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/*
    FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd.
 
    ***************************************************************************
    *                                                                         *
    * If you are:                                                             *
    *                                                                         *
    *    + New to FreeRTOS,                                                   *
    *    + Wanting to learn FreeRTOS or multitasking in general quickly       *
    *    + Looking for basic training,                                        *
    *    + Wanting to improve your FreeRTOS skills and productivity           *
    *                                                                         *
    * then take a look at the FreeRTOS books - available as PDF or paperback  *
    *                                                                         *
    *        "Using the FreeRTOS Real Time Kernel - a Practical Guide"        *
    *                  http://www.FreeRTOS.org/Documentation                  *
    *                                                                         *
    * A pdf reference manual is also available.  Both are usually delivered   *
    * to your inbox within 20 minutes to two hours when purchased between 8am *
    * and 8pm GMT (although please allow up to 24 hours in case of            *
    * exceptional circumstances).  Thank you for your support!                *
    *                                                                         *
    ***************************************************************************
 
    This file is part of the FreeRTOS distribution.
 
    FreeRTOS is free software; you can redistribute it and/or modify it under
    the terms of the GNU General Public License (version 2) as published by the
    Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
    ***NOTE*** The exception to the GPL is included to allow you to distribute
    a combined work that includes FreeRTOS without being obliged to provide the
    source code for proprietary components outside of the FreeRTOS kernel.
    FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
    more details. You should have received a copy of the GNU General Public
    License and the FreeRTOS license exception along with FreeRTOS; if not it
    can be viewed here: http://www.freertos.org/a00114.html and also obtained
    by writing to Richard Barry, contact details for whom are available on the
    FreeRTOS WEB site.
 
    1 tab == 4 spaces!
 
    http://www.FreeRTOS.org - Documentation, latest information, license and
    contact details.
 
    http://www.SafeRTOS.com - A version that is certified for use in safety
    critical systems.
 
    http://www.OpenRTOS.com - Commercial support, development, porting,
    licensing and training services.
*/
 
/*
 * This is a version of BlockTim.c that uses the light weight API.
 *
 * This file contains some test scenarios that ensure tasks do not exit queue
 * send or receive functions prematurely.  A description of the tests is
 * included within the code.
 */
 
/* Kernel includes. */
#include "FreeRTOS.h"
#include "task.h"
#include "queue.h"
 
/* Demo includes. */
#include "AltBlock.h"
 
/* Task priorities. */
#define bktPRIMARY_PRIORITY                     ( 3 )
#define bktSECONDARY_PRIORITY           ( 2 )
 
/* Task behaviour. */
#define bktQUEUE_LENGTH                         ( 5 )
#define bktSHORT_WAIT                           ( ( ( portTickType ) 20 ) / portTICK_RATE_MS )
#define bktPRIMARY_BLOCK_TIME           ( 10 )
#define bktALLOWABLE_MARGIN                     ( 12 )
#define bktTIME_TO_BLOCK                        ( 175 )
#define bktDONT_BLOCK                           ( ( portTickType ) 0 )
#define bktRUN_INDICATOR                        ( ( unsigned portBASE_TYPE ) 0x55 )
 
/* The queue on which the tasks block. */
static xQueueHandle xTestQueue;
 
/* Handle to the secondary task is required by the primary task for calls
to vTaskSuspend/Resume(). */
static xTaskHandle xSecondary;
 
/* Used to ensure that tasks are still executing without error. */
static portBASE_TYPE xPrimaryCycles = 0, xSecondaryCycles = 0;
static portBASE_TYPE xErrorOccurred = pdFALSE;
 
/* Provides a simple mechanism for the primary task to know when the
secondary task has executed. */
static volatile unsigned portBASE_TYPE xRunIndicator;
 
/* The two test tasks.  Their behaviour is commented within the files. */
static void vPrimaryBlockTimeTestTask( void *pvParameters );
static void vSecondaryBlockTimeTestTask( void *pvParameters );
 
/*-----------------------------------------------------------*/
 
void vCreateAltBlockTimeTasks( void )
{
        /* Create the queue on which the two tasks block. */
    xTestQueue = xQueueCreate( bktQUEUE_LENGTH, sizeof( portBASE_TYPE ) );
 
        /* vQueueAddToRegistry() adds the queue to the queue registry, if one is
        in use.  The queue registry is provided as a means for kernel aware
        debuggers to locate queues and has no purpose if a kernel aware debugger
        is not being used.  The call to vQueueAddToRegistry() will be removed
        by the pre-processor if configQUEUE_REGISTRY_SIZE is not defined or is
        defined to be less than 1. */
        vQueueAddToRegistry( xTestQueue, ( signed portCHAR * ) "AltBlockQueue" );
 
 
        /* Create the two test tasks. */
        xTaskCreate( vPrimaryBlockTimeTestTask, ( signed portCHAR * )"FBTest1", configMINIMAL_STACK_SIZE, NULL, bktPRIMARY_PRIORITY, NULL );
        xTaskCreate( vSecondaryBlockTimeTestTask, ( signed portCHAR * )"FBTest2", configMINIMAL_STACK_SIZE, NULL, bktSECONDARY_PRIORITY, &xSecondary );
}
/*-----------------------------------------------------------*/
 
static void vPrimaryBlockTimeTestTask( void *pvParameters )
{
portBASE_TYPE xItem, xData;
portTickType xTimeWhenBlocking;
portTickType xTimeToBlock, xBlockedTime;
 
