Beispiel #1
0
static void prvCheckPendingReadyList( void )
{
	/* Are there any co-routines waiting to get moved to the ready list?  These
	are co-routines that have been readied by an ISR.  The ISR cannot access
	the	ready lists itself. */
	while( !listLIST_IS_EMPTY( &xPendingReadyCoRoutineList ) )
	{
		corCRCB *pxUnblockedCRCB;

		/* The pending ready list can be accessed by an ISR. */
		portDISABLE_INTERRUPTS();
		{	
			pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( (&xPendingReadyCoRoutineList) );			
			vListRemove( &( pxUnblockedCRCB->xEventListItem ) );
		}
		portENABLE_INTERRUPTS();

		vListRemove( &( pxUnblockedCRCB->xGenericListItem ) );
		prvAddCoRoutineToReadyQueue( pxUnblockedCRCB );	
	}
}
signed portBASE_TYPE xCoRoutineRemoveFromEventList( const xList *pxEventList )
{
corCRCB *pxUnblockedCRCB;
signed portBASE_TYPE xReturn;

	/* This function is called from within an interrupt.  It can only access
	event lists and the pending ready list. */
	pxUnblockedCRCB = ( corCRCB * ) listGET_OWNER_OF_HEAD_ENTRY( pxEventList );
	vListRemove( &( pxUnblockedCRCB->xEventListItem ) );
	vListInsertEnd( ( xList * ) &( xPendingReadyCoRoutineList ), &( pxUnblockedCRCB->xEventListItem ) );

	if( pxUnblockedCRCB->uxPriority >= pxCurrentCoRoutine->uxPriority )
	{
		xReturn = pdTRUE;
	}
	else
	{
		xReturn = pdFALSE;
	}

	return xReturn;
}
void vCoRoutineAddToDelayedList( portTickType xTicksToDelay, xList *pxEventList )
{
portTickType xTimeToWake;

	/* Calculate the time to wake - this may overflow but this is
	not a problem. */
	xTimeToWake = xCoRoutineTickCount + xTicksToDelay;

	/* We must remove ourselves from the ready list before adding
	ourselves to the blocked list as the same list item is used for
	both lists. */
	vListRemove( ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );

	/* The list item will be inserted in wake time order. */
	listSET_LIST_ITEM_VALUE( &( pxCurrentCoRoutine->xGenericListItem ), xTimeToWake );

	if( xTimeToWake < xCoRoutineTickCount )
	{
		/* Wake time has overflowed.  Place this item in the
		overflow list. */
		vListInsert( ( xList * ) pxOverflowDelayedCoRoutineList, ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );
	}
	else
	{
		/* The wake time has not overflowed, so we can use the
		current block list. */
		vListInsert( ( xList * ) pxDelayedCoRoutineList, ( xListItem * ) &( pxCurrentCoRoutine->xGenericListItem ) );
	}

	if( pxEventList )
	{
		/* Also add the co-routine to an event list.  If this is done then the
		function must be called with interrupts disabled. */
		vListInsert( pxEventList, &( pxCurrentCoRoutine->xEventListItem ) );
	}
}