, int *pcArgs, const char *pszCmdLine, const char *pszSeparators)
{
    /*
     * Some input validation.
     */
    AssertPtr(pszCmdLine);
    AssertPtr(pcArgs);
    AssertPtr(ppapszArgv);
    if (!pszSeparators)
        pszSeparators = " \t\n\r";
    else
        AssertPtr(pszSeparators);
    size_t const cchSeparators = strlen(pszSeparators);
    AssertReturn(cchSeparators > 0, VERR_INVALID_PARAMETER);

    /*
     * Parse the command line and chop off it into argv individual argv strings.
     */
    int         rc        = VINF_SUCCESS;
    const char *pszSrc    = pszCmdLine;
    char       *pszDup    = (char *)RTMemAlloc(strlen(pszSrc) + 1);
    char       *pszDst    = pszDup;
    if (!pszDup)
        return VERR_NO_STR_MEMORY;
    char      **papszArgs = NULL;
    unsigned    iArg      = 0;
    while (*pszSrc)
    {
        /* Skip stuff */
        rc = rtGetOptSkipDelimiters(&pszSrc, pszSeparators, cchSeparators);
        if (RT_FAILURE(rc))
            break;
        if (!*pszSrc)
            break;

        /* Start a new entry. */
        if ((iArg % 32) == 0)
        {
            void *pvNew = RTMemRealloc(papszArgs, (iArg + 33) * sizeof(char *));
            if (!pvNew)
            {
                rc = VERR_NO_MEMORY;
                break;
            }
            papszArgs = (char **)pvNew;
        }
        papszArgs[iArg++] = pszDst;

        /* Parse and copy the string over. */
        RTUNICP CpQuote = 0;
        RTUNICP Cp;
        for (;;)
        {
            rc = RTStrGetCpEx(&pszSrc, &Cp);
            if (RT_FAILURE(rc) || !Cp)
                break;
            if (!CpQuote)
            {
                if (Cp == '"' || Cp == '\'')
                    CpQuote = Cp;
                else if (rtGetOptIsCpInSet(Cp, pszSeparators, cchSeparators))
                    break;
                else
                    pszDst = RTStrPutCp(pszDst, Cp);
            }
            else if (CpQuote != Cp)
                pszDst = RTStrPutCp(pszDst, Cp);
            else
                CpQuote = 0;
        }
        *pszDst++ = '\0';
        if (RT_FAILURE(rc) || !Cp)
            break;
    }

    if (RT_FAILURE(rc))
    {
        RTMemFree(pszDup);
        RTMemFree(papszArgs);
        return rc;
    }

    /*
     * Terminate the array.
     * Check for empty string to make sure we've got an array.
     */
    if (iArg == 0)
    {
        RTMemFree(pszDup);
        papszArgs = (char **)RTMemAlloc(1 * sizeof(char *));
        if (!papszArgs)
            return VERR_NO_MEMORY;
    }
    papszArgs[iArg] = NULL;

    *pcArgs     = iArg;
    *ppapszArgv = papszArgs;
    return VINF_SUCCESS;
}

RTDECL(int)     RTHandleTableAlloc(RTHANDLETABLE hHandleTable, void *pvObj, uint32_t *ph)
{
    /* validate the input */
    PRTHANDLETABLEINT pThis = (PRTHANDLETABLEINT)hHandleTable;
    AssertPtrReturn(pThis, VERR_INVALID_HANDLE);
    AssertReturn(pThis->u32Magic == RTHANDLETABLE_MAGIC, VERR_INVALID_HANDLE);
    AssertReturn(!(pThis->fFlags & RTHANDLETABLE_FLAGS_CONTEXT), VERR_INVALID_FUNCTION);
    AssertReturn(!RTHT_IS_FREE(pvObj), VERR_INVALID_PARAMETER);
    AssertPtrReturn(ph, VERR_INVALID_POINTER);
    *ph = pThis->uBase - 1;

