Date: Thu, 9 Oct 2008 15:19:00 +0000 From: Charlie Root <root@fourcalorieservers.com> To: freebsd-java@freebsd.org Subject: jni issues with JDK1.6.0 (calling vm from c++ native) Message-ID: <20081009151900.GA1973@fourcalorieservers.com>
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Hello all:
I have a small snippet program that attempts to launch a java vm (JDK1.6.0 on FreeBSD 7.0) using c++ native code with jni.
The pertinent line of code to launch the vm is:
...
//
// Create VM
//
JNI_CreateJavaVM(&jvm,(void **)&env, &vm_args);
...
When the test program is executed with truss, the output shows the cause of the crash is a call to non-existent call ksem_init:
gettimeofday({1223561385.435451},0x0) = 0 (0x0)
lseek(3,0x2b0d74c,SEEK_SET) = 45143884 (0x2b0d74c)
read(3,"PK\^C\^D\n\0\0\0\0\0\M^U\M^Q\f9"...,30) = 30 (0x1e)
lseek(3,0x2b0d791,SEEK_SET) = 45143953 (0x2b0d791)
read(3,"\M-J\M-~\M-:\M->\0\0\0001\0<\b\0"...,1134) = 1134 (0x46e)
gettimeofday({1223561385.436426},0x0) = 0 (0x0)
gettimeofday({1223561385.436553},0x0) = 0 (0x0)
gettimeofday({1223561385.436811},0x0) = 0 (0x0)
gettimeofday({1223561385.436972},0x0) = 0 (0x0)
gettimeofday({1223561385.437336},0x0) = 0 (0x0)
gettimeofday({1223561385.437588},0x0) = 0 (0x0)
gettimeofday({1223561385.437729},0x0) = 0 (0x0)
gettimeofday({1223561385.437879},0x0) = 0 (0x0)
gettimeofday({1223561385.438150},0x0) = 0 (0x0)
gettimeofday({1223561385.537357},0x0) = 0 (0x0)
gettimeofday({1223561385.537543},0x0) = 0 (0x0)
ksem_init(0xbfbfe87c,0x0,0x2804a419,0x28077200,0x510,0x0) ERR#78 'Function not implemented'
SIGNAL 12 (SIGSYS)
A subsequent culling of internet mailing lists shows that the ksem_init call is in fact a non-existent call on the GENERIC kernel for FreeBSD 7.0, due to the fact that the GENERIC kernel does not include the P1003_1B_SEMAPHORES option.
Before I rebuild the kernel with the P1003_1B_SEMAPHORES option, are there any issues/caveats involved with using it on FreeBSD 7.0 (Taking into consideration that I must make heavy use of pthreads in the application)?.
-Regards,
Ron
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