tcljava-user

[tcljava-user] tclblend init error on linux

[Yuji I. <yu-...@se...>]

Hi,

I am having a trouble with installing tclBlend 1.3.2 with thread2.6.2 and
tcl8.4.11
on Linux (Fedora core 4).  It seems initializing tclBlend extension threw an
exception.  Does anybody suggest how I can fix this problem? Thanks.

-yuji

---
% package require java
TCLBLEND_DEBUG: Tclblend_Init
TCLBLEND_DEBUG: CLASSPATH is
"/usr/local/lib/tcljava1.3.2/tcljava.jar:/usr/local/lib/tcljava1.3.2/tclblen
d.jar:/home/mainte/j2sdk1.4.2_08/jre/lib/rt.jar"
TCLBLEND_DEBUG: called JavaSetupJava
TCLBLEND_DEBUG: JavaInitEnv for JDK1_2 JVM
TCLBLEND_DEBUG: No JVM, creating one
TCLBLEND_DEBUG: CLASSPATH is
"-Djava.class.path=/usr/local/lib/tcljava1.3.2/tcljava.jar:/usr/local/lib/tc
ljava1.3.2/tclblend.jar:/home/mainte/j2sdk1.4.2_08/jre/lib/rt.jar"
TCLBLEND_DEBUG: JVM options
 vm_args.version: 10002
 vm_args.nOptions: 1
 options[0].optionString =
'-Djava.class.path=/usr/local/lib/tcljava1.3.2/tcljava.jar:/usr/local/lib/tc
ljava1.3.2/tclblend.jar:/home/mainte/j2sdk1.4.2_08/jre/lib/rt.jar',
options.[0].extraInfo = 'NULL'
TCLBLEND_DEBUG: JNI_CreateJavaVM
TCLBLEND_DEBUG: JavaInitEnv returning successfully
TCLBLEND_DEBUG: initializing jcache
TCLBLEND_DEBUG: JavaSetupJava returning successfully
TCLBLEND_DEBUG: Now to create Interp object
TCLBLEND_DEBUG: Checking Tcl_GetNameOfExecutable()
TCLBLEND_DEBUG: Executable name is already known
TCLBLEND_DEBUG: called JavaInitBlend
Exception in thread "main" java.lang.NullPointerException: Invalid
interpreter.
	at tcl.lang.Interp.getCommand(Native Method)
	at tcl.lang.BlendExtension.init(BlendExtension.java:39)
TCLBLEND_DEBUG: Exception in init() method
TCLBLEND_DEBUG: JavaInitBlend returning
TCLBLEND_DEBUG: Tclblend_Init finished
TCLBLEND_DEBUG: JavaInitBlend returned TCL_ERROR
"XpUtils::iload -d /usr/local/lib/tcljava1.3.2 tclblend" failed:
java.lang.NullPointerException: Invalid interpreter. % exit
TCLBLEND_DEBUG: called FreeJavaCache
TCLBLEND_DEBUG: called DestroyJVM

Re: [tcljava-user] tclblend init error on linux

[Mo D. <md...@un...>]

On Tue, 2 Aug 2005 16:40:43 +0900
"Yuji Ishikawa" <yu-...@se...> wrote:

> Hi,
> 
> I am having a trouble with installing tclBlend 1.3.2 with thread2.6.2 and
> tcl8.4.11
> on Linux (Fedora core 4).  It seems initializing tclBlend extension threw an
> exception.  Does anybody suggest how I can fix this problem? Thanks.
...
> TCLBLEND_DEBUG: called JavaInitBlend
> Exception in thread "main" java.lang.NullPointerException: Invalid
> interpreter.
> 	at tcl.lang.Interp.getCommand(Native Method)
> 	at tcl.lang.BlendExtension.init(BlendExtension.java:39)

Humm, strange indeed. Could you check that Tcl is passing its own
regression tests before moving on to Tcl Blend? In the Tcl build
dir run "make test" and then do the same thing in the thread build
dir. If lots of test fail then there may be something more basic wrong
with the Tcl build under Fedora. This is a new distro with a new
compiler so it is best to start checking the basics before looking deeper
into what is going on in Tcl Blend.

As far as the Tcl Blend error goes, it is being raised in 
Java_tcl_lang_Interp_getResult defined in javaInterp.c.
I see some test cases that generate this error, but I
don't think they are exactly the same as what is going on
here.

(from javaInterp.test)

test javaInterp-6.1 {Java_tcl_lang_Interp_getResult} {
    set i [java::new tcl.lang.Interp]
    $i dispose
     list [catch {$i getResult} msg] $msg
} {1 {java.lang.NullPointerException: Invalid interpreter.}}

Also, where did you get this j2sdk1.4.2_08 release from?
And this is a 32 bit Intel type machine you are using?

cheers
Mo DeJong