You focus on what you want. The system handles how.
Forgetting releaseLock() permanently breaks the stream. The locked property tells you that a stream is locked, but not why, by whom, or whether the lock is even still usable. Piping internally acquires locks, making streams unusable during pipe operations in ways that aren't obvious.
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\begin{bmatrix}。咪咕体育直播在线免费看对此有专业解读