forked from goodboy/tractor
Add a SIGINT handler that kills the process tree
We're not actually using this but it's for reference if we do end up needing it. The std lib's `pdb` internals override SIGINT handling whenever one enters the debugger repl. Force a handler that kills the tree if SIGINT is triggered from the root actor, otherwise ignore it since supervised children should be managed already. This resolves an issue with guest mode where `pdb` causes SIGINTs to be swallowed resulting in the host loop never terminating the process tree.alpha2
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e5845b5d36
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497fa72c96
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@ -196,6 +196,22 @@ async def _acquire_debug_lock(
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log.debug(f"TTY lock released, remote task: {task_name}:{uid}")
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def handler(signum, frame, *args):
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"""Specialized debugger compatible SIGINT handler.
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In childred we always ignore to avoid deadlocks since cancellation
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should always be managed by the parent supervising actor. The root
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is always cancelled on ctrl-c.
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"""
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if is_root_process():
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tractor.current_actor().cancel_soon()
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else:
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print(
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"tractor ignores SIGINT while in debug mode\n"
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"If you have a special need for it please open an issue.\n"
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)
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@tractor.context
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async def _hijack_stdin_for_child(
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