RFR: 8064814: Print more helpful error message when getting OOM due to low Java Heap base when running with CompressedOops

[Poonam Bajaj Parhar]

Hello,

Could I get reviews for this small change, please!
http://cr.openjdk.java.net/~poonam/8064814/webrev.00/

Thanks,
Poonam

On 5/5/2016 6:49 AM, poonam.bajaj at oracle.com wrote:
> Hello,
>
> Please review this simple fix for:
> Bug 8064814 <https://bugs.openjdk.java.net/browse/JDK-8064814> : Print
> more helpful error message when getting OOM due to low Java Heap base
> when running with CompressedOops
> Webrev: http://cr.openjdk.java.net/~poonam/8064814/webrev.00/
>
> Problem: We can encounter out-of-native-heap errors when the Java heap
> is either placed in the first 4gb or 32gb address space when running
> with the CompressedOops. The Java Heap base in these cases limits and
> blocks the growth of the native heap.
>
> Fix: Print better error message giving an indication that the
> out-of-native heap error may be due to the use of CompressedOops and how
> it can be resolved. These changes also check if the process is running
> in 32-bit mode and then print the appropriate 32-bit or 64-bit related
> suggestions.
>
> Testing: Manual testing
>
> Thanks,
> Poonam
>