QueuePointers::pcReadFrom - syntax, references, description

References

Location	Referrer	Text
queue.c:70		int8_t pcReadFrom; /< Points to the last place that a queued item was read from when the structure is used as a queue. */
queue.c:266	xQueueGenericReset()	pxQueue->u.xQueue.pcReadFrom = pxQueue->pcHead + ( ( pxQueue->uxLength - 1U ) * pxQueue->uxItemSize ); /lint !e9016 Pointer arithmetic allowed on char types, especially when it assists conveying intent. /
queue.c:1674	xQueuePeek()	pcOriginalReadPosition = pxQueue->u.xQueue.pcReadFrom;
queue.c:1680	xQueuePeek()	pxQueue->u.xQueue.pcReadFrom = pcOriginalReadPosition;
queue.c:1912	xQueuePeekFromISR()	pcOriginalReadPosition = pxQueue->u.xQueue.pcReadFrom;
queue.c:1914	xQueuePeekFromISR()	pxQueue->u.xQueue.pcReadFrom = pcOriginalReadPosition;
queue.c:2115	prvCopyDataToQueue()	( void ) memcpy( ( void * ) pxQueue->u.xQueue.pcReadFrom, pvItemToQueue, ( size_t ) pxQueue->uxItemSize ); /lint !e961 !e9087 !e418 MISRA exception as the casts are only redundant for some ports. Cast to void required by function signature and safe as no alignment requirement and copy length specified in bytes. Assert checks null pointer only used when length is 0. /
queue.c:2116	prvCopyDataToQueue()	pxQueue->u.xQueue.pcReadFrom -= pxQueue->uxItemSize;
queue.c:2117	prvCopyDataToQueue()	if( pxQueue->u.xQueue.pcReadFrom < pxQueue->pcHead ) /lint !e946 MISRA exception justified as comparison of pointers is the cleanest solution. /
queue.c:2119	prvCopyDataToQueue()	pxQueue->u.xQueue.pcReadFrom = ( pxQueue->u.xQueue.pcTail - pxQueue->uxItemSize );
queue.c:2157	prvCopyDataFromQueue()	pxQueue->u.xQueue.pcReadFrom += pxQueue->uxItemSize; /lint !e9016 Pointer arithmetic on char types ok, especially in this use case where it is the clearest way of conveying intent. /
queue.c:2158	prvCopyDataFromQueue()	if( pxQueue->u.xQueue.pcReadFrom >= pxQueue->u.xQueue.pcTail ) /lint !e946 MISRA exception justified as use of the relational operator is the cleanest solutions. /
queue.c:2160	prvCopyDataFromQueue()	pxQueue->u.xQueue.pcReadFrom = pxQueue->pcHead;
queue.c:2166	prvCopyDataFromQueue()	( void ) memcpy( ( void * ) pvBuffer, ( void * ) pxQueue->u.xQueue.pcReadFrom, ( size_t ) pxQueue->uxItemSize ); /lint !e961 !e418 !e9087 MISRA exception as the casts are only redundant for some ports. Also previous logic ensures a null pointer can only be passed to memcpy() when the count is 0. Cast to void required by function signature and safe as no alignment requirement and copy length specified in bytes. /