        #ifdef USE_STDIO
        void vPrintDisplayMessage( const portCHAR * const * ppcMessageToSend );
 
                const portCHAR * const pcTaskStartMsg = "Alt primary block time test started.\r\n";
 
                /* Queue a message for printing to say the task has started. */
                vPrintDisplayMessage( &pcTaskStartMsg );
        #endif
 
        ( void ) pvParameters;
 
        for( ;; )
        {
                /*********************************************************************
        Test 1
 
        Simple block time wakeup test on queue receives. */
                for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )
                {
                        /* The queue is empty. Attempt to read from the queue using a block
                        time.  When we wake, ensure the delta in time is as expected. */
                        xTimeToBlock = bktPRIMARY_BLOCK_TIME << xItem;
 
                        /* A critical section is used to minimise the jitter in the time
                        measurements. */
                        portENTER_CRITICAL();
                        {
                                xTimeWhenBlocking = xTaskGetTickCount();
 
                                /* We should unblock after xTimeToBlock having not received
                                anything on the queue. */
                                if( xQueueAltReceive( xTestQueue, &xData, xTimeToBlock ) != errQUEUE_EMPTY )
                                {
                                        xErrorOccurred = pdTRUE;
                                }
 
                                /* How long were we blocked for? */
                                xBlockedTime = xTaskGetTickCount() - xTimeWhenBlocking;
                        }
                        portEXIT_CRITICAL();
 
                        if( xBlockedTime < xTimeToBlock )
                        {
                                /* Should not have blocked for less than we requested. */
                                xErrorOccurred = pdTRUE;
                        }
 
                        if( xBlockedTime > ( xTimeToBlock + bktALLOWABLE_MARGIN ) )
                        {
                                /* Should not have blocked for longer than we requested,
                                although we would not necessarily run as soon as we were
                                unblocked so a margin is allowed. */
                                xErrorOccurred = pdTRUE;
                        }
                }
 
 
                #if configUSE_PREEMPTION == 0
                        taskYIELD();
                #endif
 
 
                /*********************************************************************
        Test 2
 
        Simple block time wakeup test on queue sends.
 
                First fill the queue.  It should be empty so all sends should pass. */
                for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )
                {
                        if( xQueueAltSendToBack( xTestQueue, &xItem, bktDONT_BLOCK ) != pdPASS )
                        {
                                xErrorOccurred = pdTRUE;
                        }
                }
 
                for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )
                {
                        /* The queue is full. Attempt to write to the queue using a block
                        time.  When we wake, ensure the delta in time is as expected. */
                        xTimeToBlock = bktPRIMARY_BLOCK_TIME << xItem;
 
                        portENTER_CRITICAL();
                        {
                                xTimeWhenBlocking = xTaskGetTickCount();
 
                                /* We should unblock after xTimeToBlock having not received
                                anything on the queue. */
                                if( xQueueAltSendToBack( xTestQueue, &xItem, xTimeToBlock ) != errQUEUE_FULL )
                                {
                                        xErrorOccurred = pdTRUE;
                                }
 
                                /* How long were we blocked for? */
                                xBlockedTime = xTaskGetTickCount() - xTimeWhenBlocking;
                        }
                        portEXIT_CRITICAL();
 
                        if( xBlockedTime < xTimeToBlock )
                        {
                                /* Should not have blocked for less than we requested. */
                                xErrorOccurred = pdTRUE;
                        }
 
                        if( xBlockedTime > ( xTimeToBlock + bktALLOWABLE_MARGIN ) )
                        {
                                /* Should not have blocked for longer than we requested,
                                although we would not necessarily run as soon as we were
                                unblocked so a margin is allowed. */
                                xErrorOccurred = pdTRUE;
                        }
                }
 
                #if configUSE_PREEMPTION == 0
                        taskYIELD();
                #endif
 
 
                /*********************************************************************
        Test 3
 
                Wake the other task, it will block attempting to post to the queue.
                When we read from the queue the other task will wake, but before it
                can run we will post to the queue again.  When the other task runs it
                will find the queue still full, even though it was woken.  It should
                recognise that its block time has not expired and return to block for
                the remains of its block time.
 
                Wake the other task so it blocks attempting to post to the already
                full queue. */
                xRunIndicator = 0;
                vTaskResume( xSecondary );
 
                /* We need to wait a little to ensure the other task executes. */
                while( xRunIndicator != bktRUN_INDICATOR )
                {
                        /* The other task has not yet executed. */
                        vTaskDelay( bktSHORT_WAIT );
                }
                /* Make sure the other task is blocked on the queue. */
                vTaskDelay( bktSHORT_WAIT );
                xRunIndicator = 0;
 
                for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )
                {
                        /* Now when we make space on the queue the other task should wake
                        but not execute as this task has higher priority. */
                        if( xQueueAltReceive( xTestQueue, &xData, bktDONT_BLOCK ) != pdPASS )
                        {
                                xErrorOccurred = pdTRUE;
                        }
 