    /*
     * Allocation loop.
     */
    rtHandleTableLock(pThis);

    int rc;
    do
    {
        /*
         * Try grab a free entry from the head of the free list.
         */
        uint32_t i = pThis->iFreeHead;
        if (i != NIL_RTHT_INDEX)
        {
            PRTHTENTRYFREE pFree = (PRTHTENTRYFREE)rtHandleTableLookupSimpleIdx(pThis, i);
            Assert(pFree);
            if (i == pThis->iFreeTail)
                pThis->iFreeTail = pThis->iFreeHead = NIL_RTHT_INDEX;
            else
                pThis->iFreeHead = RTHT_GET_FREE_IDX(pFree);
            pThis->cCurAllocated++;
            Assert(pThis->cCurAllocated <= pThis->cCur);

            /*
             * Setup the entry and return.
             */
            PRTHTENTRY pEntry = (PRTHTENTRY)pFree;
            pEntry->pvObj = pvObj;
            *ph = i + pThis->uBase;
            rc = VINF_SUCCESS;
        }
        /*
         * Must expand the handle table, unless it's full.
         */
        else if (pThis->cCur >= pThis->cMax)
        {
            rc = VERR_NO_MORE_HANDLES;
            Assert(pThis->cCur == pThis->cCurAllocated);
        }
        else
        {
            /*
             * Do we have to expand the 1st level table too?
             */
            uint32_t const iLevel1 = pThis->cCur / RTHT_LEVEL2_ENTRIES;
            uint32_t cLevel1 = iLevel1 >= pThis->cLevel1
                             ? pThis->cLevel1 + PAGE_SIZE / sizeof(void *)
                             : 0;
            if (cLevel1 > pThis->cMax / RTHT_LEVEL2_ENTRIES)
                cLevel1 = pThis->cMax / RTHT_LEVEL2_ENTRIES;
            Assert(!cLevel1 || pThis->cMax / RTHT_LEVEL2_ENTRIES >= RTHT_LEVEL1_DYN_ALLOC_THRESHOLD);

            /* leave the lock (never do fancy stuff from behind a spinlock). */
            rtHandleTableUnlock(pThis);

            /*
             * Do the allocation(s).
             */
            rc = VERR_TRY_AGAIN;
            void **papvLevel1 = NULL;
            if (cLevel1)
            {
                papvLevel1 = (void **)RTMemAlloc(sizeof(void *) * cLevel1);
                if (!papvLevel1)
                    return VERR_NO_MEMORY;
            }

            PRTHTENTRY paTable = (PRTHTENTRY)RTMemAlloc(sizeof(*paTable) * RTHT_LEVEL2_ENTRIES);
            if (!paTable)
            {
                RTMemFree(papvLevel1);
                return VERR_NO_MEMORY;
            }

            /* re-enter the lock. */
            rtHandleTableLock(pThis);

            /*
             * Insert the new bits, but be a bit careful as someone might have
             * raced us expanding the table.
             */
            /* deal with the 1st level lookup expansion first */
            if (cLevel1)
            {
                Assert(papvLevel1);
                if (cLevel1 > pThis->cLevel1)
                {
                    /* Replace the 1st level table. */
                    memcpy(papvLevel1, pThis->papvLevel1, sizeof(void *) * pThis->cLevel1);
//.........这里部分代码省略.........

/**
 * Allocate memory from the heap.
 *
 * @returns Pointer to allocated memory.
 * @param   pHeap       Heap handle.
 * @param   enmTag      Statistics tag. Statistics are collected on a per tag
 *                      basis in addition to a global one. Thus we can easily
 *                      identify how memory is used by the VM. See MM_TAG_*.
 * @param   cbSize      Size of the block.
 * @param   fZero       Whether or not to zero the memory block.
 */
void *mmR3HeapAlloc(PMMHEAP pHeap, MMTAG enmTag, size_t cbSize, bool fZero)
{
#ifdef MMR3HEAP_WITH_STATISTICS
    RTCritSectEnter(&pHeap->Lock);

    /*
     * Find/alloc statistics nodes.
     */
    pHeap->Stat.cAllocations++;
    PMMHEAPSTAT pStat = (PMMHEAPSTAT)RTAvlULGet(&pHeap->pStatTree, (AVLULKEY)enmTag);
    if (pStat)
    {
        pStat->cAllocations++;

