concurrent_queue::unsafe_size Method
Returns the number of items in the queue. This method is not concurrency-safe.
size_type unsafe_size() const;
Return Value
The size of the concurrent queue.
Remarks
unsafe_size is not concurrency-safe and can produce incorrect results if called concurrently with calls to the methods push, try_pop, and empty.
Requirements
Header: concurrent_queue.h
Namespace: concurrency