RFR [XS] : 8210961: [aix] enhance list of environment variables reported in error log file on AIX

[Baesken, Matthias]

> You mean, starting 32bit AIX binaries from our 64bit jvm? Is this even
> possible?


Yes , it is possible to  start  32bit executables  (e.g. via ProcessBuilder)  from Java   on AIX .
Would be bad if it would not be possible -  because a lot  of  system  commands (like /usr/bin/pwd)  are 32bit .
At least this is what  dump  shows we when looking at the  executables  in  /usr/bin   on an AIX 7.1   server .


Best regards, Matthias



> -----Original Message-----
> From: Thomas Stüfe <thomas.stuefe at gmail.com>
> Sent: Freitag, 21. September 2018 21:08
> To: Baesken, Matthias <matthias.baesken at sap.com>
> Cc: Volker Simonis <volker.simonis at gmail.com>; HotSpot Open Source
> Developers <hotspot-dev at openjdk.java.net>
> Subject: Re: RFR [XS] : 8210961: [aix] enhance list of environment variables
> reported in error log file on AIX
> 
> Hi Matthias,
> 
> On Fri, Sep 21, 2018 at 8:54 AM, Baesken, Matthias
> <matthias.baesken at sap.com> wrote:
> > Hi Volker, sure  the LDR_PRELOAD might not be so important any more
> these days .
> > However it might be  fine to have it included in the list of environment
> variables for the sake of completeness ( in it is maybe of interest in cases
> where we start
> >    other  (32bit) binaries  from java ).
> >
> 
> You mean, starting 32bit AIX binaries from our 64bit jvm? Is this even
> possible?
> 
> Best Regards, Thomas
> 
> > Best regards, Matthias
> >
> >
> >
> >> -----Original Message-----
> >> From: Volker Simonis <volker.simonis at gmail.com>
> >> Sent: Donnerstag, 20. September 2018 17:41
> >> To: Baesken, Matthias <matthias.baesken at sap.com>
> >> Cc: HotSpot Open Source Developers <hotspot-dev at openjdk.java.net>
> >> Subject: Re: RFR [XS] : 8210961: [aix] enhance list of environment
> variables
> >> reported in error log file on AIX
> >>
> >> Hi Matthias,
> >>
> >> looks good!
> >>
> >> Do we really need LDR_PRELOAD? The documentation you've linked
> >> mentions that it is only used for 32-bit process which we don't
> >> support anyway.
> >>
> >> I think it may be better to leave it out completely, otherwise people
> >> may get confused if they see that LDR_PRELOAD was defined.
> >>
> >> Thank you and best regards,
> >> Volker
> >>
> >> On Thu, Sep 20, 2018 at 2:13 PM Baesken, Matthias
> >> <matthias.baesken at sap.com> wrote:
> >> >
> >> > Hello,  Please review this small  enhancement.
> >> >
> >> > It adds  these  AIX-related  environment variables to the already existing
> list
> >> of environment variables that should be reported in error log file (hs_err
> file)
> >> :
> >> >
> >> > LIBPATH  :   environment variable to locate shared libraries  ,  see
> >>
> https://www.ibm.com/support/knowledgecenter/en/SSYKE2_7.1.0/com.ib
> >> m.java.aix.71.doc/user/setlpath.html
> >> >
> >> > LDR_PRELOAD / LDR_PRELOAD64  :  similar to LD_PRELOAD on Linux ,
> see
> >>
> https://www.ibm.com/support/knowledgecenter/en/ssw_aix_72/com.ibm.
> >> aix.performance/preloading_shared_libraries.htm
> >> >
> >> >
> >> > http://cr.openjdk.java.net/~mbaesken/webrevs/8210961/
> >> >
> >> > bug :  https://bugs.openjdk.java.net/browse/JDK-8210961
> >> >
> >> >
> >> > Thanks, Matthias