adding rsockets support into JDK

[Alan Bateman]

On 14/12/2018 17:47, Chris Hegarty wrote:
> :
> 3) I think your work-around for Issue #1 is probably ok. I refined it a
>    little so avoid accessing the flags unless necessary. I think this may
>    be slightly more efficient, since the typical non-blocking usage will
>    be preceded by a select/rpoll.
>
>    src/jdk.net/linux/native/libextnet/LinuxRdmaSocketDispatcherImpl.c
>    http://cr.openjdk.java.net/~chegar/rsocket/webrev.25.3/
>
I don't think we should have the workaround at this level. The native 
methods should be just simple wrappers on rs_read/rs_write. If there is 
no hope of getting the RDMA library fixed then we should configure the 
rsocket to be non-blocking at create and emulate blocking in the 
RdmaSocketChannelImpl.

-Alan.