C++ xAreRecursiveMutexTasksStillRunning函数代码示例

static void prvCheckTask( void *pvParameters )
{
portTickType xNextWakeTime;
const portTickType xCycleFrequency = 5000 / portTICK_RATE_MS;
char *pcStatusMessage = "OK";

	/* Just to remove compiler warning. */
	( void ) pvParameters;

	/* Initialise xNextWakeTime - this only needs to be done once. */
	xNextWakeTime = xTaskGetTickCount();

	for( ;; )
	{
		/* Place this task in the blocked state until it is time to run again. */
		vTaskDelayUntil( &xNextWakeTime, xCycleFrequency );

		/* Check the standard demo tasks are running without error. */
	    if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: IntMath";
	    }	
		else if( xAreGenericQueueTasksStillRunning() != pdTRUE )
		{			
			pcStatusMessage = "Error: GenQueue";
		}
		else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: QueuePeek";
		}
		else if( xAreBlockingQueuesStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: BlockQueue";
		}
	    else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: SemTest";
	    }
	    else if( xArePollingQueuesStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: PollQueue";
	    }
		else if( xAreMathsTaskStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Flop";
		}
	    else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: RecMutex";
		}

		/* This is the only task that uses stdout so its ok to call printf() 
		directly. */
		printf( "%s - %d\r\n", pcStatusMessage, ( int ) xTaskGetTickCount() );
		fflush( stdout ); /* Required by Eclipse console. */
	}
}

/* See the description at the top of this file. */
static void prvCheckTimerCallback( TimerHandle_t xTimer )
{
    static long lChangedTimerPeriodAlready = pdFALSE;
    static unsigned long ulLastRegTest1Value = 0, ulLastRegTest2Value = 0;
    unsigned long ulErrorFound = pdFALSE;

    /* Check all the demo and test tasks to ensure that they are all still
    running, and that none have detected an error. */
    if( xAreDynamicPriorityTasksStillRunning() != pdPASS ) {
        ulErrorFound |= ( 0x01UL << 0UL );
    }

    if( xAreBlockTimeTestTasksStillRunning() != pdPASS ) {
        ulErrorFound |= ( 0x01UL << 1UL );
    }

    if( xAreCountingSemaphoreTasksStillRunning() != pdPASS ) {
        ulErrorFound |= ( 0x01UL << 2UL );
    }

    if( xAreRecursiveMutexTasksStillRunning() != pdPASS ) {
        ulErrorFound |= ( 0x01UL << 3UL );
    }

    /* Check that the register test 1 task is still running. */
    if( ulLastRegTest1Value == ulRegTest1LoopCounter ) {
        ulErrorFound |= ( 0x01UL << 4UL );
    }
    ulLastRegTest1Value = ulRegTest1LoopCounter;

    /* Check that the register test 2 task is still running. */
    if( ulLastRegTest2Value == ulRegTest2LoopCounter ) {
        ulErrorFound |= ( 0x01UL << 5UL );
    }
    ulLastRegTest2Value = ulRegTest2LoopCounter;

    /* Toggle the check LED to give an indication of the system status.  If
    the LED toggles every mainCHECK_TIMER_PERIOD_MS milliseconds then
    everything is ok.  A faster toggle indicates an error. */
    vParTestToggleLED( mainCHECK_LED );

    /* Have any errors been latched in ulErrorFound?  If so, shorten the
    period of the check timer to mainERROR_CHECK_TIMER_PERIOD_MS milliseconds.
    This will result in an increase in the rate at which mainCHECK_LED
    toggles. */
    if( ulErrorFound != pdFALSE ) {
        if( lChangedTimerPeriodAlready == pdFALSE ) {
            lChangedTimerPeriodAlready = pdTRUE;

            /* This call to xTimerChangePeriod() uses a zero block time.
            Functions called from inside of a timer callback function must
            *never* attempt	to block. */
            xTimerChangePeriod( xTimer, ( mainERROR_CHECK_TIMER_PERIOD_MS ), mainDONT_BLOCK );
        }
    }
}

void vApplicationTickHook( void )
{
static xLCDMessage xMessage = { "PASS" };
static unsigned long ulTicksSinceLastDisplay = 0;
portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;

	/* Called from every tick interrupt.  Have enough ticks passed to make it
	time to perform our health status check again? */
	ulTicksSinceLastDisplay++;
	if( ulTicksSinceLastDisplay >= mainCHECK_DELAY )
	{
		ulTicksSinceLastDisplay = 0;

