Re: [bug-libsigsegv] Libsigsegv with threads

[Bruno Haible]

Hello,

 

Eduardo Campos wrote:
> I am a C++ developer and now I have an application that's is having some

> stack overflow problems. This application is multithread and I need to knows

> which threads are causing stackoverflow. I found your library (Libsigsegv)

> but I still can't trap it.
>
> Do you have a small example about how to trap the stack overflow with threads?

> You said in your page that it's necessary to use the  pthread_sigmask and the

> pthread_setcancelstate, but I don't know which mask or cancel state to use.

Yes, the libsigsegv/README says so. But I have never created a sample program

with C++ and multiple threads and no longjmp(). If you could write and

contribute such a sample program, that would be useful. You can use

tests/sigsegv1.c and then tests/stackoverflow1.c as a starting point

(catching normal SIGSEGV is easier than catching stack overflow; I would

try the simpler case first).

 

This mailing list (bug-libsigsegv) may be able to help you on details.

 

> I still can't trap it.

 

You mean, your handler is not invoked? Show the entire program; someone might

spot the issue.

 

Bruno