Subj : Re: Linux thread weird problem..
To   : comp.programming.threads
From : ranjeetw
Date : Fri Jul 01 2005 06:05 am

Thanks Joe for replying...

>> Debugging deadlock is just a matter of looking at the
>> stack traces to see what your threads are waiting for.

Yes, I believe that...And I was doing that since last 4 days, before
seeking help here. I am posting the stack trace, just for u to have a
look. (This is condition  few minutes after application is locked. I
could post full stack trace, in case u r interested.)

Thread 9 (Thread -1221018704 (LWP 6053)):
#0  0xb75ebc32 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2

Thread 8 (Thread -1231508560 (LWP 6054)):
#0  0xb75ebc32 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2

Thread 7 (Thread -1241998416 (LWP 6055)):
#0  0xb75ebc32 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2

Thread 6 (Thread -1252488272 (LWP 6056)):
#0  0xb75ebc32 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2

Thread 5 (Thread -1262978128 (LWP 6057)):
#0  0xb75ebc32 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2

Thread 4 (Thread -1273467984 (LWP 6058)):
#0  0xb75ebc32 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2

Thread 3 (Thread -1283957840 (LWP 6059)):
#0  0xb75ebc32 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2

Thread 2 (Thread -1294447696 (LWP 6060)):
#0  0xb75ebc32 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2

Thread 1 (Thread -1220904736 (LWP 6051)):
#0  0x0806494e in _Rb_tree_rebalance_for_erase (__z=0x819b220,
__root=@0x819b14c, __leftmost=@0x819b150,
    __rightmost=@0x819b154) at stl_tree.h:107
#1  0x08080803 in std::_Rb_tree<mapKeynode, std::pair<mapKeynode const,
MapEntry*>, std::_Select1st<std::pair<mapKeynode const, MapEntry*> >,
ltstr, std::allocator<std::pair<mapKeynode const, MapEntry*> >
>::erase(std::_Rb_tree_iterator<std::pair<mapKeynode const, MapEntry*>, std::pair<mapKeynode const, MapEntry*>&, std::pair<mapKeynode const, MapEntry*>*>) (this=0x81946d8, __position={<_Rb_tree_base_iterator> = {_M_node = 0x819b220}, <No data fields>})
    at stl_tree.h:1169
#2  0x0807fa28 in std::_Rb_tree<mapKeynode, std::pair<mapKeynode const,
MapEntry*>, std::_Select1st<std::pair<mapKeynode const, MapEntry*> >,
ltstr, std::allocator<std::pair<mapKeynode const, MapEntry*> >
>::erase(std::_Rb_tree_iterator<std::pair<mapKeynode const, MapEntry*>, std::pair<mapKeynode const, MapEntry*>&, std::pair<mapKeynode const, MapEntry*>*>, std::_Rb_tree_iterator<std::pair<mapKeynode const, MapEntry*>, std::pair<mapKeynode const, MapEntry*>&, std::pair<mapKeynode const, MapEntry*>*>) (this=0x81946d8, __first=
---Type <return> to continue, or q <return> to quit---
        {<_Rb_tree_base_iterator> = {_M_node = 0x819b220}, <No data
fields>}, __last=
        {<_Rb_tree_base_iterator> = {_M_node = 0x819b1d8}, <No data
fields>}) at stl_tree.h:1249
#3  0x0807ecd4 in std::_Rb_tree<mapKeynode, std::pair<mapKeynode const,
MapEntry*>, std::_Select1st<std::pair<mapKeynode const, MapEntry*> >,
ltstr, std::allocator<std::pair<mapKeynode const, MapEntry*> >
>::erase(mapKeynode const&)
    (this=0x81946d8, __x=@0x81991a0) at stl_tree.h:1185
#4  0x0807e4ee in std::map<mapKeynode, MapEntry*, ltstr,
std::allocator<std::pair<mapKeynode const, MapEntry*> >
>::erase(mapKeynode const&) (this=0x81946d8, __x=@0x81991a0) at stl_map.h:297
#5  0x080780bb in ProcessMessage(int) (nID=2) at rs_v1.C:2230
#6  0x0807539c in startRoutingServer() () at rs_v1.C:1288
#7  0x08072bc6 in main () at rs_v1.C:349

0x0806494e      107           while (__x->_M_left != 0) __x =
__x->_M_left;

.