        RTCritSectLeave(&pHeap->Lock);
    }
    else
    {
        pStat = (PMMHEAPSTAT)RTMemAllocZ(sizeof(MMHEAPSTAT));
        if (!pStat)
        {
            pHeap->Stat.cFailures++;
            AssertMsgFailed(("Failed to allocate heap stat record.\n"));
            RTCritSectLeave(&pHeap->Lock);
            return NULL;
        }
        pStat->Core.Key = (AVLULKEY)enmTag;
        pStat->pHeap    = pHeap;
        RTAvlULInsert(&pHeap->pStatTree, &pStat->Core);

        pStat->cAllocations++;
        RTCritSectLeave(&pHeap->Lock);

        /* register the statistics */
        PUVM pUVM = pHeap->pUVM;
        const char *pszTag = mmGetTagName(enmTag);
        STAMR3RegisterFU(pUVM, &pStat->cbCurAllocated, STAMTYPE_U32, STAMVISIBILITY_ALWAYS,  STAMUNIT_BYTES, "Number of bytes currently allocated.",    "/MM/R3Heap/%s", pszTag);
        STAMR3RegisterFU(pUVM, &pStat->cAllocations,   STAMTYPE_U64, STAMVISIBILITY_ALWAYS,  STAMUNIT_CALLS, "Number or MMR3HeapAlloc() calls.",        "/MM/R3Heap/%s/cAllocations", pszTag);
        STAMR3RegisterFU(pUVM, &pStat->cReallocations, STAMTYPE_U64, STAMVISIBILITY_ALWAYS,  STAMUNIT_CALLS, "Number of MMR3HeapRealloc() calls.",      "/MM/R3Heap/%s/cReallocations", pszTag);
        STAMR3RegisterFU(pUVM, &pStat->cFrees,         STAMTYPE_U64, STAMVISIBILITY_ALWAYS,  STAMUNIT_CALLS, "Number of MMR3HeapFree() calls.",         "/MM/R3Heap/%s/cFrees", pszTag);
        STAMR3RegisterFU(pUVM, &pStat->cFailures,      STAMTYPE_U64, STAMVISIBILITY_ALWAYS,  STAMUNIT_COUNT, "Number of failures.",                     "/MM/R3Heap/%s/cFailures", pszTag);
        STAMR3RegisterFU(pUVM, &pStat->cbAllocated,    STAMTYPE_U64, STAMVISIBILITY_ALWAYS,  STAMUNIT_BYTES, "Total number of bytes allocated.",        "/MM/R3Heap/%s/cbAllocated", pszTag);
        STAMR3RegisterFU(pUVM, &pStat->cbFreed,        STAMTYPE_U64, STAMVISIBILITY_ALWAYS,  STAMUNIT_BYTES, "Total number of bytes freed.",            "/MM/R3Heap/%s/cbFreed", pszTag);
    }
#endif

    /*
     * Validate input.
     */
    if (cbSize == 0)
    {
#ifdef MMR3HEAP_WITH_STATISTICS
        RTCritSectEnter(&pHeap->Lock);
        pStat->cFailures++;
        pHeap->Stat.cFailures++;
        RTCritSectLeave(&pHeap->Lock);
#endif
        return NULL;
    }

    /*
     * Allocate heap block.
     */
    cbSize = RT_ALIGN_Z(cbSize, MMR3HEAP_SIZE_ALIGNMENT) + sizeof(MMHEAPHDR);
    PMMHEAPHDR  pHdr = (PMMHEAPHDR)(fZero ? RTMemAllocZ(cbSize) : RTMemAlloc(cbSize));
    if (!pHdr)
    {
        AssertMsgFailed(("Failed to allocate heap block %d, enmTag=%x(%.4s).\n", cbSize, enmTag, &enmTag));
#ifdef MMR3HEAP_WITH_STATISTICS
        RTCritSectEnter(&pHeap->Lock);
        pStat->cFailures++;
        pHeap->Stat.cFailures++;
        RTCritSectLeave(&pHeap->Lock);
#endif
        return NULL;
    }
    Assert(!((uintptr_t)pHdr & (RTMEM_ALIGNMENT - 1)));

    RTCritSectEnter(&pHeap->Lock);

    /*
     * Init and link in the header.
     */
    pHdr->pNext = NULL;
    pHdr->pPrev = pHeap->pTail;
    if (pHdr->pPrev)
        pHdr->pPrev->pNext = pHdr;
    else
        pHeap->pHead = pHdr;
//.........这里部分代码省略.........

