EventBits_t xEventGroupSetBits( EventGroupHandle_t xEventGroup, const EventBits_t uxBitsToSet )
{
ListItem_t *pxListItem, *pxNext;
ListItem_t const *pxListEnd;
List_t *pxList;
EventBits_t uxBitsToClear = 0, uxBitsWaitedFor, uxControlBits;
EventGroup_t *pxEventBits = ( EventGroup_t * ) xEventGroup;
BaseType_t xMatchFound = pdFALSE;
/* Check the user is not attempting to set the bits used by the kernel
itself. */
configASSERT( ( uxBitsToSet & eventEVENT_BITS_CONTROL_BYTES ) == 0 );
pxList = &( pxEventBits->xTasksWaitingForBits );
pxListEnd = listGET_END_MARKER( pxList ); /*lint !e826 !e740 The mini list structure is used as the list end to save RAM. This is checked and valid. */
vTaskSuspendAll();
{
traceEVENT_GROUP_SET_BITS( xEventGroup, uxBitsToSet );
pxListItem = listGET_HEAD_ENTRY( pxList );
/* Set the bits. */
pxEventBits->uxEventBits |= uxBitsToSet;
/* See if the new bit value should unblock any tasks. */
while( pxListItem != pxListEnd )
{
pxNext = listGET_NEXT( pxListItem );
uxBitsWaitedFor = listGET_LIST_ITEM_VALUE( pxListItem );
xMatchFound = pdFALSE;
/* Split the bits waited for from the control bits. */
uxControlBits = uxBitsWaitedFor & eventEVENT_BITS_CONTROL_BYTES;
uxBitsWaitedFor &= ~eventEVENT_BITS_CONTROL_BYTES;
if( ( uxControlBits & eventWAIT_FOR_ALL_BITS ) == ( EventBits_t ) 0 )
{
/* Just looking for single bit being set. */
if( ( uxBitsWaitedFor & pxEventBits->uxEventBits ) != ( EventBits_t ) 0 )
{
xMatchFound = pdTRUE;
}
else
{
mtCOVERAGE_TEST_MARKER();
}
}
else if( ( uxBitsWaitedFor & pxEventBits->uxEventBits ) == uxBitsWaitedFor )
{
/* All bits are set. */
xMatchFound = pdTRUE;
}
else
{
/* Need all bits to be set, but not all the bits were set. */
}
if( xMatchFound != pdFALSE )
{
/* The bits match. Should the bits be cleared on exit? */
if( ( uxControlBits & eventCLEAR_EVENTS_ON_EXIT_BIT ) != ( EventBits_t ) 0 )
{
uxBitsToClear |= uxBitsWaitedFor;
}
else
{
mtCOVERAGE_TEST_MARKER();
}
/* Store the actual event flag value in the task's event list
item before removing the task from the event list. The
eventUNBLOCKED_DUE_TO_BIT_SET bit is set so the task knows
that is was unblocked due to its required bits matching, rather
than because it timed out. */
( void ) xTaskRemoveFromUnorderedEventList( pxListItem, pxEventBits->uxEventBits | eventUNBLOCKED_DUE_TO_BIT_SET );
}
/* Move onto the next list item. Note pxListItem->pxNext is not
used here as the list item may have been removed from the event list
and inserted into the ready/pending reading list. */
pxListItem = pxNext;
}
/* Clear any bits that matched when the eventCLEAR_EVENTS_ON_EXIT_BIT
bit was set in the control word. */
pxEventBits->uxEventBits &= ~uxBitsToClear;
}
( void ) xTaskResumeAll();
return pxEventBits->uxEventBits;
}
/**
* Sjodin
*/
BaseType_t xWcrtCalculateTasksWcrt( void )
{
TickType_t xW = 0U;
const ListItem_t * pxAppTasksListEndMarker = listGET_END_MARKER( pxAllTasksList );
ListItem_t * pxAppTasksListItem = listGET_HEAD_ENTRY( pxAllTasksList );
struct TaskInfo *pxTask = ( struct TaskInfo * ) listGET_LIST_ITEM_OWNER( pxAppTasksListItem );
/* First task WCRT. */
TickType_t xT = pxTask->xWcet;
pxTask->xWcrt = xT;
/* Check first task deadline. */
if( pxTask->xWcrt > pxTask->xPeriod )
{
return pdFALSE;
}
/* Next task. */
pxAppTasksListItem = listGET_NEXT( pxAppTasksListItem );
/* Process all the periodic tasks in xTasks. */
while( pxAppTasksListEndMarker != pxAppTasksListItem )
{
pxTask = ( struct TaskInfo * ) listGET_LIST_ITEM_OWNER( pxAppTasksListItem );
xT = xT + pxTask->xWcet;
while( xT <= pxTask->xDeadline )
{
xW = 0;
/* Calculates the workload of the higher priority tasks than pxTask. */
ListItem_t * pxAppTaskHigherPrioListItem = listGET_HEAD_ENTRY( pxAllTasksList );
do
{
struct TaskInfo * pxHigherPrioTask = ( struct TaskInfo * ) listGET_LIST_ITEM_OWNER( pxAppTaskHigherPrioListItem );
xW = xW + ( U_CEIL( xT, pxHigherPrioTask->xPeriod ) * pxHigherPrioTask->xWcet );
pxAppTaskHigherPrioListItem = listGET_NEXT( pxAppTaskHigherPrioListItem );
}
while( pxAppTaskHigherPrioListItem != pxAppTasksListItem );
xW = xW + pxTask->xWcet;
if( xT == xW )
{
break;
}
else
{
xT = xW;
}
}
if( xT > pxTask->xDeadline )
{
return pdFALSE;
}
pxTask->xWcrt = xT;
pxAppTasksListItem = listGET_NEXT( pxAppTasksListItem );
}
return pdTRUE;
}