                        /* Now fill the queue again before the other task gets a chance to
                        execute.  If the other task had executed we would find the queue
                        full ourselves, and the other task have set xRunIndicator. */
                        if( xQueueAltSendToBack( xTestQueue, &xItem, bktDONT_BLOCK ) != pdPASS )
                        {
                                xErrorOccurred = pdTRUE;
                        }
 
                        if( xRunIndicator == bktRUN_INDICATOR )
                        {
                                /* The other task should not have executed. */
                                xErrorOccurred = pdTRUE;
                        }
 
                        /* Raise the priority of the other task so it executes and blocks
                        on the queue again. */
                        vTaskPrioritySet( xSecondary, bktPRIMARY_PRIORITY + 2 );
 
                        /* The other task should now have re-blocked without exiting the
                        queue function. */
                        if( xRunIndicator == bktRUN_INDICATOR )
                        {
                                /* The other task should not have executed outside of the
                                queue function. */
                                xErrorOccurred = pdTRUE;
                        }
 
                        /* Set the priority back down. */
                        vTaskPrioritySet( xSecondary, bktSECONDARY_PRIORITY );
                }
 
                /* Let the other task timeout.  When it unblockes it will check that it
                unblocked at the correct time, then suspend itself. */
                while( xRunIndicator != bktRUN_INDICATOR )
                {
                        vTaskDelay( bktSHORT_WAIT );
                }
                vTaskDelay( bktSHORT_WAIT );
                xRunIndicator = 0;
 
                #if configUSE_PREEMPTION == 0
                        taskYIELD();
                #endif
 
                /*********************************************************************
        Test 4
 
                As per test 3 - but with the send and receive the other way around.
                The other task blocks attempting to read from the queue.
 
                Empty the queue.  We should find that it is full. */
                for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )
                {
                        if( xQueueAltReceive( xTestQueue, &xData, bktDONT_BLOCK ) != pdPASS )
                        {
                                xErrorOccurred = pdTRUE;
                        }
                }
 
                /* Wake the other task so it blocks attempting to read from  the
                already empty queue. */
                vTaskResume( xSecondary );
 
                /* We need to wait a little to ensure the other task executes. */
                while( xRunIndicator != bktRUN_INDICATOR )
                {
                        vTaskDelay( bktSHORT_WAIT );
                }
                vTaskDelay( bktSHORT_WAIT );
                xRunIndicator = 0;
 
                for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )
                {
                        /* Now when we place an item on the queue the other task should
                        wake but not execute as this task has higher priority. */
                        if( xQueueAltSendToBack( xTestQueue, &xItem, bktDONT_BLOCK ) != pdPASS )
                        {
                                xErrorOccurred = pdTRUE;
                        }
 
                        /* Now empty the queue again before the other task gets a chance to
                        execute.  If the other task had executed we would find the queue
                        empty ourselves, and the other task would be suspended. */
                        if( xQueueAltReceive( xTestQueue, &xData, bktDONT_BLOCK ) != pdPASS )
                        {
                                xErrorOccurred = pdTRUE;
                        }
 
                        if( xRunIndicator == bktRUN_INDICATOR )
                        {
                                /* The other task should not have executed. */
                                xErrorOccurred = pdTRUE;
                        }
 
                        /* Raise the priority of the other task so it executes and blocks
                        on the queue again. */
                        vTaskPrioritySet( xSecondary, bktPRIMARY_PRIORITY + 2 );
 
                        /* The other task should now have re-blocked without exiting the
                        queue function. */
                        if( xRunIndicator == bktRUN_INDICATOR )
                        {
                                /* The other task should not have executed outside of the
                                queue function. */
                                xErrorOccurred = pdTRUE;
                        }
                        vTaskPrioritySet( xSecondary, bktSECONDARY_PRIORITY );
                }
 
                /* Let the other task timeout.  When it unblockes it will check that it
                unblocked at the correct time, then suspend itself. */
                while( xRunIndicator != bktRUN_INDICATOR )
                {
                        vTaskDelay( bktSHORT_WAIT );
                }
                vTaskDelay( bktSHORT_WAIT );
 
                xPrimaryCycles++;
        }
}
/*-----------------------------------------------------------*/
 
static void vSecondaryBlockTimeTestTask( void *pvParameters )
{
portTickType xTimeWhenBlocking, xBlockedTime;
portBASE_TYPE xData;
 
        #ifdef USE_STDIO
        void vPrintDisplayMessage( const portCHAR * const * ppcMessageToSend );
 
                const portCHAR * const pcTaskStartMsg = "Alt secondary block time test started.\r\n";
 
                /* Queue a message for printing to say the task has started. */
                vPrintDisplayMessage( &pcTaskStartMsg );
        #endif
 
        ( void ) pvParameters;
 
        for( ;; )
        {
                /*********************************************************************
        Test 1 and 2
 
                This task does does not participate in these tests. */
                vTaskSuspend( NULL );
 
                /*********************************************************************
        Test 3
 
                The first thing we do is attempt to read from the queue.  It should be
                full so we block.  Note the time before we block so we can check the
                wake time is as per that expected. */
                portENTER_CRITICAL();
                {
                        xTimeWhenBlocking = xTaskGetTickCount();
 
