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Introduce the application task hook feature.

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This commit is contained in:
Richard Barry 2008-04-12 09:46:19 +00:00
parent b73dafb1f4
commit da6d27b627
1 changed files with 71 additions and 31 deletions
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102
Source/tasks.c
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@ -61,31 +61,6 @@
#define tskIDLE_STACK_SIZE configMINIMAL_STACK_SIZE
/*
* Default a definitions for backwards compatibility with old
* portmacro.h files.
*/
#ifndef configMAX_TASK_NAME_LEN
#define configMAX_TASK_NAME_LEN 16
#endif
#ifndef configIDLE_SHOULD_YIELD
#define configIDLE_SHOULD_YIELD 1
#endif
#if configMAX_TASK_NAME_LEN < 1
#undef configMAX_TASK_NAME_LEN
#define configMAX_TASK_NAME_LEN 1
#endif
#ifndef INCLUDE_xTaskResumeFromISR
#define INCLUDE_xTaskResumeFromISR 1
#endif
#ifndef INCLUDE_xTaskGetSchedulerState
#define INCLUDE_xTaskGetSchedulerState 0
#endif
/*
* Task control block. A task control block (TCB) is allocated to each task,
* and stores the context of the task.
@ -110,6 +85,10 @@ typedef struct tskTaskControlBlock
#if ( configUSE_MUTEXES == 1 )
unsigned portBASE_TYPE uxBasePriority;
#endif
#if ( configUSE_APPLICATION_TASK_HOOK == 1 )
pdTASK_HOOK_CODE pxTaskHook;
#endif
} tskTCB;
@ -1412,6 +1391,61 @@ inline void vTaskIncrementTick( void )
#endif
/*-----------------------------------------------------------*/
#if ( configUSE_APPLICATION_TASK_HOOK == 1 )
void vTaskSetApplicationTaskHook( xTaskHandle xTask, pdTASK_HOOK_CODE pxHookFunction )
{
tskTCB *xTCB;
/* If xTask is NULL then we are setting our own task hook. */
if( xTask == NULL )
{
xTCB = ( tskTCB * ) pxCurrentTCB;
}
else
{
xTCB = ( tskTCB * ) xTask;
}
/* Save the hook function in the TCB. */
xTCB->pxTaskHook = pxHookFunction;
}
#endif
/*-----------------------------------------------------------*/
#if ( configUSE_APPLICATION_TASK_HOOK == 1 )
portBASE_TYPE xTaskCallApplicationTaskHook( xTaskHandle xTask, void *pvParameter )
{
tskTCB *xTCB;
portBASE_TYPE xReturn;
/* If xTask is NULL then we are calling our own task hook. */
if( xTask == NULL )
{
xTCB = ( tskTCB * ) pxCurrentTCB;
}
else
{
xTCB = ( tskTCB * ) xTask;
}
if( xTCB->pxTaskHook != NULL )
{
xReturn = xTCB->pxTaskHook( pvParameter );
}
else
{
xReturn = pdFAIL;
}
return xReturn;
}
#endif
/*-----------------------------------------------------------*/
void vTaskSwitchContext( void )
{
traceTASK_SWITCHED_OUT();
@ -1695,12 +1729,6 @@ static void prvInitialiseTCBVariables( tskTCB *pxTCB, const signed portCHAR * co
strncpy( ( char * ) pxTCB->pcTaskName, ( const char * ) pcName, ( unsigned portSHORT ) configMAX_TASK_NAME_LEN );
pxTCB->pcTaskName[ ( unsigned portSHORT ) configMAX_TASK_NAME_LEN - ( unsigned portSHORT ) 1 ] = '\0';
#if ( portCRITICAL_NESTING_IN_TCB == 1 )
{
pxTCB->uxCriticalNesting = ( unsigned portBASE_TYPE ) 0;
}
#endif
/* This is used as an array index so must ensure it's not too large. */
if( uxPriority >= configMAX_PRIORITIES )
{
@ -1724,6 +1752,18 @@ static void prvInitialiseTCBVariables( tskTCB *pxTCB, const signed portCHAR * co
/* Event lists are always in priority order. */
listSET_LIST_ITEM_VALUE( &( pxTCB->xEventListItem ), configMAX_PRIORITIES - ( portTickType ) uxPriority );
listSET_LIST_ITEM_OWNER( &( pxTCB->xEventListItem ), pxTCB );
#if ( portCRITICAL_NESTING_IN_TCB == 1 )
{
pxTCB->uxCriticalNesting = ( unsigned portBASE_TYPE ) 0;
}
#endif
#if ( configUSE_APPLICATION_TASK_HOOK == 1 )
{
pxTCB->pxTaskHook = NULL;
}
#endif
}
/*-----------------------------------------------------------*/