Hanging multi-threaded tools

[Andreas Höschler]

Hi all,

I still have problems with multi-threaded tools that run into the following 
trap on a regular basis:

#0  0xfdd78aab in __lwp_park () from /lib/libc.so.1
#1  0xfdd718f3 in mutex_lock_queue () from /lib/libc.so.1
#2  0xfdd7225c in mutex_lock_impl () from /lib/libc.so.1
#3  0xfdd72335 in pthread_mutex_lock () from /lib/libc.so.1
#4  0xfed9f36a in __objc_mutex_lock (mutex=0x4d) at ../gcc/gthr-posix.h:95
#5  0xfed9ea23 in objc_mutex_lock (mutex=0x81d27f0) at 
/usr/share/src/gcc-3.4.4/libobjc/thr.c:326
#6  0xfdf4d3b8 in -[NSLock lock] (self=0x81d2780, _cmd=0xfe1edcc0) at 
NSLock.m:241
#7  0xfdfba858 in +[GSPerformHolder receivedEvent:type:extra:forMode:] 
(self=0xfe1ed940, _cmd=0xfe2029a0, 
    data=0x5, type=ET_RDESC, extra=0x5, mode=0xfe1e8ae8) at NSThread.m:918
#8  0xfe031317 in -[GSRunLoopCtxt pollUntil:within:] (self=0x81c8568, 
_cmd=0xfe1e8a30, milliseconds=283988, 
    contexts=0x82256a8) at GSRunLoopCtxt.m:585
#9  0xfdf92567 in -[NSRunLoop acceptInputForMode:beforeDate:] (self=0x82273b0, 
_cmd=0xfe1e8a58, 
    mode=0xfe1e8ae8, limit_date=0x81d9cc8) at NSRunLoop.m:969
#10 0xfdf9290c in -[NSRunLoop runMode:beforeDate:] (self=0x82273b0, 
_cmd=0xfe1e8a68, mode=0xfe1e8ae8, 
    date=0x81f29f0) at NSRunLoop.m:1043
#11 0xfdf92a92 in -[NSRunLoop runUntilDate:] (self=0x82273b0, _cmd=0xfe1e8a60, 
date=0x81f29f0)
    at NSRunLoop.m:1074
#12 0xfdf929a7 in -[NSRunLoop run] (self=0x82273b0, _cmd=0x806bfc8) at 
NSRunLoop.m:1057
#13 0x08056e7d in main (argc=1, argv=0x8047788) at main.m:24

Any idea what this might be caused by? This is all pure GNUstep code!? I am 
wondering what I might have done wrong!??

Hints greatly appreciated!!

Thanks in advance,

 Andreas