Fix plugin can hang if stderr is larger than OS IO buffer #2
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On OS with small process IO buffers (e.g. 4k on Windows), if jextract stderr is larger than the OS buffer, the plugin will hang because the OS will wait for the Java side to consume stderr before allow the subprocess to proceed. The Java side will be blocked on trying to transferring stdout (Buffer Deadlock). To solve this problem, both transfers from stdout and stderr should happen asynchronously. This PR fixes this.
overheadhunter
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Jan 9, 2026
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overheadhunter
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Looks fine, thanks for the fix! 🙌
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On OS with small process IO buffers (e.g. 4k on Windows), if jextract stderr is larger than the OS buffer, the plugin will hang because the OS will wait for the Java side to consume stderr before allow the subprocess to proceed. The Java side will be blocked on trying to transferring stdout (Buffer Deadlock).
To solve this problem, both transfers from stdout and stderr should happen asynchronously. This PR fixes this.