RFR(XS) 8076311: Java 9 process negative MaxTenuringThreshold in different way than Java 8 (original) (raw)

Dmitry Dmitriev dmitry.dmitriev at oracle.com
Wed Apr 8 07:21:51 UTC 2015

Thank you, David!

About maximum MaxTenuringThreshold - as I see it still exist in JDK 9, but currently it equal to 16(was 15 in JDK 8). Check for inverval is exist in Arguments::check_vm_args_consistency() function.

Regards, Dmitry

----- Original Message ----- From: david.holmes at oracle.com To: dmitry.dmitriev at oracle.com, hotspot-dev at openjdk.java.net Sent: Wednesday, April 8, 2015 9:57:58 AM GMT +03:00 Iraq Subject: Re: RFR(XS) 8076311: Java 9 process negative MaxTenuringThreshold in different way than Java 8

On 8/04/2015 4:40 PM, Dmitry Dmitriev wrote:

Hello,

I am need one more Reviewer. Can someone review this patch? Thanks!

Looks okay. In comparing to JDK 8 I note there is no longer a maximum MaxTenuringThreshold enforced, so presumably only negative values are illegal now.

Thanks, David

Dmitry

----- Original Message ----- From: dmitry.dmitriev at oracle.com To: hotspot-dev at openjdk.java.net Sent: Friday, April 3, 2015 12:50:28 PM GMT +03:00 Iraq Subject: RFR(XS) 8076311: Java 9 process negative MaxTenuringThreshold in different way than Java 8 Hello, Please review this small fix for JDK-8076311. Also, I need a sponsor for this fix, who can push it, because I'm not have a OpenJDK name. Fix for JDK-6521376 add explicit processing of MaxTenuringThreshold XX option. When bad value for MaxTenuringThreshold is passed(e.g. negative value for unsigned option "-XX:MaxTenuringThreshold=-1"), then function print warning and continue execution with default value(0). This behavior differs from Java 8. Java 8 process this situation in common way for unsigned options, i.e. print waring and reports a error. So, I fix Java 9 MaxTenuringThreshold option processing. Also, I add new test case to the test/gc/arguments/TestInitialTenuringThreshold.java to test this situation. Open webrev: http://cr.openjdk.java.net/~ctornqvi/webrev/8076311/webrev.00/ <http://cr.openjdk.java.net/%7Ectornqvi/webrev/8076311/webrev.00/> JBS bug: https://bugs.openjdk.java.net/browse/JDK-8076311 Tested: JPRT Thank you, Dmitry

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