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-   -   WebSphere JVM Access Violation Problem running Java program that calls methods in a Windows C++ DLL via a JNI wrapper....... (http://www.velocityreviews.com/forums/t302701-websphere-jvm-access-violation-problem-running-java-program-that-calls-methods-in-a-windows-c-dll-via-a-jni-wrapper.html)

adgarcia13 06-27-2006 05:00 PM

WebSphere JVM Access Violation Problem running Java program that calls methods in a Windows C++ DLL via a JNI wrapper.......
 
Greetings,

Am having a problem running an Eclipse Java program in the IDE on
Windows XP that calls Windows C++ methods in a Windows DLL via JNI. The
JNI wrapper was developed using the SUN JVM. When we run the java
program using the SUN JVM it all works well; when we attempt this using
the JVM available with IBM Websphere 6.0.2.5 we have the following
problem when we attempted to make the first C++ init method call:

JVMDG217: Dump Handler is Processing Signal 11 - Please Wait.
JVMDG303: JVM Requesting Java core file
JVMDG304: Java core file written to
C:\EclipseWorkspace\AppName\javacore.20060626.0955 14.392.txt

and in the dump file found the following:

NULL
------------------------------------------------------------------------
0SECTION TITLE subcomponent dump routine
NULL ===============================
1TISIGINFO signal 11 received
1TIDATETIME Date: 2006/06/26 at 09:55:32
1TIFILENAME Javacore filename:
D:\EclipseWorkspace\SQLParser\javacore.20060626.09 5532.392.txt
NULL
------------------------------------------------------------------------
0SECTION XHPI subcomponent dump routine
NULL ==============================
1XHEXCPCODE Exception code: C0000005 Access Violation
1XHEXCPADDRESS Fault address: 1001F1C3 01:0001E1C3
1XHEXCPMODULE Fault module:
D:\IBM\WebSphere\AppServer\_jvm\jre\bin\classic\jv m.dll
NULL
1XHREGISTERS Registers:
2XHREGISTER EAX:00000000
2XHREGISTER EBX:05E552D4
2XHREGISTER ECX:0032AB18
2XHREGISTER EDX:05E553A0
2XHREGISTER ESI:002B1998
2XHREGISTER EDI:00000000
2XHREGISTER CS:EIP:001B:1001F1C3
2XHREGISTER SS:ESP:0023:0006FC48 EBP:00000000
2XHREGISTER DS:0023 ES:0023 FS:003B GS:0000
NULL
1XHFLAGS Flags:00010246
NULL
NULL
------------------------------------------------------------------------
0SECTION CI subcomponent dump routine
NULL ============================
1CIJAVAVERSION J2RE 1.4.2 IBM Windows 32 build cn142ifx-20051115 (SR3 +
94164 + 97403 + 97482)
1CIRUNNINGAS Running as a standalone JVM
1CICMDLINE D:\IBM\WebSphere\AppServer\_jvm\bin\javaw.exe -classpath
D:\EclipseWorkspace\SQLParser DSSqlParser.SqlParser
1CIJAVAHOMEDIR Java Home Dir: D:\IBM\WebSphere\AppServer\_jvm\jre
1CIJAVADLLDIR Java DLL Dir: D:\IBM\WebSphere\AppServer\_jvm\jre\bin
1CISYSCP Sys Classpath:
