Mail Archives: cygwin/2013/03/11/15:36:34
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| From: | jojelino <jojelino AT gmail DOT com>
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| Subject: | Re: deadlock with busy waiting on sigfe
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| Date: | Tue, 12 Mar 2013 04:35:41 +0900
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| Lines: | 97
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On 2013-03-11 PM 11:36, Christopher Faylor wrote:
> A "proper bug report" would at least include what you were actually doing
> to trigger this problem.
>
I was trying to CTRL+C cygwin python process that is executing some
operation and fell asleep for 60 seconds repeatedly. I'm pretty sure
that the process was sleeping as i tried interrupt it.
> Are you sure that there are only two threads executing here? It seems like
> this is a symptom of another thread holding the lock.
>
It's unlikely the case because there was two thread running when
livelock observed.
> cgf
>
>> Thread 2 (Thread 7596.0x104):
>> #0 0x7c96845c in ntdll!KiFastSystemCallRet ()
>> from /cygdrive/c/WINDOWS/system32/ntdll.dll
>> #1 0x7c9678c9 in ntdll!ZwSetInformationThread ()
>> from /cygdrive/c/WINDOWS/system32/ntdll.dll
>> #2 0x7c8324f9 in SetThreadPriority ()
>> from /cygdrive/c/WINDOWS/system32/kernel32.dll
>> #3 0x6108790d in yield ()
>> at
>> /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/miscfuncs.cc:253
>> #4 0x610d7354 in _cygtls::lock() () from /usr/bin/cygwin1.dll
>> #5 0x6103096e in sigpacket::setup_handler (this=0x6aac34,
>> handler=0x6102fe00 <signal_exit(int, siginfo_t*)>, siga=...,
>> tls=0x22ce64)
>> at
>> /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/exceptions.cc:796
>> #6 0x610318ff in sigpacket::process (this=0x6aac34)
>> at
>> /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/exceptions.cc:1245
>> ---Type <return> to continue, or q <return> to quit---
>> #7 0x610dd74c in wait_sig ()
>> at /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/sigproc.cc:1389
>> #8 0x61003ea5 in cygthread::callfunc (this=0x6118b420 <threads>,
>> issimplestub=<optimized out>)
>> at /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/cygthread.cc:51
>> #9 0x6100442f in cygthread::stub (arg=0x6118b420 <threads>)
>> at /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/cygthread.cc:93
>> #10 0x6100537d in _cygtls::call2 (this=<optimized out>,
>> func=0x610043e0 <cygthread::stub(void*)>, arg=0x6118b420 <threads>,
>> buf=0x6100551b <_cygtls::call(unsigned long (*)(void*, void*),
>> void*)+91>)
>> at /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/cygtls.cc:99
>> #11 0x006affb8 in ?? ()
>> #12 0x7c82484f in KERNEL32!GetModuleHandleA ()
>> from /cygdrive/c/WINDOWS/system32/kernel32.dll
>> #13 0x00000000 in ?? ()
>>
>> Thread 1 (Thread 7596.0x190):
>> #0 0x7c96845c in ntdll!KiFastSystemCallRet ()
>> from /cygdrive/c/WINDOWS/system32/ntdll.dll
>> #1 0x7c9678c9 in ntdll!ZwSetInformationThread ()
>> from /cygdrive/c/WINDOWS/system32/ntdll.dll
>> #2 0x7c8324f9 in SetThreadPriority ()
>> from /cygdrive/c/WINDOWS/system32/kernel32.dll
>> #3 0x610878cb in yield ()
>> ---Type <return> to continue, or q <return> to quit---
>> at
>> /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/miscfuncs.cc:244
>> #4 0x610d7354 in _cygtls::lock() () from /usr/bin/cygwin1.dll
>> #5 0x61031297 in _cygtls::call_signal_handler (
>> this=0x610d7354 <_cygtls::lock()+23>)
>> at
>> /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/exceptions.cc:1265
>> #6 0x61007689 in _cygwin_exit_return ()
>> at /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/dcrt0.cc:1012
>> #7 0x6100537d in _cygtls::call2 (this=<optimized out>,
>> func=0x61006c50 <dll_crt0_1(void*)>, arg=0x0,
>> buf=0x6100551b <_cygtls::call(unsigned long (*)(void*, void*),
>> void*)+91>)
>> at /netrel/src/cygwin-snapshot-20130309-1/winsup/cygwin/cygtls.cc:99
>> #8 0x0022ff78 in ?? ()
>> #9 0x004011d2 in ?? ()
>> #10 0x00401015 in ?? ()
>> #11 0x7c82f243 in ProcessIdToSessionId ()
>> from /cygdrive/c/WINDOWS/system32/kernel32.dll
>>
>> --
>> Regards.
>>
>>
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>>
>
--
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