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@ -78,10 +78,10 @@ typedef void (*__sighandler_t) (int);
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the additional function `sysv_signal' when X/Open compatibility is
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requested. */
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extern __sighandler_t __sysv_signal (int __sig, __sighandler_t __handler)
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__THROW;
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__THROW __nonnull ((2));
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#ifdef __USE_GNU
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extern __sighandler_t sysv_signal (int __sig, __sighandler_t __handler)
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__THROW;
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__THROW __nonnull ((2));
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#endif
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/* Set the handler for the signal SIG to HANDLER, returning the old
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@ -89,13 +89,14 @@ extern __sighandler_t sysv_signal (int __sig, __sighandler_t __handler)
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By default `signal' has the BSD semantic. */
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__BEGIN_NAMESPACE_STD
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#ifdef __USE_BSD
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extern __sighandler_t signal (int __sig, __sighandler_t __handler) __THROW;
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extern __sighandler_t signal (int __sig, __sighandler_t __handler)
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__THROW __nonnull ((2));
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#else
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/* Make sure the used `signal' implementation is the SVID version. */
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# ifdef __REDIRECT_NTH
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extern __sighandler_t __REDIRECT_NTH (signal,
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(int __sig, __sighandler_t __handler),
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__sysv_signal);
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__sysv_signal) __nonnull ((2));
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# else
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# define signal __sysv_signal
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# endif
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@ -105,7 +106,8 @@ __END_NAMESPACE_STD
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#ifdef __USE_XOPEN
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/* The X/Open definition of `signal' conflicts with the BSD version.
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So they defined another function `bsd_signal'. */
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extern __sighandler_t bsd_signal (int __sig, __sighandler_t __handler) __THROW;
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extern __sighandler_t bsd_signal (int __sig, __sighandler_t __handler)
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__THROW __nonnull ((2));
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#endif
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/* Send signal SIG to process number PID. If PID is zero,
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@ -129,7 +131,8 @@ __END_NAMESPACE_STD
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#ifdef __USE_SVID
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/* SVID names for the same things. */
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extern __sighandler_t ssignal (int __sig, __sighandler_t __handler) __THROW;
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extern __sighandler_t ssignal (int __sig, __sighandler_t __handler)
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__THROW __nonnull ((2));
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extern int gsignal (int __sig) __THROW;
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#endif /* Use SVID. */
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@ -210,31 +213,32 @@ typedef __sighandler_t sig_t;
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# endif
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/* Clear all signals from SET. */
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extern int sigemptyset (sigset_t *__set) __THROW;
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extern int sigemptyset (sigset_t *__set) __THROW __nonnull ((1));
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/* Set all signals in SET. */
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extern int sigfillset (sigset_t *__set) __THROW;
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extern int sigfillset (sigset_t *__set) __THROW __nonnull ((1));
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/* Add SIGNO to SET. */
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extern int sigaddset (sigset_t *__set, int __signo) __THROW;
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extern int sigaddset (sigset_t *__set, int __signo) __THROW __nonnull ((1));
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/* Remove SIGNO from SET. */
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extern int sigdelset (sigset_t *__set, int __signo) __THROW;
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extern int sigdelset (sigset_t *__set, int __signo) __THROW __nonnull ((1));
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/* Return 1 if SIGNO is in SET, 0 if not. */
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extern int sigismember (__const sigset_t *__set, int __signo) __THROW;
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extern int sigismember (__const sigset_t *__set, int __signo)
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__THROW __nonnull ((1));
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# ifdef __USE_GNU
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/* Return non-empty value is SET is not empty. */
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extern int sigisemptyset (__const sigset_t *__set) __THROW;
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extern int sigisemptyset (__const sigset_t *__set) __THROW __nonnull ((1));
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/* Build new signal set by combining the two inputs set using logical AND. */
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extern int sigandset (sigset_t *__set, __const sigset_t *__left,
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__const sigset_t *__right) __THROW;
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__const sigset_t *__right) __THROW __nonnull ((1, 2, 3));
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/* Build new signal set by combining the two inputs set using logical OR. */
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extern int sigorset (sigset_t *__set, __const sigset_t *__left,
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__const sigset_t *__right) __THROW;
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__const sigset_t *__right) __THROW __nonnull ((1, 2, 3));
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# endif /* GNU */
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/* Get the system-specific definitions of `struct sigaction'
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@ -250,21 +254,22 @@ extern int sigprocmask (int __how, __const sigset_t *__restrict __set,
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This function is a cancellation point and therefore not marked with
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__THROW. */
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extern int sigsuspend (__const sigset_t *__set);
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extern int sigsuspend (__const sigset_t *__set) __nonnull ((1));
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/* Get and/or set the action for signal SIG. */
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extern int sigaction (int __sig, __const struct sigaction *__restrict __act,
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struct sigaction *__restrict __oact) __THROW;
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/* Put in SET all signals that are blocked and waiting to be delivered. */
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extern int sigpending (sigset_t *__set) __THROW;
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extern int sigpending (sigset_t *__set) __THROW __nonnull ((1));
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/* Select any of pending signals from SET or wait for any to arrive.
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This function is a cancellation point and therefore not marked with
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__THROW. */
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extern int sigwait (__const sigset_t *__restrict __set, int *__restrict __sig);
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extern int sigwait (__const sigset_t *__restrict __set, int *__restrict __sig)
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__nonnull ((1, 2));
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# ifdef __USE_POSIX199309
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/* Select any of pending signals from SET and place information in INFO.
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@ -272,7 +277,7 @@ extern int sigwait (__const sigset_t *__restrict __set, int *__restrict __sig);
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This function is a cancellation point and therefore not marked with
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__THROW. */
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extern int sigwaitinfo (__const sigset_t *__restrict __set,
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siginfo_t *__restrict __info);
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siginfo_t *__restrict __info) __nonnull ((1));
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/* Select any of pending signals from SET and place information in INFO.
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Wait the time specified by TIMEOUT if no signal is pending.
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@ -281,7 +286,8 @@ extern int sigwaitinfo (__const sigset_t *__restrict __set,
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__THROW. */
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extern int sigtimedwait (__const sigset_t *__restrict __set,
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siginfo_t *__restrict __info,
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__const struct timespec *__restrict __timeout);
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__const struct timespec *__restrict __timeout)
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__nonnull ((1));
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/* Send signal SIG to the process PID. Associate data in VAL with the
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signal. */
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