C++ InterlockedExchange函数代码示例

/// <summary>
/// processes incoming image
/// </summary>
/// <returns>error code, refer to AL_XXX codes</returns>
/// <remarks>
/// working parallel code with single loop, using active waits to protect data dependencies
/// [Filter processing of full resolution image] in [1.131 seconds]
/// </remarks>
int CParallelActiveWaitAltaLuxFilter::Run()
{
    if (ClipLimit == 1.0)
        return AL_OK;	  //< is OK, immediately returns original image

    PixelType *pImage = (PixelType *)ImageBuffer;

    /// pulMapArray is pointer to mappings
    unsigned int *pulMapArray = new unsigned int[NumHorRegions * NumVertRegions * NUM_GRAY_LEVELS];
    if (pulMapArray == 0)
        return AL_OUT_OF_MEMORY;	  //< not enough memory

    /// region pixel count
    unsigned int NumPixels = (unsigned int)RegionWidth * (unsigned int)RegionHeight;	//< region pixel count

    unsigned int ulClipLimit;		//< clip limit
    if (ClipLimit > 0.0)
    {
        /// calculate actual cliplimit
        ulClipLimit = (unsigned int) (ClipLimit * (RegionWidth * RegionHeight) / NUM_GRAY_LEVELS);
        ulClipLimit = (ulClipLimit < 1UL) ? 1UL : ulClipLimit;
    }
    else
        ulClipLimit = 1UL<<14;		  //< large value, do not clip (AHE)

    /// Interpolate greylevel mappings to get CLAHE image
    // create events for signaling that the first phase is completed
    __declspec(align(32)) volatile LONG FirstPhaseCompleted[MAX_VERT_REGIONS+1];
    for (int i = 0; i <= NumVertRegions; i++)
        InterlockedExchange((volatile LONG*)&FirstPhaseCompleted[i], -1);

    concurrency::parallel_for((LONG)0, (LONG)(NumVertRegions + 1), [&](LONG uiY)
    {
        // first half
        PixelType* pImPointer = pImage;
        if (uiY > 0)
            pImPointer += ((RegionHeight >> 1) + ((uiY - 1) * RegionHeight)) * OriginalImageWidth;

        if (uiY < NumVertRegions)
        {
            /// calculate greylevel mappings for each contextual region
            for (LONG uiX = 0; uiX < NumHorRegions; uiX++, pImPointer += RegionWidth)
            {
                unsigned int *pHistogram = &pulMapArray[NUM_GRAY_LEVELS * (uiY * NumHorRegions + uiX)];
                MakeHistogram(pImPointer, pHistogram);
                ClipHistogram(pHistogram, ulClipLimit);
                MapHistogram(pHistogram, NumPixels);
                InterlockedExchange((volatile LONG*) &FirstPhaseCompleted[uiY], uiX);
            }
        }

        // second half
        unsigned int uiSubX, uiSubY;	//< size of subimages
        unsigned int uiXL, uiXR, uiYU, uiYB;	//< auxiliary variables interpolation routine

        pImPointer = pImage;
        if (uiY > 0)
            pImPointer += ((RegionHeight >> 1) + ((uiY - 1) * RegionHeight)) * OriginalImageWidth;

        if (uiY == 0)
        {
            /// special case: top row
            uiSubY = RegionHeight >> 1;
            uiYU = 0;
            uiYB = 0;
        } else {

//.........这里部分代码省略.........
Return Value:

    None.

--*/

{

    PIRP pIrp;
    PIRB pIrb;
    PDCAM_EXTENSION pDevExt;
    PSTREAMEX pStrmEx;
    NTSTATUS Status;

    PAGED_CODE();

    pIrb = (PIRB) pSrb->SRBExtension;
    ASSERT(pIrb);
    pDevExt = (PDCAM_EXTENSION) pSrb->HwDeviceExtension;
    ASSERT(pDevExt);


    //
    // Set this to stop accepting incoming read.
    //

    pDevExt->bDevRemoved = TRUE;


    //
    // Wait until all pending work items are completed!
    //

    KeWaitForSingleObject( &pDevExt->PendingWorkItemEvent, Executive, KernelMode, FALSE, NULL );


    //
    // Wait for currect read to be attached so we cancel them all.
    //

    pStrmEx = pDevExt->pStrmEx;
    if(pStrmEx) {
        // Make sure that this structure is still valid.
        if(pStrmEx->pVideoInfoHeader) {
            KeWaitForSingleObject( &pStrmEx->hMutex, Executive, KernelMode, FALSE, 0 );
            KeReleaseMutex(&pStrmEx->hMutex, FALSE);
        }
    }

    pIrp = IoAllocateIrp(pDevExt->BusDeviceObject->StackSize, FALSE);
    if(!pIrp) {
        ERROR_LOG(("DCamSurpriseRemovalPacket: faile to get resource; pIrb=%p, pDevExt=%p, pIrp\n", pIrb, pDevExt));
        pSrb->Status = STATUS_INSUFFICIENT_RESOURCES;
        StreamClassDeviceNotification(DeviceRequestComplete, pSrb->HwDeviceExtension, pSrb);
        return;
    }