		/* Has an error been found in any task? */
		if( xAreGenericQueueTasksStillRunning() != pdTRUE )
		{
			xMessage.pcMessage = "ERROR IN GEN Q";
		}
	    if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
	    {
	        xMessage.pcMessage = "ERROR IN MATH";
	    }
		else if( xAreBlockingQueuesStillRunning() != pdTRUE )
		{
			xMessage.pcMessage = "ERROR IN BLOCK Q";
		}
		else if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
		{
			xMessage.pcMessage = "ERROR IN BLOCK TIME";
		}
		else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
		{
			xMessage.pcMessage = "ERROR IN SEMAPHORE";
		}
		else if( xArePollingQueuesStillRunning() != pdTRUE )
		{
			xMessage.pcMessage = "ERROR IN POLL Q";
		}
		else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
		{
			xMessage.pcMessage = "ERROR IN PEEK Q";
		}
		else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
		{
			xMessage.pcMessage = "ERROR IN REC MUTEX";
		}
		else if( xAreComTestTasksStillRunning() != pdTRUE )
		{
			xMessage.pcMessage = "ERROR IN COMTEST";
		}

		/* Send the message to the LCD gatekeeper for display. */
		xHigherPriorityTaskWoken = pdFALSE;
		xQueueSendFromISR( xLCDQueue, &xMessage, &xHigherPriorityTaskWoken );
	}
}

static void prvCheckTask( void *pvParameters )
{
portTickType xLastExecutionTime, xFrequency = mainNO_ERROR_CHECK_FREQUENCY;
long lCount;

	/* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()
	works correctly. */
	xLastExecutionTime = xTaskGetTickCount();

	for( ;; )
	{
		/* Perform this check at a frequency that indicates whether or not an
		error has been found. */
		vTaskDelayUntil( &xLastExecutionTime, xFrequency );
		
		/* Check all the other tasks are running without error. */
		if( xAreGenericQueueTasksStillRunning() != pdPASS )
		{
			xFrequency = mainERROR_CHECK_FREQUENCY;
		}
		
		if( xAreQueuePeekTasksStillRunning() != pdPASS )
		{
			xFrequency = mainERROR_CHECK_FREQUENCY;
		}
		
		if( xAreRecursiveMutexTasksStillRunning() != pdPASS )
		{
			xFrequency = mainERROR_CHECK_FREQUENCY;
		}

		if( xAreSemaphoreTasksStillRunning() != pdPASS )
		{
			xFrequency = mainERROR_CHECK_FREQUENCY;
		}
		
		/* Toggle the LED to show that the check hook function is running.
		The toggle freequency will increase if an error has been found in any
		task. */
		vParTestToggleLED( mainCHECK_LED );
		
		/* Just loop around putting the processor into low power mode 1 for
		a while.  This is the highest priority task, and this loop does not
		cause it to block, so it will remain as the running task.  Each time it
		runs for the next two seconds it will simply put the processor to sleep.
		No other task will run so nothing else will happen.  This periodic two
		seconds of lower power should be viewable using the Advanced Energy
		Monitor on the Energy Micro Gecko board. */
		for( lCount = 0; lCount < mainTWO_SECONDS; lCount++ )
		{
			prvLowPowerMode1();
		}
	}
}

void vApplicationTickHook( void )
{
    static xOLEDMessage xMessage = { "PASS" };
    static unsigned long ulTicksSinceLastDisplay = 0;
    portBASE_TYPE xHigherPriorityTaskWoken = pdFALSE;

    /* Called from every tick interrupt.  Have enough ticks passed to make it
    time to perform our health status check again? */
    ulTicksSinceLastDisplay++;
    if( ulTicksSinceLastDisplay >= mainCHECK_DELAY ) {
        ulTicksSinceLastDisplay = 0;

