Function max_capacity

readerwriterqueue.h:517–527

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 and consumer threads. NOTE: The actual capacity during usage may be different depending on the consumer. If the consumer is removing elements concurrently, the producer cannot add to the block the consumer is removing from until it's completely emp

	//       the case where the producer was writing to the same block the consumer was
	//       reading from the whole time.
	inline size_t max_capacity() const {
		size_t result = 0;
		Block* frontBlock_ = frontBlock.load();
		Block* block = frontBlock_;
		do {
			fence(memory_order_acquire);
			result += block->sizeMask;
			block = block->next.load();
		} while (block != frontBlock_);
		return result;
	}


private: