8154077: (fs) Reduce number of file system classes loaded during startup

[Brian Burkhalter]

On Apr 12, 2016, at 7:07 AM, Alan Bateman <Alan.Bateman at oracle.com> wrote:

> With jimage using the file system and channel APIs then there are more NIO classes loaded during startup that previously. Brian Burkhalter and I chatted briefly about it and there are a number of things that we can do. The following is a first installation to improve isRegularFile/isDirectory/exists for the common "no options" cases:
> 
>  http://cr.openjdk.java.net/~alanb/8154077/webrev/

This looks fine to me.

> This is the Unix provider only for now, we need to follow-up on with some Windows specific changes but this can be done independently.

I added https://bugs.openjdk.java.net/browse/JDK-8154100 to track the Windows-specific case and linked it to the present issue.

Brian
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