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authorJamie Liu <jamieliu@google.com>2021-02-24 18:14:32 -0800
committergVisor bot <gvisor-bot@google.com>2021-02-24 18:16:51 -0800
commit0462dfe9f8bfbe482912caeb2bd636ec005b2b9e (patch)
treec768b59f8f99a11d3e0585337eea1a608d5d355e /g3doc/roadmap.md
parent1d2975ffbe0e32ebcd2fe9307544799b2f9ae632 (diff)
Use sync.Gate in p9.connState.
sync.WaitGroup.Add(positive delta) is illegal if the WaitGroup counter is zero and WaitGroup.Wait() may be called concurrently. This is problematic for p9.connState.pendingWg, which counts inflight requests (so transitions from zero are normal) and is waited-upon when receiving from the underlying Unix domain socket returns an error, e.g. during connection shutdown. (Even if the socket has been closed, new requests can still be concurrently received via flipcall channels.) PiperOrigin-RevId: 359416057
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