        /* Has an error been found in any task? */
        if( xAreGenericQueueTasksStillRunning() != pdTRUE ) {
            xMessage.pcMessage = "ERROR IN GEN Q";
        } else if( xIsCreateTaskStillRunning() != pdTRUE ) {
            xMessage.pcMessage = "ERROR IN CREATE";
        } else if( xAreIntegerMathsTaskStillRunning() != pdTRUE ) {
            xMessage.pcMessage = "ERROR IN MATH";
        } else if( xAreIntQueueTasksStillRunning() != pdTRUE ) {
            xMessage.pcMessage = "ERROR IN INT QUEUE";
        } else if( xAreBlockingQueuesStillRunning() != pdTRUE ) {
            xMessage.pcMessage = "ERROR IN BLOCK Q";
        } else if( xAreBlockTimeTestTasksStillRunning() != pdTRUE ) {
            xMessage.pcMessage = "ERROR IN BLOCK TIME";
        } else if( xAreSemaphoreTasksStillRunning() != pdTRUE ) {
            xMessage.pcMessage = "ERROR IN SEMAPHORE";
        } else if( xArePollingQueuesStillRunning() != pdTRUE ) {
            xMessage.pcMessage = "ERROR IN POLL Q";
        } else if( xAreQueuePeekTasksStillRunning() != pdTRUE ) {
            xMessage.pcMessage = "ERROR IN PEEK Q";
        } else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE ) {
            xMessage.pcMessage = "ERROR IN REC MUTEX";
        } else if( xAreQueueSetTasksStillRunning() != pdPASS ) {
            xMessage.pcMessage = "ERROR IN Q SET";
        } else if( xAreEventGroupTasksStillRunning() != pdTRUE ) {
            xMessage.pcMessage = "ERROR IN EVNT GRP";
        }

        configASSERT( strcmp( ( const char * ) xMessage.pcMessage, "PASS" ) == 0 );

        /* Send the message to the OLED gatekeeper for display. */
        xHigherPriorityTaskWoken = pdFALSE;
        xQueueSendFromISR( xOLEDQueue, &xMessage, &xHigherPriorityTaskWoken );
    }

    /* Write to a queue that is in use as part of the queue set demo to
    demonstrate using queue sets from an ISR. */
    vQueueSetAccessQueueSetFromISR();

    /* Call the event group ISR tests. */
    vPeriodicEventGroupsProcessing();
}

/* Described at the top of this file. */
static void prvCheckTask( void *pvParameters )
{
portTickType xLastExecutionTime;
unsigned long ulTicksToWait = mainCHECK_DELAY_NO_ERROR;

	/* Just to remove the compiler warning about the unused parameter. */
	( void ) pvParameters;

	/* Initialise the variable used to control our iteration rate prior to
	its first use. */
	xLastExecutionTime = xTaskGetTickCount();

	for( ;; )
	{
		/* Wait until it is time to run the tests again. */
		vTaskDelayUntil( &xLastExecutionTime, ulTicksToWait );

		/* Has an error been found in any task? */
		if( xAreGenericQueueTasksStillRunning() != pdTRUE )
		{
			/* Reduce the time between cycles of this task - which has the
			effect of increasing the rate at which the 'check' LED toggles to
			indicate the existence of an error to an observer. */
			ulTicksToWait = mainCHECK_DELAY_ERROR;
		}
		else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
		{
			ulTicksToWait = mainCHECK_DELAY_ERROR;
		}
		else if( xAreBlockingQueuesStillRunning() != pdTRUE )
		{
			ulTicksToWait = mainCHECK_DELAY_ERROR;
		}
	    else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	    {
	        ulTicksToWait = mainCHECK_DELAY_ERROR;
	    }
	    else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
	    {
	        ulTicksToWait = mainCHECK_DELAY_ERROR;
	    }
	    else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	    {
	    	ulTicksToWait = mainCHECK_DELAY_ERROR;
	    }

		vParTestToggleLED( mainCHECK_LED );
	}
}

static void prvCheckTimerCallback( TimerHandle_t xTimer )
{
	/* Check the standard demo tasks are running without error.   Latch the
	latest reported error in the pcStatusMessage character pointer. */
	if( xAreGenericQueueTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: GenQueue";
	}

	if( xAreQueuePeekTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: QueuePeek\r\n";
	}

	if( xAreBlockingQueuesStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: BlockQueue\r\n";
	}

	if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: BlockTime\r\n";
	}

	if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: SemTest\r\n";
	}

	if( xIsCreateTaskStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: Death\r\n";
	}

	if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	{
		pcStatusMessage = "Error: RecMutex\r\n";
	}

	if( xAreTimerDemoTasksStillRunning( ( mainCHECK_TIMER_PERIOD_MS ) ) != pdTRUE )
	{
		pcStatusMessage = "Error: TimerDemo";
	}

