| commit | bc593eac2dc63d979a575eccb16c7369a5ff81e0 | [log] [tgz] |
|---|---|---|
| author | Russ Cox <rsc@golang.org> | Sat Jun 29 09:26:19 2019 -0400 |
| committer | Russ Cox <rsc@golang.org> | Mon Jul 01 14:45:49 2019 +0000 |
| tree | 5f2ee4388576493130dc36ed7cc6cf2cc771ef97 | |
| parent | c485e8b55918b3b37e6eab47036ab6f16fec226d [diff] |
sync: document implementation of Once.Do It's not correct to use atomic.CompareAndSwap to implement Once.Do, and we don't, but why we don't is a question that has come up twice on golang-dev in the past few months. Add a comment to help others with the same question. Change-Id: Ia89ec9715cc5442c6e7f13e57a49c6cfe664d32c Reviewed-on: https://go-review.googlesource.com/c/go/+/184261 Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Rob Pike <r@golang.org> Reviewed-by: Ingo Oeser <nightlyone@googlemail.com>
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