Concurrently unsafe member functions

All member functions in this section can only be performed serially. The behavior is undefined in case of concurrent execution of these methods with other (either concurrently safe) methods.

The number of elements

size_type unsafe_size() const;

Returns: the number of elements in the container.

---

bool empty() const;

Returns: true if the container is empty; false, otherwise.

clear

void clear();

Removes all elements from the container.

swap

void swap( concurrent_queue& other );

Swaps contents of *this and other.

Swaps allocators if std::allocator_traits<allocator_type>::propagate_on_container_swap::value is true.

Otherwise if get_allocator() != other.get_allocator() the behavior is undefined.