	/* Toggle the check LED to give an indication of the system status.  If
	the LED toggles every mainCHECK_TIMER_PERIOD_MS milliseconds then
	everything is ok.  A faster toggle indicates an error. */
	vParTestToggleLED( mainCHECK_LED );

	/* Have any errors been latch in pcStatusMessage?  If so, shorten the
	period of the check timer to mainERROR_CHECK_TIMER_PERIOD_MS milliseconds.
	This will result in an increase in the rate at which mainCHECK_LED
	toggles. */
	if( pcStatusMessage != NULL )
	{
		/* This call to xTimerChangePeriod() uses a zero block time.  Functions
		called from inside of a timer callback function must *never* attempt
		to block. */
		xTimerChangePeriod( xCheckTimer, ( mainERROR_CHECK_TIMER_PERIOD_MS ), mainDONT_BLOCK );
	}
}

static void vCheckTask( void *pvParameters )
{
portBASE_TYPE xErrorOccurred = pdFALSE;
TickType_t xLastExecutionTime;
const char * const pcPassMessage = "PASS\n";
const char * const pcFailMessage = "FAIL\n";

	/* Just to remove compiler warnings. */
	( void ) pvParameters;

	/* Initialise xLastExecutionTime so the first call to vTaskDelayUntil()
	works correctly. */
	xLastExecutionTime = xTaskGetTickCount();

	for( ;; )
	{
		/* Perform this check every mainCHECK_DELAY milliseconds. */
		vTaskDelayUntil( &xLastExecutionTime, mainCHECK_DELAY );

		/* Has an error been found in any task? */

		if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
		{
			xErrorOccurred = pdTRUE;
		}

		if( xArePollingQueuesStillRunning() != pdTRUE )
		{
			xErrorOccurred = pdTRUE;
		}

		if( xAreSemaphoreTasksStillRunning() != pdTRUE )
		{
			xErrorOccurred = pdTRUE;
		}

		if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
		{
			xErrorOccurred = pdTRUE;
		}

		if( xAreBlockingQueuesStillRunning() != pdTRUE )
		{
			xErrorOccurred = pdTRUE;
		}

		#if configUSE_PREEMPTION == 1
		{
			/* The timing of console output when not using the preemptive
			scheduler causes the block time tests to detect a timing problem. */
			if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
			{
				xErrorOccurred = pdTRUE;
			}
		}
		#endif

		if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
		{
			xErrorOccurred = pdTRUE;
		}

		/* Send either a pass or fail message.  If an error is found it is
		never cleared again. */
		if( xErrorOccurred == pdTRUE )
		{
			xLED_Delay = mainERROR_LED_DELAY;
			xQueueSend( xPrintQueue, &pcFailMessage, portMAX_DELAY );
		}
		else
		{
			xQueueSend( xPrintQueue, &pcPassMessage, portMAX_DELAY );
		}
	}
}

static void prvCheckTimerCallback( xTimerHandle xTimer )
{
static long lChangeToRedLEDsAlready = pdFALSE;
static unsigned long ulLastRegTest1Counter = 0, ulLastRegTest2Counter = 0;
unsigned long ulErrorFound = pdFALSE;
/* LEDs are defaulted to use the Green LEDs.  The Red LEDs are used if an error
is found. */
static unsigned long ulLED1 = 8, ulLED2 = 11;
const unsigned long ulRedLED1 = 6, ulRedLED2 = 9;

	/* Check all the demo tasks (other than the flash tasks) to ensure
	they are all still running, and that none have detected an error. */

	if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
	{
		ulErrorFound = pdTRUE;
	}

	if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
	{
		ulErrorFound = pdTRUE;
	}

	if( xAreBlockingQueuesStillRunning() != pdTRUE )
	{
		ulErrorFound = pdTRUE;
	}

	if ( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
	{
		ulErrorFound = pdTRUE;
	}

	if ( xAreGenericQueueTasksStillRunning() != pdTRUE )
	{
		ulErrorFound = pdTRUE;
	}

	if ( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	{
		ulErrorFound = pdTRUE;
	}

	if( xIsCreateTaskStillRunning() != pdTRUE )
	{
		ulErrorFound = pdTRUE;
	}

	if( xArePollingQueuesStillRunning() != pdTRUE )
	{
		ulErrorFound = pdTRUE;
	}

	if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	{
		ulErrorFound = pdTRUE;
	}

