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lib.AsyncRunner: Fix asyncio.Event() for Python 3.12+ #61

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Jan Lindemann merged 1 commit from jan/feature/20260815-lib-asyncrunner-fix-asyncio-event-for-python into master 2026-08-15 20:00:30 +02:00 AGit
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Jan Lindemann commented 2026-08-15 19:51:37 +02:00
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lib.AsyncRunner: Fix asyncio.Event() for Python 3.12+

AsyncRunner is currently unused, so this doesn't fix a known behavioural issue. The bug was detected and fixed during AI code analysis instead:

asyncio.Event() raises RuntimeError on Python 3.12+ when created outside a running event loop. It is created in the sync portion of loop_in_thread(), before the threaded loop is up.

The fix is to move the Event creation inside the async main() coroutine and pass it back via a second future. It replaces the fragile as_completed loop with sequential result() calls, so failures are immediately visible rather than causing a silent thread hang.

#### lib.AsyncRunner: Fix asyncio.Event() for Python 3.12+ AsyncRunner is currently unused, so this doesn't fix a known behavioural issue. The bug was detected and fixed during AI code analysis instead: asyncio.Event() raises RuntimeError on Python 3.12+ when created outside a running event loop. It is created in the sync portion of loop_in_thread(), before the threaded loop is up. The fix is to move the Event creation inside the async main() coroutine and pass it back via a second future. It replaces the fragile as_completed loop with sequential result() calls, so failures are immediately visible rather than causing a silent thread hang.
lib.AsyncRunner: Fix asyncio.Event() for Python 3.12+
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ac35da6d9c
 
AsyncRunner is currently unused. This bug was detected and fixed by
AI.

asyncio.Event() raises RuntimeError on Python 3.12+ when created
outside a running event loop. It is created in the sync portion of
loop_in_thread(), before the threaded loop is up.

The fix is to move the Event creation inside the async main()
coroutine and pass it back via a second future. It replaces the
fragile as_completed loop with sequential result() calls, so failures
are immediately visible rather than causing a silent thread hang.

Assisted-by: unsloth/Qwen3.6-27B-MTP-GGUF:Q4_K_M with pi.dev v0.84.1
Signed-off-by: Jan Lindemann <jan@janware.com>
Jan Lindemann scheduled this pull request to auto merge when all checks succeed 2026-08-15 19:51:38 +02:00
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