virtual int install(int signum_, EventHandler *new_hand_, SigAction *new_disp_=0, EventHandler **old_hand_=0, SigAction *old_disp_=0)
Register EventHandler with dispatching system.
virtual int remove(int signum_, EventHandler *eh_, SigAction *new_disp_=0, SigAction *old_disp_=0)
Remove EventHandler from the list of registered handler for signum_.