len0rd/FreeRTOS-Kernel
1
0
Fork 0
mirror of https://github.com/FreeRTOS/FreeRTOS-Kernel.git synced 2025-10-19 11:17:43 -04:00
Code Issues Projects Releases Packages Wiki Activity

Add event_groups.c and associated functions in other core files.

Browse source 
Added xTimerPendCallbackFromISR() to provide a centralised deferred interrupt handling mechanism.
Add xPortGetLowestEverFreeHeapSize() to heap_4.c.
This commit is contained in:
Richard Barry 2013-11-21 21:46:08 +00:00
parent faed443e82
commit f54f21b8f6
11 changed files with 1511 additions and 80 deletions
Download patch file Download diff file Expand all files Collapse all files

125
FreeRTOS/Source/tasks.c
View file

@ -169,7 +169,6 @@ typedef struct tskTaskControlBlock
} tskTCB;
/*
* Some kernel aware debuggers require the data the debugger needs access to to
* be global, rather than file scope.
@ -1327,7 +1326,9 @@ void vTaskEndScheduler( void )
void vTaskSuspendAll( void )
{
/* A critical section is not required as the variable is of type
portBASE_TYPE. */
portBASE_TYPE. Please read Richard Barry's reply in the following link to a
post in the FreeRTOS support forum before reporting this as a bug! -
http://goo.gl/wu4acr */
++uxSchedulerSuspended;
}
/*----------------------------------------------------------*/
@ -1938,6 +1939,60 @@ portTickType xTimeToWake;
}
/*-----------------------------------------------------------*/
void vTaskPlaceOnUnorderedEventList( xList * pxEventList, portTickType xItemValue, portTickType xTicksToWait )
{
portTickType xTimeToWake;
configASSERT( pxEventList );
/* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED OR THE
SCHEDULER SUSPENDED. */
/* Store the item value in the event list item. */
listSET_LIST_ITEM_VALUE( &( pxCurrentTCB->xEventListItem ), xItemValue );
/* Place the event list item of the TCB at the end of the appropriate event
list. */
vListInsertEnd( pxEventList, &( pxCurrentTCB->xEventListItem ) );
/* The task must be removed from the ready list before it is added to the
blocked list. Exclusive access can be assured to the ready list as the
scheduler is locked. */
if( uxListRemove( &( pxCurrentTCB->xGenericListItem ) ) == ( unsigned portBASE_TYPE ) 0 )
{
/* The current task must be in a ready list, so there is no need to
check, and the port reset macro can be called directly. */
portRESET_READY_PRIORITY( pxCurrentTCB->uxPriority, uxTopReadyPriority );
}
#if ( INCLUDE_vTaskSuspend == 1 )
{
if( xTicksToWait == portMAX_DELAY )
{
/* Add the task to the suspended task list instead of a delayed task
list to ensure it is not woken by a timing event. It will block
indefinitely. */
vListInsertEnd( &xSuspendedTaskList, &( pxCurrentTCB->xGenericListItem ) );
}
else
{
/* Calculate the time at which the task should be woken if the event does
not occur. This may overflow but this doesn't matter. */
xTimeToWake = xTickCount + xTicksToWait;
prvAddCurrentTaskToDelayedList( xTimeToWake );
}
}
#else /* INCLUDE_vTaskSuspend */
{
/* Calculate the time at which the task should be woken if the event does
not occur. This may overflow but this doesn't matter. */
xTimeToWake = xTickCount + xTicksToWait;
prvAddCurrentTaskToDelayedList( xTimeToWake );
}
#endif /* INCLUDE_vTaskSuspend */
}
/*-----------------------------------------------------------*/
#if configUSE_TIMERS == 1
void vTaskPlaceOnEventListRestricted( xList * const pxEventList, portTickType xTicksToWait )
@ -2034,6 +2089,56 @@ portBASE_TYPE xReturn;
}
/*-----------------------------------------------------------*/
signed portBASE_TYPE xTaskRemoveFromUnorderedEventList( xListItem * pxEventListItem, portTickType xItemValue )
{
tskTCB *pxUnblockedTCB;
portBASE_TYPE xReturn;
/* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED OR THE
SCHEDULER SUSPENDED. It can also be called from within an ISR. */
/* Store the new item value in the event list. */
listSET_LIST_ITEM_VALUE( pxEventListItem, xItemValue );
/* Remove the TCB from the delayed list, and add it to the ready list. */
pxUnblockedTCB = ( tskTCB * ) listGET_LIST_ITEM_OWNER( pxEventListItem );
configASSERT( pxUnblockedTCB );
( void ) uxListRemove( pxEventListItem );
if( uxSchedulerSuspended == ( unsigned portBASE_TYPE ) pdFALSE )
{
( void ) uxListRemove( &( pxUnblockedTCB->xGenericListItem ) );
prvAddTaskToReadyList( pxUnblockedTCB );
}
else
{
/* Cannot access the delayed or ready lists, so will hold this task
pending until the scheduler is resumed. */
vListInsertEnd( &( xPendingReadyList ), pxEventListItem );
}
if( pxUnblockedTCB->uxPriority >= pxCurrentTCB->uxPriority )
{
/* Return true if the task removed from the event list has
a higher priority than the calling task. This allows
the calling task to know if it should force a context
switch now. */
xReturn = pdTRUE;
/* Mark that a yield is pending in case the user is not using the
"xHigherPriorityTaskWoken" parameter to an ISR safe FreeRTOS function. */
xYieldPending = pdTRUE;
}
else
{
xReturn = pdFALSE;
}
return xReturn;
}
/*-----------------------------------------------------------*/
void vTaskSetTimeOutState( xTimeOutType * const pxTimeOut )
{
configASSERT( pxTimeOut );
@ -2973,6 +3078,20 @@ tskTCB *pxNewTCB;
}
#endif /* configGENERATE_RUN_TIME_STATS */
/*-----------------------------------------------------------*/
portTickType uxTaskResetEventItemValue( void )
{
portTickType uxReturn;
uxReturn = listGET_LIST_ITEM_VALUE( &( pxCurrentTCB->xEventListItem ) );
/* Reset the event list item to its normal value - so it can be used with
queues and semaphores. */
listSET_LIST_ITEM_VALUE( &( pxCurrentTCB->xEventListItem ), ( ( portTickType ) configMAX_PRIORITIES - ( portTickType ) pxCurrentTCB->uxPriority ) ); /*lint !e961 MISRA exception as the casts are only redundant for some ports. */
return uxReturn;
}
/*-----------------------------------------------------------*/