Fix race condition with cancellation tokens in Read/Flush operations#59090

Merged

ericstj merged 4 commits intomainfrom

davidfowl/fix-pipe-cancellation-race

Sep 15, 2021

Commits on Sep 14, 2021

Fix race condition with cancellation tokens in Read/Write operations
davidfowl
committed
Add a debug assert to make sure there's no state change.
davidfowl
committed

Commits on Sep 15, 2021