Re: SIGALRM in a class member?

Ron Eggler wrote:


You can do this with a forwarding function that is a static member (you
can also do it with a non-member function). Because signal does not
give you a way to attach some caller defined data, you will also need a
static member variable to hold a pointer to the instance of the class
you want to use:

   foo.h:
   class foo
   {
   public:
       foo()
       {
           signal(SIGALRM, sighandler_trampoline);
           singleton = this;
       }

   private:
       static void sighandler_trampoline(int sig)
       {
           singleton->sighandler(sig);
       }

       void sighandler(int sig)
       {
           // add your logic here
       }

       static foo *singleton;
   };

   foo.cpp:
   foo *foo::singleton = 0;

samuel