On 12/11/2016 05:18 AM, Alan Bateman wrote:
On 10/12/2016 15:21, David M. Lloyd wrote:
Would it be possible to have all available selector provider
implementation classes listed in a "provides java.nio.channels.spi
with ..." section of java.base's module descriptor? My use case is as
follows:
Our I/O library (XNIO) relies on the ability to detect and use
different available selector providers for different purposes in
different circumstances (often to provide alternatives in the event of
platform-specific behavior problems, or to prefer lighter providers
over heavier ones in certain situations). Right now we directly use
reflection to seek out specific named classes. However, it would be
much better if we could instead use a service loader to discover all
available implementations, which would free us from having to use
reflection for this purpose and also avoid lots of pointless probing.
Today you need to have --add-exports=java.base/sun.nio.ch=xxx which is
definitely not ideal.
Maybe there's another solution to this problem as well; suggestions
welcome.
I don't think we've ever come across alternative implementations of
SelectorProvider, are these complete implementations?
I'm not implementing SelectorProvider, I just want access to all the
possible implementations that are available in the current JDK so we can
select among them on a case-by-case basis.
Are you attempting
to wrap the default implementation - I ask because there isn't anything
in the service type (SelectorProvider in this example) that is useful
for doing selection.
Except for the name of the class, which is what we select by today.
--
- DML