D:\IBM\WebSphere\AppServer\_jvm\jre\lib\core.jar;D :\IBM\WebSphere\AppServer\_jvm\jre\lib\graphics.ja r;D:\IBM\WebSphere\AppServer\_jvm\jre\lib\security .jar;D:\IBM\WebSphere\AppServer\_jvm\jre\lib\serve r.jar;D:\IBM\WebSphere\AppServer\_jvm\jre\lib\xml. jar;D:\IBM\WebSphere\AppServer\_jvm\jre\lib\charse ts.jar;D:\IBM\WebSphere\AppServer\_jvm\jre\lib\ibm certpathprovider.jar;D:\IBM\WebSphere\AppServer\_j vm\jre\lib\ibmjaasactivelm.jar;D:\IBM\WebSphere\Ap pServer\_jvm\jre\lib\ibmjaaslm.jar;D:\IBM\WebSpher e\AppServer\_jvm\jre\lib\ibmjcefw.jar;D:\IBM\WebSp here\AppServer\_jvm\jre\lib\ibmjgssprovider.jar;D: \IBM\WebSphere\AppServer\_jvm\jre\lib\ibmjssefips. jar;D:\IBM\WebSphere\AppServer\_jvm\jre\lib\ibmjss eprovider.jar;D:\IBM\WebSphere\AppServer\_jvm\jre\ lib\ibmorb.jar;D:\IBM\WebSphere\AppServer\_jvm\jre \lib\ibmorbapi.jar;D:\IBM\WebSphere\AppServer\_jvm \jre\lib\ibmpkcs.jar
1CIUSERARGS UserArgs:
2CIUSERARG vfprintf 0x403000
2CIUSERARG -Dinvokedviajava
2CIUSERARG
-Djava.class.path=D:\EclipseWorkspace\SQLParser
2CIUSERARG vfprintf
NULL
1CIJVMMI JVM Monitoring Interface (JVMMI)
NULL ------------------------
2CIJVMMIOFF No events are enabled.
NULL
NULL
------------------------------------------------------------------------
0SECTION DC subcomponent dump routine
NULL ============================
1DCHEADEREYE Header eye catcher DCST
1DCHEADERLEN Header length 24
1DCHEADERVER Header version 1
1DCHEADERMOD Header modification 0
2DCARRAYINFO 10 - index 9 signature S name short[] factor 2
2DCARRAYINFO 11 - index 10 signature I name int[] factor 4
2DCARRAYINFO 12 - index 11 signature J name long[] factor 8
NULL
------------------------------------------------------------------------
0SECTION DG subcomponent dump routine
NULL ============================
1DGTRCENABLED Trace enabled: Yes
2DGTRCTYPE Trace: Internal
2DGTRCBUFFERS Buffer specification: 8k
2DGTRCBUFALLOC Buffers allocated: 0
2DGTRCBUFUSED Buffers in use: 0
1DGJDUMPBUFF Javadump buffer size (allocated): 2621440
NULL
------------------------------------------------------------------------
0SECTION ST subcomponent dump routine
NULL ============================
1STGCMODES Resettable GC: No
1STGCMODES Concurrent GC: No
1STCURHBASE Current Heap Base: 0x101801FC
1STCURHLIM Current Heap Limit: 0x1057FBFC
1STMWHBASE Middleware Heap Base: 0x101801FC
1STMWHLIM Middleware Heap Limit: 0x1057FBFC
1STGCHELPERS Number of GC Helper Threads: 0
1STJVMOPTS -Xconcurrentlevel: 0
1STJVMOPTS -Xconcurrentbackground: 0
1STGCCTR GC Counter: 0
1STAFCTR AF Counter: 0
1STHEAPFREE Bytes of Heap Space Free: 2f2e40
1STHEAPALLOC Bytes of Heap Space Allocated: 3ffa00
1STSMBASE SM Base: 0x0
1STSMEND SM End: 0x0
1STPAMSTART PAM Start: 0x0
1STPAMEND PAM End: 0x0
1STCOMACTION Compact Action: 0
NULL
------------------------------------------------------------------------
0SECTION XE subcomponent dump routine
NULL ============================
1XETHRESHOLD MMI threshold for java methods is set to 2000
1XEJITINIT JIT is initialized
1XEJVMPIOFF JVMPI is not activated
1XEJNITHRESH MMI threshold for JNI methods is set to 0
1XETRCHIS Trace history length is set to 4
1XEJITDUMP JIT dump routine is not yet implemented.
NULL
------------------------------------------------------------------------
0SECTION LK subcomponent dump routine
NULL ============================
NULL
1LKPOOLINFO Monitor pool info:
2LKPOOLINIT Initial monitor count: 32
2LKPOOLEXPNUM Minimum number of free monitors before expansion: 5
2LKPOOLEXPBY Pool will next be expanded by: 16
2LKPOOLTOTAL Current total number of monitors: 32
2LKPOOLFREE Current number of free monitors: 28
