#ifndef _SIGNAL_H #if defined __need_sig_atomic_t || defined __need_sigset_t # include <signal/signal.h> #else # include <signal/signal.h> /* Now define the internal interfaces. */ extern __sighandler_t __bsd_signal (int __sig, __sighandler_t __handler); extern int __kill (__pid_t __pid, int __sig); extern int __sigblock (int __mask); extern int __sigsetmask (int __mask); extern int __sigprocmask (int __how, __const sigset_t *__set, sigset_t *__oset); extern int __sigsuspend (__const sigset_t *__set); extern int __sigwait (__const sigset_t *__set, int *__sig); extern int __sigwaitinfo (__const sigset_t *__set, siginfo_t *__info); extern int __sigtimedwait (__const sigset_t *__set, siginfo_t *__info, __const struct timespec *__timeout); extern int __sigqueue (__pid_t __pid, int __sig, __const union sigval __val); extern int __sigvec (int __sig, __const struct sigvec *__vec, struct sigvec *__ovec); extern int __sigreturn (struct sigcontext *__scp); extern int __sigaltstack (__const struct sigaltstack *__ss, struct sigaltstack *__oss); /* Allocate real-time signal with highest/lowest available priority. */ extern int __libc_allocate_rtsig (int __high); #endif #endif