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#coroutines
Title
# coroutines
m

Mukilesh Sethu

08/09/2022, 6:09 AM
I am looking for some help in debugging an issue. I am quite new to coroutines so please pardon my unfamiliarity. There is a long-running job (
launch
) which polls data from a stream, and the reader is closed on
job.invokeOnCompletion
. We use
suspendCancellableCoroutine
to register a callback with the reader. 1 data point is polled at a time. We started seeing a potential memory leak with
CancellableContinuationImpl/ChildContinuation
created as part of
suspendCancellableCoroutine
. We expected only 1 active
CancellableContinuationImpl/ChildContinuation
per job and that is the case but job holds reference to old
ChildContinuation
from earlier which prevents it from getting GC'd (in the
nodeList
) My understanding is that it is detached from the job on successful invocation of
resume
, which is what is expected from our service and even in the heap dump the
state
of `ChildContinuation`denotes it. I am wondering if there is any other scenario where
CancellableContinuationImpl/ChildContinuation
is not removed from the
nodeList
? Or if there is a delay in removing it.
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