Java HotSpot Virtual Machine

Hello Guys,

We have received some c code from our client their encryption/decryption algorithams from our client which we have to integrate in our java code. I have written a java class with some native methods. And a c program which is called from java using JNI and this c program calls the functions from the code provided by our client. Taking togather my own c program and the progs provided by the client i create a dll file on windows and i can call all the functions properly. So no problems till this point. Now we have to deploy the project on AIX, I take the same code to AIX and now i am creating a .so file insted of dll, compilation and library creation is fine( I am using C for AIX Compiler, Version 5), i am creating the library with the command

cc -g -G -I/usr/WebSphere/AppServer/java/include/ *.c -o libVMD.so

invoking some of the native methods in my java class from a test program also works fine but with a couple of other functions the JVM is crashing

This is the output that i get on my command window



SIGILL 4 (*) illegal instruction (not reset when caught)

si_signo [4]: SIGILL: (*) illegal instruction (not reset when caught)

si_errno [0]: Error 0

si_code [30]: ILL_ILLOPC [addr: 0x0]

stackpointer=2ff21ca8

Writing java dump to /usr/dev/cookie/src/javacore22492.1004125181.txt... OK

Illegal instruction(coredump)

and here is the core dump.

Fri Oct 26 15:39:41 2001


SIGILL received at d4d4d1d8 in /usr/lib/libVMD.so. Processing terminated.
J2RE 1.3.0 IBM build ca130-20010615a
/usr/WebSphere/AppServer/java/bin/java com.nubase.vmd.core.util.VmdHelper em manon4

System Properties
-----------------
Java Home Dir: /usr/WebSphere/AppServer/java/jre
Java DLL Dir: /usr/WebSphere/AppServer/java/jre/bin
Sys Classpath: /usr/WebSphere/AppServer/java/jre/lib/rt.jar:/usr/WebSphere/AppServer/java/jre/lib/i18n.jar:/usr/WebSphere/AppServer/java/jre/classes
User Args:
-Djava.class.path=:/opt/db2inst1/sqllib/java/sqlj.zip:/opt/db2inst1/sqllib/java/db2java.zip:/opt/db2inst1/sqllib/java/runtime.zip:.


Current Thread Details
----------------------

"main" (TID:0x300987e0, sys_thread_t:0x3000d7d8, state:R, native ID:0x1) prio=5
at com.nubase.vmd.core.util.VmdHelper.encryptPassword(Native Method)
at com.nubase.vmd.core.util.VmdHelper.main(VmdHelper.java:172)


----- Native Stack -----
VmdEncrypteMotDePasse
Java_com_nubase_vmd_core_util_VmdHelper_encryptPassword
mmisInvoke_O_OHelper
_OHelper0 ?!??|^H^B?^C?^E^H`?
-------------------------------------------------------------------------

Operating Environment
---------------------
Host : VMD:192.168.0.253
OS Level : AIX 4.3.3.0
Processors -
Architecture : POWER_PC (impl: POWER_604, ver: PV_604)
How Many : 1
Enabled : 1

User Limits (in bytes except for NOFILE and NPROC) -
RLIMIT_FSIZE : 1073741312
RLIMIT_DATA : 2147483645
RLIMIT_STACK : 33554432
RLIMIT_CORE : 1073741312
RLIMIT_NOFILE : 2000
NPROC(max) : 262144

