OpenJDK 8 and fastdebug

[Henri Gomez]

I'll look into build logs (thanks Jenkins)

BTW, I didn't see OSX or Darwin support into hsdis Makefile. 

Le 20 avr. 2012 à 17:08, Volker Simonis <volker.simonis at gmail.com> a écrit :

> Somehow you managed to build a "fastdebug" JDK with a still optimized
> HotSpot VM:
> 
> OpenJDK 64-Bit Server VM (build 24.0-b04, mixed mode)
> 
> For -XX:+PrintOptoAssembly to work, you need a debug or fastdebug VM:
> 
> OpenJDK 64-Bit Server VM (build 22.0-b01-internal-jvmg, mixed mode)
> 
> You can easily build it from hotspot/src/make with these commands
> 
> ALT_BOOTDIR=<java_7_directory>
> ALT_OUTPUTDIR=<your_favourite_output_dir> make jvmg
> ALT_BOOTDIR=<java_7_directory>
> ALT_OUTPUTDIR=<your_favourite_output_dir> make fastdebug
> 
> for the debug and fastdebug case.
> 
> Or you can try to find out why SKIP_FASTDEBUG_BUILD=false hasn't been
> properly propagated into the HotSpot make file:)
> 
> Regards,
> Volker
> 
> On Fri, Apr 20, 2012 at 1:58 PM, Henri Gomez <henri.gomez at gmail.com> wrote:
>> Well, it seems my build is not fully debug enabled :
>> 
>> java -version -XX:+PrintOptoAssembly
>> openjdk version "1.8.0-jdk8-b30-x64-lambda-fastdebug"
>> OpenJDK Runtime Environment (build 1.8.0-jdk8-b30-x64-lambda-fastdebug-20120420)
>> OpenJDK 64-Bit Server VM (build 24.0-b04, mixed mode)
>> 
>> ---
>> 
>> java -XX:+PrintOptoAssembly
>> Unrecognized VM option 'PrintOptoAssembly'
>> Error: Could not create the Java Virtual Machine.
>> Error: A fatal exception has occurred. Program will exit.
>> 
>> ---
>> 
>> java -XX:+UnlockDiagnosticVMOptions -XX:+PrintAssembly
>> OpenJDK 64-Bit Server VM warning: PrintAssembly is enabled; turning on
>> DebugNonSafepoints to gain additional output
>> Could not load hsdis-amd64.dylib; library not loadable; PrintAssembly
>> is disabled
>> Syntaxe : java [-options] class [args...]
>> 
>> Hum ;-(
>> 
>> 2012/4/20 Remi Forax <forax at univ-mlv.fr>:
>>> Just hsdis, but maybe the one from Graal that use a better assembler syntax.
>>> 
>>> Rémi
>>> 
>>> Sent from my Phone
>>> 
>>> ----- Reply message -----
>>> From: "Krystal Mok" <rednaxelafx at gmail.com>
>>> To: "Remi Forax" <forax at univ-mlv.fr>
>>> Cc: <jdk8-dev at openjdk.java.net>
>>> Subject: OpenJDK 8 and fastdebug
>>> Date: Fri, Apr 20, 2012 09:44
>>> I see. That makes sense.BTW, is it hsdis, or is there a new disassembler plugin?
>>> 
>>> - Kris
>>> 
>>> On Fri, Apr 20, 2012 at 3:35 PM, Remi Forax <forax at univ-mlv.fr> wrote:
>>> 
>>> The idea is to bundle jadis with the fast debug VM.
>>> 
>>> Rémi
>>> 
>>> Sent from my Phone
>>> 
>>> 
>>> ----- Reply message -----
>>> From: "Krystal Mok" <rednaxelafx at gmail.com>
>>> To: "Rémi Forax" <forax at univ-mlv.fr>
>>> 
>>> Cc: <jdk8-dev at openjdk.java.net>
>>> Subject: OpenJDK 8 and fastdebug
>>> Date: Fri, Apr 20, 2012 08:55
>>> 
>>> 
>>> PrintAssembly is available in product builds, too. You'll just need to set -XX:+UnlockDiagnosticVMOptions before setting -XX:+PrintAssembly.
>>> 
>>> On the other hand, -XX:+PrintOptoAssembly is only available in a debug build.
>>> 
>>> - Kris
>>> 
>>> On Fri, Apr 20, 2012 at 2:00 PM, Rémi Forax <forax at univ-mlv.fr> wrote:
>>> 
>>> 
>>> On 04/20/2012 07:28 AM, Henri Gomez wrote:
>>> 
>>> 
>>> Just set
>>> 
>>> 
>>> 
>>> SKIP_FASTDEBUG_BUILD=false
>>> 
>>> 
>>> 
>>> (I don't know what role DEBUG_NAME plays)
>>> 
>>> 
>>> 
>>> 
>>> 
>>> 
>>> Relative question, how can I check a java exec is in fastdebug mode ?
>>> 
>>> 
>>> 
>>> 
>>> Check "java -version", it will show it is fastdebug.
>>> 
>>> 
>>> It seems good (http://openjdk-osx-build.googlecode.com/files/OpenJDK-OSX-8-x64-lambda-fastdebug-jdk-b30-20120420.dmg)
>>> 
>>> 
>>> 
>>> 
>>> 
>>> openjdk version "1.8.0-jdk8-b30-x64-lambda-fastdebug"
>>> 
>>> OpenJDK Runtime Environment (build 1.8.0-jdk8-b30-x64-lambda-fastdebug-20120420)
>>> 
>>> OpenJDK 64-Bit Server VM (build 24.0-b04, mixed mode)
>>> 
>>> 
>>> 
>>> Thanks
>>> 
>>> 
>>> 
>>> 
>>> Many thanks, Henry,
>>> 
>>> now people can use -XX:+PrintAssembly :)
>>> 
>>> 
>>> 
>>> Rémi