RFR 4947890 : Minimize JNI upcalls in system-properties initialization

[coleen.phillimore at oracle.com]

Hi Roger, the VM changes to this look great to me.

I think you need a CSR to remove JVM_InitProperties though.

Thanks,
Coleen

On 11/13/18 10:59 AM, Roger Riggs wrote:
> Please review a re-implementation of the initialization of System 
> properties
> moving some functions from native to Java.
>
> The upcalls from native to java for each property are replaced by a 
> mechanism
> to gather the platform, VM and command line properties and return them
> from a single JNI call.  The creation of the Properties instance and 
> applying
> command line overrides is handled in Java instead of native.
>
> The JVM_initProperties interface in Hotspot is replaced by 
> JVM_getProperties.
>
> Webrev:
>   http://cr.openjdk.java.net/~rriggs/webrev-props-only-raw/
>
> Issue:
>   https://bugs.openjdk.java.net/browse/JDK-4947890
>
> Thanks, Roger
>