/**
 * Get Parallel port address and update the shared data
 * structure.
 * @returns VBox status code.
 * @param   pThis    The host parallel port instance data.
 */
static int drvWinHostGetparportAddr(PDRVHOSTPARALLEL pThis)
{
    HDEVINFO hDevInfo;
    SP_DEVINFO_DATA DeviceInfoData;
    uint32_t u32Idx;
    uint32_t u32ParportAddr;
    int rc = VINF_SUCCESS;

    hDevInfo = SetupDiGetClassDevs(NULL, 0, 0, DIGCF_PRESENT | DIGCF_ALLCLASSES);
    if (hDevInfo == INVALID_HANDLE_VALUE)
        return VERR_INVALID_HANDLE;

    /* Enumerate through all devices in Set. */
    DeviceInfoData.cbSize = sizeof(SP_DEVINFO_DATA);
    for (u32Idx = 0; SetupDiEnumDeviceInfo(hDevInfo, u32Idx, &DeviceInfoData); u32Idx++)
    {
        DWORD dwDataType;
        uint8_t *pBuf = NULL;
        DWORD dwBufSize = 0;

        while (!SetupDiGetDeviceRegistryProperty(hDevInfo, &DeviceInfoData, SPDRP_FRIENDLYNAME,
                                                 (PDWORD)&dwDataType, (uint8_t *)pBuf,
                                                 dwBufSize, (PDWORD)&dwBufSize))
        {
            if (GetLastError() == ERROR_INSUFFICIENT_BUFFER)
            {
                LogFlow(("ERROR_INSUFF_BUFF = %d. dwBufSz = %d\n", GetLastError(), dwBufSize));
                if (pBuf)
                    RTMemFree(pBuf);
                pBuf = (uint8_t *)RTMemAlloc(dwBufSize * 2);
            }
            else
            {
                /* No need to bother about this error (in most cases its errno=13,
                 * INVALID_DATA . Just break from here and proceed to next device
                 * enumerated item
                 */
                LogFlow(("GetDevProp Error = %d & dwBufSz = %d\n", GetLastError(), dwBufSize));
                break;
            }
        }

        if (RTStrStr((char*)pBuf, "LPT"))
        {
            u32ParportAddr = drvHostWinFindIORangeResource(DeviceInfoData.DevInst);
            if (u32ParportAddr)
            {
                /* Find parallel port name and update the shared data struncture */
                char *pCh = RTStrStr((char*)pBuf, "(");
                char *pTmpCh = RTStrStr((char *)pBuf, ")");
                /* check for the confirmation for the availability of parallel port */
                if (!(pCh && pTmpCh))
                {
                    LogFlowFunc(("Parallel port Not Found. \n"));
                    return VERR_NOT_FOUND;

                }
                if (((pTmpCh - (char *)pBuf) - (pCh - (char *)pBuf)) < 0) {
                    LogFlowFunc(("Parallel port string not properly formatted.\n"));
                    return VERR_NOT_FOUND;
                }
                /* check for the confirmation for the availability of parallel port */
                if (RTStrCopyEx((char *)(pThis->szParportName), sizeof(pThis->szParportName),
                    pCh+1, ((pTmpCh - (char *)pBuf) - (pCh - (char *)pBuf)) - 1))
                {
                    LogFlowFunc(("Parallel Port Not Found.\n"));
                    return VERR_NOT_FOUND;
                }
                *((char *)pThis->szParportName + (pTmpCh - (char *)pBuf) - (pCh - (char *)pBuf) + 1 ) = '\0';

