}
struct signal_task *signal_init_or_die(void);
void para_sigaction(int sig, void (*handler)(int));
void para_install_sighandler(int);
int para_reap_child(pid_t *pid);
}
struct signal_task *signal_init_or_die(void);
void para_sigaction(int sig, void (*handler)(int));
void para_install_sighandler(int);
int para_reap_child(pid_t *pid);