    //
    // un-register a bus reset callback notification
    //

    pIrb->FunctionNumber = REQUEST_BUS_RESET_NOTIFICATION;
    pIrb->Flags = 0;
    pIrb->u.BusResetNotification.fulFlags = DEREGISTER_NOTIFICATION_ROUTINE;
    pIrb->u.BusResetNotification.ResetRoutine = (PBUS_BUS_RESET_NOTIFICATION) DCamBusResetNotification;
    pIrb->u.BusResetNotification.ResetContext = 0;
    Status = DCamSubmitIrpSynch(pDevExt, pIrp, pIrb);
    if(Status) {
        ERROR_LOG(("DCamSurpriseRemoval: Status %x while trying to deregister bus reset notification.\n", Status));
    }


    if(pStrmEx && pStrmEx->pVideoInfoHeader) {
        //
        // Stop isoch transmission so we can detach buffers and cancel pending SRBs
        //
        pIrb->FunctionNumber        = REQUEST_ISOCH_STOP;
        pIrb->Flags                 = 0;
        pIrb->u.IsochStop.hResource = pDevExt->hResource;
        pIrb->u.IsochStop.fulFlags  = 0;
        Status = DCamSubmitIrpSynch(pDevExt, pIrp, pIrb);
        if(Status) {
            ERROR_LOG(("DCamSurpriseRemoval: Status %x while trying to ISOCH_STOP.\n", Status));
        }
        IoFreeIrp(pIrp);

        if( InterlockedExchange((PLONG)&pStrmEx->CancelToken, 1 ) == 0 ) {
            DCamCancelAllPackets(
                pDevExt,
                &pDevExt->PendingReadCount );
        }
        COMPLETE_SRB( pSrb );

    } else {
        IoFreeIrp(pIrp);
        StreamClassDeviceNotification(DeviceRequestComplete, pSrb->HwDeviceExtension, pSrb);
    }

}

AtomicCounter& AtomicCounter::operator = (AtomicCounter::ValueType value)
{
	InterlockedExchange(&_counter, value);
	return *this;
}

/* Release spin lock */
static int slrelease (LOCKLONG *sl)
{
    InterlockedExchange ((volatile LONG*)sl, 0);
    return 0;
}

//.........这里部分代码省略.........
		}

		if (ModalStackCount)
		{
			ActivateFrame(ModalStack[ModalStackCount-1]);
		}
	}

	for (int i=0; i<FrameCount; i++)
	{
		if (FrameList[i]->FrameToBack==DeletedFrame)
		{
			FrameList[i]->FrameToBack=CtrlObject->Cp();
		}
	}

	int FrameIndex=IndexOf(DeletedFrame);

	if (-1!=FrameIndex)
	{
		DeletedFrame->DestroyAllModal();

		for (int j=FrameIndex; j<FrameCount-1; j++)
		{
			FrameList[j]=FrameList[j+1];
		}

		FrameCount--;

		if (FramePos >= FrameCount)
		{
			FramePos=0;
		}

		if (DeletedFrame->FrameToBack==CtrlObject->Cp())
		{
			ActivateFrame(FrameList[FramePos]);
		}
		else
		{
			ActivateFrame(DeletedFrame->FrameToBack);
		}
	}

	/* $ 14.05.2002 SKV
	  Долго не мог понять, нужен всё же этот код или нет.
	  Но вроде как нужен.
	  SVS> Когда понадобится - в некоторых местах расскомментить куски кода
	       помеченные скобками <ifDoubleInstance>

	if (ifDoubI && IsSemiModalBackFrame(ActivatedFrame)){
	  for(int i=0;i<ModalStackCount;i++)
	  {
	    if(ModalStack[i]==ActivatedFrame)
	    {
	      break;
	    }
	  }

	  if(i==ModalStackCount)
	  {
	    if (ModalStackCount == ModalStackSize){
	      ModalStack = (Frame **) xf_realloc (ModalStack, ++ModalStackSize * sizeof (Frame *));
	    }
	    ModalStack[ModalStackCount++]=ActivatedFrame;
	  }
	}
	*/
	DeletedFrame->OnDestroy();

	if (CurrentFrame==DeletedFrame)
	{
		CurrentFrame=0;
		InterlockedExchange(&CurrentWindowType,-1);
	}

	if (DeletedFrame->GetDynamicallyBorn())
	{
		_MANAGER(SysLog(L"delete DeletedFrame %p", DeletedFrame));

		/* $ 14.05.2002 SKV
		  Так как в деструкторе фрэйма неявно может быть
		  вызван commit, то надо подстраховаться.
		*/
		Frame *tmp=DeletedFrame;
		DeletedFrame=nullptr;
		delete tmp;
	}

	// Полагаемся на то, что в ActevateFrame не будет переписан уже
	// присвоенный  ActivatedFrame
	if (ModalStackCount)
	{
		ActivateFrame(ModalStack[ModalStackCount-1]);
	}
	else
	{
		ActivateFrame(FramePos);
	}
}

