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runtime: document that NumCPU does not change
Fixes #11609. Change-Id: I3cf64164fde28ebf739706728b84d8ef5b6dc90e Reviewed-on: https://go-review.googlesource.com/17456 Reviewed-by: Ian Lance Taylor <iant@golang.org>
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@ -35,6 +35,10 @@ func GOMAXPROCS(n int) int {
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}
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// NumCPU returns the number of logical CPUs usable by the current process.
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//
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// The set of available CPUs is checked by querying the operating system
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// at process startup. Changes to operating system CPU allocation after
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// process startup are not reflected.
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func NumCPU() int {
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return int(ncpu)
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}
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