Class LocalT have member of other class that realized read-write-mutex. Mutex initialized at constructor and use pthread_rwlock_rdlock(&aMutex); for reading lock. So, seems, its all ok with mutex class. But program crashed when some LocalT object lock his mutex member for reading.
CSerialize.cpp:2054 line is MUTEX.lock_reading();
Thread 6 (Thread 0x80d4e00 (runnable)):
#0 0x4864f11d in pthread_mutex_lock () from /lib/libpthread.so.2
#1 0x4864b558 in pthread_rwlock_init () from /lib/libpthread.so.2
#2 0x4864b659 in pthread_rwlock_rdlock () from /lib/libpthread.so.2
#3 0x0807ae14 in LocalT::serialize (this=0x80d4e00, outbin=@0x7574736b)
at CSerialize.cpp:2054
Other two running threads:
1) at socket accept();
2) next runnable thread at popen() call, seems its execute or read from pipe. But does not know what is __error() ?????
Thread 1 (Thread 0x8614800 (LWP 100343)):
#0 0x4865b8f9 in __error () from /lib/libpthread.so.2
#1 0x4865a15a in pthread_testcancel () from /lib/libpthread.so.2
#2 0x486425bf in read () from /lib/libpthread.so.2
#3 0x08056340 in UT::execute_popen (command=@0x4865e6bc,
ptr_output=0xbf2f7d30) at Utils.cpp:75
3) all other thread sleeping.
I have no ideas why its crashed? Maybe somebody can assume something or suggest?
==EDIT==
and here is one system(?) thread ( i does not create it, but program always have +1 thread). It always:
Thread 8 (Thread 0x80d4a00 (LWP 100051)):
#0 0x4865a79b in pthread_testcancel () from /lib/libpthread.so.2
#1 0x48652412 in pthread_mutexattr_init () from /lib/libpthread.so.2
#2 0x489fd450 in ?? ()
==EDIT2 - bt as requested==
(gdb) bt
#0 0x4865a7db in pthread_testcancel () from /lib/libpthread.so.2
#1 0x48652412 in pthread_mutexattr_init () from /lib/libpthread.so.2
#2 0x489fd450 in ?? ()
strangely... why ?? () ?
==EDIT3 - when loading core==
Program terminated with signal 11, Segmentation fault.
[skiped]
#0 0x4865a7db in pthread_testcancel () from /lib/libpthread.so.2
[New Thread 0x8614800 (LWP 100343)]
[New Thread 0x8614600 (sleeping)]
[New Thread 0x8614400 (sleeping)]
[New Thread 0x8614200 (sleeping)]
[New Thread 0x8614000 (sleeping)]
[New Thread 0x80d4e00 (runnable)]
[New Thread 0x80d4c00 (sleeping)]
[New Thread 0x80d4a00 (LWP 100051)]
[New Thread 0x80d4000 (runnable)]
[New LWP 100802]
(gdb) info thread
* 10 LWP 100802 0x4865a7db in pthread_testcancel () from /lib/libpthread.so.2
9 Thread 0x80d4000 (runnable) 0x486d7bd3 in accept () from /lib/libc.so.6 -- MAIN() THREAD
8 Thread 0x80d4a00 (LWP 100051) 0x4865a79b in pthread_testcancel ()
from /lib/libpthread.so.2 ( UNIDENTIFIED THREAD system()? )
7 Thread 0x80d4c00 (sleeping) 0x48651cb6 in pthread_mutexattr_init ()
from /lib/libpthread.so.2 (SIGNAL PROCESSOR THREAD)
6 Thread 0x80d4e00 (runnable) 0x4864f11d in pthread_mutex_lock ()
from /lib/libpthread.so.2 (MAINTENANCE THREAD)
5 Thread 0x8614000 (sleeping) 0x48651cb6 in pthread_mutexattr_init ()
from /lib/libpthread.so.2 (other mutex cond_wait - worker 1)
4 Thread 0x8614200 (sleeping) 0x48651cb6 in pthread_mutexattr_init ()
from /lib/libpthread.so.2 (other mutex cond_wait - worker 2 )
3 Thread 0x8614400 (sleeping) 0x48651cb6 in pthread_mutexattr_init ()
from /lib/libpthread.so.2 (other mutex cond_wait - worker 3 )
2 Thread 0x8614600 (sleeping) 0x48651cb6 in pthread_mutexattr_init ()
from /lib/libpthread.so.2 (other mutex cond_wait - worker 4)
1 Thread 0x8614800 (LWP 100343) 0x4865b8f9 in __error ()
from /lib/libpthread.so.2 ( popen() thread see below)
I created: 1 maintenance thread (serializing), 1 popen() thread, 4 workers, 1 main, 1 signal thread = 8 threads....