// 
// Add fault to Lurn fault list for future analysys
// 
// ErrorCode is dependent on fault type. It can be custom error code.
//
// Param is Type dependent parameter.
// Param is CCB if / Ccb is valid only for fault type LURN_ERR_IO, LURN_ERR_LOCK
//
NTSTATUS
LurnRecordFault(PLURELATION_NODE Lurn, LURN_FAULT_TYPE Type, UINT32 ErrorCode, PVOID Param)
{
	PLURN_FAULT_INFO fInfo = &Lurn->FaultInfo;
	LONG count;
	LURN_FAULT_TYPE	LastFaultType;
	LONG			LastErrorCode;
	PLURN_FAULT_IO pLfi= (PLURN_FAULT_IO) Param;

	LastFaultType = fInfo->LastFaultType;
	LastErrorCode = fInfo->LastErrorCode[LastFaultType];

	//
	// To do: Recognize some indirect error patterns.
	//

#if 0
	//
	// Check accesing same range failed.
	//
	if ((Type == LURN_ERR_READ || Type == LURN_ERR_WRITE || Type == LURN_ERR_VERIFY) && pLfi &&
		(ErrorCode == LURN_FAULT_COMMUNICATION))	{
		if (fInfo->LastIoOperation) {
			//
			// Check accesing same range failed and error occured multiple times.
			//
			if (fInfo->LastIoAddr + fInfo->LastIoLength > pLfi->Address 
				&& pLfi->Address+pLfi->Length > fInfo->LastIoAddr &&
						fInfo->ErrorCount[Type] > 5) {
				KDPrintM(NDASSCSI_DBG_LUR_ERROR, ("IO failed on same location. Marking error\n"));
				ErrorCode = LURN_FAULT_BAD_SECTOR;
			}
		} else {
			// no previous IO error recorded.
		}
	}
#endif
	//
	// to do: handle disk hang after bad sector..
	//
	
	// 
	// Update internal fault record.
	//		
	switch(Type) {
	case LURN_ERR_SUCCESS:
		count = InterlockedIncrement(&fInfo->ErrorCount[Type]);
		if (count == 128) {
			KDPrintM(NDASSCSI_DBG_LUR_TRACE, ("Resetting error count\n"));

			//
			// If some IO operation completed without any error, clear all other errors.
			//
			LurnResetFaultInfo(Lurn);
			InterlockedExchange(&fInfo->ErrorCount[Type], count);
		}
		break;
	case LURN_ERR_CONNECT:
	case LURN_ERR_LOGIN:
	case LURN_ERR_NDAS_OP:
	case LURN_ERR_DISK_OP:
	case LURN_ERR_READ:
	case LURN_ERR_WRITE: 
	case LURN_ERR_VERIFY: 		
	case LURN_ERR_UNKNOWN:
	case LURN_ERR_FLUSH:
	default:		
		// Error occured. Reset success count
		InterlockedExchange(&fInfo->ErrorCount[LURN_ERR_SUCCESS], 0);
		InterlockedIncrement(&fInfo->ErrorCount[Type]);
		InterlockedExchange(&fInfo->LastErrorCode[Type], ErrorCode);
		fInfo->LastFaultType = Type;
		KeQuerySystemTime(&fInfo->LastFaultTime);
		break;
	}

	if (Type == LURN_ERR_READ || Type == LURN_ERR_WRITE) {
		if (pLfi) {
			fInfo->LastIoOperation = Type;
			fInfo->LastIoAddr = pLfi->Address;
			fInfo->LastIoLength = pLfi->Length;
		}
	}

	//
	// Update error causes.
	//

	//
	// Guess error cause.  Be cautious when setting error because this can mark a disk as defective permanently.
	//
	if (Type == LURN_ERR_CONNECT) {
//.........这里部分代码省略.........

/*
 * Monotonic and real time functions
 */
unsigned __stdcall wince_clock_gettime_threaded(void* param)
{
    LARGE_INTEGER hires_counter, li_frequency;
    LONG nb_responses;
    int timer_index;

    // Init - find out if we have access to a monotonic (hires) timer
    if (!QueryPerformanceFrequency(&li_frequency)) {
        usbi_dbg("no hires timer available on this platform");
        hires_frequency = 0;
        hires_ticks_to_ps = UINT64_C(0);
    } else {
        hires_frequency = li_frequency.QuadPart;
        // The hires frequency can go as high as 4 GHz, so we'll use a conversion
        // to picoseconds to compute the tv_nsecs part in clock_gettime
        hires_ticks_to_ps = UINT64_C(1000000000000) / hires_frequency;
        usbi_dbg("hires timer available (Frequency: %"PRIu64" Hz)", hires_frequency);
    }

    // Signal wince_init() that we're ready to service requests
    if (ReleaseSemaphore(timer_response, 1, NULL) == 0) {
        usbi_dbg("unable to release timer semaphore: %s", windows_error_str(0));
    }

