libusb: Fix high CPU usage in callback thread#783

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Copilot wants to merge 9 commits intoconnection-callbackfrom

copilot/optimize-hidapi-thread-wait

Commits on Mar 30, 2026

Initial plan
Copilot
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Fix callback_thread CPU overhead by using proper condition variable pattern

Copilot
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Youw
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Remove build artifacts from tracking, add build/ to .gitignore

Copilot
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Youw
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Apply suggestion from @Youw
Youw
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Add clarifying comment explaining hotplug_cbs is already NULL before signal

Copilot
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Youw
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Move devs init into callback_thread; enumerate locally for ENUMERATE flag

Copilot
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Youw
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Fix double-enumeration: restore devs init before threads, use it for ENUMERATE

Copilot
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Youw
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Fix race condition in libusb hotplug: protect devs with mutex in process_hotplug_event

Copilot
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Youw
committed

Commits on Mar 31, 2026

Merge branch 'connection-callback' into copilot/optimize-hidapi-thread-wait
Youw
authored