Page Space (in blocks) -
/dev/hd6: size=524288, free=523755

Application Environment
-----------------------
Signal Handlers -
SIGQUIT : intrDispatchMD (libhpi.a)
SIGILL : intrDispatchMD (libhpi.a)
SIGTRAP : unknown handler (libjitc.a)
SIGABRT : intrDispatchMD (libhpi.a)
SIGEMT : intrDispatchMD (libhpi.a)
SIGFPE : intrDispatchMD (libhpi.a)
SIGBUS : intrDispatchMD (libhpi.a)
SIGSEGV : intrDispatchMD (libhpi.a)
SIGSYS : intrDispatchMD (libhpi.a)
SIGPIPE : ignored
SIGUSR2 : unknown handler (libjitc.a)
Environment Variables -
_=/usr/WebSphere/AppServer/java/bin/java
LANG=en_US
LOGIN=root
IMQCONFIGCL=/etc/IMNSearch/dbcshelp
PATH=/usr/bin:/etc:/usr/sbin:/usr/ucb:/opt/root/bin:/usr/bin/X11:/sbin:.:/opt/db2inst1/sqllib/bin:/opt/db2inst1/sqllib/adm:/opt/db2inst1/sqllib/misc
LC__FASTMSG=true
IMQCONFIGSRV=/etc/IMNSearch
CGI_DIRECTORY=/var/docsearch/cgi-bin
CLASSPATH=:/opt/db2inst1/sqllib/java/sqlj.zip:/opt/db2inst1/sqllib/java/db2java.zip:/opt/db2inst1/sqllib/java/runtime.zip:.
LOGNAME=root
MAIL=/usr/spool/mail/root
LOCPATH=/usr/lib/nls/loc
DOCUMENT_SERVER_MACHINE_NAME=localhost
USER=root
AUTHSTATE=compat
SHELL=/bin/ksh
ODMDIR=/etc/objrepos
DOCUMENT_SERVER_PORT=49213
HOME=/opt/root
DB2INSTANCE=db2inst1
LD_LIBRARY_PATH=/usr/lib
TERM=vt100
MAILMSG=[YOU HAVE NEW MAIL]
PWD=/usr/dev/cookie/src
DOCUMENT_DIRECTORY=/usr/docsearch/html
TZ=EST5EDT
A__z=! LOGNAME
XFILESEARCHPATH=/usr/WebSphere/AppServer/java/jre/lib/locale/%L/%T/%N%S:/usr/WebSphere/AppServer/java/jre/lib/locale/%L/%T/%N%S:
MALLOCMULTIHEAP=1
AIXTHREAD_SCOPE=S
AIXTHREAD_MUTEX_DEBUG=OFF
AIXTHREAD_RWLOCK_DEBUG=OFF
AIXTHREAD_COND_DEBUG=OFF
LIBPATH=/usr/WebSphere/AppServer/java/jre/bin:/usr/WebSphere/AppServer/java/jre/bin/classic:/opt/db2inst1/sqllib/lib
NLSPATH=/usr/lib/nls/msg/%L/%N:/usr/lib/nls/msg/%L/%N.cat
IBM_JAVA_COMMAND_LINE=/usr/WebSphere/AppServer/java/bin/java com.nubase.vmd.core.util.VmdHelper em manon4
JAVA_MAIN_VM=805392576

Loaded Libraries (sizes in bytes)
---------------------------------
/usr/lib/libVMD.so
filesize : 111802
text start : d4d48000
text size : aa17
data start : 34d6e928
data size : 20f8
/usr/WebSphere/AppServer/java/jre/bin/libjitc.a
filesize : 2262001
text start : d3785000
text size : 1c53f3
data start : 34452570
data size : b020
/usr/lib/libiconv.a
filesize : 377832
text start : d0034100
text size : 13f3a
data start : 34404da0
data size : a574
/usr/lib/libi18n.a
filesize : 122601
text start : d002c100
text size : 78b4
data start : 344104b0
data size : 1124
/usr/lib/nls/loc/en_US
filesize : 14340
text start : d0026000
text size : 2d71
data start : d0029130
data size : 2324
/usr/WebSphere/AppServer/java/jre/bin/libzip.a
filesize : 106943
text start : d3771000
text size : 133ab
data start : 34291c70
data size : 1fdc
/usr/WebSphere/AppServer/java/jre/bin/libhpi.a
filesize : 111461
text start : d3761000
text size : fe2b
data start : 3003f340
data size : d20
/usr/WebSphere/AppServer/java/jre/bin/libxhpi.a
filesize : 10041
text start : d375f000
text size : 134a
data start : 3003ed50
data size : 1c8
/usr/WebSphere/AppServer/java/jre/bin/libjava.a
filesize : 398297
text start : d371f000
text size : 3fbf5
data start : 30036b18
data size : 6d18
/usr/WebSphere/AppServer/java/jre/bin/classic/libjvm.a
filesize : 1721315
text start : d35ed000
text size : 131aaf
data start : 300111d8
data size : 24e08
/usr/lib/libbsd.a
filesize : 62186
text start : d00d24e0
text size : 7deb
data start : f010ab28
data size : 1460
/usr/lib/libC.a
filesize : 2610937
text start : d080c360
text size : 5982
data start : f01d4760
data size : a08
/usr/lib/libC.a
filesize : 2610937
text start : d0798660
text size : 5fca
data start : f01d3460
data size : 83c
/usr/lib/libC.a
filesize : 2610937
text start : d079f7c0
text size : 6c174
data start : f01c0dc0
data size : 113c4
/usr/lib/libC.a
filesize : 2610937
text start : d078c070
text size : b756
data start : f01bf31c
data size : 1c
/usr/lib/libpthreads.a
filesize : 713478
text start : d0001000
text size : 22b4
data start : f0082000
data size : 41004
/usr/lib/libpthreads.a
filesize : 713478
text start : d0004000
text size : 202a1
data start : f00c4000
data size : 400c
/usr/lib/libC.a
filesize : 2610937
text start : d0757100
text size : 33653
data start : f01bad00
data size : 411c
/usr/lib/libcrypt.a
filesize : 11167
text start : d00250f8
text size : 87a
data start : f0081528
data size : 13c
/usr/lib/libc.a
filesize : 6409580
text start : d015f720
text size : 1c26a3
data start : f0000a20
data size : 7f908


