On Mon, Apr 01, 2013 at 11:53:38AM +0900, jojelino wrote: >On 2013-03-17 AM 1:44, Christopher Faylor wrote: >> No, not really. The caller in this case isn't interesting. The number >> of threads executing is interesting. >> >> cgf >> >there is another debug session. I was trying to CTRL+C to mintty session >in which make process was running. process hanged with livelock. > >After inspecting cygtls content, i found that the two thread have empty >cygtls stack. so i couldn't figure out caller of _sigfe barrier, there >is no opportunity to pop stack of thread 1(which is main thread trapped >in sigfe wait loop), wait_sig thread or CTRL+C handler should have >caused bizzare.
>GNU gdb (GDB) 7.5.50.20130309-cvs (cygwin-special) >Copyright (C) 2013 Free Software Foundation, Inc. >License GPLv3+: GNU GPL version 3 or later ><http://gnu.org/licenses/gpl.html> >This is free software: you are free to change and redistribute it. >There is NO WARRANTY, to the extent permitted by law. Type "show copying" >and "show warranty" for details. >This GDB was configured as "i686-cygwin". >For bug reporting instructions, please see: ><http://www.gnu.org/software/gdb/bugs/>. > >warning: the current range check setting does not match the language. > >Whether backtraces should continue past the entry point of a program is off. >Attaching to process 4516 >[New Thread 4516.0x1e88] >[New Thread 4516.0x1310] >[New Thread 4516.0xf74] >Reading symbols from /usr/bin/clang.exe...(no debugging symbols >found)...done. >(gdb) i thr > Id Target Id Frame >* 3 Thread 4516.0xf74 0x7c95a22a in ntdll!DbgBreakPoint () > from /cygdrive/c/WINDOWS/system32/ntdll.dll > 2 Thread 4516.0x1310 0x7c96845c in ntdll!KiFastSystemCallRet () > from /cygdrive/c/WINDOWS/system32/ntdll.dll > 1 Thread 4516.0x1e88 0x7c96845c in ntdll!KiFastSystemCallRet () > from /cygdrive/c/WINDOWS/system32/ntdll.dll >(gdb) i thr > Id Target Id Frame >* 3 Thread 4516.0xf74 0x7c95a22a in ntdll!DbgBreakPoint () > from /cygdrive/c/WINDOWS/system32/ntdll.dll > 2 Thread 4516.0x1310 0x7c96845c in ntdll!KiFastSystemCallRet () > from /cygdrive/c/WINDOWS/system32/ntdll.dll > 1 Thread 4516.0x1e88 0x7c96845c in ntdll!KiFastSystemCallRet () > from /cygdrive/c/WINDOWS/system32/ntdll.dll Sorry for being so precise in my request that you provide information on threads. It sure would be nice to see what thread 3 was doing via a backtrace. cgf -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