                        /* We should unblock after bktTIME_TO_BLOCK having not received
                        anything on the queue. */
                        xData = 0;
                        xRunIndicator = bktRUN_INDICATOR;
                        if( xQueueAltSendToBack( xTestQueue, &xData, bktTIME_TO_BLOCK ) != errQUEUE_FULL )
                        {
                                xErrorOccurred = pdTRUE;
                        }
 
                        /* How long were we inside the send function? */
                        xBlockedTime = xTaskGetTickCount() - xTimeWhenBlocking;
                }
                portEXIT_CRITICAL();
 
                /* We should not have blocked for less time than bktTIME_TO_BLOCK. */
                if( xBlockedTime < bktTIME_TO_BLOCK )
                {
                        xErrorOccurred = pdTRUE;
                }
 
                /* We should of not blocked for much longer than bktALLOWABLE_MARGIN
                either.  A margin is permitted as we would not necessarily run as
                soon as we unblocked. */
                if( xBlockedTime > ( bktTIME_TO_BLOCK + bktALLOWABLE_MARGIN ) )
                {
                        xErrorOccurred = pdTRUE;
                }
 
                /* Suspend ready for test 3. */
                xRunIndicator = bktRUN_INDICATOR;
                vTaskSuspend( NULL );
 
                /*********************************************************************
        Test 4
 
                As per test three, but with the send and receive reversed. */
                portENTER_CRITICAL();
                {
                        xTimeWhenBlocking = xTaskGetTickCount();
 
                        /* We should unblock after bktTIME_TO_BLOCK having not received
                        anything on the queue. */
                        xRunIndicator = bktRUN_INDICATOR;
                        if( xQueueAltReceive( xTestQueue, &xData, bktTIME_TO_BLOCK ) != errQUEUE_EMPTY )
                        {
                                xErrorOccurred = pdTRUE;
                        }
 
                        xBlockedTime = xTaskGetTickCount() - xTimeWhenBlocking;
                }
                portEXIT_CRITICAL();
 
                /* We should not have blocked for less time than bktTIME_TO_BLOCK. */
                if( xBlockedTime < bktTIME_TO_BLOCK )
                {
                        xErrorOccurred = pdTRUE;
                }
 
                /* We should of not blocked for much longer than bktALLOWABLE_MARGIN
                either.  A margin is permitted as we would not necessarily run as soon
                as we unblocked. */
                if( xBlockedTime > ( bktTIME_TO_BLOCK + bktALLOWABLE_MARGIN ) )
                {
                        xErrorOccurred = pdTRUE;
                }
 
                xRunIndicator = bktRUN_INDICATOR;
 
                xSecondaryCycles++;
        }
}
/*-----------------------------------------------------------*/
 
portBASE_TYPE xAreAltBlockTimeTestTasksStillRunning( void )
{
static portBASE_TYPE xLastPrimaryCycleCount = 0, xLastSecondaryCycleCount = 0;
portBASE_TYPE xReturn = pdPASS;
 
        /* Have both tasks performed at least one cycle since this function was
        last called? */
        if( xPrimaryCycles == xLastPrimaryCycleCount )
        {
                xReturn = pdFAIL;
        }
 
        if( xSecondaryCycles == xLastSecondaryCycleCount )
        {
                xReturn = pdFAIL;
        }
 
        if( xErrorOccurred == pdTRUE )
        {
                xReturn = pdFAIL;
        }
 
        xLastSecondaryCycleCount = xSecondaryCycles;
        xLastPrimaryCycleCount = xPrimaryCycles;
 
        return xReturn;
}

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Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [rtos/] [freertos-6.1.1/] [Demo/] [Common/] [Minimal/] [AltBlock.c] - Blame information for rev 609

