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doc: mention that os package now uses poller

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Updates #20587

Change-Id: I428d20bf8512ba859cc63c439bd5d92a5173fad2
Reviewed-on: https://go-review.googlesource.com/45910
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Ian Lance Taylor 2017-06-15 10:29:34 -07:00
parent 75ab6134fc
commit c7403ac7b6
1 changed files with 9 additions and 0 deletions
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doc/go1.9.html
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@ -608,6 +608,15 @@ CL 40331: https://golang.org/cl/40331: cmd/link,runtime/cgo: enable PT_TLS gener
</dl><!-- net/http/httptest -->
<dl id="os"><dt><a href="/pkg/os/">os</a></dt>
<dd>
<p><!-- CL 36800 -->
The <code>os</code>package now uses the internal runtime poller
for file I/O.
This reduces the number of threads required for read/write
operations on pipes, and eliminates races when one goroutine
closes a file while another using it for I/O.
</p>
<dd>
<p><!-- CL 37915 -->
On Windows,