Alexey Varlamov wrote:
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.
Is it necessary to override the kernel.jar via command-line? The kernel
class is provided by VM, so it is natural to locate it by VM specific
property file.
Also note hardcoded "default" vmdir.
Agree, "default" should be replaced by some variables(%vmdir% or so), so
it is easier to move VME to another directory.
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
--
Paulex Yang
China Software Development Lab
IBM
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