    // Main loop - wait for requests
    while (1) {
        timer_index = WaitForMultipleObjects(2, timer_request, FALSE, INFINITE) - WAIT_OBJECT_0;
        if ( (timer_index != 0) && (timer_index != 1) ) {
            usbi_dbg("failure to wait on requests: %s", windows_error_str(0));
            continue;
        }
        if (request_count[timer_index] == 0) {
            // Request already handled
            ResetEvent(timer_request[timer_index]);
            // There's still a possiblity that a thread sends a request between the
            // time we test request_count[] == 0 and we reset the event, in which case
            // the request would be ignored. The simple solution to that is to test
            // request_count again and process requests if non zero.
            if (request_count[timer_index] == 0)
                continue;
        }
        switch (timer_index) {
        case 0:
            WaitForSingleObject(timer_mutex, INFINITE);
            // Requests to this thread are for hires always
            if (QueryPerformanceCounter(&hires_counter) != 0) {
                timer_tp.tv_sec = (long)(hires_counter.QuadPart / hires_frequency);
                timer_tp.tv_nsec = (long)(((hires_counter.QuadPart % hires_frequency)/1000) * hires_ticks_to_ps);
            } else {
                // Fallback to real-time if we can't get monotonic value
                // Note that real-time clock does not wait on the mutex or this thread.
                wince_clock_gettime(USBI_CLOCK_REALTIME, &timer_tp);
            }
            ReleaseMutex(timer_mutex);

            nb_responses = InterlockedExchange((LONG*)&request_count[0], 0);
            if ( (nb_responses)
                    && (ReleaseSemaphore(timer_response, nb_responses, NULL) == 0) ) {
                usbi_dbg("unable to release timer semaphore: %s", windows_error_str(0));
            }
            continue;
        case 1: // time to quit
            usbi_dbg("timer thread quitting");
            return 0;
        }
    }
    usbi_dbg("ERROR: broken timer thread");
    return 1;
}

//.........这里部分代码省略.........
	{
		hWaitEvents[nEventCount ++] = ::CreateThread(NULL, 0, _WorkerThreadProc, pThis, 0, NULL);
	}

	// 下面进入无限循环，处理事件对象数组中的事件
	while(TRUE)
	{
		int nIndex = ::WSAWaitForMultipleEvents(nEventCount, hWaitEvents, FALSE, 1000, FALSE);
	
		// 首先检查是否要停止服务
		if(pThis->m_bShutDown || nIndex == WSA_WAIT_FAILED)
		{
			// 关闭所有连接
			pThis->CloseAllConnections();
			::Sleep(0);		// 给I/O工作线程一个执行的机会
			// 关闭监听套节字
			::closesocket(pThis->m_sListen);
			pThis->m_sListen = INVALID_SOCKET;
			::Sleep(0);		// 给I/O工作线程一个执行的机会

			// 通知所有I/O处理线程退出
			for(int i=2; i<MAX_THREAD + 2; i++)
			{	
				::PostQueuedCompletionStatus(pThis->m_hCompletion, -1, 0, NULL);
			}

			// 等待I/O处理线程退出
			::WaitForMultipleObjects(MAX_THREAD, &hWaitEvents[2], TRUE, 5*1000);

			for(i=2; i<MAX_THREAD + 2; i++)
			{	
				::CloseHandle(hWaitEvents[i]);
			}
		
			::CloseHandle(pThis->m_hCompletion);

			pThis->FreeBuffers();
			pThis->FreeContexts();
			::ExitThread(0);
		}	

		// 1）定时检查所有未返回的AcceptEx I/O的连接建立了多长时间
		if(nIndex == WSA_WAIT_TIMEOUT)
		{
			pBuffer = pThis->m_pPendingAccepts;
			while(pBuffer != NULL)
			{
				int nSeconds;
				int nLen = sizeof(nSeconds);
				// 取得连接建立的时间
				::getsockopt(pBuffer->sClient, 
					SOL_SOCKET, SO_CONNECT_TIME, (char *)&nSeconds, &nLen);	
				// 如果超过10秒钟客户还不发送初始数据，就让这个客户go away
				if(nSeconds != -1 && nSeconds >= 10)
				{   
					closesocket(pBuffer->sClient);
                    pBuffer->sClient = INVALID_SOCKET;
				}

				pBuffer = pBuffer->pNext;
			}
		}
		else
		{
			nIndex = nIndex - WAIT_OBJECT_0;
			WSANETWORKEVENTS ne;
            int nLimit=0;
			if(nIndex == 0)			// 2）m_hAcceptEvent事件对象受信，说明投递的Accept请求不够，需要增加
			{
				::WSAEnumNetworkEvents(pThis->m_sListen, hWaitEvents[nIndex], &ne);
				if(ne.lNetworkEvents & FD_ACCEPT)
				{
					nLimit = 50;  // 增加的个数，这里设为50个
				}
			}
			else if(nIndex == 1)	// 3）m_hRepostEvent事件对象受信，说明处理I/O的线程接受到新的客户
			{
				nLimit = InterlockedExchange(&pThis->m_nRepostCount, 0);
			}
			else if(nIndex > 1)		// I/O服务线程退出，说明有错误发生，关闭服务器
			{
				pThis->m_bShutDown = TRUE;
				continue;
			}

			// 投递nLimit个AcceptEx I/O请求
			int i = 0;
			while(i++ < nLimit && pThis->m_nPendingAcceptCount < pThis->m_nMaxAccepts)
			{
				pBuffer = pThis->AllocateBuffer(BUFFER_SIZE);
				if(pBuffer != NULL)
				{
					pThis->InsertPendingAccept(pBuffer);
					pThis->PostAccept(pBuffer);
				}
			}
		}
	}
	return 0;
}

