RFR(s): 8067187: -XX:MaxMetaspaceSize=20m -Xshare:dump caused JVM to crash

[Jiangli Zhou]

Hi Calvin,

Would it better to do the size check in Metaspace::global_initialize() 
along with the rest of the shared space size checks?

Thanks,
Jiangli

On 12/12/2014 12:42 PM, Calvin Cheung wrote:
> JBS: https://bugs.openjdk.java.net/browse/JDK-8067187
>
> This fix is to add a check on the MaxMetaspaceSize when performing CDS 
> archive dumping.
>
> With the fix, instead of a crash, it will print and error message like 
> the following and exit:
>
> Java HotSpot(TM) 64-Bit Server VM warning:
> The MaxMetaspaceSize of 20971520 bytes is not large enough.
> Either don't specify the -XX:MaxMetaspaceSize=<size>
> or increase the size to at least 33554432.
>
> Tested manually via command line and jtreg test on the new test.
>
> webrev: http://cr.openjdk.java.net/~ccheung/8067187/webrev/
>
> thanks,
> Calvin