Comment #7 on issue 19276 by hc...@chromium.org: Browser hangs very
frequently during video hardware configuration testing
http://code.google.com/p/chromium/issues/detail?id=19276
I isolated the dead lock to PCMWaveOutAudioOutputStream and created a test
can easily
reproduce such dead lock:
1. Apply attached patch file (dead_lock.patch)
2. Build media_unittests
3. Connect to a remote computer with above steps 1 - 5
4. run: media_unittests --gtest_filter=WinAudioTest.PCMWaveStreamDeadLock
in the
debugger
You'll notice a dead lock pretty easily.
Here's the stack trace I captured:
<< Thread name: testing::internal::FunctionMockerBase<void
__cdecl(bool)>::InvokeWith
PCMWaveOutAudioOutputStream::Start Normal 0 >>
ntdll.dll!7c90e514()
[Frames below may be incorrect and/or missing, no symbols loaded for
ntdll.dll]
ntdll.dll!7c90df5a()
ntdll.dll!7c91b24b()
kernel32.dll!7c80262a()
kernel32.dll!7c802600()
kernel32.dll!7c809f00()
ntdll.dll!7c901046()
rdpsnd.dll!5dac1d9e()
rdpsnd.dll!5dac14a8()
winmm.dll!76b455b2()
winmm.dll!76b45aa7()
msacm32.drv!72d11502()
msacm32.drv!72d112de()
winmm.dll!76b455b2()
winmm.dll!76b45aa7()
>
media_unittests.exe!PCMWaveOutAudioOutputStream::Start(AudioOutputStream::AudioSource
Callback * callback=0x0012fc7c) Line 159 + 0x15 bytes C++
media_unittests.exe!WinAudioTest_PCMWaveStreamDeadLock_Test::TestBody()
Line
493 + 0x13 bytes C++
media_unittests.exe!testing::Test::Run() Line 2031 + 0xf bytes C++
media_unittests.exe!testing::internal::TestInfoImpl::Run() Line 2291
C++
media_unittests.exe!testing::internal::TestInfoImpl::RunTest(testing::TestInfo
*
test_info=0x011d9d08) Line 656 C++
media_unittests.exe!testing::internal::List<testing::TestInfo
*>::ForEach<void (__cdecl*)(testing::TestInfo *)>(void (testing::TestInfo
*)*
functor=0x00709f60) Line 397 + 0x10 bytes C++
media_unittests.exe!testing::TestCase::Run() Line 2384 C++
media_unittests.exe!testing::TestCase::RunTestCase(testing::TestCase *
test_case=0x011d81e8) Line 776 + 0xb bytes C++
media_unittests.exe!testing::internal::List<testing::TestCase
*>::ForEach<void (__cdecl*)(testing::TestCase *)>(void (testing::TestCase
*)*
functor=0x0070da20) Line 397 + 0x10 bytes C++
media_unittests.exe!testing::internal::UnitTestImpl::RunAllTests()
Line
3674
C++
media_unittests.exe!testing::UnitTest::Run() Line 3394 + 0xb bytes
C++
media_unittests.exe!TestSuite::Run() Line 69 + 0xc bytes C++
media_unittests.exe!main(int argc=2, char * * argv=0x011c3f30) Line 8
+
0x17
bytes C++
media_unittests.exe!__tmainCRTStartup() Line 327 + 0x19 bytes C
media_unittests.exe!mainCRTStartup() Line 196 C
kernel32.dll!7c817077()
media_unittests.exe!std::_Vector_const_iterator<int,std::allocator<int>
> ::operator+=(int _Off=6488175) Line 150 + 0x1b bytes C++
media_unittests.exe!GTestStreamToHelper<char const
[28]>(std::basic_ostream<char,std::char_traits<char> > * os=0x00730065,
const char
[28]& val=0x006f0073) Line 97 + 0xd bytes C++
media_unittests.exe!testing::internal::FunctionMockerBase<void
__cdecl(bool)>::InvokeWith(const
std::tr1::tuple<bool,void,void,void,void,void,void,void,void,void> &
args={...})
Line 1549 + 0xaa bytes C++
9a16e8ec()
<< Thread name: 4956 PCMWaveOutAudioOutputStream::WaveCallback
PCMWaveOutAudioOutputStream::WaveCallback Normal 0 >>
ntdll.dll!7c90e514()
[Frames below may be incorrect and/or missing, no symbols loaded for
ntdll.dll]
ntdll.dll!7c90df5a()
ntdll.dll!7c91b24b()
ntdll.dll!7c929fef()
kernel32.dll!7c802600()
kernel32.dll!7c802542()
winmm.dll!76b5b43b()
ntdll.dll!7c901046()
winmm.dll!76b45576()
winmm.dll!76b45aa7()
>
> media_unittests.exe!PCMWaveOutAudioOutputStream::WaveCallback(HWAVEOUT__
> *
hwo=0x001662b8, unsigned int msg=957, unsigned long instance=18728336,
unsigned long
param1=18737376, unsigned long __formal=0) Line 285 + 0x12 bytes C++
winmm.dll!76b454e3()
msacm32.drv!72d114e4()
msacm32.drv!72d11670()
winmm.dll!76b454e3()
rdpsnd.dll!5dac1c4b()
rdpsnd.dll!5dac22ab()
rdpsnd.dll!5dac255a()
kernel32.dll!7c80b729()
Attachments:
dead_lock.patch 1.7 KB
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