RFR 4947890 : Minimize JNI upcalls in system-properties initialization

[Roger Riggs]

Hi Coleen,

yes, the changes to the jvm.h functions should have a CSR.
I created a CSR to track the interface change.

   https://bugs.openjdk.java.net/browse/JDK-8213895

Thanks, Roger


On 11/14/2018 11:22 AM, coleen.phillimore at oracle.com wrote:
>
> 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
>>
>