RFR: 8244936: Reduce JNI overhead of accessing FileDescriptor

[Peter Levart]

On 5/18/20 10:52 AM, Alan Bateman wrote:
> 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.

Please elaborate. Do you have an example of such use case? Are there any 
existing races possible?


Peter

>
> -Alan