                /* checking again to make sure that we have got a valid name and in valid format too. */
                if (RTStrNCmp((char *)pThis->szParportName, "LPT", 3)) {
                    LogFlowFunc(("Parallel Port name \"LPT\" Not Found.\n"));
                    return VERR_NOT_FOUND;
                }
                if (!RTStrStr((char *)pThis->szParportName, "LPT")
                    || !(pThis->szParportName[3] >= '0'
                    && pThis->szParportName[3] <= '9'))
                {
                    RT_BZERO(pThis->szParportName, sizeof(pThis->szParportName));
                    LogFlowFunc(("Printer Port Name Not Found.\n"));
                    return VERR_NOT_FOUND;
                }
                pThis->fParportAvail     = true;
                pThis->u32LptAddr        = u32ParportAddr;
                pThis->u32LptAddrControl = pThis->u32LptAddr + CTRL_REG_OFFSET;
                pThis->u32LptAddrStatus  = pThis->u32LptAddr + STATUS_REG_OFFSET;
            }
            else
                LogFlowFunc(("u32Parport Addr No Available \n"));
            if (pThis->fParportAvail)
                break;
        }
        if (pBuf)
//.........这里部分代码省略.........

/**
 * Find IO port range for the parallel port and return the lower address.
 *
 * @returns parallel port IO address.
 * @param   DevInst    Device Instance for parallel port.
 */
static uint32_t drvHostWinFindIORangeResource(const DEVINST DevInst)
{
    uint8_t  *pBuf  = NULL;
    short     wHeaderSize;
    uint32_t  u32Size;
    CONFIGRET cmRet;
    LOG_CONF  firstLogConf;
    LOG_CONF  nextLogConf;
    RES_DES   rdPrevResDes;
    uint32_t  u32ParportAddr = 0;

    wHeaderSize = sizeof(IO_DES);
    cmRet = CM_Get_First_Log_Conf(&firstLogConf, DevInst, ALLOC_LOG_CONF);
    if (cmRet != CR_SUCCESS)
    {
        cmRet = CM_Get_First_Log_Conf(&firstLogConf, DevInst, BOOT_LOG_CONF);
        if (cmRet != CR_SUCCESS)
            return 0;
    }
    cmRet = CM_Get_Next_Res_Des(&nextLogConf, firstLogConf, 2, 0L, 0L);
    if (cmRet != CR_SUCCESS)
    {
        CM_Free_Res_Des_Handle(firstLogConf);
        return 0;
    }
    /* This loop is based on the fact that only one resourece is assigned to
     * the LPT port. If multiple resources (address range) are assigned to
     * to LPT port, it will pick and return the last one
     */
    for (;;)
    {
        u32Size = 0;
        cmRet = CM_Get_Res_Des_Data_Size((PULONG)(&u32Size), nextLogConf, 0L);
        if (cmRet != CR_SUCCESS)
        {
            LogFlowFunc(("Failed to get Size \n"));
            CM_Free_Res_Des_Handle(nextLogConf);
            break;
        }

        pBuf = (uint8_t *)RTMemAlloc(u32Size + 1);
        if (!pBuf)
        {
            LogFlowFunc(("Failed to get Buf %d\n", u32Size));
            CM_Free_Res_Des_Handle(nextLogConf);
            break;
        }
        cmRet = CM_Get_Res_Des_Data(nextLogConf, pBuf, u32Size, 0L);
        if (cmRet != CR_SUCCESS)
        {
            LogFlowFunc(("Failed to get Des Data \n"));
            CM_Free_Res_Des_Handle(nextLogConf);
            if (pBuf)
                RTMemFree(pBuf);
            break;
        }

        LogFlowFunc(("call GetIOResource\n"));
        if (pBuf)
            u32ParportAddr = ((IO_DES *)pBuf)->IOD_Alloc_Base;
        LogFlowFunc(("called GetIOResource, ret=%#x\n", u32ParportAddr));
        rdPrevResDes = 0;
        cmRet = CM_Get_Next_Res_Des(&rdPrevResDes,
                                    nextLogConf,
                                    2,
                                    0L,
                                    0L);
        if (pBuf)
            RTMemFree(pBuf);
        if (cmRet != CR_SUCCESS)
           break;