NTSTATUS
NTAPI
CmBattGetBatteryStatus(IN PCMBATT_DEVICE_EXTENSION DeviceExtension,
                       IN ULONG Tag)
{
    ULONG PsrData = 0;
    NTSTATUS Status;
    ULONG BstState;
    ULONG DesignVoltage, PresentRate, RemainingCapacity;
    PAGED_CODE();
    if (CmBattDebug & CMBATT_GENERIC_INFO)
        DbgPrint("CmBattGetBatteryStatus - CmBatt (%08x) Tag (%d)\n", DeviceExtension, Tag);
    
    /* Validate ACPI data */    
    Status = CmBattVerifyStaticInfo(DeviceExtension, Tag);
    if (!NT_SUCCESS(Status)) return Status;

    /* Check for delayed status notifications */
    if (DeviceExtension->DelayNotification)
    {
        /* Process them now and don't do any other work */
        CmBattNotifyHandler(DeviceExtension, ACPI_BATT_NOTIFY_STATUS);
        return Status;
    }

    /* Get _BST from ACPI */
    Status = CmBattGetBstData(DeviceExtension, &DeviceExtension->BstData);
    if (!NT_SUCCESS(Status))
    {
        /* Fail */
        InterlockedExchange(&DeviceExtension->ArLockValue, 0);
        return Status;
    }
    
    /* Clear current BST information */ 
    DeviceExtension->State = 0;
    DeviceExtension->RemainingCapacity = 0;
    DeviceExtension->PresentVoltage = 0;
    DeviceExtension->Rate = 0;

    /* Get battery state */
    BstState = DeviceExtension->BstData.State;
    
    /* Is the battery both charging and discharging? */
    if ((BstState & ACPI_BATT_STAT_DISCHARG) && (BstState & ACPI_BATT_STAT_CHARGING) &&
        (CmBattDebug & (CMBATT_ACPI_WARNING | CMBATT_GENERIC_WARNING)))
            DbgPrint("************************ ACPI BIOS BUG ********************\n* "
                     "CmBattGetBatteryStatus: Invalid state: _BST method returned 0x%08x for Battery State.\n"
                     "* One battery cannot be charging and discharging at the same time.\n",
                     BstState);
    
    /* Is the battery discharging? */   
    if (BstState & ACPI_BATT_STAT_DISCHARG)
    {
        /* Set power state and check if it just started discharging now */
        DeviceExtension->State |= BATTERY_DISCHARGING;
        if (!(DeviceExtension->State & ACPI_BATT_STAT_DISCHARG))
        {
            /* Remember the time when the state changed */
            DeviceExtension->InterruptTime = KeQueryInterruptTime();
        }
    }
    else if (BstState & ACPI_BATT_STAT_CHARGING)
    {
        /* Battery is charging, update power state */
        DeviceExtension->State |= (BATTERY_CHARGING | BATTERY_POWER_ON_LINE);
    }
    
    /* Is the battery in a critical state? */
    if (BstState & ACPI_BATT_STAT_CRITICAL) DeviceExtension->State |= BATTERY_CRITICAL;
    
    /* Read the voltage data */  
    DeviceExtension->PresentVoltage = DeviceExtension->BstData.PresentVoltage;
    
    /* Check if we have an A/C adapter */
    if (AcAdapterPdo)
    {
        /* Query information on it */
        CmBattGetPsrData(AcAdapterPdo, &PsrData);
    }
    else
    {
        /* Otherwise, check if the battery is charging */
        if (BstState & ACPI_BATT_STAT_CHARGING)
        {
            /* Then we'll assume there's a charger */
            PsrData = 1;
        }
        else
        {
            /* Assume no charger */
            PsrData = 0;        
        }
    }
    
    /* Is there a charger? */
    if (PsrData)
    {
        /* Set the power state flag to reflect this */
        DeviceExtension->State |= BATTERY_POWER_ON_LINE;
//.........这里部分代码省略.........

//.........这里部分代码省略.........
		SourceType.Format.nChannels = 2;
		SourceType.dwChannelMask = STEREO;
		break;
	case DevFmtQuad:
		SourceType.Format.nChannels = 4;
		SourceType.dwChannelMask = QUAD;
		break;
	case DevFmtX51:
		SourceType.Format.nChannels = 6;
		SourceType.dwChannelMask = X5DOT1;
		break;
	case DevFmtX51Side:
		SourceType.Format.nChannels = 6;
		SourceType.dwChannelMask = X5DOT1SIDE;
		break;
	case DevFmtX61:
		SourceType.Format.nChannels = 7;
		SourceType.dwChannelMask = X6DOT1;
		break;
	case DevFmtX71:
		SourceType.Format.nChannels = 8;
		SourceType.dwChannelMask = X7DOT1;
		break;
	}
	switch (device->FmtType)
	{
	case DevFmtByte:
		device->FmtType = DevFmtUByte;
		/* fall-through */
	case DevFmtUByte:
		SourceType.Format.wBitsPerSample = 8;
		SourceType.Samples.wValidBitsPerSample = 8;
		SourceType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
		break;
	case DevFmtUShort:
		device->FmtType = DevFmtShort;
		/* fall-through */
	case DevFmtShort:
		SourceType.Format.wBitsPerSample = 16;
		SourceType.Samples.wValidBitsPerSample = 16;
		SourceType.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
		break;
	case DevFmtFloat:
		SourceType.Format.wBitsPerSample = 32;
		SourceType.Samples.wValidBitsPerSample = 32;
		SourceType.SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
		break;
	}
	SourceType.Format.cbSize = (sizeof(SourceType) - sizeof(WAVEFORMATEX));
	SourceType.Format.nSamplesPerSec = device->Frequency;

