RFR: JDK-8277175 : Add a parallel multiply method to BigInteger

[kabutz]

On Tue, 16 Nov 2021 18:42:42 GMT, Joe Darcy <darcy at openjdk.org> wrote:

> It isn't clear to me that parallelMultiply should be a public method as opposed to an implementation detail.

Hi Joe, thanks for responding. I would have preferred for it to be an implementation detail, but I thought it best to keep things consistent with other parts of the JDK. For example:

- Arrays#sort() vs Arrays#parallelSort()
- Collection#stream() vs Collection#parallelStream()

One could do it as an implementation detail, with a special flag to turn off the functionality. But that would mean that the parallelMultiply() would be on for all multiplications in a system. I would expect that some organizations would for whatever reason not want to use more cores than absolutely necessary?

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PR: https://git.openjdk.java.net/jdk/pull/6409