> When I try to run ./java helloworld, it just hangs and I have to kill > the process. I investigated this a little bit, and I found that it > hangs on the call to FindClass (in main.c line around line 1199). > I am > unable debug with gdb also, so I have resorted to printf's, and in > jni.cpp, I found the definition of FindClass, and put an printf to see > what class it is trying to find when it hangs. I see the following: > > Line 478 in jni.cpp: inside JNICALL FindClass: java/lang/Thread > > Also, when I run ./java -Xtrace:em, I get the following (and it > hangs): > ... > EM: compile start:[JET_DPGO n=802] java/lang/Thread::join()V > EM: compile done:[JET_DPGO n=802: OK] java/lang/Thread::join()V > EM: compile start:[JET_DPGO n=803] java/lang/Object::wait()V > EM: compile done:[JET_DPGO n=803: OK] java/lang/Object::wait()V > Line 478 in jni.cpp: inside JNICALL FindClass: java/lang/Thread > > Again, it seems to always hang after FindClass is called for > java/lang/Thread. > > I have tried setting LD_LIBRARY_PATH as suggested earlier. I also > have > JAVA_HOME set (and I have tried it with it unset). Everything > seems to > have the same behavior. > [EMAIL PROTECTED] ~/Harmony/enhanced/drlvm/trunk/build/deploy/jre/bin $ > echo > $LD_LIBRARY_PATH > /homes/anavabi/Harmony/enhanced/drlvm/trunk/build/deploy/jre/bin/:/ > homes/anavabi/Harmony/enhanced/drlvm/trunk/build/deploy/jre/bin/ > default > [EMAIL PROTECTED] ~/Harmony/enhanced/drlvm/trunk/build/deploy/jre/bin $ > echo > $JAVA_HOME > /homes/anavabi/Harmony/enhanced/drlvm/trunk/build/deploy/jre > > I am using Gentoo Linux. Any ideas?
> Thanks, > Armand > > Gregory Shimansky wrote: >> On Friday 22 September 2006 14:31 Egor Pasko wrote: >> >>> what makes me really nervous is that I cannot debug in GDB on Linux >>> (!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!) >>> >>> When GDB starts, it becomes broken right after the start: >>> [New Thread 1080397952 (LWP 13879)] >>> [New Thread 1083603888 (LWP 13882)] >>> Cannot find user-level thread for LWP 13879: generic error >>> >>> Did anybody come across this problem recently? I googled a >>> little, but >>> could not find any valuable comments. I remember, there was no such >>> problem in older days!! Is that our new ThreadManager that does >>> things >>> like this? or is it something else? >>> >> >> I've seen in another thread. The problem with gdb is caused >> because process >> reexecs itself with new environment (there is no other way known >> to tell >> dynamic linker to use a library path). This is new launcher >> feature necessary >> to get rid of java shell script and use a real executable. >> >> Ivan Volosyuk investigated the conditions when launcher performs >> execing >> itself to set LD_LIBRARY_PATH and it appears (unless fixed >> recently) that you >> need to set LD_LIBRARY_PATH=<HDK path>/bin/:<HDK path>/bin/ >> default. Don't >> forget a tailing slash in the first path :) >> >> Anyway, to get the correct LD_LIBRARY_PATH which launcher wants >> you can get it >> from /proc/`pidof java`/environ if you launch a simple java >> program and catch >> its reexeced environment. If LD_LIBRARY_PATH contents is equal to >> what >> launcher wants, reexecing doesn't happen and this allows normal >> debugging. >> >> I think we should document this since it is going to stay for a >> long time and >> is really required for development on Linux. >> >> > > > --------------------------------------------------------------------- > Terms of use : http://incubator.apache.org/harmony/mailing.html > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > --------------------------------------------------------------------- Terms of use : http://incubator.apache.org/harmony/mailing.html To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- Terms of use : http://incubator.apache.org/harmony/mailing.html To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
