Re: ctrl-c and oct files

[John Donoghue]

Further more, if I try something such as:

#include <octave/oct.h>
#include <octave/sighandlers.h>

#include <unistd.h>

void catch_ctrl(int sig)
{
  printf("catch here %d\n", sig);
}

DEFUN_DLD (testctrl, args, nargout, "Test Ctrl-C")
{
  printf("starting sleep\n");

  auto old_handler = octave::set_signal_handler(SIGINT, catch_ctrl);

  sleep(10);

  octave::set_signal_handler(SIGINT, old_handler);

  printf("finished sleep\n");

  return octave_value();
}


and press ctrl-c, catch_ctrl never displays anything.


> #include <octave/oct.h>
> #include <unistd.h>
>
> DEFUN_DLD (testctrl, args, nargout, "Test Ctrl-C")
> {
>   printf("starting sleep\n");
>
>   BEGIN_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
>
>   sleep(10);
>
>   END_INTERRUPT_IMMEDIATELY_IN_FOREIGN_CODE;
>
>   printf("finished sleep\n");
>   return octave_value();
> }
>
> Build with mkoctfile, in fedora 26, with octave 4.3.92, hg 
> 25327:abc5095d58c2
>
>
> Running it with octave --no-gui, when I run testctrl, and press ctrl-c 
> after a second, shouldn't the code break out?
>
> Currently, for me, ctrl-c doesnt appear to do anything - the prints 
> execute after the 10 second sleep, rather than breaking out part way 
> through the sleep.
>
> octave --gui does the same.