MPMCQueue<T>(size_t capacity);

Constructs a new MPMCQueue holding items of type T with capacity capacity.

void emplace(Args &&... args);

Enqueue an item using inplace construction. Blocks if queue is full.

bool try_emplace(Args &&... args);

Try to enqueue an item using inplace construction. Returns true on success and false if queue is full.

void push(const T &v);

Enqueue an item using copy construction. Blocks if queue is full.

template <typename P> void push(P &&v);

Enqueue an item using move construction. Participates in overload resolution only if std::is_nothrow_constructible<T, P&&>::value == true. Blocks if queue is full.

bool try_push(const T &v);

Try to enqueue an item using copy construction. Returns true on success and false if queue is full.

template <typename P> bool try_push(P &&v);

Try to enqueue an item using move construction. Participates in overload resolution only if std::is_nothrow_constructible<T, P&&>::value == true. Returns true on success and false if queue is full.

void pop(T &v);

Dequeue an item by copying or moving the item into v. Blocks if queue is empty.

bool try_pop(T &v);

Try to dequeue an item by copying or moving the item into v. Return true on sucess and false if the queue is empty.

ssize_t size();

Returns the number of elements in the queue.

The size can be negative when the queue is empty and there is at least one reader waiting. Since this is a concurrent queue the size is only a best effort guess until all reader and writer threads have been joined.

bool empty();

Returns true if the queue is empty.

Since this is a concurrent queue this is only a best effort guess until all reader and writer threads have been joined.