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fix: Ctrl+C not terminating backend on Linux (#4316)

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* fix: Ctrl+C not breaking out of backend on Linux

threading.Event.wait() without a timeout blocks at the C level on
Linux, preventing Python from delivering SIGINT.  Use a 1-second
timeout loop so the interpreter can process pending signals.

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This commit is contained in:
Roland Tannous 2026-03-16 11:58:09 +04:00 • committed by GitHub
commit 08b5879101
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2 changed files with 10 additions and 3 deletions
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5
cli/commands/studio.py
View file

@ -144,7 +144,10 @@ def studio_default(
try:
if _shutdown_event is not None:
_shutdown_event.wait()
# NOTE: Event.wait() without a timeout blocks at the C level
# on Linux, preventing Python from delivering SIGINT (Ctrl+C).
while not _shutdown_event.is_set():
_shutdown_event.wait(timeout = 1)
else:
while True:
time.sleep(1)

8
studio/backend/run.py
View file

@ -270,5 +270,9 @@ if __name__ == "__main__":
if hasattr(signal, "SIGBREAK"):
signal.signal(signal.SIGBREAK, _signal_handler)
# Keep running until shutdown signal
_shutdown_event.wait()
# Keep running until shutdown signal.
# NOTE: Event.wait() without a timeout blocks at the C level on Linux,
# which prevents Python from delivering SIGINT (Ctrl+C). Using a
# short timeout in a loop lets the interpreter process pending signals.
while not _shutdown_event.is_set():
_shutdown_event.wait(timeout = 1)