Re: [Freewheeling-user] fweelin quitting abrutly

[barmin <ba...@bl...>]

Hello again,

Some more details about my own post.

Here's a backtrace of fweelin after the bad_alloc

(gdb) backtrace
#0  0x00fd6422 in __kernel_vsyscall ()
#1  0x0070b4d1 in *__GI_raise (sig=6)
    at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#2  0x0070e932 in *__GI_abort () at abort.c:92
#3  0x005e54df in __gnu_cxx::__verbose_terminate_handler() ()
   from /usr/lib/libstdc++.so.6
#4  0x005e3415 in ?? () from /usr/lib/libstdc++.so.6
#5  0x005e3452 in std::terminate() () from /usr/lib/libstdc++.so.6
#6  0x005e3591 in __cxa_throw () from /usr/lib/libstdc++.so.6
#7  0x005e3c0f in operator new(unsigned int) () from /usr/lib/libstdc++.so.6
#8  0x005e3ced in operator new[](unsigned int) () from /usr/lib/libstdc++.so.6
#9  0x080b7271 in AudioBlock (this=0xb7c79420) at fweelin_block.cc:817
#10 AudioBlock::NewInstance (this=0xb7c79420) at fweelin_block.h:163
#11 0x080af44b in PreallocatedType::GoPreallocate (this=0xb7c8ccd8)
    at fweelin_mem.cc:617
#12 0x080afb39 in MemoryManager::run_mgr_thread (ptr=0x81109a8)
    at fweelin_mem.cc:189
#13 0x00e3980e in start_thread (arg=0xb7ea8b70) at pthread_create.c:300
#14 0x007ad7ee in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130

The process uses around 30Mb of RAM at that moment, so there's definitely some more memory available.
There might be a bug causing fweelin to try and allocate a ridiculously large amount of memory at that point.
I tried to activate some debugging messages in the source, but I could not see anything strange.
Further investigation would probably take me much more time than I can afford.

Any idea anybody?

Thanks,

Matthieu

barmin a écrit :
> Hello,
> 
> This is my first post to this list. I discovered freewheeling some time ago and find this is a very interesting approach to looping.
> Today I decided to have a try myself.
> 
> I'm working on a Dell laptop with Ubuntu 9.10, real-time kernel, jackd 0.116.1.
> Ubuntu's version of freewheeling does not even start. It complains about some problem with color depth in display. I don't remember the exact message.
> So I downloaded and compiled version 0.6. Works better but...
> After slightly more than 20 secs of loop recording, fweelin quits with a bad alloc:
> 
> terminate called after throwing an instance of 'std::bad_alloc'
>   what():  std::bad_alloc
> 
> This seems to be directly linked to the total length of recorded music. I mean, I can record a 10secs loop, play it several minutes, add a 5secs loop, play more, and when I want to add a 3rd one it quits. But if I try to record one long loop, it quits after about 20 secs.
> 
> This happens with my laptop's internal soundcard as well as with an external USB one.
> 
> Any idea what could be happening? fweelin seems really nice, I'd love it to work for me too!
> 
> Thanks for your help,
> 
> Matthieu
> 
> PS: Also, sometimes it starts and doesn't accept any input from the keyboard. Simply nothing happens.
> I have to "kill -9" the process and start it again. Sometimes it does the same, and only removing ~/.fweelin does the trick.
> Whether this is linked or not to the first problem, I've got no idea...