RFR: 8272297: FileInputStream should override transferTo() for better performance [v2]

[Roman Kennke]

On Thu, 12 Aug 2021 21:07:53 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

>> Please consider this request to add an override `java.io.FileInputStream.transferTo(OutputStream)` with improved performance if the parameter is a `FileOutputStream`.
>
> Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:
> 
>   8272297: Set source position after FC.transferTo(); add test

Is this what you have been asking @mkarg in #4263 to do? Optimize transferTo() only for FileInputStream? Would it interfere with #4263?

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PR: https://git.openjdk.java.net/jdk/pull/5097