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Editorial Team
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Asked: 2026-05-15T08:38:33+00:00

I have a program that’s using the FFMPEG binary libraries via JNI. There is

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I have a program that’s using the FFMPEG binary libraries via JNI. There is a call to open a URL which is blocking in native code, and I need to allow the user to manually cancel this connection. Sometimes Thread.interrupt() works just like it’s supposed to (if the url I’m connecting to is “udp://{whatever}”). If my URL is “rtp://{whatever}”, Thread.interrupt() doesn’t appear to be honored by the native thread. Thread.kill() doesn’t even seem to do it (and is generally frowned on anyhow).

Does anyone know a different way to interrupt or kill a native thread through JNI?

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1 Answer

  1. Editorial Team

    The native code can regularly check the thread to see if it’s interrupted, just as Java code does.

    Another approach is operating-system-specific, but you can send you thread a signal and that signal can set a flag – this may be more straightforward for the JNI-side to check.

    All thread-stopping is cooperative – you tell the thread to stop by setting a flag (via Thread.interrupt() or a flag set in a signal handler – and the thread code checks this often.

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