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Avoid mutate on iterate race

windows_bi_streaming
Tyler Goodlet 2021-06-10 13:59:08 -04:00
parent 8297e765c1
commit 8f25f2d2fa
1 changed files with 4 additions and 1 deletions
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5
tractor/_actor.py
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@ -523,11 +523,14 @@ class Actor:
task_status.started(loop_cs) task_status.started(loop_cs)
async for msg in chan: async for msg in chan:
if msg is None: # loop terminate sentinel if msg is None: # loop terminate sentinel
log.debug( log.debug(
f"Cancelling all tasks for {chan} from {chan.uid}") f"Cancelling all tasks for {chan} from {chan.uid}")
for (channel, cid) in self._rpc_tasks:
for (channel, cid) in self._rpc_tasks.copy():
if channel is chan: if channel is chan:
await self._cancel_task(cid, channel) await self._cancel_task(cid, channel)
log.debug( log.debug(
f"Msg loop signalled to terminate for" f"Msg loop signalled to terminate for"
f" {chan} from {chan.uid}") f" {chan} from {chan.uid}")