Line No.	Rev	Author	Line
1	606	jeremybenn	`/*`
2			`FreeRTOS V6.1.1 - Copyright (C) 2011 Real Time Engineers Ltd.`
3
4			`***************************************************************************`
5			`* *`
6			`* If you are: *`
7			`* *`
8			`* + New to FreeRTOS, *`
9			`* + Wanting to learn FreeRTOS or multitasking in general quickly *`
10			`* + Looking for basic training, *`
11			`* + Wanting to improve your FreeRTOS skills and productivity *`
12			`* *`
13			`* then take a look at the FreeRTOS books - available as PDF or paperback *`
14			`* *`
15			`* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *`
16			`* http://www.FreeRTOS.org/Documentation *`
17			`* *`
18			`* A pdf reference manual is also available. Both are usually delivered *`
19			`* to your inbox within 20 minutes to two hours when purchased between 8am *`
20			`* and 8pm GMT (although please allow up to 24 hours in case of *`
21			`* exceptional circumstances). Thank you for your support! *`
22			`* *`
23			`***************************************************************************`
24
25			`This file is part of the FreeRTOS distribution.`
26
27			`FreeRTOS is free software; you can redistribute it and/or modify it under`
28			`the terms of the GNU General Public License (version 2) as published by the`
29			`Free Software Foundation AND MODIFIED BY the FreeRTOS exception.`
30			`*NOTE* The exception to the GPL is included to allow you to distribute`
31			`a combined work that includes FreeRTOS without being obliged to provide the`
32			`source code for proprietary components outside of the FreeRTOS kernel.`
33			`FreeRTOS is distributed in the hope that it will be useful, but WITHOUT`
34			`ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or`
35			`FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for`
36			`more details. You should have received a copy of the GNU General Public`
37			`License and the FreeRTOS license exception along with FreeRTOS; if not it`
38			`can be viewed here: http://www.freertos.org/a00114.html and also obtained`
39			`by writing to Richard Barry, contact details for whom are available on the`
40			`FreeRTOS WEB site.`
41
42			`1 tab == 4 spaces!`
43
44			`http://www.FreeRTOS.org - Documentation, latest information, license and`
45			`contact details.`
46
47			`http://www.SafeRTOS.com - A version that is certified for use in safety`
48			`critical systems.`
49
50			`http://www.OpenRTOS.com - Commercial support, development, porting,`
51			`licensing and training services.`
52			`*/`
53
54			`/*`
55			`* This is a version of BlockTim.c that uses the light weight API.`
56			`*`
57			`* This file contains some test scenarios that ensure tasks do not exit queue`
58			`* send or receive functions prematurely. A description of the tests is`
59			`* included within the code.`
60			`*/`
61
62			`/* Kernel includes. */`
63			`#include "FreeRTOS.h"`
64			`#include "task.h"`
65			`#include "queue.h"`
66
67			`/* Demo includes. */`
68			`#include "AltBlock.h"`
69
70			`/* Task priorities. */`
71			`#define bktPRIMARY_PRIORITY ( 3 )`
72			`#define bktSECONDARY_PRIORITY ( 2 )`
73
74			`/* Task behaviour. */`
75			`#define bktQUEUE_LENGTH ( 5 )`
76			`#define bktSHORT_WAIT ( ( ( portTickType ) 20 ) / portTICK_RATE_MS )`
77			`#define bktPRIMARY_BLOCK_TIME ( 10 )`
78			`#define bktALLOWABLE_MARGIN ( 12 )`
79			`#define bktTIME_TO_BLOCK ( 175 )`
80			`#define bktDONT_BLOCK ( ( portTickType ) 0 )`
81			`#define bktRUN_INDICATOR ( ( unsigned portBASE_TYPE ) 0x55 )`
82
83			`/* The queue on which the tasks block. */`
84			`static xQueueHandle xTestQueue;`
85
86			`/* Handle to the secondary task is required by the primary task for calls`
87			`to vTaskSuspend/Resume(). */`
88			`static xTaskHandle xSecondary;`
89
90			`/* Used to ensure that tasks are still executing without error. */`
91			`static portBASE_TYPE xPrimaryCycles = 0, xSecondaryCycles = 0;`
92			`static portBASE_TYPE xErrorOccurred = pdFALSE;`
93
94			`/* Provides a simple mechanism for the primary task to know when the`
95			`secondary task has executed. */`
96			`static volatile unsigned portBASE_TYPE xRunIndicator;`
97
98			`/* The two test tasks. Their behaviour is commented within the files. */`
99			`static void vPrimaryBlockTimeTestTask( void *pvParameters );`
100			`static void vSecondaryBlockTimeTestTask( void *pvParameters );`
101
102			`/-----------------------------------------------------------/`
103
104			`void vCreateAltBlockTimeTasks( void )`
105			`{`
106			`/* Create the queue on which the two tasks block. */`
107			`xTestQueue = xQueueCreate( bktQUEUE_LENGTH, sizeof( portBASE_TYPE ) );`
108
109			`/* vQueueAddToRegistry() adds the queue to the queue registry, if one is`
110			`in use. The queue registry is provided as a means for kernel aware`
111			`debuggers to locate queues and has no purpose if a kernel aware debugger`