	if( xAreMathsTaskStillRunning() != pdTRUE )
	{
		ulErrorFound = pdTRUE;
	}

	if( xAreComTestTasksStillRunning() != pdTRUE )
	{
		ulErrorFound = pdTRUE;
	}

	/* Check the reg test tasks are still cycling.  They will stop
	incrementing their loop counters if they encounter an error. */
	if( ulRegTest1Counter == ulLastRegTest1Counter )
	{
		ulErrorFound = pdTRUE;
	}

	if( ulRegTest2Counter == ulLastRegTest2Counter )
	{
		ulErrorFound = pdTRUE;
	}

	ulLastRegTest1Counter = ulRegTest1Counter;
	ulLastRegTest2Counter = ulRegTest2Counter;

	/* Toggle the check LEDs to give an indication of the system status.  If
	the green LEDs are toggling, then no errors have been detected.  If the red
	LEDs are toggling, then an error has been reported in at least one task. */
	vParTestToggleLED( ulLED1 );
	vParTestToggleLED( ulLED2 );
	
	/* Have any errors been latch in ulErrorFound?  If so, ensure the gree LEDs
	are off, then switch to using the red LEDs. */
	if( ulErrorFound != pdFALSE )
	{
		if( lChangeToRedLEDsAlready == pdFALSE )
		{
			lChangeToRedLEDsAlready = pdTRUE;
			
			/* An error has been found.  Switch to use the red LEDs. */
			vParTestSetLED( ulLED1, pdFALSE );
			vParTestSetLED( ulLED2, pdFALSE );
//.........这里部分代码省略.........

static void prvCheckTask( void *pvParameter )
{
    TickType_t xNextWakeTime, xCycleFrequency = mainNO_ERROR_CYCLE_TIME;
    unsigned long ulLastRegTest1CycleCount = 0UL, ulLastRegTest2CycleCount = 0UL;

    /* Just to remove compiler warning. */
    ( void ) pvParameter;

    /* Initialise xNextWakeTime - this only needs to be done once. */
    xNextWakeTime = xTaskGetTickCount();

    for( ;; )
    {
        /* Place this task in the blocked state until it is time to run again. */
        vTaskDelayUntil( &xNextWakeTime, xCycleFrequency );

        /* Inspect all the other tasks to ensure none have experienced any errors. */
        if( xAreGenericQueueTasksStillRunning() != pdTRUE )
        {
            /* Increase the rate at which this task cycles, which will increase the
            rate at which mainCHECK_LED flashes to give visual feedback that an error
            has occurred. */
            xCycleFrequency = mainERROR_CYCLE_TIME;
            pcStatusMessage = "Error in GenQ test.";
        }
        else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
        {
            xCycleFrequency = mainERROR_CYCLE_TIME;
            pcStatusMessage = "Error in Queue Peek test.";
        }
        else if( xAreBlockingQueuesStillRunning() != pdTRUE )
        {
            xCycleFrequency = mainERROR_CYCLE_TIME;
            pcStatusMessage = "Error in Blocking Queue test.";
        }
        else if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
        {
            xCycleFrequency = mainERROR_CYCLE_TIME;
            pcStatusMessage = "Error in BlockTim test.";
        }
        else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
        {
            xCycleFrequency = mainERROR_CYCLE_TIME;
            pcStatusMessage = "Error in Semaphore test.";
        }
        else if( xArePollingQueuesStillRunning() != pdTRUE )
        {
            xCycleFrequency = mainERROR_CYCLE_TIME;
            pcStatusMessage = "Error in Polling Queue test.";
        }
        else if( xIsCreateTaskStillRunning() != pdTRUE )
        {
            xCycleFrequency = mainERROR_CYCLE_TIME;
            pcStatusMessage = "Error in Create test.";
        }
        else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
        {
            xCycleFrequency = mainERROR_CYCLE_TIME;
            pcStatusMessage = "Error in integer Math test.";
        }
        else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
        {
            xCycleFrequency = mainERROR_CYCLE_TIME;
            pcStatusMessage = "Error in recursive mutex test.";
        }
        else if( xAreMathsTaskStillRunning() != pdTRUE )
        {
            xCycleFrequency = mainERROR_CYCLE_TIME;
            pcStatusMessage = "Error in floating point Math test.";
        }

