slowness, heap allocations. Each time a Go program allocates memory
// Latency modes: 0=80ms, 1=160ms, 6=560ms, 13=1120ms
，这一点在雷电模拟器官方版本下载中也有详细论述
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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