        CM_Free_Res_Des_Handle(nextLogConf);
        nextLogConf = rdPrevResDes;
    }
    CM_Free_Res_Des_Handle(nextLogConf);
    LogFlowFunc(("return u32ParportAddr=%#x", u32ParportAddr));
    return u32ParportAddr;
}

int vbsfPathGuestToHost(SHFLCLIENTDATA *pClient, SHFLROOT hRoot,
                        PCSHFLSTRING pGuestString, uint32_t cbGuestString,
                        char **ppszHostPath, uint32_t *pcbHostPathRoot,
                        uint32_t fu32Options,
                        uint32_t *pfu32PathFlags)
{
#ifdef VBOX_STRICT
    /*
     * Check that the pGuestPath has correct size and encoding.
     */
    if (ShflStringIsValidIn(pGuestString, cbGuestString, RT_BOOL(pClient->fu32Flags & SHFL_CF_UTF8)) == false)
    {
        LogFunc(("Invalid input string\n"));
        return VERR_INTERNAL_ERROR;
    }
#else
    NOREF(cbGuestString);
#endif

    /*
     * Resolve the root handle into a string.
     */
    uint32_t cbRootLen = 0;
    const char *pszRoot = NULL;
    int rc = vbsfMappingsQueryHostRootEx(hRoot, &pszRoot, &cbRootLen);
    if (RT_FAILURE(rc))
    {
        LogFunc(("invalid root\n"));
        return rc;
    }

    AssertReturn(cbRootLen > 0, VERR_INTERNAL_ERROR_2); /* vbsfMappingsQueryHostRootEx ensures this. */

    /*
     * Get the UTF8 string with the relative path provided by the guest.
     * If guest uses UTF-16 then convert it to UTF-8.
     */
    uint32_t    cbGuestPath = 0;        /* Shut up MSC */
    const char *pchGuestPath = NULL;    /* Ditto. */
    char *pchGuestPathAllocated = NULL; /* Converted from UTF-16. */
    if (BIT_FLAG(pClient->fu32Flags, SHFL_CF_UTF8))
    {
        /* UTF-8 */
        cbGuestPath = pGuestString->u16Length;
        pchGuestPath = pGuestString->String.ach;
    }
    else
    {
        /* UTF-16 */

#ifdef RT_OS_DARWIN /* Misplaced hack! See todo! */
        uint32_t cwcSrc  = 0;
        PRTUTF16 pwszSrc = NULL;
        rc = vbsfNormalizeStringDarwin(&pGuestString->String.ucs2[0],
                                       pGuestString->u16Length / sizeof(RTUTF16),
                                       &pwszSrc, &cwcSrc);
#else
        uint32_t  const cwcSrc  = pGuestString->u16Length / sizeof(RTUTF16);
        PCRTUTF16 const pwszSrc = &pGuestString->String.ucs2[0];
#endif

        if (RT_SUCCESS(rc))
        {
            size_t cbPathAsUtf8 = RTUtf16CalcUtf8Len(pwszSrc);
            if (cbPathAsUtf8 >= cwcSrc)
            {
                /* Allocate buffer that will be able to contain the converted UTF-8 string. */
                pchGuestPathAllocated = (char *)RTMemAlloc(cbPathAsUtf8 + 1);
                if (RT_LIKELY(pchGuestPathAllocated != NULL))
                {
                    if (RT_LIKELY(cbPathAsUtf8))
                    {
                        size_t cchActual;
                        char *pszDst = pchGuestPathAllocated;
                        rc = RTUtf16ToUtf8Ex(pwszSrc, cwcSrc, &pszDst, cbPathAsUtf8 + 1, &cchActual);
                        AssertRC(rc);
                        AssertStmt(RT_FAILURE(rc) || cchActual == cbPathAsUtf8, rc = VERR_INTERNAL_ERROR_4);
                        Assert(strlen(pszDst) == cbPathAsUtf8);
                    }

                    if (RT_SUCCESS(rc))
                    {
                        /* Terminate the string. */
                        pchGuestPathAllocated[cbPathAsUtf8] = '\0';

                        cbGuestPath = (uint32_t)cbPathAsUtf8; Assert(cbGuestPath == cbPathAsUtf8);
                        pchGuestPath = pchGuestPathAllocated;
                    }
                }
                else
                {
                    rc = VERR_NO_MEMORY;
                }
            }
            else
            {
                AssertFailed();
                rc = VERR_INTERNAL_ERROR_3;
            }

//.........这里部分代码省略.........

