RFR 8187631 : Refactor FileDescriptor close implementation

[Brian Burkhalter]

Hi Roger,

I think that this looks fine.

Thanks,

Brian

On Sep 18, 2017, at 12:28 PM, Roger Riggs <Roger.Riggs at Oracle.com> wrote:

> Please review refactoring
> the handling of closing of files in FileInputStream, FileOutputStream, RandomAccessFile,
> and FileChannelImpl and related native code.
> 
> The refactoring enables a future improvement to use the cleaner to close raw fds
> when the FileDescriptors becomes unreferenced.