        /* Check the reg test tasks are still cycling.  They will stop incrementing
        their loop counters if they encounter an error. */
        if( ulRegTest1CycleCount == ulLastRegTest1CycleCount )
        {
            xCycleFrequency = mainERROR_CYCLE_TIME;
            pcStatusMessage = "Error in RegTest.";
        }

        if( ulRegTest2CycleCount == ulLastRegTest2CycleCount )
        {
            xCycleFrequency = mainERROR_CYCLE_TIME;
            pcStatusMessage = "Error in RegTest.";
        }

        ulLastRegTest1CycleCount = ulRegTest1CycleCount;
        ulLastRegTest2CycleCount = ulRegTest2CycleCount;

        /* Toggle the check LED to give an indication of the system status.  If the
        LED toggles every 5 seconds then everything is ok.  A faster toggle indicates
        an error. */
        vParTestToggleLED( mainCHECK_LED );
    }
}

static void prvCheckTimerCallback( TimerHandle_t xTimer )
{
static long lChangedTimerPeriodAlready = pdFALSE;
static unsigned long ulLastRegTest1Value = 0, ulLastRegTest2Value = 0, ulLastHighFrequencyTimerInterrupts = 0;
static const unsigned long ulExpectedHighFrequencyInterrupts = ( ( mainTEST_INTERRUPT_FREQUENCY / 1000UL ) * mainCHECK_TIMER_PERIOD_MS ) - 10; /* 10 allows for a margin of error. */
unsigned long ulErrorOccurred = pdFALSE;

/* The count of the high frequency timer interrupts. */
extern unsigned long ulHighFrequencyTimerInterrupts;

	/* Avoid compiler warnings. */
	( void ) xTimer;

	/* Check that the register test 1 task is still running. */
	if( ulLastRegTest1Value == ulRegTest1Cycles )
	{
		ulErrorOccurred |= ( 0x01UL << 1UL );
	}
	ulLastRegTest1Value = ulRegTest1Cycles;


	/* Check that the register test 2 task is still running. */
	if( ulLastRegTest2Value == ulRegTest2Cycles )
	{
		ulErrorOccurred |= ( 0x01UL << 2UL );
	}
	ulLastRegTest2Value = ulRegTest2Cycles;

	/* Have any of the standard demo tasks detected an error in their
	operation? */
	if( xAreGenericQueueTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 3UL );
	}
	else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 4UL );
	}
	else if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 5UL );
	}
	else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 6UL );
	}
	else if( xAreIntQueueTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 7UL );
	}
	else if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 8UL );
	}
	else if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 9UL );
	}
	else if( xIsQueueOverwriteTaskStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 10UL );
	}
	else if( xAreQueueSetTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 11UL );
	}
	else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 12UL );
	}
	else if( xAreEventGroupTasksStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 13UL );
	}
	else if( xAreMathsTaskStillRunning() != pdTRUE )
	{
		ulErrorOccurred |= ( 0x01UL << 15UL );
	}

	/* Ensure the expected number of high frequency interrupts have occurred. */
	if( ulLastHighFrequencyTimerInterrupts != 0 )
	{
		if( ( ulHighFrequencyTimerInterrupts - ulLastHighFrequencyTimerInterrupts ) < ulExpectedHighFrequencyInterrupts )
		{
			ulErrorOccurred |= ( 0x01UL << 14UL );
		}
	}
	ulLastHighFrequencyTimerInterrupts = ulHighFrequencyTimerInterrupts;

	if( ulErrorOccurred != pdFALSE )
	{
		/* An error occurred.  Increase the frequency at which the check timer
		toggles its LED to give visual feedback of the potential error
		condition. */
		if( lChangedTimerPeriodAlready == pdFALSE )
		{
			lChangedTimerPeriodAlready = pdTRUE;

			/* This call to xTimerChangePeriod() uses a zero block time.
			Functions called from inside of a timer callback function must
//.........这里部分代码省略.........

static void prvCheckTask( void *pvParameters )
{
TickType_t xNextWakeTime;
const TickType_t xCycleFrequency = pdMS_TO_TICKS( 2500UL );

	/* Just to remove compiler warning. */
	( void ) pvParameters;

	/* Initialise xNextWakeTime - this only needs to be done once. */
	xNextWakeTime = xTaskGetTickCount();

	for( ;; )
	{
		/* Place this task in the blocked state until it is time to run again. */
		vTaskDelayUntil( &xNextWakeTime, xCycleFrequency );

