[vdr] MP3-plugin problems with slow cpu

Stefan Huelswitt s.huelswitt at gmx.de
Mon Jul 25 22:45:24 CEST 2005


On 25 Jul 2005 Martin Cap <macap20001 at compuserve.de> wrote:
> #0  0xb7f446a1 in __read_nocancel () from /lib/tls/libpthread.so.0
> #1  0xb7692e32 in cStream::Stream (this=0x92bab70, data=@0xb1385618,
>      len=@0xb138561c, rest=0x7ff9 <Address 0x7ff9 out of bounds>)
>      at stream.c:256
> #2  0xb7699b66 in cScanID3::DoScan (this=0x92bac18) at decoder-mp3.c:38
> #3  0xb76989ee in cMP3Decoder::Start (this=0x92baad0) at decoder-mp3.c:155
> #4  0xb769165d in cMP3Player::Action (this=0x92829a0) at player-mp3.c:1798
> #5  0x080ef2a2 in cThread::StartThread ()
> #6  0xb7f3fb63 in start_thread () from /lib/tls/libpthread.so.0
> #7  0xb7df418a in clone () from /lib/tls/libc.so.6
> 
> So the dead-lock happens at line 256. Strange, obviously.
> (I can output what r + errno give me when returning from read() and post 
> it here.)

Without loocking at the details, I still cannot understand why
this code part is reached.

For me there are only 3 ways for this:
1.) You have disabled USE_MMAP at the beginning of stream.c
2.) The file is bigger than MAX_MMAP_SIZE (currently 32mb)
3.) mmap() failed for some reason (should give syslog entry if
run in debug loglevel)

Regards.

-- 
Stefan Huelswitt
s.huelswitt at gmx.de  | http://www.muempf.de/



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