RFR: 8209120: Archive the Integer.IntegerCache (original) (raw)

Claes Redestad claes.redestad at oracle.com
Mon Aug 13 14:16:14 UTC 2018

Hi Jiangli,

On 2018-08-10 19:15, Jiangli Zhou wrote:

Hi Claes,

The updated Integer.java looks good. The test also looks good to me. I'd suggest adding some checks in CheckIntegerCacheApp test for the cached Integers using WhiteBox API, WhiteBox.isShared(object) to make sure that they are archived. Checking all cached Integers is probably too excessive and unnecessary. Select a few values within [-128, 127] range would be good enough, I think. As archived java heap data mapping may fail in some cases at runtime, and there is no need to continue the test execution when that happens as it would not exercise any of the archived java objects. The following can be done at the beginning of CheckIntegerCacheApp: WhiteBox wb = WhiteBox.getWhiteBox(); if (!wb.areOpenArchiveHeapObjectsMapped()) { return; }

thanks for reviewing!

I've added WhiteBox testing as suggested:

http://cr.openjdk.java.net/~redestad/8209120/open.03/

/Claes

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