[−][src]Function esp_idf_sys::uxQueueMessagesWaiting
pub unsafe extern "C" fn uxQueueMessagesWaiting(
xQueue: QueueHandle_t
) -> UBaseType_t
Return the number of messages stored in a queue.
@param xQueue A handle to the queue being queried.
@return The number of messages available in the queue.
\ingroup QueueManagement