112			`is not being used. The call to vQueueAddToRegistry() will be removed`
113			`by the pre-processor if configQUEUE_REGISTRY_SIZE is not defined or is`
114			`defined to be less than 1. */`
115			`vQueueAddToRegistry( xTestQueue, ( signed portCHAR * ) "AltBlockQueue" );`
116
117
118			`/* Create the two test tasks. */`
119			`xTaskCreate( vPrimaryBlockTimeTestTask, ( signed portCHAR * )"FBTest1", configMINIMAL_STACK_SIZE, NULL, bktPRIMARY_PRIORITY, NULL );`
120			`xTaskCreate( vSecondaryBlockTimeTestTask, ( signed portCHAR * )"FBTest2", configMINIMAL_STACK_SIZE, NULL, bktSECONDARY_PRIORITY, &xSecondary );`
121			`}`
122			`/-----------------------------------------------------------/`
123
124			`static void vPrimaryBlockTimeTestTask( void *pvParameters )`
125			`{`
126			`portBASE_TYPE xItem, xData;`
127			`portTickType xTimeWhenBlocking;`
128			`portTickType xTimeToBlock, xBlockedTime;`
129
130			`#ifdef USE_STDIO`
131			`void vPrintDisplayMessage( const portCHAR * const * ppcMessageToSend );`
132
133			`const portCHAR * const pcTaskStartMsg = "Alt primary block time test started.\r\n";`
134
135			`/* Queue a message for printing to say the task has started. */`
136			`vPrintDisplayMessage( &pcTaskStartMsg );`
137			`#endif`
138
139			`( void ) pvParameters;`
140
141			`for( ;; )`
142			`{`
143			`/*********************************************************************`
144			`Test 1`
145
146			`Simple block time wakeup test on queue receives. */`
147			`for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )`
148			`{`
149			`/* The queue is empty. Attempt to read from the queue using a block`
150			`time. When we wake, ensure the delta in time is as expected. */`
151			`xTimeToBlock = bktPRIMARY_BLOCK_TIME << xItem;`
152
153			`/* A critical section is used to minimise the jitter in the time`
154			`measurements. */`
155			`portENTER_CRITICAL();`
156			`{`
157			`xTimeWhenBlocking = xTaskGetTickCount();`
158
159			`/* We should unblock after xTimeToBlock having not received`
160			`anything on the queue. */`
161			`if( xQueueAltReceive( xTestQueue, &xData, xTimeToBlock ) != errQUEUE_EMPTY )`
162			`{`
163			`xErrorOccurred = pdTRUE;`
164			`}`
165
166			`/* How long were we blocked for? */`
167			`xBlockedTime = xTaskGetTickCount() - xTimeWhenBlocking;`
168			`}`
169			`portEXIT_CRITICAL();`
170
171			`if( xBlockedTime < xTimeToBlock )`
172			`{`
173			`/* Should not have blocked for less than we requested. */`
174			`xErrorOccurred = pdTRUE;`
175			`}`
176
177			`if( xBlockedTime > ( xTimeToBlock + bktALLOWABLE_MARGIN ) )`
178			`{`
179			`/* Should not have blocked for longer than we requested,`
180			`although we would not necessarily run as soon as we were`
181			`unblocked so a margin is allowed. */`
182			`xErrorOccurred = pdTRUE;`
183			`}`
184			`}`
185
186
187			`#if configUSE_PREEMPTION == 0`
188			`taskYIELD();`
189			`#endif`
190
191
192			`/*********************************************************************`
193			`Test 2`
194
195			`Simple block time wakeup test on queue sends.`
196
197			`First fill the queue. It should be empty so all sends should pass. */`
198			`for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )`
199			`{`
200			`if( xQueueAltSendToBack( xTestQueue, &xItem, bktDONT_BLOCK ) != pdPASS )`
201			`{`
202			`xErrorOccurred = pdTRUE;`
203			`}`
204			`}`
205
206			`for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )`
207			`{`
208			`/* The queue is full. Attempt to write to the queue using a block`
209			`time. When we wake, ensure the delta in time is as expected. */`
210			`xTimeToBlock = bktPRIMARY_BLOCK_TIME << xItem;`
211
212			`portENTER_CRITICAL();`
213			`{`
214			`xTimeWhenBlocking = xTaskGetTickCount();`
215
216			`/* We should unblock after xTimeToBlock having not received`
217			`anything on the queue. */`
218			`if( xQueueAltSendToBack( xTestQueue, &xItem, xTimeToBlock ) != errQUEUE_FULL )`
219			`{`
220			`xErrorOccurred = pdTRUE;`
221			`}`
222
223			`/* How long were we blocked for? */`
224			`xBlockedTime = xTaskGetTickCount() - xTimeWhenBlocking;`
225			`}`
226			`portEXIT_CRITICAL();`
227
228			`if( xBlockedTime < xTimeToBlock )`
229			`{`
230			`/* Should not have blocked for less than we requested. */`
231			`xErrorOccurred = pdTRUE;`
232			`}`
233
234			`if( xBlockedTime > ( xTimeToBlock + bktALLOWABLE_MARGIN ) )`
235			`{`
236			`/* Should not have blocked for longer than we requested,`
237			`although we would not necessarily run as soon as we were`
238			`unblocked so a margin is allowed. */`
239			`xErrorOccurred = pdTRUE;`
240			`}`
241			`}`
242
243			`#if configUSE_PREEMPTION == 0`
244			`taskYIELD();`
245			`#endif`
246
247
248			`/*********************************************************************`
249			`Test 3`
250
251			`Wake the other task, it will block attempting to post to the queue.`
