esp_idf_svc::sys

Function uxQueueMessagesWaiting

Source 
pub unsafe extern "C" fn uxQueueMessagesWaiting(
    xQueue: *mut QueueDefinition,
) -> u32
Expand description

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