		/* Check the standard demo tasks are running without error. */
		#if( configUSE_PREEMPTION != 0 )
		{
			/* These tasks are only created when preemption is used. */
			if( xAreTimerDemoTasksStillRunning( xCycleFrequency ) != pdTRUE )
			{
				pcStatusMessage = "Error: TimerDemo";
			}
		}
		#endif

		if( xAreTaskNotificationTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error:  Notification";
		}

		if( xAreInterruptSemaphoreTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: IntSem";
		}
		else if( xAreEventGroupTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: EventGroup";
		}
		else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: IntMath";
		}
		else if( xAreGenericQueueTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: GenQueue";
		}
		else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: QueuePeek";
		}
		else if( xAreBlockingQueuesStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: BlockQueue";
		}
		else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: SemTest";
		}
		else if( xArePollingQueuesStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: PollQueue";
		}
		else if( xAreMathsTaskStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Flop";
		}
		else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: RecMutex";
		}
		else if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: CountSem";
		}
		else if( xIsCreateTaskStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: Death";
		}
		else if( xAreDynamicPriorityTasksStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Dynamic";
		}
		else if( xAreQueueSetTasksStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Queue set";
		}
		else if( xIsQueueOverwriteTaskStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Queue overwrite";
		}
		else if( xAreQueueSetPollTasksStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Queue set polling";
		}
		else if( xAreBlockTimeTestTasksStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Block time";
		}
//.........这里部分代码省略.........

static void prvCheckTimerCallback( TimerHandle_t xTimer )
{
static long lChangedTimerPeriodAlready = pdFALSE, lErrorStatus = pdPASS;
static volatile unsigned long ulLastRegTest1CycleCount = 0UL, ulLastRegTest2CycleCount = 0UL;

	/* Remove compiler warnings about unused parameters. */
	( void ) xTimer;

	/* Check the standard demo tasks are running without error. */
	if( xAreGenericQueueTasksStillRunning() != pdTRUE )
	{
		lErrorStatus = pdFAIL;
	}
	else if( xIsCreateTaskStillRunning() != pdTRUE )
	{
		lErrorStatus = pdFAIL;
	}
	else if( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
	{
		lErrorStatus = pdFAIL;
	}
	else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	{
		lErrorStatus = pdFAIL;
	}

	/* Check the reg test tasks are still cycling.  They will stop incrementing
	their loop counters if they encounter an error. */
	if( ulRegTest1CycleCount == ulLastRegTest1CycleCount )
	{
		lErrorStatus = pdFAIL;
	}

	if( ulRegTest2CycleCount == ulLastRegTest2CycleCount )
	{
		lErrorStatus = pdFAIL;
	}

	/* Remember the loop counter values this time around so they can be checked
	again the next time this callback function executes. */
	ulLastRegTest1CycleCount = ulRegTest1CycleCount;
	ulLastRegTest2CycleCount = ulRegTest2CycleCount;

	/* Toggle the check LED to give an indication of the system status.  If
	the LED toggles every three seconds then everything is ok.  A faster toggle
	indicates an error. */
	vParTestToggleLED( mainCHECK_LED );

	/* Was an error detected this time through the callback execution? */
	if( lErrorStatus != pdPASS )
	{
		if( lChangedTimerPeriodAlready == pdFALSE )
		{
			lChangedTimerPeriodAlready = pdTRUE;

			/* This call to xTimerChangePeriod() uses a zero block time.
			Functions called from inside of a timer callback function must
			*never* attempt	to block. */
			xTimerChangePeriod( xCheckTimer, ( mainERROR_CHECK_TIMER_PERIOD_MS ), mainDONT_BLOCK );
		}
	}
}

static void prvCheckTask( void *pvParameters )
{
TickType_t xNextWakeTime;
const TickType_t xCycleFrequency = 2500 / portTICK_PERIOD_MS;

	/* Just to remove compiler warning. */
	( void ) pvParameters;

	/* Initialise xNextWakeTime - this only needs to be done once. */
	xNextWakeTime = xTaskGetTickCount();

	for( ;; )
	{
		/* Place this task in the blocked state until it is time to run again. */
		vTaskDelayUntil( &xNextWakeTime, xCycleFrequency );

