Xun, The problem is caused by self-relauching of the launcher if LD_LIBRARY_PATH does not contain needed entries. I believe this question is put somewhere in FAQ, at first attempt I found this link [1], please see there for details.
[1] http://wiki.apache.org/harmony/Debugging_DRLVM_with_GDB_on_Linux -- Alexey 2007/10/26, Xiao-Feng Li <[EMAIL PROTECTED]>: > Xun, in my understranding, the cmain.c has the exact main trance to > Harmony: main(). It's the launcher program to start the virtual > machine module. Harmony launcher can start user-specified JVM if > command line option is provided or the current default one: DRLVM. > > Just following main() you will find DRLVM will be launched. If you > don't care about the launcher, you can set breakpoint in the position > you are interested in, such as vm_init1() that initializes DRLVM. > > Thanks, > xiaofeng > > On 10/26/07, Zhou. Xun <[EMAIL PROTECTED]> wrote: > > I was debugging the jre/bin/java of Harmony using gdb, > > I made a break point at main(); > > But when I run this program, gdb told me a new thread was created, then it > > swith to this thread and stopped at the first line of main(); > > I was wondering what does this thread came from? and what does it do before > > main()? > > The console is like this > > > > (gdb) file java > > Reading symbols from /home/zhouxun/hdk/jdk/jre/bin/java...done. > > Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1". > > (gdb) b main > > Breakpoint 1 at 0x804b62e: file ../shared/cmain.c, line 102. > > (gdb) r Hello > > Starting program: /home/zhouxun/hdk/jdk/jre/bin/java Hello > > [Thread debugging using libthread_db enabled] > > [New Thread -1213589808 (LWP 7100)] > > [Switching to Thread -1213589808 (LWP 7100)] > > > > Breakpoint 1, main (argc=2, argv=0xbfc88004, envp=0xbfc88010) at > > ../shared/cmain.c:102 > > 102 int rc = 257; > > (gdb) > > > > -- > > From: ZhouXun, Software School of Fudan University > > > > > -- > http://xiao-feng.blogspot.com >
