[maemo-developers] how to get crash stack trace in Maemo 2.2 (Nokia 770)

[From: Eero Tamminen]

Hi,

ext Alexandre Fayolle wrote:
> On Tuesday 31 August 2010 09:07:01 Han wrote:
>> Hi,
>> I am using Maemo 2.2 to develop some programs for Nokia 770. Things
>> run pretty well except sometime my program would crash for unknown
>> reason. Normally I start the program from x terminal, and  it would
>> crash with only message "Killed".
>>
>> I am wondering if possible to get a stack trace when the program
>> crashes?  so that I can find out where the crash happened in the code.
> 
> This looks like the executable was killed by the OS.  This can happen on Linux
> because of memory exhaustion (Out Of Memory killer: see e.g. http://linux-
> mm.org/OOM_Killer for more information on that). I'd advise monitoring memory 
> consumption of your program. 

And Valgrinding it on x86 to see what kind of memory leaks and
other issues it has.


> You could also use strace to check what's happening in your program and what 
> signal is received which causes termination.
> 
> The OOM Killer uses SIGTERM, which your program can intercept if its memory 
> consumption is not a bug. 

Kernel OOM killing doesn't use SIGTERM and isn't interceptable,
for a good reason.


	- Eero