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

Mikhailo Seledtsov mikhailo.seledtsov at oracle.com
Mon Dec 15 18:43:16 UTC 2014

Hi Calvin,

  The changes look fine to me, except for one item.

output.shouldContain("is not large enough.\nEither don't specify the -XX:MaxMetaspaceSize=<size>\nor increase the size to at least");
Please make sure the match with  "\n" works well on Windows as well as on Linux. Alternatively, you could expand this to three matches, to make the test more robust:
	output.shouldContain("is not large enough");
	output.shouldContain("Either don't specify the -XX:MaxMetaspaceSize=");
	output.shouldContain("or increase the size to at least");

If you choose to make this change, no need to re-post the webrev.

Thank you,

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

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