block: Writes wait until buffer space is available. Use when you trust the producer to await writes properly.
优化：如果某轮没有发生交换，说明已有序，提前结束
。关于这个话题，搜狗输入法2026提供了深入分析
Мерц резко сменил риторику во время встречи в Китае09:25
She said her experience was extreme and she felt she did not have anyone to talk to.
count[idx]--; // 该值的可用位置-1