	SourceType.Format.nBlockAlign = SourceType.Format.nChannels *
		SourceType.Format.wBitsPerSample / 8;
	SourceType.Format.nAvgBytesPerSec = SourceType.Format.nSamplesPerSec *
		SourceType.Format.nBlockAlign;

	SourceType.Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;

	/*-----------create source voice-------------*/
	data->sourceVoiceCallback = new (std::nothrow) XAudio2SourceVoiceCallback(device);
	if (data->sourceVoiceCallback == NULL)
	{
		ERR("create XAudio2SourceVoiceCallback() failed\n");
		return ALC_FALSE;
	}

	data->sourceVoiceCallback->callbackEvent = CreateEventEx(NULL, NULL, 0, EVENT_ACCESS_MASK);
	if (data->sourceVoiceCallback->callbackEvent == NULL)
	{
		ERR("create callback event failed\n");
		return ALC_FALSE;
	}

	hr = data->xAudioObj->CreateSourceVoice(&data->sourceVoice, &SourceType.Format, 0,
		XAUDIO2_DEFAULT_FREQ_RATIO, data->sourceVoiceCallback);
	if (FAILED(hr))
	{
		ERR("CreateSourceVoice() failed: 0x%08lx\n", hr);
		return ALC_FALSE;
	}

	/*---------create buffer--------------*/
	//calculate frame size
	data->frameSize = FrameSizeFromDevFmt(device->FmtChans, device->FmtType);

	//start playing the audio engine
	data->sourceVoice->Start();

	//wait for the buffer to be created
	WaitForSingleObjectEx(data->sourceVoiceCallback->callbackEvent, INFINITE, FALSE);

	device->UpdateSize = data->bufferSize / data->frameSize;
	device->NumUpdates = 1;


	//set the running flag
	InterlockedExchange(&data->running, TRUE);

	return ALC_TRUE;
}

VOID
NTAPI
CmBattWakeDpc(IN PKDPC Dpc,
              IN PCMBATT_DEVICE_EXTENSION FdoExtension,
              IN PVOID SystemArgument1,
              IN PVOID SystemArgument2)
{
    PDEVICE_OBJECT CurrentObject;
    BOOLEAN AcNotify = FALSE;
    PCMBATT_DEVICE_EXTENSION DeviceExtension;
    ULONG ArFlag;
    if (CmBattDebug & 2) DbgPrint("CmBattWakeDpc: Entered.\n");
    
    /* Loop all device objects */
    for (CurrentObject = FdoExtension->DeviceObject;
         CurrentObject;
         CurrentObject = CurrentObject->NextDevice)
    {
        /* Turn delay flag off, we're back in S0 */
        DeviceExtension = CurrentObject->DeviceExtension;
        DeviceExtension->DelayNotification = 0;
        
        /* Check if this is an AC adapter */
        if (DeviceExtension->FdoType == CmBattAcAdapter)
        {
            /* Was there a pending notify? */
            if (DeviceExtension->ArFlag & CMBATT_AR_NOTIFY)
            {
                /* We'll send a notify on the next pass */
                AcNotify = TRUE;
                DeviceExtension->ArFlag = 0;
                if (CmBattDebug & 0x20)
                    DbgPrint("CmBattWakeDpc: AC adapter notified\n");
            }
        }
    }

    /* Loop the device objects again */
    for (CurrentObject = FdoExtension->DeviceObject;
         CurrentObject;
         CurrentObject = CurrentObject->NextDevice)
    {
        /* Check if this is a battery */
        DeviceExtension = CurrentObject->DeviceExtension;
        if (DeviceExtension->FdoType == CmBattBattery)
        {
            /* Check what ARs are pending */
            ArFlag = DeviceExtension->ArFlag;
            if (CmBattDebug & 0x20)
                DbgPrint("CmBattWakeDpc: Performing delayed ARs: %01x\n", ArFlag);

            /* Insert notification, clear the lock value */
            if (ArFlag & CMBATT_AR_INSERT) InterlockedExchange(&DeviceExtension->ArLockValue, 0);

            /* Removal, clear the battery tag */
            if (ArFlag & CMBATT_AR_REMOVE) DeviceExtension->Tag = 0;

            /* Notification (or AC/DC adapter change from first pass above) */
            if ((ArFlag & CMBATT_AR_NOTIFY) || (AcNotify))
            {
                /* Notify the class driver */
                BatteryClassStatusNotify(DeviceExtension->ClassData);
            }
        }
    }
}