RTDECL(int) RTTimerCreate(PRTTIMER *ppTimer, unsigned uMilliesInterval, PFNRTTIMER pfnTimer, void *pvUser)
{
#ifndef USE_WINMM
    /*
     * On windows we'll have to set the timer resolution before
     * we start the timer.
     */
    ULONG ulMax = UINT32_MAX;
    ULONG ulMin = UINT32_MAX;
    ULONG ulCur = UINT32_MAX;
    NtQueryTimerResolution(&ulMax, &ulMin, &ulCur);
    Log(("NtQueryTimerResolution -> ulMax=%lu00ns ulMin=%lu00ns ulCur=%lu00ns\n", ulMax, ulMin, ulCur));
    if (ulCur > ulMin && ulCur > 10000 /* = 1ms */)
    {
        if (NtSetTimerResolution(10000, TRUE, &ulCur) >= 0)
            Log(("Changed timer resolution to 1ms.\n"));
        else if (NtSetTimerResolution(20000, TRUE, &ulCur) >= 0)
            Log(("Changed timer resolution to 2ms.\n"));
        else if (NtSetTimerResolution(40000, TRUE, &ulCur) >= 0)
            Log(("Changed timer resolution to 4ms.\n"));
        else if (ulMin <= 50000 && NtSetTimerResolution(ulMin, TRUE, &ulCur) >= 0)
            Log(("Changed timer resolution to %lu *100ns.\n", ulMin));
        else
        {
            AssertMsgFailed(("Failed to configure timer resolution!\n"));
            return VERR_INTERNAL_ERROR;
        }
    }
#endif /* !USE_WINN */

    /*
     * Create new timer.
     */
    int rc = VERR_IPE_UNINITIALIZED_STATUS;
    PRTTIMER pTimer = (PRTTIMER)RTMemAlloc(sizeof(*pTimer));
    if (pTimer)
    {
        pTimer->u32Magic    = RTTIMER_MAGIC;
        pTimer->pvUser      = pvUser;
        pTimer->pfnTimer    = pfnTimer;
        pTimer->iTick       = 0;
        pTimer->uMilliesInterval = uMilliesInterval;
#ifdef USE_WINMM
        /* sync kill doesn't work. */
        pTimer->TimerId     = timeSetEvent(uMilliesInterval, 0, rttimerCallback, (DWORD_PTR)pTimer, TIME_PERIODIC | TIME_CALLBACK_FUNCTION);
        if (pTimer->TimerId)
        {
            ULONG ulMax = UINT32_MAX;
            ULONG ulMin = UINT32_MAX;
            ULONG ulCur = UINT32_MAX;
            NtQueryTimerResolution(&ulMax, &ulMin, &ulCur);
            Log(("NtQueryTimerResolution -> ulMax=%lu00ns ulMin=%lu00ns ulCur=%lu00ns\n", ulMax, ulMin, ulCur));

            *ppTimer = pTimer;
            return VINF_SUCCESS;
        }
        rc = VERR_INVALID_PARAMETER;

#else /* !USE_WINMM */

        /*
         * Create Win32 event semaphore.
         */
        pTimer->iError = 0;
        pTimer->hTimer = CreateWaitableTimer(NULL, TRUE, NULL);
        if (pTimer->hTimer)
        {
#ifdef USE_APC
            /*
             * Create wait semaphore.
             */
            pTimer->hevWait = CreateEvent(NULL, FALSE, FALSE, NULL);
            if (pTimer->hevWait)
#endif
            {
                /*
                 * Kick off the timer thread.
                 */
                rc = RTThreadCreate(&pTimer->Thread, rttimerCallback, pTimer, 0, RTTHREADTYPE_TIMER, RTTHREADFLAGS_WAITABLE, "Timer");
                if (RT_SUCCESS(rc))
                {
                    /*
                     * Wait for the timer to successfully create the timer
                     * If we don't get a response in 10 secs, then we assume we're screwed.
                     */
                    rc = RTThreadUserWait(pTimer->Thread, 10000);
                    if (RT_SUCCESS(rc))
                    {
                        rc = pTimer->iError;
                        if (RT_SUCCESS(rc))
                        {
                            *ppTimer = pTimer;
                            return VINF_SUCCESS;
                        }
                    }
                    ASMAtomicXchgU32(&pTimer->u32Magic, RTTIMER_MAGIC + 1);
                    RTThreadWait(pTimer->Thread, 250, NULL);
                    CancelWaitableTimer(pTimer->hTimer);
                }
#ifdef USE_APC
//.........这里部分代码省略.........