NULL
1LKMONPOOLDUMP Monitor Pool Dump (flat & inflated object-monitors):
2LKMONINUSE sys_mon_t:0x0026FD30 infl_mon_t: 0x002B227C:
3LKMONOBJECT java.lang.ref.Reference$Lock@10200598/102005A0:
<unowned>
3LKNOTIFYQ Waiting to be notified:
3LKWAITNOTIFY "Reference Handler" (0x1D6FAA0)
2LKMONINUSE sys_mon_t:0x0026FDC0 infl_mon_t: 0x002B22D4:
3LKMONOBJECT java.lang.ref.ReferenceQueue$Lock@102002D0/102002D8:
<unowned>
3LKNOTIFYQ Waiting to be notified:
3LKWAITNOTIFY "Finalizer" (0x1DF35E8)
NULL
1LKREGMONDUMP JVM System Monitor Dump (registered monitors):
2LKREGMON JITC PIC Lock (0x01EB1448): <unowned>
2LKREGMON JITC CHA lock (0x01E9B090): <unowned>
2LKREGMON JITC MB UPDATE lock (0x026A0070): <unowned>
2LKREGMON JITC Global_Compile lock (0x026A0020): <unowned>
2LKREGMON Free Class Loader Cache Entry lock (0x002B4098):
<unowned>
NULL
1LKOBJMONDUMP Java Object Monitor Dump (flat & inflated
object-monitors):
2LKINFLATEDMON java.lang.ref.ReferenceQueue$Lock@102002D0/102002D8
3LKINFLDETAILS locknflags 80000400 Monitor inflated infl_mon
0x002B22D4
2LKINFLATEDMON java.lang.ref.Reference$Lock@10200598/102005A0
3LKINFLDETAILS locknflags 80000200 Monitor inflated infl_mon
0x002B227C
NULL
------------------------------------------------------------------------
0SECTION XM subcomponent dump routine
NULL ============================
NULL
1XMCURTHDINFO Current Thread Details
NULL ----------------------
3XMTHREADINFO "main" (TID:0x101EB9B8, sys_thread_t:0x2B1B70,
state:R, native ID:0xCBC) prio=5:
pending=java.lang.NoClassDefFoundError
4XESTACKTRACE at DSSqlParser.SqlParser.init(Native Method)
4XESTACKTRACE at DSSqlParser.SqlParser.main(SqlParser.java:69)
1XMTHDINFO All Thread Details
NULL ------------------
NULL
2XMFULLTHDDUMP Full thread dump Classic VM (J2RE 1.4.2 IBM Windows 32
build cn142ifx-20051115 (SR3 + 94164 + 97403 + 97482), native threads):
3XMTHREADINFO "Finalizer" (TID:0x101EB8B0, sys_thread_t:0x1DF35E8,
state:CW, native ID:0x4AC) prio=8
4XESTACKTRACE at java.lang.Object.wait(Native Method)
4XESTACKTRACE at
java.lang.ref.ReferenceQueue.remove(ReferenceQueue .java:144)
4XESTACKTRACE at
java.lang.ref.ReferenceQueue.remove(ReferenceQueue .java:160)
4XESTACKTRACE at
java.lang.ref.Finalizer$FinalizerThread.run(Finali zer.java:225)
3XMTHREADINFO "Reference Handler" (TID:0x101EB908,
sys_thread_t:0x1D6FAA0, state:CW, native ID:0xBB8) prio=10
4XESTACKTRACE at java.lang.ref.Reference.process(Native
Method)
4XESTACKTRACE at
java.lang.ref.Reference.access$300(Reference.java: 50)
4XESTACKTRACE at
java.lang.ref.Reference$ReferenceHandler.run(Refer ence.java:130)
3XMTHREADINFO "Signal dispatcher" (TID:0x101EB960,
sys_thread_t:0x1DE63C8, state:R, native ID:0xD84) prio=5
3XMTHREADINFO "main" (TID:0x101EB9B8, sys_thread_t:0x2B1B70,
state:R, native ID:0xCBC) prio=5:
pending=java.lang.NoClassDefFoundError
4XESTACKTRACE at DSSqlParser.SqlParser.init(Native Method)
4XESTACKTRACE at DSSqlParser.SqlParser.main(SqlParser.java:69)
NULL
------------------------------------------------------------------------
0SECTION CL subcomponent dump routine
NULL ============================
1CLCLASSPATH Classpath
