RFR: 8244936: Reduce JNI overhead of accessing FileDescriptor

[Alan Bateman]

On 18/05/2020 09:48, Peter Levart wrote:
> Hi Claes,
>
>
> One step further would be to eliminate access to 
> FileDescriptor.fd/handle from native hot paths altogether and pass the 
> fd/handle to native methods from java:
I was chatting with Claes about this last week and the concern with 
doing this is that it creates problems for async close because it 
increases the window where the native code is using a "raw" file descriptor.

-Alan