/**
 * Corrects the casing of the final component
 *
 * @returns
 * @param   pClient             .
 * @param   pszFullPath         .
 * @param   pszStartComponent   .
 */
static int vbsfCorrectCasing(SHFLCLIENTDATA *pClient, char *pszFullPath, char *pszStartComponent)
{
    Log2(("vbsfCorrectCasing: %s %s\n", pszFullPath, pszStartComponent));

    AssertReturn((uintptr_t)pszFullPath < (uintptr_t)pszStartComponent - 1U, VERR_INTERNAL_ERROR_2);
    AssertReturn(pszStartComponent[-1] == RTPATH_DELIMITER, VERR_INTERNAL_ERROR_5);

    /*
     * Allocate a buffer that can hold really long file name entries as well as
     * the initial search pattern.
     */
    size_t cchComponent = strlen(pszStartComponent);
    size_t cchParentDir = pszStartComponent - pszFullPath;
    size_t cchFullPath  = cchParentDir + cchComponent;
    Assert(strlen(pszFullPath) == cchFullPath);

    size_t cbDirEntry   = 4096;
    if (cchFullPath + 4 > cbDirEntry - RT_OFFSETOF(RTDIRENTRYEX, szName))
        cbDirEntry = RT_OFFSETOF(RTDIRENTRYEX, szName) + cchFullPath + 4;

    PRTDIRENTRYEX pDirEntry = (PRTDIRENTRYEX)RTMemAlloc(cbDirEntry);
    if (pDirEntry == NULL)
        return VERR_NO_MEMORY;

    /*
     * Construct the search criteria in the szName member of pDirEntry.
     */
    /** @todo This is quite inefficient, especially for directories with many
     *        files.  If any of the typically case sensitive host systems start
     *        supporting opendir wildcard filters, it would make sense to build
     *        one here with '?' for case foldable charaters. */
    /** @todo Use RTDirOpen here and drop the whole uncessary path copying? */
    int rc = RTPathJoinEx(pDirEntry->szName, cbDirEntry - RT_OFFSETOF(RTDIRENTRYEX, szName),
                          pszFullPath, cchParentDir,
                          RT_STR_TUPLE("*"));
    AssertRC(rc);
    if (RT_SUCCESS(rc))
    {
        RTDIR hSearch = NULL;
        rc = RTDirOpenFiltered(&hSearch, pDirEntry->szName, RTDIRFILTER_WINNT, 0 /*fFlags*/);
        if (RT_SUCCESS(rc))
        {
            for (;;)
            {
                size_t cbDirEntrySize = cbDirEntry;

                rc = RTDirReadEx(hSearch, pDirEntry, &cbDirEntrySize, RTFSOBJATTRADD_NOTHING, SHFL_RT_LINK(pClient));
                if (rc == VERR_NO_MORE_FILES)
                    break;

                if (   rc != VINF_SUCCESS
                    && rc != VWRN_NO_DIRENT_INFO)
                {
                    if (   rc == VERR_NO_TRANSLATION
                        || rc == VERR_INVALID_UTF8_ENCODING)
                        continue;
                    AssertMsgFailed(("%Rrc\n", rc));
                    break;
                }

                Log2(("vbsfCorrectCasing: found %s\n", &pDirEntry->szName[0]));
                if (    pDirEntry->cbName == cchComponent
                    &&  !RTStrICmp(pszStartComponent, &pDirEntry->szName[0]))
                {
                    Log(("Found original name %s (%s)\n", &pDirEntry->szName[0], pszStartComponent));
                    strcpy(pszStartComponent, &pDirEntry->szName[0]);
                    rc = VINF_SUCCESS;
                    break;
                }
            }

            RTDirClose(hSearch);
        }
    }

    if (RT_FAILURE(rc))
        Log(("vbsfCorrectCasing %s failed with %Rrc\n", pszStartComponent, rc));

    RTMemFree(pDirEntry);

    return rc;
}