252			`When we read from the queue the other task will wake, but before it`
253			`can run we will post to the queue again. When the other task runs it`
254			`will find the queue still full, even though it was woken. It should`
255			`recognise that its block time has not expired and return to block for`
256			`the remains of its block time.`
257
258			`Wake the other task so it blocks attempting to post to the already`
259			`full queue. */`
260			`xRunIndicator = 0;`
261			`vTaskResume( xSecondary );`
262
263			`/* We need to wait a little to ensure the other task executes. */`
264			`while( xRunIndicator != bktRUN_INDICATOR )`
265			`{`
266			`/* The other task has not yet executed. */`
267			`vTaskDelay( bktSHORT_WAIT );`
268			`}`
269			`/* Make sure the other task is blocked on the queue. */`
270			`vTaskDelay( bktSHORT_WAIT );`
271			`xRunIndicator = 0;`
272
273			`for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )`
274			`{`
275			`/* Now when we make space on the queue the other task should wake`
276			`but not execute as this task has higher priority. */`
277			`if( xQueueAltReceive( xTestQueue, &xData, bktDONT_BLOCK ) != pdPASS )`
278			`{`
279			`xErrorOccurred = pdTRUE;`
280			`}`
281
282			`/* Now fill the queue again before the other task gets a chance to`
283			`execute. If the other task had executed we would find the queue`
284			`full ourselves, and the other task have set xRunIndicator. */`
285			`if( xQueueAltSendToBack( xTestQueue, &xItem, bktDONT_BLOCK ) != pdPASS )`
286			`{`
287			`xErrorOccurred = pdTRUE;`
288			`}`
289
290			`if( xRunIndicator == bktRUN_INDICATOR )`
291			`{`
292			`/* The other task should not have executed. */`
293			`xErrorOccurred = pdTRUE;`
294			`}`
295
296			`/* Raise the priority of the other task so it executes and blocks`
297			`on the queue again. */`
298			`vTaskPrioritySet( xSecondary, bktPRIMARY_PRIORITY + 2 );`
299
300			`/* The other task should now have re-blocked without exiting the`
301			`queue function. */`
302			`if( xRunIndicator == bktRUN_INDICATOR )`
303			`{`
304			`/* The other task should not have executed outside of the`
305			`queue function. */`
306			`xErrorOccurred = pdTRUE;`
307			`}`
308
309			`/* Set the priority back down. */`
310			`vTaskPrioritySet( xSecondary, bktSECONDARY_PRIORITY );`
311			`}`
312
313			`/* Let the other task timeout. When it unblockes it will check that it`
314			`unblocked at the correct time, then suspend itself. */`
315			`while( xRunIndicator != bktRUN_INDICATOR )`
316			`{`
317			`vTaskDelay( bktSHORT_WAIT );`
318			`}`
319			`vTaskDelay( bktSHORT_WAIT );`
320			`xRunIndicator = 0;`
321
322			`#if configUSE_PREEMPTION == 0`
323			`taskYIELD();`
324			`#endif`
325
326			`/*********************************************************************`
327			`Test 4`
328
329			`As per test 3 - but with the send and receive the other way around.`
330			`The other task blocks attempting to read from the queue.`
331
332			`Empty the queue. We should find that it is full. */`
333			`for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )`
334			`{`
335			`if( xQueueAltReceive( xTestQueue, &xData, bktDONT_BLOCK ) != pdPASS )`
336			`{`
337			`xErrorOccurred = pdTRUE;`
338			`}`
339			`}`
340
341			`/* Wake the other task so it blocks attempting to read from the`
342			`already empty queue. */`
343			`vTaskResume( xSecondary );`
344
345			`/* We need to wait a little to ensure the other task executes. */`
346			`while( xRunIndicator != bktRUN_INDICATOR )`
347			`{`
348			`vTaskDelay( bktSHORT_WAIT );`
349			`}`
350			`vTaskDelay( bktSHORT_WAIT );`
351			`xRunIndicator = 0;`
352
353			`for( xItem = 0; xItem < bktQUEUE_LENGTH; xItem++ )`
354			`{`
355			`/* Now when we place an item on the queue the other task should`
356			`wake but not execute as this task has higher priority. */`
357			`if( xQueueAltSendToBack( xTestQueue, &xItem, bktDONT_BLOCK ) != pdPASS )`
358			`{`
359			`xErrorOccurred = pdTRUE;`
360			`}`
361
362			`/* Now empty the queue again before the other task gets a chance to`
363			`execute. If the other task had executed we would find the queue`
364			`empty ourselves, and the other task would be suspended. */`
365			`if( xQueueAltReceive( xTestQueue, &xData, bktDONT_BLOCK ) != pdPASS )`
366			`{`
367			`xErrorOccurred = pdTRUE;`
368			`}`
369
370			`if( xRunIndicator == bktRUN_INDICATOR )`
371			`{`
372			`/* The other task should not have executed. */`
373			`xErrorOccurred = pdTRUE;`
374			`}`
375
376			`/* Raise the priority of the other task so it executes and blocks`
377			`on the queue again. */`
378			`vTaskPrioritySet( xSecondary, bktPRIMARY_PRIORITY + 2 );`
379
380			`/* The other task should now have re-blocked without exiting the`
381			`queue function. */`
382			`if( xRunIndicator == bktRUN_INDICATOR )`
383			`{`
384			`/* The other task should not have executed outside of the`
