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by ArielTM
54 days ago
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kqueue/FSEvents is tempting here, but Darwin drops same-process notifications. If you've got a publisher and listener in the same process the listener just never fires. Nasty thing to chase. stat polling looks gross but it's the only thing that actually works everywhere. What happens on WAL checkpoint? When the file shrinks back, does that trigger a wakeup, or does the poller filter size drops? |
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kqueue VNODE events are delivered so long as your process has access to the file. There is no "same-process" notification filter.