beginend1 wrote on Friday, January 24, 2014:
Is it safe to use xQueueAddToSet/xQueueRemoveFromSet? The check in those functions are made outside critical section, so there could be race condition. See note in code.
if( ( ( xQUEUE * ) xQueueOrSemaphore )->pxQueueSetContainer != NULL )
{
/* Cannot add a queue/semaphore to more than one queue set. */
xReturn = pdFAIL;
}
/* #### critical setion from here ? #### */
else if( ( ( xQUEUE * ) xQueueOrSemaphore )->uxMessagesWaiting != ( unsigned portBASE_TYPE ) 0 )
{
/* Cannot add a queue/semaphore to a queue set if there are already
items in the queue/semaphore. */
xReturn = pdFAIL;
}
else
{
taskENTER_CRITICAL();
{
( ( xQUEUE * ) xQueueOrSemaphore )->pxQueueSetContainer = xQueueSet;
}
taskEXIT_CRITICAL();
xReturn = pdPASS;
}
return xReturn;