4fe1971b2d
This permits us to safely support concurrent access to files on Plan 9. Concurrent access was already safe on other systems. This does introduce a change: if one goroutine calls a blocking read on a pipe, and another goroutine closes the pipe, then before this CL the close would occur. Now the close will be delayed until the blocking read completes. Also add tests that concurrent I/O and Close on a pipe are OK. For #50436 For #56043 Change-Id: I969c869ea3b8c5c2f2ef319e441a56a3c64e7bf5 Reviewed-on: https://go-review.googlesource.com/c/go/+/438347 Reviewed-by: Bryan Mills <bcmills@google.com> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: David du Colombier <0intro@gmail.com> Run-TryBot: Ian Lance Taylor <iant@google.com> Auto-Submit: Ian Lance Taylor <iant@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Rob Pike <r@golang.org> |
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