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doc/go1.19: add release notes for sync/atomic

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For #51400

Change-Id: I32a3aedf1e8a52148a9d78c4f7dae1ea59c810b4
Reviewed-on: https://go-review.googlesource.com/c/go/+/410115
Run-TryBot: Michael Pratt <mpratt@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Michael Knyszek <mknyszek@google.com>
This commit is contained in:
Michael Pratt 2022-06-02 16:43:12 -04:00
parent 7846e25418
commit 559b17fe34
1 changed files with 24 additions and 0 deletions
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doc/go1.19.html
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@ -107,10 +107,34 @@ Do not send CLs removing the interior tags from such phrases.
<p>
TODO: complete this section, or delete if not needed
</p>
<h2 id="library">Core library</h2>
<h3 id="atomic_types">New atomic types</h3>
<p><!-- https://go.dev/issue/50860 --><!-- CL 381317 -->
The <a href="/pkg/sync/atomic/"><code>sync/atomic</code></a> package defines new atomic types
<a href="/pkg/sync/atomic/#Bool"><code>Bool</code></a>,
<a href="/pkg/sync/atomic/#Int32"><code>Int32</code></a>,
<a href="/pkg/sync/atomic/#Int64"><code>Int64</code></a>,
<a href="/pkg/sync/atomic/#Uint32"><code>Uint32</code></a>,
<a href="/pkg/sync/atomic/#Uint64"><code>Uint64</code></a>,
<a href="/pkg/sync/atomic/#Uintptr"><code>Uintptr</code></a>, and
<a href="/pkg/sync/atomic/#Pointer"><code>Pointer</code></a>.
These types hide the underlying values so that all accesses are forced to use
the atomic APIs.
<a href="/pkg/sync/atomic/#Pointer"><code>Pointer</code></a> also avoids
the need to convert to
<a href="/pkg/unsafe/#Pointer"><code>unsafe.Pointer</code></a> at call sites.
<a href="/pkg/sync/atomic/#Int64"><code>Int64</code></a> and
<a href="/pkg/sync/atomic/#Uint64"><code>Uint64</code></a> automatically
receive 64-bit alignment on ARM, 386, and 32-bit MIPS required for 64-bit
atomics on these systems.
</p>
<p>
TODO: complete this section
</p>
<h3 id="minor_library_changes">Minor changes to the library</h3>
<p>
As always, there are various minor changes and updates to the library,