Method enqueue

ngscuda/concurrentqueue.h:995–999

	// or Traits::MAX_SUBQUEUE_SIZE has been defined and would be surpassed).
	// Thread-safe.
	__host__ __device__ inline bool enqueue(T const& item)
	{
		MOODYCAMEL_CONSTEXPR_IF (INITIAL_IMPLICIT_PRODUCER_HASH_SIZE == 0) return false;
		else return inner_enqueue<CanAlloc>(item);
	}
	
	// Enqueues a single item (by moving it, if possible).
	// Allocates memory if required. Only fails if memory allocation fails (or implicit