(gdb) info threads
  6 Thread 0x818b000 (sleeping)  0x28377f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
  5 Thread 0x8267200 (LWP 100039)  0x2837f4f7 in pthread_testcancel ()
   from /lib/libpthread.so.2
  4 Thread 0x8267a00 (runnable)  0x2844658b in select () from /lib/libc.so.6
  3 Thread 0x8267c00 (sleeping)  0x28377f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2
* 2 Thread 0x8267e00 (LWP 100141)  0x2837f537 in pthread_testcancel ()
   from /lib/libpthread.so.2
  1 Thread 0x8274000 (sleeping)  0x28377f9b in pthread_mutexattr_init ()
   from /lib/libpthread.so.2