RFR(XS): 8065050: vm crashes during CDS dump when very small SharedMiscDataSize is specified

Mikhailo Seledtsov mikhailo.seledtsov at oracle.com
Tue Dec 2 01:59:57 UTC 2014

Test changes look good.

Thank you,

On 12/1/2014 12:10 PM, Calvin Cheung wrote:
> JBS: https://bugs.openjdk.java.net/browse/JDK-8065050
> Adding more checks on the SharedMiscDataSize, ShareReadOnlySize, and 
> SharedReadWriteSize.
> For the SharedMiscDataSize, it is based on 
> MetaspaceShared::generate_vtable_methods(). Similar to what was done 
> for the SharedMiscCodeSize.
> For the ShareReadOnlySize and SharedReadWriteSize, I'm checking if 
> they are at least the default size.
> I think it's reasonable to enforce the ro and rw sizes to be at least 
> the default size. A default dump of CDS archive requires >8M of ro 
> space and >11M of rw space.
> webrev:
>     http://cr.openjdk.java.net/~ccheung/8065050/webrev/
> tests:
>     ran the testcase via jtreg on linux_x64 and windows_x64
>     JPRT
> thanks,
> Calvin

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