Tracking bug fix (sun) 6822370 to open JDK 6 release.

[Kelly O'Hair]

http://hg.openjdk.java.net/jdk6/jdk6/hotspot/rev/49bd3de668dc

The current policy is to always use the base CR number in the  
changeset comment,
e.g. not 2185608, but 6822370. The 2* numbers are SubCR's.

-kto

On Mar 10, 2010, at 8:58 AM, Ryan Betts wrote:

> Hello All,
>
> I am trying to determine if (or when) the fix for a specific defect  
> is present in the latest openJDK6 release. I read the project's  
> jdk6/7/hotspot genealogy description and hope to be forgiven for my  
> continued confusion between hsx and jdk6.
>
> Defect: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=2185608
>
> Fix is claimed present in Sun's JDK 6u18 release.
> (http://java.sun.com/javase/6/webnotes/6u18.html defect 6822370).
>
> The relevant openJDK repo revisions appear to be:
> http://hg.openjdk.java.net/hsx/hsx16/baseline/rev/49bd3de668dc (Dec.  
> 1st, 2009)
> http://hg.openjdk.java.net/hsx/hsx16/master/rev/49bd3de668dc (Dec.  
> 5th, 2009)
>
> I downloaded the current openJDK source, and I do not see this  
> change present:
> http://download.java.net/openjdk/jdk6/promoted/b18/openjdk-6-src-b18-16_feb_2010.tar.gz
>
> From the source download:
>
> void Parker::park(bool isAbsolute, jlong time) {
>  // Optional fast-path check:
>  // Return immediately if a permit is available.
>  if (_counter > 0) {
>      _counter = 0 ;
>      return ;
>  }
>
>
> From the annotation:
>
> http://hg.openjdk.java.net/hsx/hsx16/master/annotate/b9408ac1b596/src/os/linux/vm/os_linux.cpp
>
> void Parker::park(bool isAbsolute, jlong time) {
>  // Optional fast-path check:
>  // Return immediately if a permit is available.
>  if (_counter > 0) {
>      _counter = 0 ;
> [dholmes at 982] OrderAccess::fence();
>      return ;
>  }
>
>
> Thank you for any clarification.
> *--Ryan.
>