returns 'false' if queue is empty

Pops the next element from the queue, if there is one. Thread-safe when called by consumer thread.

Blocks the current thread until there's enough space to enqueue the given item, then enqueues it (via copy). Thread-safe when called by producer threa

Extracted from private static method of ReaderWriterQueue

Blocks the current thread until there's enough space to enqueue the given item, or the timeout expires. Returns false without enqueueing the item if t

size must be >= 1.

Disable copying

pointer to the value at the front of the queue (for use in-place) or nullptr if empty.

Basic test harness

Returns the total number of items that could be enqueued without incurring an allocation when this queue is empty. Safe to call from both the producer

Returns the total number of items that could be enqueued without incurring an allocation when this queue is empty. Safe to call from both the producer

Returns the maximum number of elements that this circular buffer can hold at once. Thread-safe.

Returns a pointer to the front element in the queue (the one that would be removed next by a call to `try_dequeue` or `pop`). If the queue appears emp

Returns a pointer to the front element in the queue (the one that would be removed next by a call to `try_dequeue` or `pop`). If the queue appears emp

Returns a pointer to the next element in the queue (the one that would be removed next by a call to `try_dequeue` or `try_pop`). If the queue appears

queue must not be empty

If called by consumer, then true size may be more (because producer may be adding items concurrently). If called by producer, then true size may be le

Returns the approximate number of items currently in the queue. Safe to call from both the producer and consumer threads.

Returns a (possibly outdated) snapshot of the total number of elements currently in the buffer. Thread-safe.