Z(D:\IBM\WebSphere\AppServer\_jvm\jre\lib\core.jar ),Z(D:\IBM\WebSphere\AppServer\_jvm\jre\lib\graphi cs.jar),Z(D:\IBM\WebSphere\AppServer\_jvm\jre\lib\ security.jar),Z(D:\IBM\WebSphere\AppServer\_jvm\jr e\lib\server.jar),Z(D:\IBM\WebSphere\AppServer\_jv m\jre\lib\xml.jar),Z(D:\IBM\WebSphere\AppServer\_j vm\jre\lib\charsets.jar),Z(D:\IBM\WebSphere\AppSer ver\_jvm\jre\lib\ibmcertpathprovider.jar),Z(D:\IBM \WebSphere\AppServer\_jvm\jre\lib\ibmjaasactivelm. jar),Z(D:\IBM\WebSphere\AppServer\_jvm\jre\lib\ibm jaaslm.jar),Z(D:\IBM\WebSphere\AppServer\_jvm\jre\ lib\ibmjcefw.jar),Z(D:\IBM\WebSphere\AppServer\_jv m\jre\lib\ibmjgssprovider.jar),Z(D:\IBM\WebSphere\ AppServer\_jvm\jre\lib\ibmjssefips.jar),Z(D:\IBM\W ebSphere\AppServer\_jvm\jre\lib\ibmjsseprovider.ja r),Z(D:\IBM\WebSphere\AppServer\_jvm\jre\lib\ibmor b.jar),Z(D:\IBM\WebSphere\AppServer\_jvm\jre\lib\i bmorbapi.jar),Z(D:\IBM\WebSphere\AppServer\_jvm\jr e\lib\ibmpkcs.jar)
1CLFLAGOLDJAVA Oldjava mode false
1CLFLAGBOOTSTRP Bootstrapping false
1CLFLAGVERBOSE Verbose class dependencies false
1CLENUMVERIFY Class verification VERIFY_REMOTE
1CLPNTRNAMECLLO Namespace to classloader 0x00000000
1CLPNTRCLSEXT Extension loader 0x101EB830
1CLPNTRSYSLOADR System classloader 0x101EB7B0
1CLTEXTCLLOS Classloader summaries
1CLTEXTCLLSS 12345678:
1=primordial,2=extension,3=shareable,4=middleware, 5=system,6=trusted,7=application,8=delegating
2CLTEXTCLLOADER -----ta- Loader
sun/misc/Launcher$AppClassLoader(0x01EAC960), Shadow 0x101EB7B0, Parent
sun/misc/Launcher$ExtClassLoader(0x101EB830)
3CLNMBRLOADEDCL Number of loaded classes 1
3CLNMBRCACHECLS Number of cached classes 259
3CLHEXDALLOCTIO Allocation used for loaded classes 1
3CLHEXDPCKGEOWN Package owner 0x101EB7B0
2CLTEXTCLLOADER -xh-st-- Loader
sun/misc/Launcher$ExtClassLoader(0x01EA20D0), Shadow 0x101EB830, Parent
*none*(0x00000000)
3CLNMBRLOADEDCL Number of loaded classes 0
3CLNMBRCACHECLS Number of cached classes 0
3CLHEXDALLOCTIO Allocation used for loaded classes 3
3CLHEXDPCKGEOWN Package owner 0x101EB830
2CLTEXTCLLOADER p-h-st-- Loader *System*(0x00361F20), Shadow
0x00000000
3CLNMBRLOADEDCL Number of loaded classes 306
3CLNMBRCACHECLS Number of cached classes 306
3CLHEXDALLOCTIO Allocation used for loaded classes 3
3CLHEXDPCKGEOWN Package owner 0x00000000
1CLTEXTCLLOD ClassLoader loaded classes
2CLTEXTCLLOAD Loader
sun/misc/Launcher$AppClassLoader(0x01EAC960)
3CLTEXTCLASS DSSqlParser/SqlParser(0x101DF0E0)
2CLTEXTCLLOAD Loader
sun/misc/Launcher$ExtClassLoader(0x01EA20D0)
2CLTEXTCLLOAD Loader *System*(0x00361F20)
3CLTEXTCLASS java/io/DataOutput(0x002DA068)
3CLTEXTCLASS sun/net/www/URLConnection(0x01E76898)
3CLTEXTCLASS
com/ibm/jvm/io/FileOutputStream(0x002DC2D8)
3CLTEXTCLASS
java/util/Hashtable$EmptyIterator(0x002D4758)
3CLTEXTCLASS java/lang/ClassLoader(0x002D29A8)
3CLTEXTCLASS java/lang/Comparable(0x002D0738)
NULL
------------------------------------------------------------------------
0SECTION Javadump End section
1DGJDUMP Javadump Buffer Usage Information
NULL =================================
2DGJDUMPALLOC Javadump buffer size (allocated): 2621440
2DGJDUMPUSED Javadump buffer size (used) : 34558
NULL ---------------------- END OF DUMP
-------------------------------------

