Force ruby extension process signals like Ctrl + C

mysignal.c

#include <stdio.h>
#include <unistd.h>
#include <ruby.h>

/* Force ruby extension process signals like Ctrl + C */

void process_signal(int signal) {
  VALUE pid;
  /* force call any block on trap function */
  pid = rb_funcall(rb_mProcess, rb_intern("pid"), 0);
  rb_funcall(rb_mProcess, rb_intern("kill"), 2, INT2FIX(signal), INT2FIX(pid));
}

void register_signals() {
  int i;
  for(i = 0; i < 33; i++) {
    (void) signal(i, process_signal);
  }
}

static VALUE start_main_loop(VALUE self) {
  register_signals();
  while(1) {
    usleep(100);
  }
  return Qnil;
}

void Init_mysignal() {
  VALUE klass_mysignal = rb_define_class("MySignal", rb_cObject);
  rb_define_singleton_method(klass_mysignal, "start!", start_main_loop, 0);
}