75bf2a8c49
Defer the association of the IOCP to the handle until the first I/O operation is performed. A handle can only be associated with one IOCP at a time, so this allows external code to associate the handle with their own IOCP and still be able to use a FD (through os.NewFile) to pass the handle around (e.g. to a child process standard input, output, and error) without having to worry about the IOCP association. This CL doesn't change any user-visible behavior, as os.NewFile still initializes the FD as non-pollable. For #19098. Change-Id: Id22a49846d4fda3a66ffcc0bc1b48eb39b395dc5 Reviewed-on: https://go-review.googlesource.com/c/go/+/661955 Reviewed-by: Damien Neil <dneil@google.com> Reviewed-by: Carlos Amedee <carlos@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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