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From "LvJimmy´╝îJing" <firep...@gmail.com>
Subject Re: [jira] Created: (HARMONY-2321) [classlib] Launcher fails to find properties location when bad -Djava.home is specified on the command line
Date Sun, 29 Apr 2007 08:53:34 GMT
Agreed, it is strange that Harmony need correct java.home property to
execute as it is not necessary for RI.

2007/4/29, Tony Wu <wuyuehao@gmail.com>:
> Hi all,
> I agree with Gregory that this system is wrong, but I think the root
> cause is not in the launcher. If we ignore the java.home passed on cmd
> line in launcher and pass the executable path to vm as java.home, we
> have to set the property after vm has been created(this is one
> solution) otherwise we lose the feature to set this property.(RI could
> print correct (System.getProperty("java.home")) in this case)
>
> IMO, VM should not depend on the system property "java.home" to load
> its own libraries. So, another solution is, pass executable path to vm
> in another manner instead of using java.home.
>
> I'm not sure that which one is better, what's your opinion and do you
> have any suggestion on this problem?
>

Either is OK IMHO, just behave as RI does.

> On 11/25/06, Gregory Shimansky (JIRA) <jira@apache.org> wrote:
> > [classlib] Launcher fails to find properties location when bad -Djava.home is specified
on the command line
> > -----------------------------------------------------------------------------------------------------------
> >
> >                 Key: HARMONY-2321
> >                 URL: http://issues.apache.org/jira/browse/HARMONY-2321
> >             Project: Harmony
> >          Issue Type: Bug
> >          Components: Classlib
> >         Environment: All
> >            Reporter: Gregory Shimansky
> >
> >
> > A short investigation shows that launcher parses -Djava.home passed on the command
line. Later on while classlib is initialized the function readClassPathFromPropertiesFile
calls properties_load with file name formed as ${java.home}/lib/boot/bootclasspath.properties.
If this file is not found and properties_load, then no value is assigned to org.apache.harmony.boot.class.path.
> >
> > I think this system is wrong. The launcher should not pay attention to java.home
passed on the command line. The location should be found from the executable path probably.
RI doesn't crash or fail its boot classes when I specify bad -Djava.home on the command line.
> >
> >
> > --
> > This message is automatically generated by JIRA.
> > -
> > If you think it was sent incorrectly contact one of the administrators: http://issues.apache.org/jira/secure/Administrators.jspa
> > -
> > For more information on JIRA, see: http://www.atlassian.com/software/jira
> >
> >
> >
>
>
> --
> Tony Wu
> China Software Development Lab, IBM
>


-- 

Best Regards!

Jimmy, Jing Lv
China Software Development Lab, IBM

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