Have you tried the opensles test case 
under /frameworks/wilhelm/tests/examples/slesTestRecBuffQueue.cpp on kk4.4?
Becasue I tried this case "slesTest_recBuffQueue" for several times and 
similar deadlock issue will be reproduced easily. The case will be clocked 
and cannot be finished.

On Thursday, May 15, 2014 10:47:06 PM UTC+8, Glenn Kasten wrote:
>
> Thank you for your report.   We have a similar report here:
>      https://groups.google.com/forum/#!topic/android-ndk/G7dLKAGGL28
> I think I might have a fix, but I am looking for a test case.
> Do you have a test case you can share, that is simpler than Skype?
>
> On Tuesday, May 13, 2014 9:58:34 PM UTC-7, Katy Ma wrote:
>>
>> When using skype call, sometimes skype call cannot be end if press end 
>> call button, and such log will appear,
>>
>> "W/libOpenSLES( 2355): 
>> frameworks/wilhelm/src/android/AudioRecorder_to_android.cpp:217: pthread 
>> 0x62471b80 (tid 2810) sees object 0x66a0d518 was locked by pthread 
>> 0x5fb4cc90 (tid 2377) at frameworks/wilhelm/src/itf/IObject.c:411"
>>
>> I think when end skype call, 
>>
>> 1. libOpenSLES to destroy CAudioRecorder(object locked, later will unlock 
>> only in IObject_deinit after finish destroyed in 3.)
>> 2. EVENT_MORE_DATA/EVENT_OVERRUN(etc.) happens and skype callback function 
>> will handle the event with a lock(requires lock in 1.).
>> 3. After  1.,  ~AudioRecord  will  be  called  during  destroy,it will wait 
>> for a lock only when mThreadExitedCondition.broadcast() after 
>> AudioRecordThread returns, however AudioRecordThread is blocked in 
>> processAudioBuffer when handle EVENT_MORE_DATA/EVENT_OVERRUN(etc.)(requires 
>> lock in 2.) However 1. cannot be finished if 3. is blocked. 
>>
>>
>> So dead lock happened.
>>
>>
>> It seems that when destroy CAudioRecoder, there's no need to handle the 
>> event, however it's hard to sync. And handling event with lock may cause 
>> deadlock when destroy CAudioRecorder.
>>
>>
>> So can we just remove the lock when handling event? Why we need lock here? 
>>
>>
>>

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