I read somewhere on the net that glibc 2.3.2 has a known threading issue where threads get livelocked for no reason. I discovered this after my program exhibited these symptoms. The stated cure for this problem was to upgrade to glibc 2.3.3 or higher. I upgraded to 2.3.4 but I still get the same problem. When the program livelocks, I attach gdb to it and do a backtrace and I find that the crucial thread is stuck during a call to pthread_cond_timedwait. The gdb frame entry for this method is as follows:
#1 0xf6fbecfc in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/libpthread.so.0.

So my question is, if I upgraded to glibc 2.3.4, then why is this line saying GLIBC_2.3.2? Looking at /lib/tls, each of the .so's have version number 2.3.4.

Any idea what is going on there?

thanks,

Todd

evidently some of the shared libraries did not get upgraded............you may need to move some of these manually............it's a pain I know but, .........

I'm porting glibc 2.3.5 to a new platform, one of our requirement is to build glibc static only, I mean -disable-shared. It means only "*.a" libraries will be created. Last time I built glibc 2.2.x where I could build all libs with -disable-shared flag in configure command, this time with glibc 2.3.5 while building modules such pwd, zic etc it throws error messages related pthread symbols undefined. Does it mean I cannot build pthread for static linking?

Example error messages
libc.a(setenv.o): In function `D.L_DL26':
setenv.o(.text+0x52c): undefined reference to `__pthread_mutex_unlock'
setenv.o(.text+0x530): undefined reference to `__pthread_mutex_unlock'
setenv.o(.text+0x54c): undefined reference to `__pthread_mutex_unlock'
setenv.o(.text+0x554): undefined reference to `__pthread_mutex_unlock'



libc.a(vfwprintf.o): In function `D.L_DL67':
vfwprintf.o(.text+0x1268): undefined reference to `_pthread_cleanup_push_defer'
vfwprintf.o(.text+0x126c): undefined reference to `_pthread_cleanup_push_defer'
vfwprintf.o(.text+0x12ec): undefined reference to `_pthread_cleanup_push_defer'
vfwprintf.o(.text+0x12f0): undefined reference to `_pthread_cleanup_push_defer'

Appreciate any valid feedback.
Thanks,
rekha