handler « unix « C Q&A

1. Catching signal inside its own handler    stackoverflow.com

#include<stdio.h>
#include<signal.h>

void handler(int signo)
{
    printf("Into handler\n");
    while(1);
}
int main()
{
    struct sigaction act;
    act.sa_handler = handler;
    act.sa_flags = 0;
 ...

2. Why isn't my signal handler being called?    stackoverflow.com

Im working on a assignment which uses signals to transfer a binary message between two processes, with the goal of learning about signals (it is a strange use indeed). In my program, ...

3. sigaction - why don't we have to reset the handler?    stackoverflow.com

If we use sigaction to define a signal handler, then why don't we need to reset the handler? If we do the use signal(sig_no,handler_func) then we must reset it. Why is ...

4. What would you use an exit handler for?    stackoverflow.com

Possible Duplicate:
what is the purpose of atexit function?

5. Unix programming - signal handler    stackoverflow.com

I've run into some problems while trying to write a smallshell in c. The problem is the following: Assume I have written some code for a signal-handler that, in this case, is ...

6. Throwing exceptions in a unix signal handler. Good idea?    bytes.com

Is the behaviour of throwing exceptions in a unix signal handler defined? eg: void sighandler(int sig) { ... do something throw myobj; } Under gcc on linux it seems to work as I'd expect - ie the exception handler wrapping the code running when the signal was caught catches the exception, but no one I've asked seems sure if this is ...

7. Signal handlers (UNIX)    forums.devshed.com

In my tutorial, I found an example how should signal handler be written, but it seems I failed to understand it. In this example everything works as it is supposed to, but how should I write second signal handler (sig_alrm) using sigsetjmp and siglongjmp functions to prevent first signal handler (sig_usr1) to be terminated by SIGALRM signal and never be finished ...