| commit | 2422c5eae5dc6539b4b7657ef7bfe58a65acb61d | [log] [tgz] |
|---|---|---|
| author | Colin Arnott <colin@urandom.co.uk> | Thu Jul 09 07:06:46 2020 +0000 |
| committer | Keith Randall <khr@golang.org> | Tue May 04 00:15:27 2021 +0000 |
| tree | 07113bce1f36d5d684ebcc6a5df4db3296dffb8c | |
| parent | 496d7c691481966fd6ea806205aa025698a172af [diff] |
sync/atomic: add (*Value).Swap and (*Value).CompareAndSwap The functions SwapPointer and CompareAndSwapPointer can be used to interact with unsafe.Pointer, however generally it is prefered to work with Value, due to its safer interface. As such, they have been added along with glue logic to maintain invariants Value guarantees. To meet these guarantees, the current implementation duplicates much of the Store function. Some of this is due to inexperience with concurrency and desire for correctness, but the lack of generic programming functionality does not help. Fixes #39351 Change-Id: I1aa394b1e70944736ac1e19de49fe861e1e46fba Reviewed-on: https://go-review.googlesource.com/c/go/+/241678 Run-TryBot: Ian Lance Taylor <iant@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Reviewed-by: Keith Randall <khr@golang.org>
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