VOID
NTAPI
CmBattNotifyHandler(IN PCMBATT_DEVICE_EXTENSION DeviceExtension,
                    IN ULONG NotifyValue)
{
    ULONG ArFlag;
    PCMBATT_DEVICE_EXTENSION FdoExtension;
    PDEVICE_OBJECT DeviceObject;
    
    if (CmBattDebug & (CMBATT_ACPI_ASSERT | CMBATT_PNP_INFO))
        DbgPrint("CmBattNotifyHandler: CmBatt 0x%08x Type %d Number %d Notify Value: %x\n",
                 DeviceExtension,
                 DeviceExtension->FdoType,
                 DeviceExtension->DeviceId,
                 NotifyValue);
    
    /* Check what kind of notification was received */
    switch (NotifyValue)
    {
        /* ACPI Specification says is sends a "Bus Check" when power source changes */
        case ACPI_BUS_CHECK:
        
            /* We treat it as possible physical change */
            DeviceExtension->ArFlag |= (CMBATT_AR_NOTIFY | CMBATT_AR_INSERT);
            if ((DeviceExtension->Tag) &&
                (CmBattDebug & (CMBATT_ACPI_WARNING | CMBATT_GENERIC_WARNING)))
                DbgPrint("CmBattNotifyHandler: Received battery #%x insertion, but tag was not invalid.\n",
                         DeviceExtension->DeviceId);
            break;
        
        /* Status of the battery has changed */
        case ACPI_BATT_NOTIFY_STATUS:
        
            /* All we'll do is notify the class driver */
            DeviceExtension->ArFlag |= CMBATT_AR_NOTIFY;
            break;
        
        /* Information on the battery has changed, such as physical presence */
        case ACPI_DEVICE_CHECK:
        case ACPI_BATT_NOTIFY_INFO:
        
            /* Reset all state and let the class driver re-evaluate it all */
            DeviceExtension->ArFlag |= (CMBATT_AR_NOTIFY |
                                        CMBATT_AR_INSERT |
                                        CMBATT_AR_REMOVE);
            break;
            
        default:
        
            if (CmBattDebug & CMBATT_PNP_INFO)
                DbgPrint("CmBattNotifyHandler: Unknown Notify Value: %x\n", NotifyValue);
    }

    /* Check if we're supposed to delay the notification till later */
    if (DeviceExtension->DelayNotification)
    {
        /* We'll handle this when we get a status query later on */
        if (CmBattDebug & CMBATT_PNP_INFO)
            DbgPrint("CmBattNotifyHandler: Notification delayed: ARs = %01x\n",
                      DeviceExtension->ArFlag);
        return;
    }

    /* We're going to handle this now */
    if (CmBattDebug & CMBATT_PNP_INFO) 
        DbgPrint("CmBattNotifyHandler: Performing ARs: %01x\n", DeviceExtension->ArFlag);

    /* Check if this is a battery or AC adapter notification */
    if (DeviceExtension->FdoType == CmBattBattery)
    {
        /* Reset the current trip point */
        DeviceExtension->TripPointValue = BATTERY_UNKNOWN_CAPACITY;
        
        /* Check what ARs have to be done */
        ArFlag = DeviceExtension->ArFlag;
        
        /* New battery inserted, reset lock value */
        if (ArFlag & CMBATT_AR_INSERT) InterlockedExchange(&DeviceExtension->ArLockValue, 0);

        /* Check if the battery may have been removed */
        if (ArFlag & CMBATT_AR_REMOVE) DeviceExtension->Tag = 0;
        
        /* Check if there's been any sort of change to the battery */
        if (ArFlag & CMBATT_AR_NOTIFY)
        {
            /* We'll probably end up re-evaluating _BIF and _BST */
            DeviceExtension->NotifySent = TRUE;
            BatteryClassStatusNotify(DeviceExtension->ClassData);
        }
    }
    else if (DeviceExtension->ArFlag & CMBATT_AR_NOTIFY)
    {
        /* The only known notification is AC/DC change. Loop device objects. */
        for (DeviceObject = DeviceExtension->FdoDeviceObject->DriverObject->DeviceObject;
             DeviceObject;
             DeviceObject = DeviceObject->NextDevice)
        {
            /* Is this a battery? */
            FdoExtension = DeviceObject->DeviceExtension;
            if (FdoExtension->FdoType == CmBattBattery)
//.........这里部分代码省略.........

//.........这里部分代码省略.........
        // Use the most recent server for the connection attempt
        serverIndex = dbIndex;
        server      = &dbConfigServers[serverIndex];

        TRACE("Connecting to server #%d [%s] on attempt %lu/%lu.",
            serverIndex, server->name, attempt+1, attemptMax);

        // Set connection options
        optTimeout = (UINT)dbConfigGlobal.connTimeout;
        if (mysql_options(db->handle, MYSQL_OPT_CONNECT_TIMEOUT, &optTimeout) != 0) {
            TRACE("Failed to set connection timeout option.");
        }

        optReconnect = FALSE;
        if (mysql_options(db->handle, MYSQL_OPT_RECONNECT, &optReconnect) != 0) {
            TRACE("Failed to set reconnection option.");
        }

        if (server->compression) {
            if (mysql_options(db->handle, MYSQL_OPT_COMPRESS, 0) != 0) {
                TRACE("Failed to set compression option.");
            }
        }

        if (server->sslEnable) {
            //
            // This function always returns 0. If the SSL setup is incorrect,
            // the call to mysql_real_connect() will return an error.
            //
            mysql_ssl_set(db->handle, server->sslKeyFile, server->sslCertFile,
                server->sslCAFile, server->sslCAPath, server->sslCiphers);
        }

