The primary signal is desiredSize on the controller. It can be positive (wants data), zero (at capacity), negative (over capacity), or null (closed). Producers are supposed to check this value and stop enqueueing when it's not positive. But there's nothing enforcing this: controller.enqueue() always succeeds, even when desiredSize is deeply negative.
Which it probably doesn’t. But I can’t shake that feeling.
，这一点在heLLoword翻译官方下载中也有详细论述
Freeing an object is trivial, and when the page count
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「圍繞整肅行動的公開語言並未提供太多有關內部實際情況的細節，從中無法確定究竟是貪腐、政治鬥爭、純粹的清洗，或是其他原因。」新加坡國立大學的莊嘉穎教授說。