Backporting an AsyncGetCallTrace patch to OpenJDK6

[Andrew John Hughes]

2008/9/12 Martin Buchholz <martinrb at google.com>:
> [+doko, who might be interested in this discussion on jdk6-dev at openjdk.java.net]
>
> So...how come icedtea 6 (on Ubuntu Hardy) reports
> a hotspot version number that is not an actual hotspot version number?
> Should be "OpenJDK 64-Bit Server VM (build 10.0-b19, mixed mode)"
>
> (martinrb at spraggett) ~ $ /usr/lib/jvm/java-6-openjdk/bin/java -version
> java version "1.6.0_0"
> OpenJDK  Runtime Environment (build 1.6.0_0-b11)
> OpenJDK 64-Bit Server VM (build 1.6.0_0-b11, mixed mode)
> (martinrb at spraggett) ~ $ dpkg -S /usr/lib/jvm/java-6-openjdk/bin/java
> openjdk-6-jre-headless: /usr/lib/jvm/java-6-openjdk/bin/java
> (martinrb at spraggett) ~ $ aptitude show openjdk-6-jre-headless
> Package: openjdk-6-jre-headless
> Version: 6b11-2ubuntu2
> Maintainer: Ubuntu MOTU Developers <ubuntu-motu at lists.ubuntu.com>
> ...
>
> Martin
>
> On Thu, Sep 11, 2008 at 15:10, Andrew John Hughes
> <gnu_andrew at member.fsf.org> wrote:
>> 2008/9/11 Andrew John Hughes <gnu_andrew at member.fsf.org>:
>>> 2008/9/11 Daniel D. Daugherty <Daniel.Daugherty at sun.com>:
>>>> Andrew John Hughes wrote:
>>>>
>>>> FWIW, I don't see any change to the HS_ version numbers in our
>>>> patch to switch from OpenJDK6 b11's to OpenJDK7 b24's HotSpot.
>>>> Given OpenJDK6 was derived from something like b20, I guess this is
>>>> not that strange.
>>>>
>>>> JDK7-B24 has the following values:
>>>>
>>>>     HS_MAJOR_VER=12
>>>>     HS_MINOR_VER=0
>>>>     HS_BUILD_NUMBER=01
>>>>
>>>> Joe stated earlier in this thread that OpenJDK6 is based on
>>>> HSX-10 so its values should not be the same. For 1.6.0_07,
>>>> I see:
>>>>
>>>>     HS_MAJOR_VER=10
>>>>     HS_MINOR_VER=0
>>>>     HS_BUILD_NUMBER=23
>>>>
>>>> Dan
>>>>
>>>>
>>>>
>>>
>>> Hmmm...
>>> Then either Gary's HotSpot patch doesn't update that file or OpenJDK6
>>> is not based on the same as this 1.6.0_07 thing you mention.
>>> I'll try and have a closer look later.
>>> --
>>> Andrew :-)
>>>
>>> Support Free Java!
>>> Contribute to GNU Classpath and the OpenJDK
>>> http://www.gnu.org/software/classpath
>>> http://openjdk.java.net
>>>
>>> PGP Key: 94EFD9D8 (http://subkeys.pgp.net)
>>> Fingerprint: F8EF F1EA 401E 2E60 15FA 7927 142C 2591 94EF D9D8
>>>
>>
>> IcedTea6 contains:
>>
>> HS_MAJOR_VER=10
>> HS_MINOR_VER=0
>> HS_BUILD_NUMBER=19
>>
>> IcedTea/b33 contains:
>>
>> HS_MAJOR_VER=14
>> HS_MINOR_VER=0
>> HS_BUILD_NUMBER=01
>>
>> icedtea-hotspot-6b11-7b24.patch only updates the src code and not
>> make/hotspot_version
>> so it's actually worryingly building a different version of HotSpot
>> from the one it thinks it is.
>> It will actually be 12-0-01 as you state, but will report 10-0-19.
>>
>> Overall, it would be better to always build against the most recent
>> stable HotSpot tree if possible
>> rather than the one provided by the build drop.  Do we know what the
>> most stable would be?
>> --
>> Andrew :-)
>>
>> Support Free Java!
>> Contribute to GNU Classpath and the OpenJDK
>> http://www.gnu.org/software/classpath
>> http://openjdk.java.net
>>
>> PGP Key: 94EFD9D8 (http://subkeys.pgp.net)
>> Fingerprint: F8EF F1EA 401E 2E60 15FA 7927 142C 2591 94EF D9D8
>>
>

All IcedTea builds are like this:

$ java -version
java version "1.6.0_0"
OpenJDK  Runtime Environment (build 1.6.0_0-b11)
OpenJDK 64-Bit Server VM (build 1.6.0_0-b11, mixed mode)

$ ~/builder/icedtea/openjdk/build/linux-amd64/bin/java -version
java version "1.7.0_0"
IcedTea Runtime Environment (build 1.7.0_0-b33)
OpenJDK 64-Bit Server VM (build 1.7.0_0-b33, mixed mode)

-- 
Andrew :-)

Support Free Java!
Contribute to GNU Classpath and the OpenJDK
http://www.gnu.org/software/classpath
http://openjdk.java.net

PGP Key: 94EFD9D8 (http://subkeys.pgp.net)
Fingerprint: F8EF F1EA 401E 2E60 15FA 7927 142C 2591 94EF D9D8