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Re: /usr/bin/gcj-dbtool problem



On Thu, 2006-02-02 at 00:11 -0500, Dan Williams wrote:
> On Wed, 2006-02-01 at 23:11 -0500, Andrew Overholt wrote:
> > CCing Andrew Haley
> > 
> > * Erwin Rol <mailinglists erwinrol com> [2006-02-01 22:55]:
> > > 
> > > For a while i have the the problem that /usr/bin/gcj-dbtool hangs until
> > > i kill it. This is a problem because most java packages use it in their
> > > %pre and %post script, and so all installs (and updates) of java
> > > programs like eclipse and openoffice hang.
> > 
> > I believe Andrew Haley was tracking this down.  I don't think it has
> > anything to do with the CDT.
> 
> I was having a problem with this once with mock and the Extras
> buildsystem, and we thought the cause might have been python <= 2.3,
> which masks _all_ signals for new threads.  Somebody said that gcj uses
> signals for thread control, which may have lead to a deadlock waiting
> for a thread to exit when the signal was simply ignored due to python
> stupidity.  Not sure if signal masks have anything to do with rpm, but
> it seemed to be the issue with python <= 2.3.
> 

I don't know if it helps, but here is a back trace
of /usr/bin/gcj-dbtool. Also keep in mind this is on x86_64, which i
forgot to mention earlier.

(gdb) info threads
  2 Thread 1084229984 (LWP 16734)  0x0000003e1d009436 in ?? () from /lib64/libpthread.so.0
  1 Thread 47043201282672 (LWP 16733)  0x0000003e1d00b01d in ?? () from /lib64/libpthread.so.0
(gdb) thread 1
[Switching to thread 1 (Thread 47043201282672 (LWP 16733))]#0  0x0000003e1d00b01d in ?? () from /lib64/libpthread.so.0
(gdb) bt
#0  0x0000003e1d00b01d in ?? () from /lib64/libpthread.so.0
#1  0x00002ac9189c3dc3 in GC_stop_world () from /usr/lib/../lib64/libgcj.so.7
#2  0x00002ac9189b63bb in GC_stopped_mark () from /usr/lib/../lib64/libgcj.so.7
#3  0x00002ac9189b66fb in GC_try_to_collect_inner () from /usr/lib/../lib64/libgcj.so.7
#4  0x00002ac9189b6960 in GC_collect_or_expand () from /usr/lib/../lib64/libgcj.so.7
#5  0x00002ac9189b6e5b in GC_allocobj () from /usr/lib/../lib64/libgcj.so.7
#6  0x00002ac9189badb0 in GC_generic_malloc_inner () from /usr/lib/../lib64/libgcj.so.7
#7  0x00002ac9189bb7f7 in GC_generic_malloc_many () from /usr/lib/../lib64/libgcj.so.7
#8  0x00002ac9189c31a4 in GC_local_malloc_atomic () from /usr/lib/../lib64/libgcj.so.7
#9  0x00002ac918509ec7 in _Jv_NewPrimArray () from /usr/lib/../lib64/libgcj.so.7
#10 0x00002ac918559074 in gnu::gcj::runtime::PersistentByteMap::getBytes () from /usr/lib/../lib64/libgcj.so.7
#11 0x00002ac9185591a2 in gnu::gcj::runtime::PersistentByteMap$HashIterator::next () from /usr/lib/../lib64/libgcj.so.7
#12 0x00002ac918558e86 in gnu::gcj::runtime::PersistentByteMap::putAll () from /usr/lib/../lib64/libgcj.so.7
#13 0x0000000000404592 in ?? ()
#14 0x00002ac918532483 in gnu::java::lang::MainThread::call_main () from /usr/lib/../lib64/libgcj.so.7
#15 0x00002ac91853f5ca in _Jv_ThreadRun () from /usr/lib/../lib64/libgcj.so.7
#16 0x00002ac91850ad4b in _Jv_RunMain () from /usr/lib/../lib64/libgcj.so.7
#17 0x0000003e1be1cde4 in __libc_start_main (main=0x402cc0, argc=168, ubp_av=0x7fffff98f658, init=Variable "init" is not available.
) at libc-start.c:231
#18 0x0000000000402c49 in ?? ()
#19 0x00007fffff98f648 in ?? ()
#20 0x0000000000000000 in ?? ()
(gdb) thread 2
[Switching to thread 2 (Thread 1084229984 (LWP 16734))]#0  0x0000003e1d009436 in ?? () from /lib64/libpthread.so.0
(gdb) bt
#0  0x0000003e1d009436 in ?? () from /lib64/libpthread.so.0
#1  0x00002ac918545992 in _Jv_CondWait () from /usr/lib/../lib64/libgcj.so.7
#2  0x00002ac918531da4 in gnu::gcj::runtime::FinalizerThread::run () from /usr/lib/../lib64/libgcj.so.7
#3  0x00002ac91853f5ca in _Jv_ThreadRun () from /usr/lib/../lib64/libgcj.so.7
#4  0x00002ac918545521 in _Jv_ThreadRegister () from /usr/lib/../lib64/libgcj.so.7
#5  0x00002ac9189c339e in GC_start_routine () from /usr/lib/../lib64/libgcj.so.7
#6  0x0000003e1d00615a in start_thread (arg=Variable "arg" is not available.
) at pthread_create.c:261
#7  0x0000003e1bec92bd in ?? () from /lib64/libc.so.6
#8  0x0000000000000000 in ?? ()



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