		/* Check the standard demo tasks are running without error. */
		#if( configUSE_PREEMPTION != 0 )
		{
			/* These tasks are only created when preemption is used. */
			if( xAreTimerDemoTasksStillRunning( xCycleFrequency ) != pdTRUE )
			{
				pcStatusMessage = "Error: TimerDemo";
			}
		}
		#endif

		if( xAreEventGroupTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: EventGroup";
		}
	    else if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: IntMath";
	    }
		else if( xAreGenericQueueTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: GenQueue";
		}
		else if( xAreQueuePeekTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: QueuePeek";
		}
		else if( xAreBlockingQueuesStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: BlockQueue";
		}
	    else if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: SemTest";
	    }
	    else if( xArePollingQueuesStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: PollQueue";
	    }
		else if( xAreMathsTaskStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Flop";
		}
	    else if( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	    {
			pcStatusMessage = "Error: RecMutex";
		}
		else if( xAreCountingSemaphoreTasksStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: CountSem";
		}
		else if( xIsCreateTaskStillRunning() != pdTRUE )
		{
			pcStatusMessage = "Error: Death";
		}
		else if( xAreDynamicPriorityTasksStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Dynamic";
		}
		else if( xAreQueueSetTasksStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Queue set";
		}
		else if( xIsQueueOverwriteTaskStillRunning() != pdPASS )
		{
			pcStatusMessage = "Error: Queue overwrite";
		}

		/* This is the only task that uses stdout so its ok to call printf()
		directly. */
		printf( "%s - %d\r\n", pcStatusMessage, xTaskGetTickCount() );
	}
}

static long prvCheckOtherTasksAreStillRunning( void )
{
long lReturn = pdPASS;
unsigned long ulHighFrequencyTimerTaskIterations, ulExpectedIncFrequency_ms;

	/* Check all the demo tasks (other than the flash tasks) to ensure
	that they are all still running, and that none have detected an error. */

	if( xAreIntegerMathsTaskStillRunning() != pdTRUE )
	{
		lReturn = pdFAIL;
	}

	if( xAreComTestTasksStillRunning() != pdTRUE )
	{
		lReturn = pdFAIL;
	}

	if( xAreDynamicPriorityTasksStillRunning() != pdTRUE )
	{
		lReturn = pdFAIL;
	}

	if( xAreBlockingQueuesStillRunning() != pdTRUE )
	{
		lReturn = pdFAIL;
	}

	if ( xAreBlockTimeTestTasksStillRunning() != pdTRUE )
	{
		lReturn = pdFAIL;
	}

	if ( xAreGenericQueueTasksStillRunning() != pdTRUE )
	{
		lReturn = pdFAIL;
	}

	if ( xAreRecursiveMutexTasksStillRunning() != pdTRUE )
	{
		lReturn = pdFAIL;
	}

	if( prvAreRegTestTasksStillRunning() != pdTRUE )
	{
		lReturn = pdFAIL;
	}

	if( xIsCreateTaskStillRunning() != pdTRUE )
	{
		lReturn = pdFAIL;
	}

	if( xAreTimerDemoTasksStillRunning( mainNO_ERROR_FLASH_PERIOD_MS ) != pdTRUE )
	{
		lReturn = pdFAIL;
	}

	if( xArePollingQueuesStillRunning() != pdTRUE )
	{
		lReturn = pdFAIL;
	}

	if( xAreSemaphoreTasksStillRunning() != pdTRUE )
	{
		lReturn = pdFAIL;
	}

	/* Obtain the number of times the task associated with the high frequency
	(interrupt nesting) timer test has increment since the check task last
	executed, and the frequency at which it is expected to execute in ms. */
	ulHighFrequencyTimerTaskIterations = ulInterruptNestingTestGetIterationCount( &ulExpectedIncFrequency_ms );
	if( ( ulHighFrequencyTimerTaskIterations < ( ( mainNO_ERROR_FLASH_PERIOD_MS / ulExpectedIncFrequency_ms ) - 1 ) )
		||
		( ulHighFrequencyTimerTaskIterations > ( ( mainNO_ERROR_FLASH_PERIOD_MS / ulExpectedIncFrequency_ms ) +5 ) )
	  )
	{
		/* Would have expected the high frequency timer task to have
		incremented its execution count more times that reported. */
		lReturn = pdFAIL;
	}

	return lReturn;
}