"Finalizer" (TID:0x30098708, sys_thread_t:0x342f6d38, state:CW, native ID:0x304) prio=8
at java.lang.Object.wait(Native Method)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:114)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:129)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:168)


----- Native Stack -----
unavailable - iar 3008ffe8 not in text area
-------------------------------------------------------------------------

"Reference Handler" (TID:0x30098750, sys_thread_t:0x342f0c58, state:CW, native ID:0x203) prio=10
at java.lang.Object.wait(Native Method)
at java.lang.Object.wait(Object.java:421)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)


----- Native Stack -----
unavailable - iar 0 not in text area
-------------------------------------------------------------------------

"Signal dispatcher" (TID:0x30098798, sys_thread_t:0x342ebf98, state:CW, native ID:0x102) prio=5


----- Native Stack -----
unavailable - iar 0 not in text area
-------------------------------------------------------------------------

"main" (TID:0x300987e0, sys_thread_t:0x3000d7d8, state:R, native ID:0x1) prio=5
at com.nubase.vmd.core.util.VmdHelper.encryptPassword(Native Method)
at com.nubase.vmd.core.util.VmdHelper.main(VmdHelper.java:172)


----- Native Stack -----
VmdEncrypteMotDePasse
Java_com_nubase_vmd_core_util_VmdHelper_encryptPassword
mmisInvoke_O_OHelper
_OHelper0 ?!??|^H^B?^C?^E^H`?
-------------------------------------------------------------------------

Monitor pool info:
Initial monitor count: 32
Minimum number of free monitors before expansion: 5
Pool will next be expanded by: 16
Current total number of monitors: 32
Current number of free monitors: 28

Monitor Pool Dump (inflated object-monitors):
sys_mon_t:0x30009de8 infl_mon_t: 0x300099f8:
java.lang.ref.Reference$Lock@3009DB38/3009DB40: <unowned>
Waiting to be notified:
"Reference Handler" (0x342f0c58)
sys_mon_t:0x30009ee8 infl_mon_t: 0x30009a38:
java.lang.ref.ReferenceQueue$Lock@3009D748/3009D750: <unowned>
Waiting to be notified:
"Finalizer" (0x342f6d38)

JVM System Monitor Dump (registered monitors):
Integer lock access-lock: <unowned>
ACS Heap lock: <unowned>
System Heap lock: <unowned>
Sleep lock: <unowned>
Method trace lock: <unowned>
UTF8 Cache lock: <unowned>
Heap lock: <unowned>
Rewrite Code lock: <unowned>
Monitor Cache lock: owner "main" (0x3000d7d8) 1 entry
JNI Pinning lock: <unowned>
JNI Global Reference lock: <unowned>
Classloader lock: <unowned>
Linking class lock: <unowned>
Binclass lock: <unowned>
Monitor Registry lock: owner "main" (0x3000d7d8) 1 entry
Thread queue lock: owner "main" (0x3000d7d8) 1 entry

Thread identifiers (as used in flat monitors):
ident 5 "Finalizer" (0x342f6d38) ee 0x342f6b6c
ident 4 "Reference Handler" (0x342f0c58) ee 0x342f0a8c
ident 3 "Signal dispatcher" (0x342ebf98) ee 0x342ebdcc
ident 2 "main" (0x3000d7d8) ee 0x3000d60c

Java Object Monitor Dump (flat & inflated object-monitors):
java.lang.ref.ReferenceQueue$Lock@3009D748/3009D750
locknflags 80000400 Monitor inflated infl_mon 0x30009a38
java.lang.ref.Reference$Lock@3009DB38/3009DB40
locknflags 80000200 Monitor inflated infl_mon 0x300099f8

what i am doing wrong here? or if there are any other issues while using JNI on AIX.

All the help appreciated.

Thanks