JNI_CreateVM does not work on redhat 6.1 when using jdk117_v1a. Take a look at the following bug report. http://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=6056 It says it works with the IBM jdk. But I've found the IBM jdk to be even less stable than the blackdown version. I've entered a bug at the Blackdown Jitterbug. (Bug # 1526) This is quite critical so I hope it gets resolved soon. From: Tom Otvos <[EMAIL PROTECTED]> To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]> Subject: Java, threads, and RedHat 6.1 Date: Tue, 23 Nov 1999 17:43:26 -0500 I am trying to create a (p)threaded application on Red Hat 6.1 that uses the Invocation API. Unfortunately, things are not going so well. At first, I downloaded the Blackdown 1.2 pre-v2 distribution, but found I could not link because of glibc incompatibilities as Red Hat 6.1 ships with glibc 2.1.2. Then, I switched over to the 1.1.7 distribution, including the native threads updates, which I can successfully build with but when I try to call JNI_CreateJavaVM, I get a segmentation fault. The stack crawl looks something like: in JNI_CreateJavaVM at jni.c:3924 in sysInitializeJavaVM at javai.c:832 in InitializeClassThread at threadruntime.c:111 in sun_misc_VM_unsuspendSomeThreads at threads.c:87 in sysThreadInitializeSystemThreads at threads_md.c:140 in InitializeFinalizerThread at finalize.c:303 in execute_java_constructor at interpreter.c:153 in EE from libjava.so I am going to try to backtrack and get a reduced case scenario, but I am afraid I don't know enough about Linux or the internals of the Java VM to make real progress. So, I have a couple of questions. 1) Am I correct in that I cannot use the current Blackdown 1.2 on Red Hat 6.1? 2) Since my application is (p)threaded, am I correct that I need a native-thread version of the Java VM? 3) Can I use the Invocation API with version 1.1.7 of the Blackdown VM and native threads? I should mention that I have the same application running correctly on Win32, so I believe that I am using the Invocation API correctly. In particular, I know about attaching threads and so on. In this case, however, I am not even getting that far. If anyone can shed some light on this, I would be very grateful. Tom Otvos Director of Research, Pervasive Software Inc. "Don't think you are. Know you are." - Morpheus ---------------------------------------------------------------------- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com ---------------------------------------------------------------------- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
