[patch] update the jamvm patch for at least 2.3.10

[Xerxes Rånby]

2013-07-08 10:21, Andrew Hughes skrev:
> ----- Original Message -----
>> In the 2.3.10 release, the jamvm patch needs an update. Didn't check the
>> other
>> releases.  Updated patch attached.
>>
>>   Matthias
>>
>>
> 
> Any idea why these changes are needed?
> 

The remove-sun.misc.Perf-debug-code.patch was needed for use of OpenJDK 7 & 8 in combination with JamVM prior to 2012-12-28.
The more recent JamVM versions have implemented a workaround:
Robert's git commit explain:

http://git.berlios.de/cgi-bin/cgit.cgi/jamvm/commit/?id=e8dbdac844c3837f3f697e34dcf7b7c6506158ce
"The OpenJDK 7 and OpenJDK 8 sources contain various calls to sun.misc.Perf for performance profiling of class-loading.
Whether this is left-over debug code or is intentional is not clear.

However, this causes JamVM to fail as it doesn't implement the native methods for sun.misc.Perf.
IcedTea 7 contains a patch to remove these calls to enable JamVM to run.
But this doesn't help when running with "vanilla" OpenJDK 8, which I'm using for the JSR 292 work (no IcedTea version for OpenJDK 8 exists, that I'm aware off).

Hacking the sources to remove these calls everytime I get a new version is a huge pain-in-the-ass.
So this is a dummy implementation, sufficient to get the sources to run without hacking them.
Signed-off-by: Robert Lougher <rob at jamvm.org.uk>"


2013-07-01 15:22, Xerxes Rånby skrev:> 2013-07-01 14:57, Matthias Klose skrev:
>> In the 2.3.10 release, the jamvm patch needs an update. Didn't check the other releases.  Updated patch attached.
>>
>> Matthias
>>
>
> Looks OK,
>
> We have one option and that is to update JamVM to match the version used in 2.4.*,
> http://icedtea.classpath.org/hg/release/icedtea7-2.4/rev/933d082ec889
> if we update JamVM then we may drop this remove-sun.misc.Perf-debug-code.patch for the 2.3.10 branch as well.
>

Cheers
Xerxes