user-define signal handler & coredump for signal 11(SIGSEGV)

Alexlun · 05-22-2009, 08:50 AM

Hello,
As we know, the defaule behavor will be generate a coredump for a process/thread received a signal 11, However, if I change the behavior for it by development a new signal handler, I didn't get the core file. So my question is:
1)I'd like to design a signal handler, and in this handler, I printf some userful info for the thread reveived the signal 11, but the most important of this, I'd like to generate the coredump just as the default behavior. So how i could do it?

Thank you in advance.

Alexlun · 05-24-2009, 06:05 AM

Hello,all:
Could you give me some hints?
That's very kind of you.
thanks.

Valery Reznic · 05-24-2009, 06:37 AM

Quote:

Originally Posted by Alexlun

Hello,all:
Could you give me some hints?
That's very kind of you.
thanks.

When you done with your custom signal handler, do something, that will trigger
additional segfault, for example

Code:

*(int *)0 = 1

But I dodn't sure that core dump after segfault interception will do help you.
What do you need this core dump for ?