RFR: 8274113: (fc) Tune FileChannel.transferFrom() [v3]

[Brian Burkhalter]

On Thu, 12 May 2022 09:12:17 GMT, Alan Bateman <alanb at openjdk.org> wrote:

>> Brian Burkhalter has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   8274113: Invert transferXXXSupported
>
> src/java.base/share/classes/sun/nio/ch/FileChannelImpl.java line 541:
> 
>> 539:     // set this to true if we find out later that it doesn't
>> 540:     //
>> 541:     private static volatile boolean transferToNotSupported = false;
> 
> The motive for inverting these flags was to avoid the volatile write, so you can drop "= false" from both flags now.

Resolved by commit 1ebecd1d07ae6a30a24377df21dd69b364d69d80.

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PR: https://git.openjdk.java.net/jdk/pull/8644