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Test non-shielding root lock acquire on breakpoint entry

msgspec_infect_asyncio
Tyler Goodlet 2021-09-05 15:21:20 -04:00
parent 86f4f2df6f
commit d6ddc47e58
1 changed files with 10 additions and 4 deletions
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14
tractor/_debug.py
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@ -254,6 +254,7 @@ async def _hijack_stdin_for_child(
# assert await stream.receive() == 'pdb_unlock' # assert await stream.receive() == 'pdb_unlock'
except ( except (
trio.MultiError,
trio.BrokenResourceError, trio.BrokenResourceError,
trio.Cancelled, # by local cancellation trio.Cancelled, # by local cancellation
trio.ClosedResourceError, # by self._rx_chan trio.ClosedResourceError, # by self._rx_chan
@ -343,6 +344,7 @@ async def _breakpoint(
except tractor.ContextCancelled: except tractor.ContextCancelled:
log.warning('Root actor cancelled debug lock') log.warning('Root actor cancelled debug lock')
raise
finally: finally:
log.debug(f"Exiting debugger for actor {actor}") log.debug(f"Exiting debugger for actor {actor}")
@ -407,10 +409,14 @@ async def _breakpoint(
'Root actor attempting to shield-acquire active tty lock' 'Root actor attempting to shield-acquire active tty lock'
f' owned by {_global_actor_in_debug}') f' owned by {_global_actor_in_debug}')
with trio.CancelScope(shield=True): stats = _debug_lock.statistics()
# must shield here to avoid hitting a ``Cancelled`` and if stats.owner:
# a child getting stuck bc we clobbered the tty breakpoint()
await _debug_lock.acquire()
# with trio.CancelScope(shield=True):
# must shield here to avoid hitting a ``Cancelled`` and
# a child getting stuck bc we clobbered the tty
await _debug_lock.acquire()
else: else:
# may be cancelled # may be cancelled