2006/9/11, Geir Magnusson Jr. <[EMAIL PROTECTED]>:
Evgueni Brevnov wrote:
> On 9/9/06, Geir Magnusson Jr. <[EMAIL PROTECTED]> wrote:
>> There seems to be no easy solution, other than parse LD_LIBRARY_PATH or
>> PATH...
>
> Is vmcore.dll (now harmonyvm.dll) and kernel.jar should always reside
> in one directory?
I was thinking about this for packaging - that way you can have :
jre/
bin/
j9/
drlvm/
and setup a symlink if you wish.
if we have kernel.jar in jre/lib/boot as we do now, it's must less
convenient and probably error prone to switch back and forth.
> If yes then we can take vmcore.dll base path as a
> location of kerenel.jar.
Sure - where will you get that? and what do you w/ .so's in unix? I've
come to the conclusion that the only way will be to manually run the
PATH (win) and LD_LIBRARY_PATH (linux)
IIUC, j9 does this in astonishingly simple way - it just specifies
"-Xbootclasspath/p:%LAUNCHER_HOME%/default/luni-kernel.jar" in the
"<vmdir>/harmonyvm.properties" file, and the launcher does the rest.
Namely, it automatically reads that file, replaces %LAUNCHER_HOME%
with actual location and feeds extra arguments to VM among user's
ones.
This solution looks sufficient for now, but it seems to be only
partial: it does not work for pure Invocation API usecase. Besides,
those hardcoded arguments to VM appear confusing in some cases - e.g.
it is impossible to override kernel.jar via command-line. Also note
hardcoded "default" vmdir.
As for the .so locations, I'm not sure if there is portable solution
(parsing LD_LIBRARY_PATH looks error-prone). Maybe better solution
would be leave this to user - for setting JAVA_HOME or such...
--
Alexey
geir
>
>
>>
>> geir
>>
>> Geir Magnusson Jr. wrote:
>> > I'll figure this out myself if I don't get a quick answer, but I think
>> > we should put the DRLVM kernel classes jar(s) in the same directory as
>> > the rest of the DRLVM artifacts so that it's easy to switch between VMs
>> > using the launcher. (J9 does this).
>> >
>> > How does DRLVM decide where to look?
>> >
>> > (I'm re-doing the DRLVM build to finish integrating the launcher
>> > properly, and figure that a nice thing to add is a DRLVM-snapshot that
>> > just drops into classlib/deploy/jdk/jre/bin the same way J9 does for
>> > developers....
>> >
>> > geir
>> >
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