[Speex-dev] speex and thread question.

Julien Janier julien
Wed Jun 30 09:06:03 PDT 2004


Hy,

I'm writing a application using speex.
This app have two threads one is encoding the other one decoding using
speex.

I dont know why but I got segfault on some systems.

If I juste take off one of the thread like encoding and lauchin the
decoding part in a thread and the application is still segfaulting.
But if I just launch the decoding process with out a thread every thing
is going fine.

So I would like to know if there are some special things I have to worry
about when I'm using speex and threads.

Thanks In advance.


Here a backtrace of gdb :

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 32771 (LWP 4367)]
0x40035bdb in filter_mem2_10 () from /usr/lib/libspeex.so.1
(gdb) bt
#0  0x40035bdb in filter_mem2_10 () from /usr/lib/libspeex.so.1
#1  0x411c3264 in ?? ()
#2  0x400139c0 in ?? ()
#3  0x00000001 in ?? ()
#4  0x00000000 in ?? ()
#5  0x00000001 in ?? ()
#6  0x00000000 in ?? ()
#7  0x00000001 in ?? ()
#8  0x411c32d8 in ?? ()
#9  0x411c3264 in ?? ()
#10 0x400296ff in ?? () from /usr/lib/libspeex.so.1
#11 0x00000000 in ?? ()
#12 0x400289b8 in ?? () from /usr/lib/libspeex.so.1
#13 0x411c3294 in ?? ()
#14 0x039ac0d0 in ?? ()
#15 0x411c32d4 in ?? ()
#16 0x40027000 in ?? ()
#17 0x40029bdc in ?? () from /usr/lib/libspeex.so.1
#18 0x00000000 in ?? ()
#19 0x00000001 in ?? ()
#20 0x40029028 in ?? () from /usr/lib/libspeex.so.1
#21 0x40027000 in ?? ()
#22 0x4000a1c6 in fixup () from /lib/ld-linux.so.2
Previous frame inner to this frame (corrupt stack?)

--
Julien  Janier                                   <julien at janier.org>
http://www.janier.org/               geek by nature, Linux by choice

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