Any help is appreciated.

ADG13


Chris Uppal 06-28-2006 09:17 AM

Re: WebSphere JVM Access Violation Problem running Java program that calls methods in a Windows C++ DLL via a JNI wrapper.......
 
adgarcia13 wrote:

> Am having a problem running an Eclipse Java program in the IDE on
> Windows XP that calls Windows C++ methods in a Windows DLL via JNI. The
> JNI wrapper was developed using the SUN JVM. When we run the java
> program using the SUN JVM it all works well; when we attempt this using
> the JVM available with IBM Websphere 6.0.2.5 we have the following
> problem when we attempted to make the first C++ init method call:


The dump file doesn't mean a thing to me, but one small suggestion is that you
may be making false assumptions about JNI which the Sun JVM either doesn't care
about or does care, but doesn't check. The IBM JVMs' implementations
of -Xcheck:jni is more helpful than the Sun one (it found a false assumption in
my own JNI code), so it might be helpful to run with that turned on.

-- chris



Gordon Beaton 06-28-2006 11:19 AM

Re: WebSphere JVM Access Violation Problem running Java program that calls methods in a Windows C++ DLL via a JNI wrapper.......
 
On 27 Jun 2006 10:00:38 -0700, adgarcia13 wrote:
> Am having a problem running an Eclipse Java program in the IDE on
> Windows XP that calls Windows C++ methods in a Windows DLL via JNI.
> The JNI wrapper was developed using the SUN JVM. When we run the
> java program using the SUN JVM it all works well; when we attempt
> this using the JVM available with IBM Websphere 6.0.2.5 we have the
> following problem when we attempted to make the first C++ init
> method call:


Signal 11 on Unix would indicate a segmentation fault, I don't know if
it's something similar on Windows.

Since the dump indicates a pending "NoClassDefFoundError" in
SqlParser.init(), I'll take a guess and suggest that you failed to
check the return value from FindClass() or similar JNI API function
before proceeding to use the value in a subsequent call.

/gordon

--
[ do not email me copies of your followups ]
g o r d o n + n e w s @ b a l d e r 1 3 . s e


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