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doc/go1.16: update runtime and compiler sections

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This resolves all TODOs for the runtime and compiler and mentions
several other changes.

For #40700.
Fixes #42892.
Fixes #42894.

Change-Id: I18d14cfe572baf679ecf8b0a4e82c4b866da5a04
Reviewed-on: https://go-review.googlesource.com/c/go/+/275176
Trust: Austin Clements <austin@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
This commit is contained in:
Austin Clements 2020-12-03 13:53:41 -05:00
parent bacb307b80
commit 4eb7ceba06
1 changed files with 34 additions and 20 deletions
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54
doc/go1.16.html
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@ -286,6 +286,17 @@ Do not send CLs removing the interior tags from such phrases.
See the package documentation for more details.
</p>
<p><!-- CL 254659 -->
Setting the <code>GODEBUG<code> environment variable
to <code>inittrace=1</code> now causes the runtime to emit a single
line to standard error for each package <code>init</code>,
summarizing its execution time and memory allocation. This trace can
be used to find bottlenecks or regressions in Go startup
performance.
The <a href="/pkg/runtime/#hdr-Environment_Variables"><code>GODEBUG</code><
documentation</a> describes the format.
</p>
<p><!-- CL 267100 -->
On Linux, the runtime now defaults to releasing memory to the
operating system promptly (using <code>MADV_DONTNEED</code>), rather
@ -298,10 +309,19 @@ Do not send CLs removing the interior tags from such phrases.
variable.
</p>
<p><!-- CL 220419, CL 271987 -->
The race detector's model for channel operations now more precisely
follows the <a href="/ref/mem">Go memory model</a>. As a result, it
may report now races that it previously missed.
</p>
<h2 id="compiler">Compiler</h2>
<p>
TODO
<p><!-- CL 256459, CL 264837, CL 266203, CL 256460 -->
The compiler can now inline functions with
non-labeled <code>for</code> loops, method values, and type
switches. The inliner can also detect more indirect calls where
inlining is possible.
</p>
<h2 id="linker">Linker</h2>
@ -762,22 +782,6 @@ Do not send CLs removing the interior tags from such phrases.
</dd>
</dl><!-- reflect -->
<dl id="runtime"><dt><a href="/pkg/runtime/">runtime</a></dt>
<dd>
<p><!-- CL 37222 -->
TODO: <a href="https://golang.org/cl/37222">https://golang.org/cl/37222</a>: make stack traces of endless recursion print only top and bottom 50
</p>
<p><!-- CL 242258 -->
TODO: <a href="https://golang.org/cl/242258">https://golang.org/cl/242258</a>: add 24 byte allocation size class
</p>
<p><!-- CL 254659 -->
TODO: <a href="https://golang.org/cl/254659">https://golang.org/cl/254659</a>: implement GODEBUG=inittrace=1 support
</p>
</dd>
</dl><!-- runtime -->
<dl id="runtime/debug"><dt><a href="/pkg/runtime/debug/">runtime/debug</a></dt>
<dd>
<p><!-- CL 249677 -->
@ -804,12 +808,22 @@ Do not send CLs removing the interior tags from such phrases.
<dl id="syscall"><dt><a href="/pkg/syscall/">syscall</a></dt>
<dd>
<p><!-- CL 263271 -->
<a href="/pkg/syscall/?GOOS=windows#NewCallback"><code>NewCallback</code></a>
and
<a href="/pkg/syscall/?GOOS=windows#NewCallbackCDecl"><code>NewCallbackCDecl</code></a>
now correctly support callback functions with multiple
sub-<code>uintptr</code>-sized arguments in a row. This may
require changing uses of these functions to eliminate manual
padding between small arguments.
</p>
<p><!-- CL 261917 -->
<a href="/pkg/syscall/#SysProcAttr"><code>SysProcAttr</code></a> on Windows has a new NoInheritHandles field that disables inheriting handles when creating a new process.
<a href="/pkg/syscall/?GOOS=windows#SysProcAttr"><code>SysProcAttr</code></a> on Windows has a new NoInheritHandles field that disables inheriting handles when creating a new process.
</p>
<p><!-- CL 269761, golang.org/issue/42584 -->
<a href="/pkg/syscall/#DLLError"><code>DLLError</code></a> on Windows now has an Unwrap function for unwrapping its underlying error.
<a href="/pkg/syscall/?GOOS=windows#DLLError"><code>DLLError</code></a> on Windows now has an Unwrap function for unwrapping its underlying error.
</p>
<p><!-- CL 210639 -->