When a process is down - how to get a coredump in arm board?
Running a multi-threaded program in my arm board one day or more ,The process down .
In order to get a coredump to analysis of the stack , . I use commands ulimited -c unlimited .
but when the process down . no coredump
But I write a test
input a number , coredump generated .
why?
Last edited by pludi; 03-02-2010 at 01:54 AM..
Reason: code tags, please...
while executing the ulimit command , you need give some value for -c option .
Here -c option value is for saying the approximate size of the dump file
Then you run the segmentation fault object file , it would give you core dumped file
The user running the app has a ulimit setting to prevent it - environment setting
You linked against an object that blocks SIGSEGV/SIGBUS
You block SIGSEGV/SIGBUS in your code somewhere
I do not know much about ARM. When you execute the image file is there some separate environment in which it runs? To check resource settings:
ex:
I would guess this is the first place to look, and if this is not the case then it pretty much has to be signal blocking somewhere.
The user running the app has a ulimit setting to prevent it - environment setting
You linked against an object that blocks SIGSEGV/SIGBUS
You block SIGSEGV/SIGBUS in your code somewhere
I do not know much about ARM. When you execute the image file is there some separate environment in which it runs? To check resource settings:
ex:
I would guess this is the first place to look, and if this is not the case then it pretty much has to be signal blocking somewhere.
Quote:
The user running the app has a ulimit setting to prevent it - environment setting
I use " ulimit -c unlimited ", not" ulimit -c 100 "or something else .
Quote:
You block SIGSEGV/SIGBUS in your code somewhere
I can use functions setjmp, longjmp ,and signal to catch SIGSEGV/SIGBUS and do anything i want .
Even so , I don't know the place generate SIGSEGV/SIGBUS
I use ulimit -a to display the setting , It's right !
Running a multi-threaded program in my arm board one day or more ,The process down .
In order to get a coredump to analysis of the stack , . I use commands ulimited -c unlimited .
but when the process down . no coredump
But I write a test <snip> input a number , coredump generated .
why?
Perhaps no enough space available on the flash to write the core dump?
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