385			`queue function. */`
386			`xErrorOccurred = pdTRUE;`
387			`}`
388			`vTaskPrioritySet( xSecondary, bktSECONDARY_PRIORITY );`
389			`}`
390
391			`/* Let the other task timeout. When it unblockes it will check that it`
392			`unblocked at the correct time, then suspend itself. */`
393			`while( xRunIndicator != bktRUN_INDICATOR )`
394			`{`
395			`vTaskDelay( bktSHORT_WAIT );`
396			`}`
397			`vTaskDelay( bktSHORT_WAIT );`
398
399			`xPrimaryCycles++;`
400			`}`
401			`}`
402			`/-----------------------------------------------------------/`
403
404			`static void vSecondaryBlockTimeTestTask( void *pvParameters )`
405			`{`
406			`portTickType xTimeWhenBlocking, xBlockedTime;`
407			`portBASE_TYPE xData;`
408
409			`#ifdef USE_STDIO`
410			`void vPrintDisplayMessage( const portCHAR * const * ppcMessageToSend );`
411
412			`const portCHAR * const pcTaskStartMsg = "Alt secondary block time test started.\r\n";`
413
414			`/* Queue a message for printing to say the task has started. */`
415			`vPrintDisplayMessage( &pcTaskStartMsg );`
416			`#endif`
417
418			`( void ) pvParameters;`
419
420			`for( ;; )`
421			`{`
422			`/*********************************************************************`
423			`Test 1 and 2`
424
425			`This task does does not participate in these tests. */`
426			`vTaskSuspend( NULL );`
427
428			`/*********************************************************************`
429			`Test 3`
430
431			`The first thing we do is attempt to read from the queue. It should be`
432			`full so we block. Note the time before we block so we can check the`
433			`wake time is as per that expected. */`
434			`portENTER_CRITICAL();`
435			`{`
436			`xTimeWhenBlocking = xTaskGetTickCount();`
437
438			`/* We should unblock after bktTIME_TO_BLOCK having not received`
439			`anything on the queue. */`
440			`xData = 0;`
441			`xRunIndicator = bktRUN_INDICATOR;`
442			`if( xQueueAltSendToBack( xTestQueue, &xData, bktTIME_TO_BLOCK ) != errQUEUE_FULL )`
443			`{`
444			`xErrorOccurred = pdTRUE;`
445			`}`
446
447			`/* How long were we inside the send function? */`
448			`xBlockedTime = xTaskGetTickCount() - xTimeWhenBlocking;`
449			`}`
450			`portEXIT_CRITICAL();`
451
452			`/* We should not have blocked for less time than bktTIME_TO_BLOCK. */`
453			`if( xBlockedTime < bktTIME_TO_BLOCK )`
454			`{`
455			`xErrorOccurred = pdTRUE;`
456			`}`
457
458			`/* We should of not blocked for much longer than bktALLOWABLE_MARGIN`
459			`either. A margin is permitted as we would not necessarily run as`
460			`soon as we unblocked. */`
461			`if( xBlockedTime > ( bktTIME_TO_BLOCK + bktALLOWABLE_MARGIN ) )`
462			`{`
463			`xErrorOccurred = pdTRUE;`
464			`}`
465
466			`/* Suspend ready for test 3. */`
467			`xRunIndicator = bktRUN_INDICATOR;`
468			`vTaskSuspend( NULL );`
469
470			`/*********************************************************************`
471			`Test 4`
472
473			`As per test three, but with the send and receive reversed. */`
474			`portENTER_CRITICAL();`
475			`{`
476			`xTimeWhenBlocking = xTaskGetTickCount();`
477
478			`/* We should unblock after bktTIME_TO_BLOCK having not received`
479			`anything on the queue. */`
480			`xRunIndicator = bktRUN_INDICATOR;`
481			`if( xQueueAltReceive( xTestQueue, &xData, bktTIME_TO_BLOCK ) != errQUEUE_EMPTY )`
482			`{`
483			`xErrorOccurred = pdTRUE;`
484			`}`
485
486			`xBlockedTime = xTaskGetTickCount() - xTimeWhenBlocking;`
487			`}`
488			`portEXIT_CRITICAL();`
489
490			`/* We should not have blocked for less time than bktTIME_TO_BLOCK. */`
491			`if( xBlockedTime < bktTIME_TO_BLOCK )`
492			`{`
493			`xErrorOccurred = pdTRUE;`
494			`}`
495
496			`/* We should of not blocked for much longer than bktALLOWABLE_MARGIN`
497			`either. A margin is permitted as we would not necessarily run as soon`
498			`as we unblocked. */`
499			`if( xBlockedTime > ( bktTIME_TO_BLOCK + bktALLOWABLE_MARGIN ) )`
500			`{`
501			`xErrorOccurred = pdTRUE;`
502			`}`
503
504			`xRunIndicator = bktRUN_INDICATOR;`
505
506			`xSecondaryCycles++;`
507			`}`
508			`}`
509			`/-----------------------------------------------------------/`
510
511			`portBASE_TYPE xAreAltBlockTimeTestTasksStillRunning( void )`
512			`{`
513			`static portBASE_TYPE xLastPrimaryCycleCount = 0, xLastSecondaryCycleCount = 0;`
514			`portBASE_TYPE xReturn = pdPASS;`
515
516			`/* Have both tasks performed at least one cycle since this function was`
517			`last called? */`
518			`if( xPrimaryCycles == xLastPrimaryCycleCount )`
519			`{`
520			`xReturn = pdFAIL;`
521			`}`
522
523			`if( xSecondaryCycles == xLastSecondaryCycleCount )`
524			`{`
525			`xReturn = pdFAIL;`
526			`}`
527
528			`if( xErrorOccurred == pdTRUE )`
529			`{`
530			`xReturn = pdFAIL;`
531			`}`
532
533			`xLastSecondaryCycleCount = xSecondaryCycles;`
534			`xLastPrimaryCycleCount = xPrimaryCycles;`
535
536			`return xReturn;`
537			`}`