Re: [Playerstage-users] WriteLog locks player on exit in Debian4.0

[Peter N. <pet...@li...>]

Solved:

I tried the 2.6.22-3 kernel from debian backports and now it seems to 
work again. It appears to be a Linux Kernel problem.

/Peter

Peter Nordin wrote:
> Followup:
>
> After running strace on player with the command (strace player -d 9 
> test.cfg) with test.cfg only starting the writelog driver. (There are no 
> other drivers loaded so I am not really logging anything). I get the 
> output bellow after sendig the signal SIGINT (same as Ctrl+C) to the 
> player process. The player process hangs at "futex(0x80504a4, 
> FUTEX_WAIT, 2, NULL ". After the destructor in writelog has been run.
>
> After some searching I found others having the same problem with other 
> software (not player related), and it seems to related to a Kernel bug 
> in some cases.
>
> Now I am wondering if there is someone else here that has run into this 
> problem, or if there is someone using debian4.0 that has not run into 
> this. If you haven't, what kernel version are you using. I am using 
> 2.6.18-5. I am gonna try some backported newer version later to see if 
> that helps.
>
> /Peter
>
> --- SIGINT (Interrupt) @ 0 (0) ---
> sigreturn()                             = ? (mask now [])
> poll([{fd=5, events=POLLIN}], 1, 0)     = 0
> write(1, "Quitting.\n", 10Quitting.
> )             = 10
> munmap(0xb6588000, 8392704)             = 0
> munmap(0xb5d87000, 8392704)             = 0
> tgkill(5232, 5233, SIGRTMIN)            = 0
> futex(0x8050484, 0x4 /* FUTEX_??? */, 1) = 0
> futex(0x8054314, FUTEX_WAKE, 1)         = 0
> write(6, "## Player version 2.1.0 \n## File"..., 311) = 311
> close(6)                                = 0
> munmap(0xb5584000, 4096)                = 0
> write(1, "fileclosed\n", 11fileclosed
> )            = 11
> write(1, "shutdown\n", 9shutdown
> )               = 9
> write(1, "destructor\n", 11destructor
> )            = 11
> futex(0x80504a4, FUTEX_WAIT, 2, NULL
>
> The output above is from player CVS but I get the same result from 2.0.4
>
>
> Peter Nordin wrote:
>   
>> Hello
>>
>> I am having  a problem when I want to exit player while the writelog 
>> driver is used.
>> To exit player i press Ctrl+C in the console window were it is running. 
>> When I do this all of my activated drivers close down nicely before 
>> player exits. If i have the WriteLog driver activated  however, the 
>> player process never exits and I am forced to kill the process.
>>
>> After adding some printf lines to writelogg.cc I could see that the 
>> writelog driver also exits nicely, it close the log-file, unsubscribe 
>> from interfaces and finally runs the writelog destructor. After this 
>> nothing more happens.  The logfiles are working but it is annoying to 
>> have to manually kill player after every run. I have tried using both 
>> playervcr and "alwayson" / "always record" options, same result.
>>
>> Before using  Debian4.0 I have used  Debian 3.1 without having this 
>> problem. I have also seen player running in Suse (dont know what 
>> version) without this problem.
>>
>> Does anyone have an Idea of what could be causing this. It happens in 
>> both player 2.0.4 and the latest CVS version. One thing I have noticed 
>> is that writelog.cc has a destructor, sicklms200.cc (another driver I am 
>> using) don't .  I guess it inherits it from the Driver class. I don't 
>> know if this is helpful.
>>
>> /Peter
>>
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>
>
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