[8u] RFR for backport of JDK-8170395: Metaspace initialization queries the wrong chunk freelist

Fri Nov 17 08:59:07 UTC 2017

Hi Thomas,

Thanks for the review.

> . I also would prefer that the gtests you omitted should be part of the change (I think before there were gtests, these kind of tests were implemented as file-local static test functions and called I think via whitebox.cpp ? But I wait what others say.

Yes, the test is part of https://bugs.openjdk.java.net/browse/JDK-8169931 . I would be backporting this as well, just that I didn’t want to pollute the current BP.

Regards,

Muthusamy C

From: Thomas Stüfe [mailto:thomas.stuefe at gmail.com] 
Sent: Friday, November 17, 2017 2:21 PM
To: Muthusamy Chinnathambi <muthusamy.chinnathambi at oracle.com>
Cc: HotSpot Open Source Developers <hotspot-dev at openjdk.java.net>; Per Liden <per.liden at oracle.com>; Stefan Karlsson <stefan.karlsson at oracle.com>; Stephen Fitch <stephen.fitch at oracle.com>
Subject: Re: [8u] RFR for backport of JDK-8170395: Metaspace initialization queries the wrong chunk freelist

Hi Muthusamy,

>From the look of it updated webrev looks fine, but I do not have the time to build and check on jdk8u. I also would prefer that the gtests you omitted should be part of the change (I think before there were gtests, these kind of tests were implemented as file-local static test functions and called I think via whitebox.cpp ? But I wait what others say.

Someone from Oracle should confirm this patch. Note that Mikael left Oracle, I took him off the reply list because mail bounce.

Kind Regards, Thomas

On Thu, Nov 16, 2017 at 10:08 AM, Muthusamy Chinnathambi <HYPERLINK "mailto:muthusamy.chinnathambi at oracle.com"muthusamy.chinnathambi at oracle.com> wrote:

Hi Thomas,

Thanks for the review.

> But are there gtests already in jdk8u? I thought gtests came with jdk9? 

> http://openjdk.java.net/jeps/281

> If not, how does http://cr.openjdk.java.net/~mchinnathamb/8170395/webrev.00/test/native/memory/test_spaceManager.cpp.html run or even compile?

Yes, you are right. "test_spaceManager.cpp" should not have been included here. 

Please find the updated webrev at http://cr.openjdk.java.net/~mchinnathamb/8170395/webrev.01/  .

Regards,

Muthusamy C

From: Thomas Stüfe [mailto:HYPERLINK "mailto:thomas.stuefe at gmail.com"thomas.stuefe at gmail.com] 
Sent: Wednesday, November 15, 2017 6:30 PM
To: Muthusamy Chinnathambi <HYPERLINK "mailto:muthusamy.chinnathambi at oracle.com"muthusamy.chinnathambi at oracle.com>
Cc: HotSpot Open Source Developers <HYPERLINK "mailto:hotspot-dev at openjdk.java.net"hotspot-dev at openjdk.java.net>; Mikael Gerdin <HYPERLINK "mailto:mikael.gerdin at oracle.com"mikael.gerdin at oracle.com>; Per Liden <HYPERLINK "mailto:per.liden at oracle.com"per.liden at oracle.com>; Stefan Karlsson <HYPERLINK "mailto:stefan.karlsson at oracle.com"stefan.karlsson at oracle.com>; Stephen Fitch <HYPERLINK "mailto:stephen.fitch at oracle.com"stephen.fitch at oracle.com>
Subject: Re: [8u] RFR for backport of JDK-8170395: Metaspace initialization queries the wrong chunk freelist

Hi Muthusamy,

Looks okay. But are there gtests already in jdk8u? I thought gtests came with jdk9? 

http://openjdk.java.net/jeps/281

If not, how does http://cr.openjdk.java.net/~mchinnathamb/8170395/webrev.00/test/native/memory/test_spaceManager.cpp.html run or even compile?