        // Attempt connection with server
        connection = mysql_real_connect(db->handle,
            server->host, server->user, server->password,
            server->database, server->port, NULL, CLIENT_INTERACTIVE);

        if (connection == NULL) {
            LOG_ERROR("Unable to connect to server [%s]: %s",
                server->name, mysql_error(db->handle));

        } else if (mysql_get_server_version(db->handle) < 50019) {
            LOG_ERROR("Unsupported version of MySQL Server [%s]: running v%s, must be v5.0.19 or newer.",
                server->name, mysql_get_server_info(db->handle));

        } else {
            // Pointer values should be the same as from mysql_init()
            ASSERT(connection == db->handle);

            // Allocate pre-compiled statement structures
            for (i = 0; i < ELEMENT_COUNT(db->stmt); i++) {
                db->stmt[i] = mysql_stmt_init(db->handle);
                if (db->stmt[i] == NULL) {
                    LOG_ERROR("Unable to allocate memory for statement structure.");

                    error = ERROR_NOT_ENOUGH_MEMORY;
                    goto failed;
                }
            }

            // Successfully connected, set the global server index
            InterlockedExchange(&dbIndex, serverIndex);

            // Update context's server index and time stamps
            db->index = serverIndex;
            GetSystemTimeAsFileTime(&db->created.fileTime);
            db->used.value = db->created.value;

            LOG_INFO("Connected to %s [%s], running MySQL Server v%s.",
                mysql_get_host_info(db->handle), server->name,
                mysql_get_server_info(db->handle));

            *data = db;
            return TRUE;
        }

        // Unsuccessful connection, continue to the next server
        serverNextIndex = serverIndex + 1;
        if (serverNextIndex >= (LONG)dbConfigServerCount) {
            serverNextIndex = 0;
        }

        //
        // Compare the current server index before swapping values in the
        // event that another thread has already changed the index.
        //
        InterlockedCompareExchange(&dbIndex, serverNextIndex, serverIndex);
    }

    // Unable to connect to any servers
    error = ERROR_CONNECTION_REFUSED;

failed:
    if (db != NULL) {
        ConnectionClose(NULL, db);
    }
    SetLastError(error);
    return FALSE;
}

int GitRev::SafeFetchFullInfo(CGit *git)
{
	if(InterlockedExchange(&m_IsUpdateing,TRUE) == FALSE)
	{
		this->m_Files.Clear();
		git->CheckAndInitDll();
		GIT_COMMIT commit;
		GIT_COMMIT_LIST list;
		GIT_HASH   parent;
		memset(&commit,0,sizeof(GIT_COMMIT));

		CAutoLocker lock(g_Git.m_critGitDllSec);

		try
		{
			if (git_get_commit_from_hash(&commit, this->m_CommitHash.m_hash))
				return -1;
		}
		catch (char *)
		{
			return -1;
		}

		int i=0;

		git_get_commit_first_parent(&commit,&list);
		bool isRoot = (list==NULL);

		while(git_get_commit_next_parent(&list,parent) == 0 || isRoot)
		{
			GIT_FILE file=0;
			int count=0;

			try
			{
				if (isRoot)
					git_root_diff(git->GetGitDiff(), this->m_CommitHash.m_hash, &file, &count, 1);
				else
					git_diff(git->GetGitDiff(), parent, commit.m_hash, &file, &count, 1);
			}
			catch (char *)
			{
				git_free_commit(&commit);
				return -1;
			}
			isRoot = false;

			CTGitPath path;
			CString strnewname;
			CString stroldname;

			for (int j = 0; j < count; ++j)
			{
				path.Reset();
				char *newname;
				char *oldname;

				strnewname.Empty();
				stroldname.Empty();

				int mode,IsBin,inc,dec;
				git_get_diff_file(git->GetGitDiff(),file,j,&newname,&oldname,
						&mode,&IsBin,&inc,&dec);

				git->StringAppend(&strnewname, (BYTE*)newname, CP_UTF8);
				git->StringAppend(&stroldname, (BYTE*)oldname, CP_UTF8);

				path.SetFromGit(strnewname,&stroldname);
				path.ParserAction((BYTE)mode);
				path.m_ParentNo = i;

				this->m_Action|=path.m_Action;

				if(IsBin)
				{
					path.m_StatAdd=_T("-");
					path.m_StatDel=_T("-");
				}
				else
				{
					path.m_StatAdd.Format(_T("%d"),inc);
					path.m_StatDel.Format(_T("%d"),dec);
				}
				m_Files.AddPath(path);
			}
			git_diff_flush(git->GetGitDiff());
			++i;
		}


		InterlockedExchange(&m_IsUpdateing,FALSE);
		InterlockedExchange(&m_IsFull,TRUE);
		git_free_commit(&commit);
	}

	return 0;
}

// In newer compilers, the inline versions of these are used (in juce_Atomic.h), but in
// older ones we have to actually call the ops as win32 functions..
long juce_InterlockedExchange (volatile long* a, long b) noexcept                { return InterlockedExchange (a, b); }