Thanks, Thomas

On Wed, Nov 15, 2017 at 11:19 AM, Muthusamy Chinnathambi <HYPERLINK "mailto:muthusamy.chinnathambi at oracle.com"muthusamy.chinnathambi at oracle.com> wrote:

Hi,

Could someone please review this backport.

Regards,
Muthusamy C

-----Original Message-----
From: Muthusamy Chinnathambi

Sent: Friday, November 10, 2017 3:27 PM
To: HotSpot Open Source Developers <HYPERLINK "mailto:hotspot-dev at openjdk.java.net"hotspot-dev at openjdk.java.net>
Cc: Mikael Gerdin <HYPERLINK "mailto:mikael.gerdin at oracle.com"mikael.gerdin at oracle.com>
Subject: RE: [8u] RFR for backport of JDK-8170395: Metaspace initialization queries the wrong chunk freelist

Hi,

Can someone please review this.

Thanks!
Muthusamy C

-----Original Message-----
From: Muthusamy Chinnathambi
Sent: Wednesday, November 8, 2017 11:24 AM
To: Thomas Stüfe <HYPERLINK "mailto:thomas.stuefe at gmail.com"thomas.stuefe at gmail.com>
Cc: Mikael Gerdin <HYPERLINK "mailto:mikael.gerdin at oracle.com"mikael.gerdin at oracle.com>; HotSpot Open Source Developers <HYPERLINK "mailto:hotspot-dev at openjdk.java.net"hotspot-dev at openjdk.java.net>
Subject: RE: [8u] RFR for backport of JDK-8170395: Metaspace initialization queries the wrong chunk freelist

Hi Thomas,

>  the webrev link seems to be dead.

Sorry for the trouble.

Please find the corrected link below

http://cr.openjdk.java.net/~mchinnathamb/8170395/webrev.00/

Somehow the line following the link got appended to the previous one leading to a dead link.

Regards,

Muthusamy C

From: Thomas Stüfe [mailto:HYPERLINK "mailto:thomas.stuefe at gmail.com"thomas.stuefe at gmail.com]
Sent: Tuesday, November 7, 2017 8:12 PM
To: Muthusamy Chinnathambi <HYPERLINK "mailto:muthusamy.chinnathambi at oracle.com"muthusamy.chinnathambi at oracle.com>
Cc: HotSpot Open Source Developers <HYPERLINK "mailto:hotspot-dev at openjdk.java.net"hotspot-dev at openjdk.java.net>; Mikael Gerdin <HYPERLINK "mailto:mikael.gerdin at oracle.com"mikael.gerdin at oracle.com>
Subject: Re: [8u] RFR for backport of JDK-8170395: Metaspace initialization queries the wrong chunk freelist

Hi Muthusamy,

the webrev link seems to be dead.

..Thomas

On Tue, Nov 7, 2017 at 10:05 AM, Muthusamy Chinnathambi <HYPERLINK "mailto:HYPERLINK "mailto:muthusamy.chinnathambi at oracle.com"muthusamy.chinnathambi at oracle.com"HYPERLINK "mailto:muthusamy.chinnathambi at oracle.com"muthusamy.chinnathambi at oracle.com> wrote:

Hi,

Please review the backport of bug: "JDK-8170395: Metaspace initialization queries the wrong chunk freelist" to jdk8u-dev

Please note that this is not a clean backport due to new entries in debug.cpp and copyright changes.

Webrev: HYPERLINK "http://cr.openjdk.java.net/~mchinnathamb/8170395/webrev.00/jdk9"HYPERLINK "http://cr.openjdk.java.net/~mchinnathamb/8170395/webrev.00/jdk9"http://cr.openjdk.java.net/~mchinnathamb/8170395/webrev.00/
jdk9 bug: https://bugs.openjdk.java.net/browse/JDK-8170395
Original patch pushed to jdk9: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/2e971a72675a

Test:  Had run jtreg and jprt hotspot testsets.

Regards,
Muthusamy C